In this paper, an energy-efficient air source gas engine-driven heat pump (GHP) experimental platform was built innovatively based on the use of scroll compressors with R410A. The cooling performance characteristics of the GHP system were investigated. The changes of cooling capacity (Qc), gas consumption power (Pgas), compressor power (Pcomp), primary energy ratio (RPER), total primary energy ratio (RPER,all) and coefficient of performance (RCOP) were obtained under the conditions of a wide range of water inlet temperatures tw,in (8.8-18.8 ℃), engine speeds Neng (1400-2400 r/min), ambient air temperatures Tamb (24-43 ℃) and water inlet flow rates Gw (9.16-18.32 m3/h). The results show that RPER is affected by both RCOP and engine thermal efficiency ηeng. In cooling operation, RPER, RPER,all and ηeng are between 0.935-1.224, 1.388-1.720 and 27.56%-35.25%, respectively. According to the uncertainty analysis, the maximum relative uncertainties of Qc, Pgas and RPER are 5.61%, 1.00% and 5.70% respectively, indicating that the test results are stable and reliable.
Key words
cooling /
heat recovery /
coefficient of performance /
primary energy ratio /
gas engine-driven heat pump /
distributed energy resources
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