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Thermodynamic Analysis and Comparison of CO2/Propane and C02/Isobutane Cascade Refrigeration System

Sulaiman, Nor Hidayatul Solehah (2011) Thermodynamic Analysis and Comparison of CO2/Propane and C02/Isobutane Cascade Refrigeration System. Universiti Teknologi Petronas. (Unpublished)

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Abstract

This study thermodynamically analyzes a cascade refrigeration system that uses carbon dioxide and propane (R744-R290) or carbon dioxide and isobutane (R744-R600a) as an alternative to ammonia-carbon dioxide system (R717-R744). Parametric study will be used to determine the optimal condensing temperature of the cascade-condens~ to maximize the COP given specific parameters for food processing application under fixed cooling capacity and condensing temperature. The parameters that have been varied are the evaporating temperature for low temperature circuit, the cascade condenser temperature <lifference, the low temperature circuit condensing temperatllre and degree of subcooling and superheating. The results show that COP increases with evaporating temperature (The), b11t <lecreases as temp~atllre difference in cascade condenser ( L1 Teas) increases. Moreover, an increase of superheat reduced the COP of the system while increase of subcooling increased the COP of the system.

Item Type: Final Year Project
Academic Subject : Academic Department - Mechanical Engineering - Energy - Refrigeration - Absorption
Subject: T Technology > TJ Mechanical engineering and machinery
Divisions: Engineering > Mechanical
Depositing User: Users 2053 not found.
Date Deposited: 09 Oct 2013 11:07
Last Modified: 25 Jan 2017 09:42
URI: http://utpedia.utp.edu.my/id/eprint/8767

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