A COMBI STORAGE FOR COMBINATION WITH HEAT PUMPS – FROM SIMULATIONS TO THE TEST BENCH RESULTS

Robert Haberl*, Jeremias Schmidli, Andreas Heinz, Joachim Kalkgruber, Michel Haller

*Corresponding author for this work

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

Abstract

n this work the development and testing of a combi storage tank for the combination with a heat pump is described.
The appropriate size and segmentation of the storage in different zones was determined with simulations in TRNSYS.
Installations in the storage tank for efficient handling of the high volume flow rates of a heat pump were designed and selected using CFD simulations. Finally, the finished storage tank was tested to determine its stratification
efficiency, demonstrating its good stratification properties. The storage tank performs very well with a stratification efficiency of 84 % at system level. The separation of the temperature ranges for hot water preparation in the storage
tank above and the space-heating zone remains intact even when charged with the high mass flow rate of 2570 kg/h.
As a result, the heat pump can be operated with a low supply temperature (the power weighted average supply temperature of the heat pump was 33 °C) and thus at a favorable operating point with high efficiency
Original languageEnglish
Title of host publicationProceedings of the ISES EuroSun 2020 Conference – 13th International Conference on Solar Energy for Buildings and Industry
EditorsAlexandros Charalambides, Wolfgang Streicher, Daniel Mugnier
Place of PublicationFreiburg
PublisherInternational Solar Energy Society
Pages740-749
ISBN (Electronic)978-3-9820408-2-0
DOIs
Publication statusPublished - 1 Sep 2020
EventEuroSun 2020: 13th International Conference on Solar Energy for Buildings and Industry - Virtuell, Greece
Duration: 1 Sep 20203 Sep 2020
https://pcoconvin.eventsair.com/eurosun20/

Conference

ConferenceEuroSun 2020
Country/TerritoryGreece
CityVirtuell
Period1/09/203/09/20
Internet address

Fields of Expertise

  • Sustainable Systems

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