producing refrigeration in a refrigeration system designed for R-134a including the step of drop-in substituting for the R- 134a mixtures of R-152a, R-134a and R-125 to produce greatly improved performance in air conditioning systems designed to use only R-134a as the sole refrigerant fluid....
Selladurai, Experimental analysis of a new refrigerant mixture as drop- in replacement for CFC12 and HFC134a, International Journal of Thermal Sciences 47 (2008) 1490-1495.Mani K, Selladurai V. Experimental analysis of a new refrigerant mixture as a drop in replacement for CFC 12 and HFC...
Drop-in tests were conducted using R290/R32 (31:69) mixture in an ice-cream maker for possible replacement of R-502 and R-404A. Optimum refrigerant charge and TEV opening were obtained through a series of experiments. At the standard outdoor condition (35℃ DT, 24℃ WT), the time requ...
Frictional pressure drop in oil-rich R12-SUNISO 1GS refrigerant–oil two-phase flows with volatile outgassing has been investigated theoretically. The following conclusions can be drawn from this analysis: 1. Two-phase multiplier correlations based on a variety of experimental conditions including oil...
Reliable and comprehensive predictive tools for the frictional pressure drop (FPD) are of particular importance for systems involving two-phase flow condensation. However, the available models are only applicable to specific operating conditions and chan
Reliable and comprehensive predictive tools for the frictional pressure drop (FPD) are of particular importance for systems involving two-phase flow condensation. However, the available models are only applicable to specific operating conditions and chan
72 inch AC Charging Hose HVAC Refrigerant R12 R22 R404 R502 R134A Car Air Conditioning Refrigeration Tube 3000-600 A20USD 21.85-33.96/piece 13 To Towing Solutions To 7 Pin Trailer Adapter Pin Adapter Towing Solutions To 7 Pin Trailer Adapter Pin To TowingUSD 2.73/piece ...
Springer for Research & Development Alternative RefrigerantCapillary TubeMass Flow RatePressure DropR22The objective of this study is to present flow and pressure drop characteristics of R22 in adiabatic capillary tubes of inner diameters of 1.2 to 2.0 mm, and tube lengths of 500 to 2000 mm. ...
收稿日期: 2012-12-06 修稿日期: 2013-05-08 文章编号: 1005-0329(2013)07-0066-06 R290水平管内凝结换热和压降的研究现状 宁静红,刘敬坤 (天津商业大学天津市制冷技术重点实验室,天津300134) 摘要: 通过分析国外对R290水平光滑管内和强化管内的流动凝结换热的研究,得出R290管内换热系数较常规工 质高,而强化...
The behaviour of frictional pressure gradient for horizontal flows of refrigerant 12 (R12) within a cirucular smooth tube (12 mm ID) is investigated. The range of parameter studies covers the flow structures with stratification, which provide a useful insight in the design of direct expansion ...