Performance Evaluation of Refrigeration Units in Natural Gas Liquid Extraction Plant

Table 1

Summary of two-stage compression refrigeration.

Parameters	Units	1st stage compressor	2nd stage compressor
Suction pressure	bar	1.9	2.5
Discharge pressure	bar	2.5	5.0
Compression ratio	—	1.316	1.414
Isentropic work of compression	J/kg	20,644.25	22,094.91
Actual work of compression	J/kg	20,644.25	21,872.85
Isentropic efficiency	%	48.56	51.98
Mechanical efficiency	%	20.71	46.51
Volumetric efficiency	%	55.0	46.7
Actual power requirement	KW	0.0969	0.0960
Cooling water consumption in intercoolers	m^3/s	7.2612	19.282
Compressor capacity	m^3/s	2.1566	2.1096
Work input in comp 1 and comp 2	J/kg	273.14	273.14
Work output	J/kg	1197.89	2414.11