Propane Heat Pump with Low Refrigerant Charge: Design and Laboratory Tests
2004 (English)In: International journal of refrigeration, ISSN 0140-7007, E-ISSN 1879-2081, Vol. 27, no 7, 761-773 p.Article in journal (Refereed) Published
Independently of the choice of refrigerant, environmental and or safety issues can be minimised by reducing the amount of refrigerant charge per heat pump or refrigeration system. In the investigation reported here, a laboratory test rig was built, simulating a water-to-water heat pump with a heating capacity of 5 kW. The system was designed to minimize the charge of refrigerant mainly by use of mini-channel aluminium heat exchangers. It was shown that the system could be run with 200 g of propane at typical Swedish operating conditions without reduction of the COP compared to a traditional design. Additional charge reduction is possible by selecting proper compressor lubrication oils or by using a compressor with less lubrication oil.
Place, publisher, year, edition, pages
2004. Vol. 27, no 7, 761-773 p.
heat pump; water-water; refrigerant charge; propane; design; experiment
IdentifiersURN: urn:nbn:se:kth:diva-6767DOI: 10.1016/j.ijrefreg.2004.06.012ISI: 000224937600008ScopusID: 2-s2.0-7044246309OAI: oai:DiVA.org:kth-6767DiVA: diva2:11569
QC 20100708 QC 20110915. 17th International Compressor Engineering Conference/10th International Refrigeration and Air Conditioning Conference. W Lafayette, IN. JUL 12-15, 2004 2007-02-142007-02-142011-10-18Bibliographically approved