Solar combisystems with forecast control to increase the solar fraction and lower the auxiliary energy cost

Publication: Research - peer-reviewArticle in proceedings – Annual report year: 2011

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Solar Combi systems still need quite a lot of auxiliary energy especially in small systems without seasonal storage possibilities. The control of the auxiliary energy input both in time and power is important to utilize as much as possible of the solar energy available from the collectors and also to use low backup energy prices during the day if electricity is used. The storage function and both stratified charging and extraction of heat, are very important, to separate different temperature zones in the storage. This paper describes a step towards forecast control for electricity based auxiliary energy sources. It can be either direct electric heating elements or a heat pump upgrading ambient energy in the air, ground, solar collector or waste heat from the house. The paper describes system modeling and simulation results. Advanced laboratory experiments are also starting now with three different combisystems, operating in parallel. These systems will be briefly described too.
Original languageEnglish
Title of host publicationISES Solar World Congress 2011 Proceedings
Publication date2011
ISBN (print)978-3-9814659-0-7
StatePublished

Conference

ConferenceISES Solar World Congress 2011
CountryGermany
CityKassel
Period28/08/1102/09/11
Internet addresshttp://www.swc2011.org/cms/
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