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Techno-economic analysis of a novel solar thermal and air-source heat pump system
Högskolan Dalarna, Akademin Industri och samhälle, Energiteknik.ORCID-id: 0000-0002-3201-8518
Högskolan Dalarna, Akademin Industri och samhälle, Energiteknik.
2016 (engelsk)Konferansepaper, Oral presentation with published abstract (Annet (populærvitenskap, debatt, mm))
Abstract [en]

This paper presents a techno-economic analysis of a novel solar thermal and air source heat pump system. The system was designed for relatively high operating temperatures in the space heating circuit and included the use of a heat pump with vapor injection cycle and vacuum insulation on the storage tank. The system model was validated against measurements in laboratory and simulated in TRNSYS 17. Annual simulations were performed for the combination of two climates (Carcassonne and Zurich) and two house standards (SFH45 and SFH100) and the best results were achieved for the boundary conditions the system was designed for. For those conditions (Zurich and SFH100), the novel system showed potential for being cost-effective compared to state of art solar and heat pump system. The “additional investment limit”, i.e. the maximum extra investment cost for the novel system in comparison to a state of art benchmark system that gives a break even result for a period of 10 years, varied between 827 € and 2482 € depending on electricity price. The results of a sensitivity analysis showed that variations in electricity price affected the additional investment limit far more than the other economic parameters

sted, utgiver, år, opplag, sider
2016.
Emneord [en]
solar thermal, heat pump, vapour injection
HSV kategori
Forskningsprogram
Energi, skog och byggd miljö
Identifikatorer
URN: urn:nbn:se:du-22548OAI: oai:DiVA.org:du-22548DiVA, id: diva2:945381
Konferanse
16th International Refrigeration and Air Conditioning Conference, 11-14 July 2016, West Lafayette, USA
Forskningsfinansiär
EU, FP7, Seventh Framework ProgrammeTilgjengelig fra: 2016-07-01 Laget: 2016-07-01 Sist oppdatert: 2017-11-06bibliografisk kontrollert
Inngår i avhandling
1. Solar heat pump systems for heating applications: Analysis of system performance and possible solutions for improving system performance
Åpne denne publikasjonen i ny fane eller vindu >>Solar heat pump systems for heating applications: Analysis of system performance and possible solutions for improving system performance
2017 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
Abstract [en]

Solar heat pump systems (SHPs) are systems that combine solar energy and heat pumps. SHPs have been investigated for several decades and have been proven to increase the share of renewable energy and reduce electric energy demand in residential heating applications. Many solar thermal heat pump systems have become market-available in recent years; however these systems are still not widely employed in the residential sector. This is due mainly to the high initial costs (investment and installation costs) of solar thermal heat pump systems, which limits their cost-effectiveness. Enhancing cost-effectiveness of solar thermal heat pump systems is necessary for a more effective and broader market penetration.

In this thesis, solar thermal and photovoltaic systems combined with heat pumps for heating applications are treated. The overall aims of the thesis are to: 1) investigate techno-economics of SHPs and 2) investigate possible solutions for improving system performance of a reference solar thermal and heat pump system for residential heating applications.

In the first part of the thesis, the influence of climatic boundary conditions on economic performance of SHPs has been investigated by means of: a) an economic comparison of SHPs found in the relevant literature and b) system simulations of the reference solar thermal heat pump system.

In the second part of the thesis, potential solutions for improving system performance of the reference solar thermal heat pump system with limited change in system’ costs are investigated. A systematic approach was used for investigating cost-effectiveness of the system improvements in the reference system.

Based on results of the cost-effectiveness analysis, some of the investigated system improvements were chosen for being included in the design of a novel solar thermal and air source heat pump system concept. The novel system was designed for a house standard with relatively high operating temperatures (55°C/45°C) in the space heating distribution system and for high space heating demand (123 kWh/m2·year). Finally, the thesis ends with a cost-effectiveness analysis of the novel system.

sted, utgiver, år, opplag, sider
Stockholm: KTH Royal Institute of Technology, 2017
HSV kategori
Forskningsprogram
Energi, skog och byggd miljö, MacSheep
Identifikatorer
urn:nbn:se:du-26498 (URN)978-91-7729-526-6 (ISBN)
Disputas
2017-10-09, 14:26
Opponent
Veileder
Tilgjengelig fra: 2017-11-06 Laget: 2017-11-06 Sist oppdatert: 2017-11-06bibliografisk kontrollert

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