NDLI: Development and Analysis of a Multi-evaporator Cooling System with Electronic Expansion Valves

Content Provider	Springer Nature Link
Author	Ataş, Şafak Aktaş, Mustafa Ceylan, İlhan Doğan, Hikmet
Copyright Year	2017
Abstract	In this study, a vapor compression cooling system with three evaporators and electronic expansion valves was designed, manufactured and tested experimentally. Compressor of this system was converted to be inverter driven which enabled it to run at variable speeds. Temperature values of cold rooms were controlled more sensitive by using electronic expansion valves. Energy analysis was done by comparing the operating parameters of the system with constant and variable speeds. Programmable logic control (PLC) and cold room controls were used to control the system. The PLC device provided the variable operation of the system by determining the required operation frequency of the compressor according to the changes at the suction line. Using this program, the desired values are set on the PLC screen and the multi-evaporator cooling system was tested at various conditions. The desired conditions are determined for the system at 0, $$+5$$ and $$-5\,^{\circ }\hbox {C}$$ temperatures. Calculations on the experimental results revealed that the cooling coefficient of performance is 1.86 for the constant frequency operation and 2.22 for the variable frequency operation. Besides, it was determined experimentally that the system running on variable frequency consumed 20% less electrical energy than the constant frequency system.
Starting Page	4513
Ending Page	4521
Page Count	9
File Format	PDF
ISSN	2193567X
Journal	Arabian Journal for Science and Engineering
Volume Number	42
Issue Number	11
e-ISSN	21914281
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2017-04-21
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Variable compressor speed Multi-evaporator Electronic expansion valve Superheat Engineering Science, Humanities and Social Sciences, multidisciplinary
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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