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  • 201.
    Wolf, Jens
    et al.
    KTH, Superseded Departments, Chemical Engineering and Technology.
    Yan, Jinyue
    KTH, Superseded Departments, Chemical Engineering and Technology.
    Cogeneration of hydrogen and electrical power in an extended chemical-looping combustion2004In: Energy-Efficient, Cost-Effective and Environmentally-Sustainable Systems and Processes, Vols 1-3 / [ed] Rivero, R; Monroy, L; Pulido, R; Tsatsaronis, G, MEXICO: INST MEXICANO DEL PETROLEO , 2004, p. 1151-1160Conference paper (Refereed)
    Abstract [en]

    This paper presents an extended chemical-looping combustion (exCLC), which may be the core process in an advanced power generation system with CO2-capture that cogenerates hydrogen and electrical power. This paper focuses on the description of the exCLC and its novelty compared to the classic chemical-looping combustion (CLC), which is known as all efficient alternative for CO2-capture. In CLC. a solid oxygen carrier circulates between two fluidised-bed reactors and transports oxygen from the combustion air to the fuel, thus, the fuel is not mixed with air and an inherent CO2 separation occurs. In addition to the classic CLC, the exCLC inherently separates the CO2 and hydrogen, that is produced by the process. A thermo-chemical study of the exCLC provides the required operating conditions of each step. The results indicate that the production of hydrogen is possible as well as an inherent separation of hydrogen and CO2.

  • 202. Wu, J.
    et al.
    Yan, Jinyue
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes. Mälardalen University, Västerås, Sweden.
    Jia, H.
    Hatziargyriou, N.
    Djilali, N.
    Sun, H.
    Integrated Energy Systems2016In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 167, p. 155-157Article in journal (Refereed)
  • 203. Wu, Jianzhnog
    et al.
    Yan, Jinyue
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology. Mälardalen University, Sweden.
    Desideri, Umberto
    Deconinck, Geert
    Madsen, Henrik
    Huitema, George
    Kolb, Thomas
    Synergies between energy supply networks2017In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 192, p. 263-267Article in journal (Refereed)
  • 204. Xu, H.
    et al.
    Liu, J.
    Qin, D.
    Gao, X.
    Yan, Jinyue
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes.
    Feasibility analysis of solar irrigation system for pastures conservation in a demonstration area in Inner Mongolia2013In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 112, no SI, p. 697-702Article in journal (Refereed)
    Abstract [en]

    Pasture lands in Inner Mongolia of China have been deteriorated severely by overgrazing and climate change in the past 30. years. There is a plan to set up a solar irrigation system in Xilamuren area of the region to restore the pastures effectively. In order to design the solar irrigation system based on groundwater, equations for analyzing the optimum irrigation amount were developed in this study, and the main steps to design the system were also given. The coefficients and parameters in the equations are related to meteorological factors, vegetation types and areas, and soil properties. The soil water content is a control variable to decide the water irrigation amount for its effects on maintaining the vegetation growth based on soil water evaporation, plant transpiration and physiological consumption. According to the pasture restoring objectives and water demands during the plants growing periods, proper soil water contents are chosen as evaluation basis for irrigation. The groundwater system should be kept healthy during exploitation; so, the possible supply of local groundwater is a constraint condition in the model. Besides, an optimum irrigation amount process in a whole year is provided for the solar powered system design.

  • 205.
    Yan, Jinyue
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes. Malardalen University, Sweden.
    Carbon Capture and Storage (CCS)2015In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 148, p. A1-A6Article in journal (Refereed)
  • 206.
    Yan, Jinyue
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes.
    Decoupling between development and emissions: Innovative climate change mitigation systems and technologies2010In: Proceedings of the first international conference on sustainable urbanization (ICSU 2010), Kowloon: Hong Kong Polytechnic Univ, Fac Construction & Environment , 2010, p. 734-734Conference paper (Refereed)
    Abstract [en]

    A direct link between emissions and GDP is experienced in the most countries. The urgent actions for mitigating climate change call for the decoupling of the economic growth from emissions. Innovative climate change mitigation technologies and systems have critical roles to play in reducing greenhouse gas emissions and increasing greenhouse gas sinks. This presentation will review the experiences of the decoupling in Sweden, as an example. The wider adoption of existing climate-friendly technologies, and the development and deployment of demonstrated, new and improved and innovative technologies and increased utilization of non-fossil fuels are of importance together with the favorable policy incentives. Realizing the potential to reduce greenhouse gases emissions requires combined actions in all sectors of economy including adoption of energy-efficient technologies and practices, increased fuel switching toward lower carbon fuels, combined growth in the use of efficient energy systems, greater reliance on renewable energy sources, physical sequestration of CO2, and improving the end-use efficiency of energy uses etc. This talk also presents the technically integrated options related to renewable biomass energy systems for mitigating GHG emissions. Those options include industrial process improvement, energy optimization and integration with advanced power generation technologies, and integration of industrial processes with carbon capture and storage (CCS). Such options could create a new opportunities and possibilities for the future carbon-constrained economy, which may result in a "negative CO2 emission" energy system. The presentation will address the integration of CO2 capture into large industrial processes integrated with renewable bioenergy resources. Different possibilities with integrated energy systems will be proposed and analyzed.

  • 207.
    Yan, Jinyue
    KTH, School of Chemical Science and Engineering (CHE). Malardalen Univ, Sch Business Soc & Engn, Vasteras, Sweden..
    ENERGY TECHNOLOGY Negative-emissions hydrogen energy2018In: Nature Climate Change, ISSN 1758-678X, E-ISSN 1758-6798, Vol. 8, no 7, p. 560-561Article in journal (Refereed)
    Abstract [en]

    The race against time to mitigate climate change has increasingly focused on the development and deployment of bioenergy with carbon capture and storage. New research shows that negative-emissions hydrogen production is potentially a cost-effective alternative.

