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  • 1.
    Hasselqvist, Hanna
    et al.
    KTH, Skolan för datavetenskap och kommunikation (CSC), Medieteknik och interaktionsdesign, MID.
    Bogdan, Cristian
    KTH, Skolan för datavetenskap och kommunikation (CSC), Medieteknik och interaktionsdesign, MID.
    Romero, Mario
    KTH, Skolan för datavetenskap och kommunikation (CSC), High Performance Computing and Visualization (HPCViz).
    Shafqat, Omar
    KTH, Skolan för industriell teknik och management (ITM), Energiteknik, Tillämpad termodynamik och kylteknik.
    Supporting Energy Management as a Cooperative Amateur Activity2015Inngår i: Proceedings of the 33rd Annual ACM Conference Extended Abstracts on Human Factors in Computing Systems, ACM Digital Library, 2015, s. 1483-1488Konferansepaper (Fagfellevurdert)
    Abstract [en]

    There is increasing concern regarding current energy feedback approaches as they focus on the individual level, and mostly on household electricity, while the bulk of energy use often lies in heating and cooling. The aim is typically to change user routines, which does not bring a long-lasting impact. In our case study, we address these concerns for apartment buildings by looking at housing cooperatives, the dominant form of apartment ownership in the Nordic countries. These cooperatives manage the heating costs in common and therefore have a large potential for energy saving through long-lasting improvements and investments. We also emphasise the amateur nature of energy work within such cooperatives and consider the implications of our field study findings, interpreted through these amateur and cooperative perspectives, for the design of interactive artefacts.

  • 2.
    Shafqat, Omar
    et al.
    KTH, Skolan för elektroteknik och datavetenskap (EECS), Elkraftteknik.
    Rosberg, Erik
    KTH, Skolan för elektroteknik och datavetenskap (EECS), Medieteknik och interaktionsdesign, MID.
    Bogdan, Cristi
    KTH, Skolan för elektroteknik och datavetenskap (EECS), Medieteknik och interaktionsdesign, MID.
    Lundström, Anders
    KTH, Skolan för industriell teknik och management (ITM), Energiteknik.
    Per-appliance energy feedback as a moving target2019Inngår i: Proceedings of the 6th International Conference on ICT for Sustainability, CEUR-WS , 2019, Vol. 2382Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Energy feedback through interactive technologies is often proposed as a major approach to reduce household energy consumption and carbon footprint. However, this vision is challenged by critics. This paper seeks to inform this debate through a case study of an advanced energy feedback device providing runtime and de-aggregated per-appliance feedback through a smartphone app. This study, based on 15 contextual interviews, aims to investigate how users understand and act on the various levels of feedback received from the device and the resulting impact on user behaviour. We found that appliance detection can be a “moving target” that hampers the intended aims of energy feedback, as it reduces user understanding of the technology. The lack of understanding was further deepened by unrelated supplementary functionality added in the package, in the form of smart plugs. Despite gaining a better understanding of their energy consumption, the users felt limited in terms of their ability to change their behaviour considerably.

  • 3.
    Shafqat, Omar
    et al.
    KTH, Skolan för industriell teknik och management (ITM), Energiteknik, Tillämpad termodynamik och kylteknik.
    Stoltz, David
    KTH, Skolan för industriell teknik och management (ITM), Energiteknik, Tillämpad termodynamik och kylteknik.
    Lundqvist, Per
    KTH, Skolan för industriell teknik och management (ITM), Energiteknik, Tillämpad termodynamik och kylteknik.
    Arias, Jaime
    KTH, Skolan för industriell teknik och management (ITM), Energiteknik, Tillämpad termodynamik och kylteknik.
    Participatory simulation for energy target identification in EcoCities2014Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Cities and Urban centers are hot beds for future innovation in the field of energy efficiency. At present, energy use in cities accounts for more than 60% of total world energy use and this trend is expected to increase with the growth in urbanization in various parts of the world. The role of Ecocities in this regard is of considerable importance. This paper discusses a model that was developed to assist the target setting in the planning process of an Ecocity in China. The Ecocity located in the Wuxi region in China, is currently in its planning stage. The model has been developed with a systems thinking approach, using STELLA. Different sectors comprising the Ecocity i.e. built environment, transport, water and waste management and energy generation have been considered. An effort has been made to take into account various possible synergies and feedbacks in the system that can be utilized to improve the performance of the overall system. An interactive interface has been provided to help different stakeholders in the decision making process. A participatory approach was adopted in the development of the model where different key parameters were identified as a result of a collaborative exercise with the various stakeholders. A framework for Participatory Modeling and Simulation has been developed. The model gives a possibility to visualize the energy saving potential for different technologies being proposed for implementation in the eco-city. Different scenarios have been created in conjunction with the identified sectors to reflect various levels of ambition towards energy saving in the eco-city.

