Effect of Condenser Fouling on Performance of Vapor Compression Refrigeration System

Table 5

Comparison of results for R1234yf and R1234ze with R134a at °C.

Refrigerant	Change in (%)	Change in (%)	Change in COP (%)	Change in (%)
R1234yf	10	0.57	−2.01	−1.46
	50	7.48	−19.29	−13.25
R1234ze	10	0.70	−1.59	−0.91
	50	6.83	−14.47	−8.63
R134a	10	0.71	−1.61	−0.91
	50	6.69	−14.49	−8.77