  • 208.
    Yan, Jinyue
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes.
    Transitions of the future energy systems Editorial of year 2013 for the 101th volume of Applied Energy2013In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 101, p. 1-2Article in journal (Other academic)
  • 209.
    Yan, Jinyue
    et al.
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes.
    Chen, B.
    Wennersten, R.
    Campana, P.
    Yang, J.
    Cleaner energy for transition of cleaner city2017In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 196, p. 97-99Article in journal (Refereed)
  • 210.
    Yan, Jinyue
    et al.
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes.
    Chou, S. K.
    Chen, Bin
    Sun, Fengchun
    Jia, Hongjie
    Yang, Jin
    Clean, affordable and reliable energy systems for low carbon city transition2017In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 194, p. 305-309Article in journal (Refereed)
  • 211.
    Yan, Jinyue
    et al.
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes.
    Chou, S. K.
    Dahlquist, E.
    Recent progress in sustainable energy systems2013In: International journal of energy research (Print), ISSN 0363-907X, E-ISSN 1099-114X, Vol. 37, no 15, p. 1937-1938Article in journal (Other academic)
  • 212.
    Yan, Jinyue
    et al.
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes. Mälardalen University, Sweden .
    Chou, S. K.
    Dahlquist, E.
    Li, H.
    Innovative Research For Sustainable Energy Systems2015In: International Journal of Green Energy, ISSN 1543-5075, E-ISSN 1543-5083, Vol. 12, no 3, p. 191-191Article in journal (Other academic)
  • 213.
    Yan, Jinyue
    et al.
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes.
    Chou, S. K.
    Desideri, U.
    Tu, S. T.
    Jin, H. G.
    Research, development and innovations for sustainable future energy systems2013In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 112, p. 393-395Article in journal (Refereed)
  • 214.
    Yan, Jinyue
    et al.
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes. Mälardalen University, Sweden.
    Chou, S. K.
    Desideri, U.
    Xia, X.
    Innovative and sustainable solutions of clean energy technologies and policies (Part II)2014In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 136, p. 756-758Article in journal (Refereed)
  • 215.
    Yan, Jinyue
    et al.
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes. Malardalen Univ, Sch Sustainable Dev Soc & Technol, S-72123 Vasteras, Sweden.
    Chou, S. K.
    Desideri, U.
    Xia, Xiaohua
    Innovative and sustainable solutions of clean energy technologies and policies (Part I)2014In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 130, p. 447-449Article in journal (Other academic)
  • 216.
    Yan, Jinyue
    et al.
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes. Mälardalens University, Sweden.
    Chou, S. K.
    Li, H.
    Nian, V.
    Editorial: Leveraging Energy Technologies and Policy Options for Low Carbon Cities2017In: Leveraging Energy Technologies and Policy Options for Low Carbon Cities, Elsevier, 2017, Vol. 143, p. 1-2Conference paper (Refereed)
  • 217.
    Yan, Jinyue
    et al.
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes.
    Chou, Siaw-Kiang
    Desideri, Umberto
    Lee, Duu-Jong
    Transition of clean energy systems and technologies towards a sustainable future (Part I)2015In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 160, p. 619-622Article in journal (Other academic)
  • 218.
    Yan, Jinyue
    et al.
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes. Mälardalens Högskola, Sweden.
    Chou, Siaw-Kiang
    Desideri, Umberto
    Lee, Duu-Jong
    Transition of clean energy systems and technologies towards a sustainable future (Part II)2016In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 162, p. 1109-1113Article in journal (Other academic)
  • 219.
    Yan, Jinyue
    et al.
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes.
    Desideri, U.
    Chou, S. K.
    Li, H.
    Energy solutions for a sustainable world2016In: International Journal of Green Energy, ISSN 1543-5075, E-ISSN 1543-5083, Vol. 13, no 8, p. 757-758Article in journal (Refereed)
  • 220.
    Yan, Jinyue
    et al.
    KTH, Superseded Departments, Chemical Engineering and Technology.
    Eidensten, L.
    Status and perspective of externally fired gas turbines2000In: Journal of Propulsion and Power, ISSN 0748-4658, E-ISSN 1533-3876, Vol. 16, no 4, p. 572-576Article in journal (Refereed)
    Abstract [en]

    Power generation with an externally fired gas turbine (EFGT) is a promising technology for solid fuels such as coal and biomass because it offers high efficiency, low cost, and low environmental impacts. Different systems of EFGT are presented, including externally fired combined cycles and externally fired humid air turbines. Recent research and engineering development of the technologies are reviewed. Topics including system configurations, thermal efficiencies, and high-temperature heat exchangers issues are discussed. The results of this study can be applied to guide the future development of solid-fuel-based externally fired gas turbine systems.

  • 221.
    Yan, Jinyue
    et al.
    KTH, Superseded Departments, Chemical Engineering and Technology.
    Ji, Xiaoyan
    KTH, Superseded Departments, Chemical Engineering and Technology.
    Jonsson, M.
    Thermodynamic property models for the simulation of advanced wet cycles2003In: American Society of Mechanical Engineers, International Gas Turbine Institute, Turbo Expo (Publication) IGTI, 2003, Vol. 3, p. 211-219Conference paper (Refereed)
    Abstract [en]

    Advanced gas turbine cycles with water or steam addition (i.e., wet cycles) have attracted much interest in recent years and some commercial systems are available. Because water is added into different points of a gas turbine depending on the methods of water addition, the working fluid of gas turbine has been changed to air-water (humid air) mixture at elevated pressure. Thus, the thermodynamic properties of working fluid are different as conventional gas turbines. Accurate calculation models for thermodynamic properties of air-water mixture are of importance for process simulation, and traceable performance test of turbomachinery and heat exchangers in the wet cycle systems. However, the impacts of thermodynamic properties on the simulation of systems and their components have been overlooked. This paper is to present our study and provide a comprehensive comparison of exiting thermodynamic models of air-water mixtures. Different models including ours have been used to calculate some components including compressor, humidification tower, heat exchanger etc. in wet cycles for investigating the impacts of thermodynamic properties on the system performance. It reveals that a careful selection of thermodynamic property model is crucial for the design of cycles. This paper will provide a useful tool for predicting the performance of the system and design of the wet cycle components and systems.

