Performance Evaluation of Refrigeration Units in Natural Gas Liquid Extraction Plant

Table 2

Process parameters of other auxilliary units.

Parameters	Unit	Condenser	Economizer	Expansion valve 1	Expansion valve 2	Refrigerant chiller
Suction pressure	bar	5.0	3.3	4.7	3.3	2.3
Discharge pressure	bar	4.7	—	3.3	1.9	1.9
Heat load	J/kg	−17,386.7	5733.78	—	—	17,036.04
Mass flow rate of vapor—economizer	kg/s	—	0.0034	—	—	—
Mass flow rate of liquid—economizer	kg/s	—	0.1305	—	—	—
Mass flow rate of cooling water—condenser	kg/s	6.72	—	—	—	—
Joule Thompson coefficient	—	—	—	8.57	12.86	—
Mole fraction of liquid remaining in chiller	—				0.035	0.00014
Mole fraction of vapor evaporated in chiller	—		0.025	0.025	—	0.045
Mass flow rate of liquid—condenser accumulator	kg/s	0.1339