  • 4.
    Stoltz, David
    et al.
    KTH, Skolan för industriell teknik och management (ITM), Energiteknik, Tillämpad termodynamik och kylteknik.
    Shafqat, Omar
    KTH, Skolan för industriell teknik och management (ITM), Energiteknik, Tillämpad termodynamik och kylteknik.
    Arias, Jaime
    KTH, Skolan för industriell teknik och management (ITM), Energiteknik, Tillämpad termodynamik och kylteknik.
    Lundqvist, Per
    KTH, Skolan för industriell teknik och management (ITM), Energiteknik, Tillämpad termodynamik och kylteknik.
    On holistic planning in ecocity development: Today and in the past2014Inngår i: Energy Procedia: International Conference on Applied Energy, ICAE2014, Elsevier, 2014, Vol. 61, s. 2192-2195Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Cities are expected to play an increasingly important role in the future global energy system due to the rapid rate of urbanization. As a reaction to this, the concept of ecological cities, or EcoCities, has gained a foothold in the world and there are numerous commenced EcoCity projects worldwide. As an example, it is said that there are over 250 EcoCity projects in China alone. However, there is no definitive definition of what an EcoCity is per se and thus it is relevant to ask what lies behind the "eco" in these projects. EcoCity planning is generally recommended to be carried out through a holistic planning approach by incorporating a wide range of focus areas in the project. The holistic planning is often claimed to be the key to successful EcoCity projects. Therefore, this article has identified 10 focus areas and used these to evaluate EcoCity projects by analyzing how many of these focus areas that have been taken in consideration in the projects. The higher number of focus areas in consideration, the higher score and thus the higher level of ambition, i.e. The city is planned in a more holistic manner. The projects have also been analyzed by identifying the year of start and geographical location in order to compare whether the level of ambition is varying between different parts of the world and during different time periods and by that identify whether EcoCity projects are planned with a more holistic approach now than earlier.

  • 5. Su, Chang
    et al.
    Shafqat, Omar
    KTH, Skolan för industriell teknik och management (ITM), Energiteknik.
    Lundqvist, Per
    KTH, Skolan för industriell teknik och management (ITM), Energiteknik.
    Ice-storage device application in commercial buildings of Wuxi Sino-Swedish Eco-City2015Inngår i: Refrigeration Science and Technology, International Institute of Refrigeration, 2015, s. 5028-5035Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Wuxi Sino-Swedish Eco-City is a 2.4 km2 demonstration project for innovation in energy technology and integrated smart city solutions in southern China. Due to a high cooling demand from building sector in summer season, there is foreseen to be electricity peak load. The peak requires marginal electricity such as gas turbine to cover the demand, which will bring extra CO2 emission. Ice-storage system once equipped into the building energy system, can be a good solution for balancing the peak load and saving energy. This paper discussed the modelling process of the eco-city's commercial building electricity projection based on icestorage implementation and provides an operation strategy. The simulation results show that the electricity peak can be effectively balanced. A total of 630 ton carbon dioxide can be reduced per year in a certain scenario, and up to 40 thousand Yuan electricity cost can be reduced each year.

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