  • 222.
    Yan, Jinyue
    et al.
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes.
    Naqvi, Muhammad Raza
    Dahlquist, Erik
    Malardalen University.
    Bioenergy polygeneration, carbon capture and storage related to the pulp and paper industry and power plants2013In: Biomass as Energy Source: Resources, Systems and Applications / [ed] Dahlquist E., Boca Raton: CRC Press, 2013Chapter in book (Refereed)
  • 223.
    Yan, Jinyue
    et al.
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes. Mälardalen Univ.
    Shamim, T.
    Chou, S. K.
    Desideri, U.
    Li, H.
    Clean, efficient and affordable energy for a sustainable future2017In: APPLIED ENERGY, ISSN 0306-2619, Vol. 185, p. 953-962Article in journal (Refereed)
  • 224.
    Yan, Jinyue
    et al.
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes.
    Shamim, T.
    Choud, S. K.
    Li, H.
    Clean, Efficient and Affordable Energy for a Sustainable Future - The Proceedings of the 7th International Conference on Applied Energy (ICAE2015)2015In: CLEAN, EFFICIENT AND AFFORDABLE ENERGY FOR A SUSTAINABLE FUTURE, Elsevier, 2015, p. 1-2Conference paper (Refereed)
  • 225.
    Yan, Jinyue
    et al.
    KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemical Engineering.
    Sun, F.
    Chou, S. K.
    Desideri, U.
    Li, H.
    Campana, P. E.
    Xiong, R.
    Transformative Innovations for a Sustainable Future2017In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 204, p. 867-872Article in journal (Refereed)
    Abstract [en]

    Solar photovoltaic (PV) technology receives much attention. An algorithm based on the Lock-On Mechanism for the maximum power point tracking on the hybrid PV/TEG system was discussed, which proved to be fast and stable in comparison to the conventional fixed step hill climbing algorithm. Combined cycles are also suffering a drawback due to the implementation of large scale renewable energy systems in electric grids. However, gas turbines and combined cycles have always featured very high efficiency and a suitability of being used in combined heat and power and combined cooling heat and power plants that is uncommon among fossil fired power plants. For this reason it is important to continue studying those systems improving their performance even further and integrating the energy and mass flows between combined cycles and other energy systems. LNG production will increase further in the future, since it is expected that LNG might replace diesel or gasoline as a transportation fuel. For the battery management system electric vehicles, a multi-timescale method for dual estimation of satate of charge and capacity with an online identified battery model was discussed.

  • 226.
    Yan, Jinyue
    et al.
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology.
    Sun, F.
    Choug, S. K.
    Desideri, U.
    Li, H.
    Campana, P.
    Xiong, R.
    Transformative Innovations for a Sustainable Future - Part II2017In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 207, p. 1-6Article in journal (Refereed)
  • 227.
    Yan, Jinyue
    et al.
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes. Mälardalen University (MDH), Sweden.
    Wennersten, R.
    Chen, B.
    Yang, J.
    Lv, Y.
    Sun, Q.
    Editorial2016In: Energy Procedia, ISSN 1876-6102, E-ISSN 1876-6102, Vol. 104, p. 1-2Article in journal (Refereed)
  • 228.
    Yan, Jinyue
    et al.
    KTH, School of Chemical Science and Engineering (CHE). Mälardalen University.
    Wu, J.
    Li, H.
    Proceedings of the 9th International Conference on Applied Energy2017In: Energy Procedia, ISSN 1876-6102, E-ISSN 1876-6102, Vol. 142, p. 1-2Article in journal (Refereed)
  • 229.
    Yan, Jinyue
    et al.
    KTH. Mälardalen University, Sweden.
    Zhai, Y.
    Wijayatunga, P.
    Mohamed, A. M.
    Campana, P. E.
    KTH.
    Renewable Energy Integration with Mini/Microgrid2016In: Energy Procedia, ISSN 1876-6102, E-ISSN 1876-6102, Vol. 103, p. 1-2Article in journal (Refereed)
  • 230.
    Yan, Jinyue
    et al.
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes. Mälardalen University, Sweden.
    Zhai, Y.
    Wijayatunga, P.
    Mohamed, A. M.
    Campana, P. E.
    Renewable energy integration with mini/micro-grids2017In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 201, p. 241-244Article in journal (Refereed)
  • 231. Yang, J.
    et al.
    Yu, X.
    An, L.
    Tu, S. -T
    Yan, Jinyue
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes.
    CO2 capture with the absorbent of a mixed ionic liquid and amine solution considering the effects of SO2 and O22017In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 194, p. 9-18Article in journal (Refereed)
    Abstract [en]

