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Exergy, Performance And Environmental Impact Analysis Of Compression Refrigeration Systems

Adelekan, D.S and Ohunakin, O.S. and Odunfa, K. M. and Babarinde, T.O. (2014) Exergy, Performance And Environmental Impact Analysis Of Compression Refrigeration Systems. In: International Conference of Mechanical Engineering, Energy Technology and Management IMEETMCon 2014.

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Abstract

Major concern in refrigeration hinges largely on energy conservation, environmental safety and efficient cooling system. The concept of quality of useful energy which invariably leads to energy conservation is naturally related to exergy. This study therefore experimentally conducts exergy, performance and environmental impact analysis of compression refrigeration systems using R134a, R410a and R407c, refrigerants. The experiment was performed using a modified exiting R134a refrigerating system. The refrigerator was built with Scroll compressor, 48m3 evaporator space, 1m throttle length and 0.2mm array of rods in the condensing unit coupled with thermocouple K attached at the various components and a digital 10^-3 accuracy weighing scale for charging refrigerant in the required grams. The results show that for 100 grams charge of the refrigerants, the exergetic efficiency, coefficient of performance (COP) and the degree of environmentally friendliness of each of the refrigerants are of order R410a > R407c,> R134a and for 80 grams charge of the refrigerants, the order of performance is R410a > R134a> R407c. While for 60 grams charge of the refrigerants, the exergetic efficiency, coefficient of performance and the degree of environmentally friendliness of each of the refrigerants are of order R407c> R410a > R134a, that of 40 grams charge of the refrigerants is of order R134a> R407c> R410a. The study therefore established that irrespective of the grams charge values of the investigated refrigerants used, R410a is the best, closely followed by R134a and lastly R407c.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Exergetic efficiency, Coefficient of performance (COP), Impact analysis, Refrigeration, Environmental
Subjects: T Technology > T Technology (General)
T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User: Mrs Hannah Akinwumi
Date Deposited: 30 Jul 2015 10:10
Last Modified: 30 Jul 2015 10:10
URI: http://eprints.covenantuniversity.edu.ng/id/eprint/5380

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