Design and optimization of a De-centralized community sized solar heating system for Nordic Region

Hassam ur Rehman, Janne Hirvonen, Kai Sirén

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review


There is a need to accelerate the application of advanced clean energy technologies to resolve the challenges of climate change. Solar heating is a feasible solution among clean energy technologies. These technologies are not yet highly used in high latitudes due to various challenges. This paper focuses on the community sized solar district heating system configuration for cold climates. The proposed configuration consists of a partially decentralized heating system. Each individual house heat pump was connected between large centralized solar-charged low temperature tank and smaller de-centralized individual high temperature tank in each house. Additionally, the large centralized tank was directly charged by solar-charged borehole storage during winters. Dynamic simulation approach was used through TRNSYS software coupled with MOBO (multi-objective building optimizer) for NSGA-II optimization algorithm. The purchased electricity and investments were two objectives minimized. The impact of the energy system on the renewable energy fraction, purchased electricity and investments as a function of the building heating demand, collectors and photovoltaic areas, short-term tanks storages and boreholes volumes were evaluated. Results showed that purchased electricity varied 47 kWh/m 2/yr-25 kWh/m 2/yr and renewable energy fraction 75%-91%.

Original languageEnglish
Title of host publicationISES Solar World Congress 2017 - IEA SHC International Conference on Solar Heating and Cooling for Buildings and Industry 2017, Proceedings
EditorsDavid Renne, Steven Griffiths, Manuel Romero, Ken Guthrie, Daniel Mugnier
PublisherInternational Solar Energy Society (ISES)
Number of pages11
ISBN (Electronic)978-3-9814659-7-6
Publication statusPublished - 1 Jan 2017
MoE publication typeA4 Article in a conference publication
EventISES Solar World Congress 2017 - Abu Dhabi, United Arab Emirates
Duration: 29 Oct 20172 Nov 2017


ConferenceISES Solar World Congress 2017
Abbreviated titleSWC 2017
Country/TerritoryUnited Arab Emirates
CityAbu Dhabi


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