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Results of an experimental study of an advanced jet-pump refrigerator operating with R245fa
Authors:Ian W Eames  Ali E Ablwaifa  Volodymyr Petrenko  
Affiliation:aDepartment of Engineering System, South Bank University, 103 Borough Road, London, SE1 0AA, United Kingdom;bSchool of the Built Environment, University of Nottingham, University Park, Nottingham, NG7 2RD, United Kingdom;cOdessa State Academy of Refrigeration 1/3, Dvoryanskaya Street, 65026 Odessa, Ukraine
Abstract:An experimental jet-pump refrigeration system was designed and constructed to assess the performance of R245fa (1,1,1,3,3-pentafluoropropane) as a suitable refrigerant. The paper describes and evaluates the results of experimental tests over a range of operating conditions. In addition, the effects of primary nozzle geometry on jet-pump performance are reported. Performance maps, useful for practical design and control are also provided. Experimental values of coefficient of performance (COP) between 0.25 and 0.7 were obtained. These results demonstrate that low-grade heat can be used to drive efficient jet-pump refrigeration systems, using R245fa as their working fluid, for high temperature applications, such air conditioning.
Keywords:Jet-pump  Ejector  Refrigerator  Refrigeration system  R245fa  Experimental data
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