    Room-temperature ionic liquids (ILs) have recently been proposed as a potential candidate for CO2 capture. In this study, experiments were conducted in an absorption-desorption loop system to investigate the effects of SO2 and O2 on CO2 capture using an aqueous amine solution mixed with IL. The gas mixture containing CO2, O2, SO2 and N2 in the composition range of flue gas from a coal-fired power plant after flue gas desulfurization was selected as the feed gas. It was found that the addition of hydrophilic IL of 1-butyl-3-methylimidazolium tetrafluoroborate ([bmim][BF4]) to a monoethanolamine (MEA) aqueous solution reduced the losses of MEA and water by lowering the saturated vapour pressure of the mixed absorbent. For hydrophobic IL of 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([hmim][Tf2N]), the MEA loss for 30 wt% MEA + 70 wt% [hmim][Tf2N] increased dramatically with the system running because carbonate, which was formed by MEA reacting with CO2, was insoluble in [hmim][Tf2N] at the absorber operation temperature of 323 K. The effects of O2 and SO2 were relatively insignificant for the MEA and water losses. The aqueous amine solution mixed with [bmim][BF4] showed good performances with a CO2 removal efficiency of above 90% and the SO2 concentration at the absorber outlet below 20 ppb. No obvious IL loss was detected. For the absorbent of 30 wt% MEA + 50 wt% [bmim][BF4] + 20 wt% H2O, the thermal energy consumption for absorbent regeneration is 33.8% lower than that of the aqueous MEA solution.

  • 232. Yang, J.
    et al.
    Yu, X.
    Yan, Jinyue
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes. School of Sustainable Development of Society and Technology, Mälardalen University, Västerås, Sweden .
    Tu, S. -T
    Dahlquist, E.
    Effects of SO2 on CO2 capture using a hollow fiber membrane contactor2013In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 112, no SI, p. 755-764Article in journal (Refereed)
    Abstract [en]

    Membrane gas absorption technology is a promising alternative to conventional technologies for the mitigation of acid gases. In this study, with a polypropylene (PP) hollow fiber membrane contactor as absorber and a packed column as stripper, the influence of SO2 on the CO2 capture from coal-fired power plant flue gas was investigated in an absorption-desorption experimental set-up using aqueous monoethanolamine (MEA) as the absorbent. The experimental results showed that the MEA loss per ton captured CO2 increased with the addition of SO2, resulting in sharp decreases in CO2 removal efficiency and mass transfer rate of CO2 after initial several days of operation. This tendency is mainly attributed to the promotional effect of SO2 on the degradation of MEA by the formation of sulfate. Thus, it is necessary to regenerate MEA using a reclaimer in this case. The respective SO2 concentrations at the outlets of absorber and stripper remained constant values of 24 and 120ppb throughout the operation although the CO2 removal efficiency decreased dramatically with time. This co-capture of CO2 and SO2 could play an important role in further desulfuration, thus alleviating the burden of desulfuration to some extent and benefiting the subsequent CO2 purification and storage. More progresses are greatly needed in high-efficiency and stable absorbents, high-efficiency reclaimer, and methods to reduce MEA loss by evaporation.

  • 233. Yang, J.
    et al.
    Yu, X.
    Yan, Jinyue
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes.
    Tu, S. -T
    Xu, M.
    CO2 capture using absorbents of mixed ionic and amine solutions2014In: Energy Procedia, 2014, p. 2849-2853Conference paper (Refereed)
    Abstract [en]

    Studies have been conducted to find new absorbents for post-combustion CO2 capture. To overcome the ILs' limits and meanwhile take their advantages, the mixed amine + IL + H2O solutions as CO2 capture absorbent were investigated in a CO2 absorption/desorption loop setup. It was found that with an increase in IL concentration, the viscosity of the mixed solution rose while the energy required for absorbent regeneration decreased. In addition, no IL loss was detected and the amine loss per ton of captured CO2 was considerably lower than that of aqueous amine solution. The viscosity of the best candidate of 30 wt% MEA + 40 wt% [bmim][BF4] + 30 wt% H2O is close to the value of aqueous amine solution, indicating that the ionic liquid disadvantage of high viscosity can be overcome for absorbent delivery of CO2 capture.

  • 234. Yang, Jie
    et al.
    Yu, Xinhai
    Yan, Jinyue
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes.
    Tu, Shan-Tung
    CO2 Capture Using Amine Solution Mixed with Ionic Liquid2014In: Industrial & Engineering Chemistry Research, ISSN 0888-5885, E-ISSN 1520-5045, Vol. 53, no 7, p. 2790-2799Article in journal (Refereed)
    Abstract [en]

    It is a focus to reduce the energy consumption and operating cost of CO2 capture from low-pressure flue gas streams of power plants using an aqueous amine-based absorbent. In this study, CO2 capture experiments were conducted in an absorption-desorption loop system using amine-based absorbents. The gas mixture containing CO2, O-2, SO2, and N-2 in the composition range of flue gas from coal-fired power plant after flue gas desulfurization was selected as the feed gas. For an aqueous amine solution, the largest contribution to monoethanolamine (MEA) loss was made by evaporation during desorption, followed by the formation of sulfate and heat-stable salts. To reduce MBA loss and meanwhile decrease the energy consumption during CO2 desorption, an aqueous amine solution mixed with ionic liquid (30 wt % MBA + 40 wt % [bmim][BF4] + 30 wt % H2O) was proposed. The energy consumption of the mixed ionic liquid solution for absorbent regeneration was 37.2% lower than that of aqueous MEA solution. The MEA loss per ton of captured CO2 for the mixed solution was 1.16 kg, which is much lower than that of 3.55 kg for the aqueous amine solution. No ionic liquid loss was detected. In addition, the mixed ionic liquid solution showed a low viscosity of 3.54 mPa s at 323 K, indicating that the ionic liquid disadvantage of high viscosity can be overcome for absorbent delivery of CO2 capture.

