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Design and Test of a Domestic Heat Pump with Ammonia as Refrigerant
KTH, Skolan för industriell teknik och management (ITM), Energiteknik, Tillämpad termodynamik och kylteknik.ORCID-id: 0000-0001-9592-0202
KTH, Skolan för industriell teknik och management (ITM), Energiteknik, Tillämpad termodynamik och kylteknik.ORCID-id: 0000-0002-9902-2087
2011 (Engelska)Ingår i: 4th IIR Conference: Ammonia Refrigeration Technology, France: International Institute of Refrigeration, 2011Konferensbidrag, Publicerat paper (Övrigt vetenskapligt)
Abstract [en]

Among alternative refrigerants, ammonia with zero Ozone Depleting Potential (ODP) and Global Warming Potential (GWP), and favorable thermodynamic properties is a sensible choice as a replacement for the synthetic refrigerants, which are powerful greenhouse gases.

In this paper, the results of experiments done on a new ammonia water-to-water heat pump prototype at different evaporation temperatures and compressor speeds are reported. The heat pump is designed to deliver 7 kW heat at evaporation temperature of -5°C and condensation temperature of 40°C. The hot discharge gas from compressor is utilized to provide sanitary hot water, and the rest of the heat is used for preheating the tap water and space heating of a single-family house. The compact design of the heat pump helps reducing the refrigerant charge. To reduce the charge further and to prevent oil accumulation at the bottom of evaporator, a minichannel aluminum heat exchanger is used as evaporator.

Ort, förlag, år, upplaga, sidor
France: International Institute of Refrigeration, 2011.
Nyckelord [en]
ammonia, heat pump, COP, performance, minichannel heat exchanger, tap water heating, domestic hot water
Nationell ämneskategori
Energiteknik
Identifikatorer
URN: urn:nbn:se:kth:diva-76029OAI: oai:DiVA.org:kth-76029DiVA, id: diva2:490666
Konferens
4th IIR Conference: Ammonia Refrigeration Technology, Ohrid, Macedonia, April 14-16, 2011
Anmärkning

QC 20120413

Tillgänglig från: 2012-02-06 Skapad: 2012-02-06 Senast uppdaterad: 2017-05-15Bibliografiskt granskad

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Monfared, BehzadPalm, Björn

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