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Hydrocarbons as refrigerants in small heat pump and refrigeration systems - A review
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Applied Thermodynamics and Refrigeration.ORCID iD: 0000-0002-9902-2087
2008 (English)In: International journal of refrigeration, ISSN 0140-7007, E-ISSN 1879-2081, Vol. 31, no 4, 552-563 p.Article, review/survey (Refereed) Published
Abstract [en]

Due to the concern for the effects of the release of HFC refrigerants on the global environment caused by the high global warming potential of these substances, there is a large interest in Europe and elsewhere for the use of hydrocarbons as refrigerants. This article presents a comparison of the properties and performance of hydrocarbons as refrigerants in small-size heat pump and refrigeration systems (< 20 kW cooling). A listing of several commercially available systems is also presented. The designs, safety precautions and performances of some of these systems are described. As a general conclusion, it is shown that using hydrocarbons will result in COPS equal to, or higher than, those of similar HFC systems. It is also shown that components suitable for hydrocarbon systems are available on the market, even though the number of large-size hermetic compressors is limited. A major concern, which should not be taken lightly, is the safety issue. Reduced charge through indirect systems and compact heat exchangers, outdoor placing of the unit, hydrocarbon sensors and alarms and forced ventilation are all steps which may be applied to reduce the risks under normal operation.

Place, publisher, year, edition, pages
2008. Vol. 31, no 4, 552-563 p.
Keyword [en]
refrigeration system, heat pump, survey, hydrocarbon, thermal property, compatibility, material, flammability, manufacturer
National Category
Mechanical Engineering
URN: urn:nbn:se:kth:diva-36412DOI: 10.1016/j.ijrefrig.2007.11.016ISI: 000257361700003ScopusID: 2-s2.0-44649165194OAI: diva2:430769
QC 20110712Available from: 2011-07-12 Created: 2011-07-12 Last updated: 2011-07-12Bibliographically approved

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Palm, Björn
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