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Combined Cycle, Heat Pump, and Thermal Storage Integration: Techno-Economic Sensitivity to Market and Climatic Conditions Based on a European and United States Assessment
Thermochemical Power Group, University of Genoa, Via Montallegro 1, Genova 16145, Italy, Via Montallegro 1.
KTH, Skolan för industriell teknik och management (ITM), Energiteknik, Kraft- och värmeteknologi.
KTH, Skolan för industriell teknik och management (ITM), Energiteknik, Kraft- och värmeteknologi.ORCID-id: 0000-0002-7804-667X
Thermochemical Power Group, University of Genoa, Via Montallegro 1, Genova 16145, Italy, Via Montallegro 1.
Vise andre og tillknytning
2023 (engelsk)Inngår i: Journal of engineering for gas turbines and power, ISSN 0742-4795, E-ISSN 1528-8919, Vol. 145, nr 2, artikkel-id 021007Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The integration of a heat pump (HP) with a combined cycle gas turbine (CCGT) to control the inlet air temperature is a promising technology to meet the requirements imposed by the current electricity systems in terms of efficiency and flexibility. If the HP is coupled with a thermal energy storage (TES) in an inlet conditioning unit (ICU), it can be exploited in different modes to enhance the off-design CCGT's efficiency or to boost the power output at full load. Furthermore, fuel-saving would be reflected in avoided emissions. The optimal sizing of the ICU, as well as an accurate estimation of the benefits, is a complex problem influenced by several factors such as the local climate and electricity market prices. This paper aims to systematically investigate, utilizing a mixed integer linear programming (MILP) model for optimal dispatch, the feasibility of an ICU integration in different scenarios (EU and US). Different electricity markets have been analyzed and classified according to the parameters describing the average and variability of prices, the interdependency with the gas market, the ambient temperature, or the local carbon pricing policy. The most favorable conditions are identified and the dependency of the optimal ICU sizing on the climate and the electricity market is highlighted. This paper provides information for a first viability assessment: the concept appears to be highly profitable in hot regions with high price variability. Additionally, even in less profitable conditions (i.e., stable low prices in a cold climate), the system increases operating hours and reduces economic losses.

sted, utgiver, år, opplag, sider
American Society of Mechanical Engineers (ASME) , 2023. Vol. 145, nr 2, artikkel-id 021007
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Identifikatorer
URN: urn:nbn:se:kth:diva-330104DOI: 10.1115/1.4056021ISI: 001029599000015Scopus ID: 2-s2.0-85144824008OAI: oai:DiVA.org:kth-330104DiVA, id: diva2:1774968
Merknad

Not duplicate with DiVA 1767342 which is a conference paper

QC 20230626

Tilgjengelig fra: 2023-06-26 Laget: 2023-06-26 Sist oppdatert: 2023-08-18bibliografisk kontrollert

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García, JoséGuédez, Rafael

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