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Oct 22, 2024The main purpose of this study was to investigate the possibilities of using R134a as a working fluid to replace R22 for vapor compression heat pumps.
Oct 20, 2024Many researchers have investigated the performance variations of heat pump systems, focusing on only one effect of change in either charge amount or composition ...
May 10, 2024This study investigates six composition determination methods, which are all non-invasive, five of which can be conducted during system operation.
Oct 12, 2024The study investigated the characteristics of different natural refrigerants and their mixtures in a residential heat pump with low refrigerant charge. Three ...
Missing: impact | Show results with:impact
Feb 10, 2024Refrigerant R22 has approximately 55% higher refrigerating capacity and pressure levels in compari- son to R12. The significantly higher dis- charge gas ...
Jun 5, 2024When the cooling mode changes from refrigerant cooling to liquid cooling under 2C charging, the heat transfer coefficient reduces about 73.6%, and the battery ...
Mar 1, 2024The results indicated that the heating capacity of R1234yf systems with IHX averaged a 13.9% decrease compared with R134a systems, but the COP of the system ...
Jun 5, 2024The choice of refrigerant directly affects cooling performance, and research on vehicle air conditioning (AC) systems can indirectly guide the BTM. R1234yf and ...
Mar 18, 2024The purpose of this study is to examine the performance of R134a and three different combinations in which it is mixed with R32 at a 5% (in mass fractions) ...
Jul 15, 2024Experimental Assessment of the Effect of Refrigerant Charge Levels on Variable-Speed Heat Pump Performances. Philani Gift Hlanze1, Jie Cai1, Donghun Kim2. 1 ...