Table 11. Error analysis of the considered methodologies with ZR compressor.

		R407C			R450A
		Method 1	Method 2	Method 3	Method 1	Method 2	Method 3
Relative average error	Discharge temperature (°C)	1.07	1.36	1.37	0.62	0.60	1.75
	Electric power (%)	0.95	2.41	2.40	1.83	3.02	3.01
	Mass flow rate (%)	0.97	0.69	2.09	2.49	0.96	1.14
	Isentropic efficiency (%)	1.29	2.49	2.43	3.47	2.88	3.58
Standard deviation	Discharge temperature (°C)	0.69	1.98	1.79	0.74	0.71	0.93
	Electric power (kW)	0.02	0.05	0.05	0.02	0.02	0.02
	Mass flow rate (kg/s)	0.00066	0.00043	0.00058	0.00034	0.00051	0.00044
	Isentropic efficiency (-)	0.0045	0.0169	0.0183	0.0139	0.0125	0.0126