Reduction of the amount of flammable refrigerant in a small-capacity domestic heat pumps
2002 (English)In: Proceedings of Contemporary problems of refrigerating engineering and refrigerating technology conference, Odessa, Ukraine, 2002, 2002Conference paper (Other academic)
This paper presents an experimental and theoretical investigation of the charge distribution, possibilities to reduce the total amount of refrigerant, the void fraction, and pressure drop in a heat pump system and its components. The research is a part of a project that has as a goal the development of an efficient domestic heat pump system that would cover a big part of the energy needs (about 5 kW) of an average single-family house, while safety is carefully considered by keeping the refrigerant charge under 150 grams.
For this purpose, a test unit was built and propane was chosen as the working fluid. Rectangular Copper Micro Channel (RCMC) heat exchangers with smaller internal volume were used. A theoretical model of the charge distribution in the heat exchangers was developed and theoretical results were compared to the experimental values.
Place, publisher, year, edition, pages
rduction of charge, refrigerant, propane, heat pump
IdentifiersURN: urn:nbn:se:kth:diva-76539OAI: oai:DiVA.org:kth-76539DiVA: diva2:491034
Contemporary problems of refrigerating engineering and refrigerating technologyconference, Odessa, Ukraine
Qc 201202282012-02-282012-02-062014-09-22Bibliographically approved