Energy & economic assessment of façade-integrated solar thermal systems combined with ultra-low temperature district-heating
Loading...
Identifiers
Publication date
2020-10
Authors
Advisors
Journal Title
Journal ISSN
Volume Title
Publisher
Citations
Export
Abstract
This paper conducts an energy and economic assessment of District Heating (DH) integrated Solar Thermal (ST) systems. An implementation with building-integrated ST collectors coupled to a Low Temperature District Heating (LTDH) system is studied, with special focus on unglazed collectors. ST heat is exploited in the building through direct use, while excess heat is delivered to the network. A novel control strategy for heat flows in the system is proposed. A meta-analysis of several DH configurations, interconnection schemes and installed ST capacity is performed in three different climates: Sevilla (Spain), Bordeaux (France) & Copenhagen (Denmark). Heat loads corresponding to buildings with various insulation levels and domestic hot water loads are assessed in hourly simulations. The proposed interconnection concept provides a variety of connection modes to the DH network, allowing up to a 50% increase in the provision of solar heat compared to an isolated ST system. Positive Return of Investment (ROI) for such a setup is achieved in 22% of the studied cases. The DH network is found to be a suitable heat sink in up to 25% of the buildings with ST systems installed.
Description
Publisher Copyright: © 2020 The Authors
Keywords
Solar district heating , Renewable energy sources , Building integrated solar thermal , 4th generation district-heating , Smart energy systems , Solar district heating , Renewable energy sources , Building integrated solar thermal , 4th generation district-heating , Smart energy systems , Renewable Energy, Sustainability and the Environment , SDG 7 - Affordable and Clean Energy , Project ID , info:eu-repo/grantAgreement/EC/H2020/768567/EU/REnewable Low TEmperature District/RELaTED , info:eu-repo/grantAgreement/EC/H2020/768567/EU/REnewable Low TEmperature District/RELaTED , Funding Info , This project has received funding from the European Union’sHorizon 2020 research and innovation programme under grantagreement No 768567 , This project has received funding from the European Union’sHorizon 2020 research and innovation programme under grantagreement No 768567
Type
Citation
Lumbreras , M & Garay , R 2020 , ' Energy & economic assessment of façade-integrated solar thermal systems combined with ultra-low temperature district-heating ' , Renewable Energy , vol. 159 , pp. 1000-1014 . https://doi.org/10.1016/j.renene.2020.06.019