Experimental Investigation of Single Evaporator Cooling System Using Two Capillary Tubesand Microchannel Coil Technology

In this article, we will deal with the experimentalinvestigation of the vapor compressionrefrigeration system (VCRs) in which two capillarytubes with different dimensions are used. We willalso compare the performance of the new singleevaporator system with two capillary tubes with thesingle evaporator system with one capillary tube.The single evaporator refrigeration system withtwo capillary tubes increases energy efficiency.The equipment used in the VCRs is a variablespeed compressor, microchannel condenser (MCC),dryer, ۳-way valve, and freezer compartmentevaporator (FCE). In this model, the evaporator isnot used in the fresh food compartment (FFC) ofthe refrigerator-freezer, and the cold enters thefresh food compartment through an open/ closeddamper. R ۶۰۰a refrigerant is used in thecondensation refrigeration system. The VCRs isplaced on the side-by-side refrigerator-freezer. Therefrigerator-freezer has been tested and checked ina laboratory with an ambient temperature of ۲۵ °C,according to national and international standards(IEC ۶۲۵۵۲ & amp; INSO ۱۴۵۷۷-۱st edition). Theinnovation of the current system is the use of twocapillary tubes at the evaporator inlet and MC-Ctechnology. If the current system is used, theenergy efficiency index will decrease by ۳۶%. Theenergy index is less than ۲۲, and (refrigeratorvolume: ۵۱۴ liters and freezer volume: ۲۹۲ liters)energy consumption efficiency group will be A+ + +.

Keywords:

VCRs , Capillary tube , MC-C , Energyconsumption