Phase change material cool storage in a Swedish passive house

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Persson, JohannesKTH,Energiprocesser (författare)

Phase change material cool storage in a Swedish passive house

Artikel/kapitelEngelska2011

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Nis University,2011
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LIBRIS-ID:oai:DiVA.org:kth-165155
https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-165155URI

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Språk:engelska
Sammanfattning på:engelska

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QC 20150423
Passive Houses have gained popularity the last ten years as a way of improving the energy efficiency in the housing stock. During the cold winter in Sweden, external heating are at times needed but a Passive House is limited to a maximum use of 14 W/m2 or around 68 kWh/m2*year for external heating, depending on the heating strategy and the climate zone. The challenge of avoiding external heating during the cold winter climate in Sweden has pushed the design of a Passive House in a direction where problems with excessive temperatures might occur summertime. The aim of this paper is to evaluate a comfort cooling strategy for attaining good indoor climate summertime while maintaining good energy efficiency. The studied strategy is a night cool storage with phase change material. To evaluate this, a Matlab code was used for the analysis of climate files along with the thermodynamical properties of PCM-storages and then used with IDA Indoor Climate for building simulations. The building model is based on an actual Passive House in the district Lambohov in Linköping, Sweden, where continuous logging of temperatures are available. Without comfort cooling the simulations show excessive temperatures summertime which is consistent with the field measurements from the actual house. The results show that the phase change material can be a part of the solution and replace a substantial share of the external cooling when removing excessive temperatures but can not provide sufficient cooling during the hottest part of the summer simulated in this paper.

Ämnesord och genrebeteckningar

TEKNIK OCH TEKNOLOGIER Naturresursteknik Energisystem hsv//swe
ENGINEERING AND TECHNOLOGY Environmental Engineering Energy Systems hsv//eng
Building Simulation
Comfort cooling
Passive House
Phase Change Material

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Westermark, MatsKTH,Energiprocesser(Swepub:kth)u1aiy2p1 (författare)
KTHEnergiprocesser (creator_code:org_t)

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Ingår i:Proceedings of the 24th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2011: Nis University, s. 1884-18939788660550165

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TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Naturresurstekni ...; och Energisystem

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