  • 235. Yang, Jin
    et al.
    Olsson, Alexander
    Yan, Jinyue
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes.
    Chen, B.
    A hybrid life-cycle assessment of CO2 Emissions of a PV water pumping system in China2014In: Energy Procedia, 2014, p. 2871-2875Conference paper (Refereed)
    Abstract [en]

    To achieve both water conservation and climate change mitigation benefits, photovoltaic water pumping (PVWP) system, which employs solar energy to fuel the water pumping system, has been a widely adopted solar energy technology in the last two decades. Although the PVWP system is driven by direct renewable flux, and has no onsite CO2 emissions, there must be energy consumed during the production of PV modules and the operation of water pumping system. Thus, we estimated the CO2 emissions of a PVWP system in Inner Mongolia, China in a life cycle perspective. A hybrid Life Cycle Analysis (LCA), which combines process-sum and economic input-out analysis was employed to reduce uncertainty. Results show that PVWP is a good choice for carbon emission reduction with carbon sequestration benefit much higher than the lifetime carbon emissions. The largest emitters are PV module and engineering, which should be the focus of carbon management of PVWP system.

  • 236. Yang, Perry Pei-Ju
    et al.
    Yan, Jinyue
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes.
    Modeling Urban Design with Energy Performance2016In: CUE 2015 - APPLIED ENERGY SYMPOSIUM AND SUMMIT 2015: LOW CARBON CITIES AND URBAN ENERGY SYSTEMS, 2016, p. 3-8Conference paper (Refereed)
    Abstract [en]

    Traditional urban design methods focus on the form-making process and lack performance dimensions such as energy efficiency. There are inherent differences between Urban Design as a model of decision-making for choosing form alternatives and Energy System Modeling as a model of evaluating and assessing system functions. To design a high energy performance city, the gap between the two models must be bridged. We propose a research design that combines the Urban Design Computational Model (UDCM) and the Optimization Model of Energy Process (OMEP) to demonstrate how an urban design computation can be integrated with an energy performance process and system. An evidence-based case study of community-level near zero energy districts will be needed for future work.

  • 237.
    Yang, Xiaohu
    et al.
    KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemical Engineering, Energy Processes. Xi'an Jiaotong University, Xi'an, China.
    Bai, Q.
    Zhang, Q.
    Hu, W.
    Jin, L.
    Yan, Jinyue
    KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemical Engineering, Energy Processes. Mälardalen University (MDH), Västerås, Sweden.
    Thermal and economic analysis of charging and discharging characteristics of composite phase change materials for cold storage2018In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 225, p. 585-599Article in journal (Refereed)
    Abstract [en]

    This study conducted both experimental and numerical investigations on the solidification behavior in a metal foam composite phase change material (PCM) for cold storage. Volume-average-method was adopted with the help of Forchheimer-Darcy equation to model the fluid flow through porous media. Experimental measurements were performed to validate the analytical model and the numerical method, with good agreement achieved. Local thermal equilibrium and non-equilibrium states were justified numerically and experimentally. Effect of pore morphological parameters (porosity and pore density) upon the solidification features of composite PCM were investigated. For the appliance of composite PCM to cold storage, techno-economic characteristics was also assessed. Results demonstrated that the full solidification time for metal foams with a porosity of 0.93 and 0.97 can be saved 87.5% and 76.7% respectively compared with pure water. It indicated that porosity of metal foam played a dominant role in heat transfer enhancement; while pore density seemed to have little influence on phase change behavior according to the results. Local natural convection in the unsolidified phase caused a remarkable promotion of the interface evolution, and the full solidification time with natural convection considered can be saved by 14.3% compared with pure conduction for the case with the same porosity of 0.97. The economic analyses indicated that using composite PCM was profitable with a short payback period less than 2 years.

  • 238.
    Yang, Xiaohu
    et al.
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes. Xi'an Jiaotong University, China; Mälardalen University, Sweden.
    Lu, Z.
    Bai, Q.
    Zhang, Q.
    Jin, L.
    Yan, Jinyue
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes. Mälardalen University, Sweden.
    Thermal performance of a shell-and-tube latent heat thermal energy storage unit: Role of annular fins2017In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 202, p. 558-570Article in journal (Refereed)
    Abstract [en]

    This study conducts numerical investigations on melting process in a shell-and-tube latent heat thermal energy storage (LHTES) unit with annular fins. Commercial grade paraffin is employed as the phase change material (PCM) and water serves as the heat transfer fluid (HTF). Finite-volume-method (FVM) based numerical simulations are performed to investigate the effects of fin number, height and thickness on the phase change process. Particular attention is made to justify the contribution of local natural convection to the overall phase change process. Results demonstrate that the full melting time could be maximally reduced by 65% by inserting annular fins into PCM. For maximizing thermal performance, an optimal group fin parameter (fin number N = 31, thickness t/l = 0.0248 and interval l/L = 0.0313) is recommended for the present study.

  • 239. Yang, Y.
    et al.
    Zhang, Yang
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes.
    Campana, P. E.
    Yan, Jinyue
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes. Mälardalen University, Sweden.
    Peak-shaving and profit-sharing model by Aggregators in residential buildings with PV- a case study in Eskilstuna, Sweden2017In: Proceedings of the 9th International Conference on Applied Energy, Elsevier, 2017, Vol. 142, p. 3182-3193Conference paper (Refereed)
    Abstract [en]

    Nowadays, photovoltaic (PV) system combined with energy storage systems is playing increasing significant role in residential buildings in Sweden. At the same time it brings reliability problems because of the intermittency of electricity production and exceptionally distributed reservoir which is followed by the peak-valley electricity prices and power grid fluctuations. There is an increasing need for new business model and economic paradigm for a third party aggregator to bridge the gap between Power Grid and end-users. Providing the valuable electricity services at scale and breaking regulatory arbitrage, aggregators help to deliver desired levels of residents' engagements, value-added services and feasible level of unbundling of electricity market. This paper analyzes how the aggregators grab the indisputable business opportunity to interact between residents and Power Grid from the perspective of physical electricity flows and benefits share of peak-shaving. We employ a real case in Eskilstuna in Sweden to design new business model and validate using data. And the result indicates the compatibility of the aggregator service and its business model. It further sheds light on the pricing model of generated electricity by PV system, and benefits share ratio design.

