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Oct 22, 2024 , The 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, 2024 , Many 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, 2024 , This study investigates six composition determination methods, which are all non-invasive, five of which can be conducted during system operation.
Oct 12, 2024 , The 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, 2024 , Refrigerant R22 has approximately 55% higher refrigerating capacity and pressure levels in compari- son to R12. The significantly higher dis- charge gas ...
Jun 5, 2024 , When 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, 2024 , The 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, 2024 , The choice of refrigerant directly affects cooling performance, and research on vehicle air conditioning (AC) systems can indirectly guide the BTM. R1234yf and ...
Mar 18, 2024 , The 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, 2024 , Experimental Assessment of the Effect of Refrigerant Charge Levels on Variable-Speed Heat Pump Performances. Philani Gift Hlanze1, Jie Cai1, Donghun Kim2. 1 ...