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Abstract:
In this paper, an integrated gas-injected scroll compressor heat pump system using R1234yf, R32 and its binary mixtures as working fluid was developed and their heating performances under low ambient temperature were quantitatively evaluated. A composite test system consisting of second-refrigerant calorimeter and water-cooled condenser was used to test the system working performance. The condensing temperature, evaporating temperature, compressor power input and other variables were analyzed to evaluate the system heating capability and energy efficiency. Test results showed that the R1234yf system can run at an evaporating temperature of -25 degrees C. R1234yf/R32 mixture can run at an evaporating temperature of -20 degrees C and it has the highest heating COP value among other refrigerants; R1234yf/R32 gas injection system provided very significant performance improvements for heating performance, compared with no gas injection, the heating capacity and heating COP can improve 16%similar to 20% and 13%similar to 16%, respectively. (C) 2017 Elsevier Ltd and IIR. All rights reserved.
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INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID
ISSN: 0140-7007
Year: 2017
Volume: 75
Page: 286-292
3 . 9 0 0
JCR@2022
ESI Discipline: ENGINEERING;
ESI HC Threshold:165
CAS Journal Grade:2
Cited Count:
WoS CC Cited Count: 41
SCOPUS Cited Count: 42
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 0
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