  • 240. Yin, C.
    et al.
    Yan, Jinyue
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes. Mälardalen University, Sweden.
    Oxy-fuel combustion of pulverized fuels: Combustion fundamentals and modeling2016In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 162, p. 742-762Article in journal (Refereed)
    Abstract [en]

    Oxy-fuel combustion of pulverized fuels (PF), as a promising technology for CO2 capture from power plants, has gained a lot of concerns and also advanced considerable research, development and demonstration in the past years worldwide. The use of CO2 or the mixture of CO2 and H2O vapor as the diluent in oxy-fuel combustion, instead of N2 in conventional air-fuel combustion, induces significant changes to the combustion fundamentals, because of the great differences in the physical properties and chemical effects of the different diluents. Therefore, some fundamental issues and technological challenges need to be properly addressed to develop oxy-fuel combustion into an enabled technology. Computational Fluid Dynamics (CFD) modeling, which has been proven to be a very useful and cost-effective tool in research and development of conventional air-fuel combustion, is expected to play a similarly vital role in future development of oxy-fuel combustion technology. The paper presents a state-of-the-art review and an in-depth discussion of PF oxy-fuel combustion fundamentals and their modeling, which underpin the development of this promising technology. The focus is placed on the key issues in combustion physics (e.g., turbulent gas-solid flow, heat and mass transfer) and combustion chemistry (e.g., pyrolysis, gas phase combustion and char reactions), mainly on how they are affected in oxy-fuel conditions and how they are modeled and implemented into CFD simulations. The system performance of PF oxy-fuel combustion is also reviewed. Finally, the current status of PF oxy-fuel combustion fundamentals and modeling is concluded and the research needs in these regards are suggested.

  • 241. Yong, C.
    et al.
    Jinyue, Yan
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes.
    Asian biofuel development at a crossroads2007In: Renewable Energy for Development, ISSN 1101-8267, Vol. 20, no 2, p. 6-7Article in journal (Refereed)
    Abstract [en]

    Some of the views on the development of Asian biofuel at a crossroad are discussed. Different strategic choice in technologies and market development can lead to different prospects for Asian biofuel development. Malaysia and Indonesia are expanding their palm oil cultivation in the hope of exporting at least 30% of the bio-diesel to the European countries. China is the third largest bioethanol produces in the world after Brazil and US. The reason behind the drastic increase of non-state-owned biofuels processors in China is the potential international demand, particularly for the European Union. Some of the Asian countries such as China, India, and the Philippines are trying to create or enlarge domestic markets by introducing a blending mandate to reduce the growing dependency on imported oil. India jatropha and pongamia strategies are intended to balance the disparity between urban and rural development and also to decrease oil imports.

  • 242. Yu, Aiping
    et al.
    Chen, Zhongwei
    Maric, Radenka
    Zhang, Lei
    Zhang, Jiujun
    Yan, Jinyue
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes.
    Electrochemical supercapacitors for energy storage and delivery: Advanced materials, technologies and applications2015In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 153, p. 1-2Article in journal (Refereed)
  • 243. Yu, Biying
    et al.
    Ma, Ye
    Xue, Meimei
    Tang, Baojun
    Wang, Bin
    Yan, Jinyue
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology.
    Wei, Yi-Ming
    Environmental benefits from ridesharing: A case of Beijing2017In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 191, p. 141-152Article in journal (Refereed)
    Abstract [en]

    Emerging ridesharing travel could be an effective way in China to reduce travel demand by cars, which can further seek to shift personal transportation choices from an owned asset to a service used on demand and lessen the traffic jam and emissions. Drawing on the raw observed ridesharing trip data provided by DiDi Chuxing company, this study evaluated the direct environmental benefits of ridesharing resulted from the travel mode shift and the indirect environmental benefits resulted from the attitude change towards car purchase behavior. The megacity Beijing is taken as the empirical context given its more serious situation of traffic congestion and difficulties for car purchase. Estimation results show that direct annual energy savings made by ridesharing are approximately 26.6 thousand tce, and annual emission reductions of CO2 and NOx are approximately 46.2 thousand tons and 253.7 tons, respectively. Besides, using ridesharing service will lead to substantial energy savings and emission reductions from the long-term perspective attributing to the weakening willingness on purchasing new cars. Promoting EVs among ridesharing vehicles and switching to clean electricity generation as well as improving vehicle efficiency can further enhance the environmental benefits of ridesharing, with maximum effects amounting to 67% of energy savings and 57% of CO2 emission reductions compared to 2016 level of the fuel related energy consumption and emissions made by ridesharing.

