Performance analysis of new alternatives to HCFC-22 inside air/refrigerant-enhanced surface tubing

Abstract:

In this paper, the test results of a performance analysis of new alternatives; R-410A, R-507, R-407C, R-408A and R-404A proposed as substitutes to HCFC-22 are presented. The test results were obtained using an air-source heat pump with enhanced surface tubing. Performance tests were conducted according to the ARI/ASHRAE Standards. The performance data demonstrated that as an interim replacement, the R-404A blend has a superior performance particularly at low temperatures among the proposed blends. Furthermore, the alternatives to R-22 are characterised by high discharge pressure compared to that of R-22. In particular, R-410A has the highest discharge pressure among the blend studied. R-407C has similar discharge temperature to R-22 at temperatures lower than -8°C. Copyright (C) 2000 John Wiley and Sons, Ltd.

Año de publicación:

2000

Keywords:

• alternatives
• Enhanced surface tubing
• R-22
• performance

Fuente:

scopus