  • 244. Yu, X.
    et al.
    An, L.
    Yang, J.
    Tu, S. -T
    Yan, Jinyue
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes. Mälardalen University, Sweden.
    CO2 capture using a superhydrophobic ceramic membrane contactor2015In: Journal of Membrane Science, ISSN 0376-7388, E-ISSN 1873-3123, Vol. 496, p. 1-12, article id 13949Article in journal (Refereed)
    Abstract [en]

    The wetting and fouling of a membrane contactor deteriorated performance of the membrane gas absorption system for CO<inf>2</inf> post-combustion capture in coal-fired power plants. To solve these problems, in this study, a superhydrophobic ceramic (SC) membrane contactor was fabricated from an alumina tube with a ZrO<inf>2</inf> layer by means of grafting with fluoroalkylsilane (FAS) in a triethoxy-1H,1H,2H,2H-tridecafluoro-n-octylsilane solution. The performances of the SC membrane contactor and polypropylene (PP) hollow fiber membrane contactor were compared through experiments conducted in a CO<inf>2</inf> absorption experimental system using a monoethanolamine (MEA) aqueous solution. Although the membrane fabrication cost per effective membrane area (CPA) of the SC membrane is 12.5 times that of the PP hollow fiber membrane, the SC membrane fabrication cost per absorbed CO<inf>2</inf> flux (CPC) was lower than that of the PP membrane. For the SC membrane, the detrimental effect of wetting can be alleviated by periodic drying to ensure a high CO<inf>2</inf> removal efficiency (>90%). Drying does not work for the PP membrane because the swelling of the PP fibers is irreversible. The SC membrane contactor exhibited a better anti-fouling ability than the PP membrane contactor because the superhydrophobic surface can self-clean. To ensure a continuous, high-efficiency CO<inf>2</inf> removal, a method was proposed in which two-hollow fiber SC membrane contactors operate alternately with the addition of periodic drying. The SC hollow fiber membrane contactor shows great potential in real industrial CO<inf>2</inf> post-combustion capture because of its good anti-wetting and anti-fouling features.

  • 245. Yu, X.
    et al.
    Yang, J.
    Lu, H.
    Tu, S.-T.
    Yan, Jinyue
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes. School of Business Society and Technology, Mälardalen University, Västerås, Sweden.
    Energy-efficient extraction of fuel from Chlorella vulgaris by ionic liquid combined with CO2 capture2015In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 160, p. 648-655Article in journal (Refereed)
    Abstract [en]

    Algae-sourced feedstocks remain confined to commercialization because of the high cost and energy consumption of biomass cultivation and feedstock extraction. In this study, to reduce the energy consumption required for algae extraction, experiments with Chlorella vulgais extraction by ionic liquids (ILs) combined with CO<inf>2</inf> capture were conducted considering that captured CO<inf>2</inf> by ILs can compensate the energy consumption of extraction. The results showed that the addition of CO<inf>2</inf> to [BMIM][BF<inf>4</inf>] increased the lipid yield of Chlorella vulgaris from 68.0% to 75.6%. The properties of synthesized biodiesel from C. vulgaris lipids met the UNE-EN 14214 European biodiesel standard except for oxidative stability. Protein denaturation and degradation were found during the lysis of algae cells. Approximately 82.2wt.% of the total extracted proteins could be precipitated during both algae lysis and supernatant liquid drying. A microalgae-to-biofuel route including C. vulgaris extraction and CO<inf>2</inf> capture was proposed that involves wet algae input and delivery outputs of water, biodiesel, pyrolysis oil, proteins, sugars, biogas and glycerol. Fossil energy ratios (FER) based on the overall energy balance were 3.30 (n= 1, n is the volume ratio of IL to wet algae) and 3.84 (n= 2) for [BMIM][BF<inf>4</inf>] with CO<inf>2</inf> capture, approximately 2.5 times those based on commercially available technologies. The possibilities of synthesizing novel ILs that show both high CO<inf>2</inf> absorption and good abilities in cell wall breakage are discussed. More progress is greatly needed to reduce IL recovery loss.

  • 246. Yu, Xinhai
    et al.
    Li, Hongliang
    Tu, Shan-Tung
    Yan, Jinyue
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes.
    Wang, Zhengdong
    Pt-Co catalyst-coated channel plate reactor for preferential CO oxidation2011In: International journal of hydrogen energy, ISSN 0360-3199, E-ISSN 1879-3487, Vol. 36, no 5, p. 3778-3788Article in journal (Refereed)
    Abstract [en]

    To achieve preferential CO oxidation, a Pt-Co catalyst-coated channel plate reactor (CCPR) was produced via conventional mechanical milling and catalyst coating. The proposed reactor performed well under a wide range of operating temperatures and provided satisfactory results at low temperatures (CO concentrations of 1-10 ppm at 413-443 K and 1-50 ppm at 413-453 K). In the proposed CCPR, significant deactivation was not observed during continuous operation for 100 h. In addition, the reactor exhibited excellent tolerance to undesirable conditions, including reaction temperature runaway and feeding stream failure. Characterisation results indicated that the catalytic activity of the proposed CCPR was high due to the formation of Pt3Co intermetallic compounds and nanoscale metal particles. The capacity per channel of the proposed CCPR was approximately 50-100 times greater than those of conventional microchannel reactors; thus, problems associated with excessive reactors were significantly reduced. In general, the results indicated that CCPR has great potential in the small-scale production of hydrogen for fuel cells.

  • 247. Yu, Xinhai
    et al.
    Wen, Zhenzhong
    Li, Hongliang
    Tu, Shan-Tung
    Yan, Jinyue
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes.
    Transesterification of Pistacia chinensis oil for biodiesel catalyzed by CaO-CeO2 mixed oxides2011In: Fuel, ISSN 0016-2361, E-ISSN 1873-7153, Vol. 90, no 5, p. 1868-1874Article in journal (Refereed)
    Abstract [en]

    This study investigates the use of CaO-CeO2 mixed oxides as solid base catalysts for the transesterification of Pistacia chinensis oil with methanol to produce biodiesel. These CaO-CeO2 mixed-oxide catalysts were prepared by an incipient wetness impregnation method and characterized by X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy and scanning electron microscopy. The cerium improved the heterogeneous catalytic stability remarkably due to the defects induced by the substitution of Ca ions for Ce ions on the surface. The best catalyst was determined to be C0.15-973 (with a Ce/Ca molar ratio of 0.15 and having been calcined at 973 K), considering its catalytic and anti-leaching abilities. The effects of reaction parameters such as the methanol/oil molar ratio, the amount of catalyst amount and the reaction temperature were also investigated. For the C0.15-973 regenerated after five reuses, the biodiesel yield was 91%, which is slightly less than that of the fresh sample. The test results revealed that the CaO-CeO2 mixed oxides have good potential for use in the large-scale biodiesel production.

  • 248. Yu, Xinhai
    et al.
    Wen, Zhenzhong
    Lin, Ying
    Tu, Shan-Tung
    Wang, Zhengdong
    Yan, Jinyue
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes.
    Intensification of biodiesel synthesis using metal foam reactors2010In: Fuel, ISSN 0016-2361, E-ISSN 1873-7153, Vol. 89, no 11, p. 3450-3456Article in journal (Refereed)
    Abstract [en]

    This study presents a technology for continuous and high-efficiency alkali-catalyzed biodiesel synthesis using a metal foam reactor combined with a passive mixer. A metal foam reactor with higher pore density produces smaller droplets that result in higher efficiency of biodiesel synthesis. Compared with conventional stirred reactors, the time for high methyl ester conversion can be shortened remarkably by the use of metal foam reactors. Experimental results reveal that a metal foam reactor of 50 pores per inch exhibits an energy consumption per gram biodiesel of 1.01 J g(-1), merely 1.69% and 0.77% of energy consumption of the zigzag micro-channel and conventional stirred reactors, respectively. Moreover, biodiesel yield per reactor for the metal foam reactor is approximately 60 times that of the zigzag micro-channel reactor, thus overcoming the problem of numbering up an excessive number of reactors in the application. These results indicate the great potential of metal foam reactors in small-fuel biodiesel processing plants for distributive applications.

  • 249.
    Zhang, Cheng
    et al.
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes.
    Yan, Jinyue
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes. Mälardalen University, Västerås, Sweden.
    CDM’s influence on technology transfers: A study of the implemented clean development mechanism projects in China2015In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 158, p. 355-365Article in journal (Refereed)
    Abstract [en]

    Technology transfers through the Clean Development Mechanism (CDM) under the Kyoto Protocol is one of the most important catalysts in the cooperation between developed (Annex I) and developing (non-Annex I) countries for climate change mitigation. With the large-scale implementation of CDM projects in recent years, it is important to timely and comprehensively analyze the effectiveness of technology transfers in these implemented projects on the level of individual countries. In this context, China is of particular significance as it is the biggest host country of CDM projects in the world; 50% of total CDM projects implemented from 2007 to 2012 have issued Certified Emission Reductions (CERs) to 60% of all of the CDM projects. In this study, we evaluated the performance of technology transfers in an exclusive database of 754 CDM projects hosted by China between 2007 and 2012 with issued CERs since CERs were first issued in China. In addition, we developed a logistic regression approach using 11-variables that include a series of extended technology transfer-based indicators from the perspectives of project design, economic level, and technology capability that have not been studied in detail in the past. The results show that technology transfers are more likely to occur in large-sized projects with higher CER incomes, in projects with international participants, and in projects involving types such as HFC-23 reduction, fuel substitute, and N<inf>2</inf>O decomposition, in comparison to projects involving renewable energy. We observed that over 90% of the technology transfer projects only include importation of equipment or training to China. In our findings of the regression results, it shows that technology transfers occurred more often in regions with lower technology capabilities, less energy consumption, and a lower GDP growth rate. Supported by high local technology capability and the governmental strategy with independent innovation, the advantages of introducing technology from other countries are offset by local technology diffusion. In a market view, financial incentives hinder CDM host parties from introducing new equipment or trainings for the high marginal cost, unless the high marginal cost of technology transfer can be offset by a large CDM with a high CER income. Technology transfer is more income-driven than sustainability-driven at the present stage in China. In our analysis, the drive out effect between HFC-23 and renewable projects in CDM suggests China government to publish more effective incentives to attract more sustainable types of CDM projects with a higher level of technology innovation. The results are also discussed in the context of policy issues, which can be helpful for the decision makers when formulating future sustainable strategic plans and policy.

  • 250.
    Zhang, Chi
    et al.
    KTH, School of Chemical Science and Engineering (CHE). Ningbo RX New Materials Technology Co., China.
    Campana, P. E.
    Yang, Jin
    KTH, School of Chemical Science and Engineering (CHE). Ningbo RX New Materials Technology Co., China; China University of Geosciences, China.
    Yan, Jinyue
    KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology. Mälardalen University, Sweden.
    Economic performance of photovoltaic water pumping systems with business model innovation in China2017In: Energy Conversion and Management, ISSN 0196-8904, E-ISSN 1879-2227, Vol. 133, p. 498-510Article in journal (Refereed)
    Abstract [en]

    Expansion by photovoltaic (PV) technologies in the renewable energy market requires exploring added value integrated with business model innovation. In recent years, a pilot trial of PV water pumping (PVWP) technologies for the conservation of grassland and farmland has been conducted in China. In this paper, we studied the added value of the PVWP technologies with an emphasis on the integration of the value proposition with the operation system and customer segmentation. Using the widely used existing PV business models (PV-roof) as a reference, we evaluated discounted cash flow (DCF) and net present value (NPV) under the scenarios of traditional PV roof, PVWP pilot, PVWP scale-up, and PVWP social network, where further added value via social network was included in the business model. The results show that the integrated PVWP system with social network products significantly improves the performance in areas such as the discounted payback period, internal rate of return (IRR), and return on investment (ROI). We conclude that scenario PVWP social network with business model innovation, can result in value add-ins, new sources of revenue, and market incentives. The paper also suggests that current policy incentives for PV industry are not efficient due to a limited source of revenue, and complex procedures of feed-in tariff verification.

23456 201 - 250 of 268
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