Performance of a single-duct portable propane air conditioning system under different refrigerant charge levels

Tangalajuk Siang, Jeri and Sharifian, Ahmad (2017) Performance of a single-duct portable propane air conditioning system under different refrigerant charge levels. Heat Transfer - Asian Research, 46 (8). pp. 1246-1261. ISSN 1099-2871

Abstract

The effects of the refrigerant charge on the performance of a portable propane air conditioning system have been evaluated and compared to nonportable systems in which the surrounding temperatures of the evaporator and condenser are not equal. This study aims to determine the similarities and differences in the performance of the two types of propane air conditioners under different charge levels, and to serve as a source of reference for future designs of portable air conditioners. The refrigerant charge was changed from −12.3% to +30% of its normal charge at several room temperatures ranging from 20°C to 35°C. The performance parameters include the refrigerant temperature, mass flow rate, maximum velocity of refrigerant, maximum pressure, cooling capacity, compressor work, specific cooling capacity, and coefficient of performance of the system. It has been found that an increase in charge level was found to increase the cooling capacity, coefficient of performance, and maximum velocity of refrigerant in the system while decreasing specific cooling capacity. The increase in the charge caused a relatively insignificant rise in the maximum pressure of the system and useful work of the compressor.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Date Deposited: 05 Dec 2017 23:03
Last Modified: 11 Apr 2018 00:50
Uncontrolled Keywords: charge; performance; portable; air conditioning system
Fields of Research : 09 Engineering > 0913 Mechanical Engineering > 091305 Energy Generation, Conversion and Storage Engineering
09 Engineering > 0910 Manufacturing Engineering > 091006 Manufacturing Processes and Technologies (excl. Textiles)
09 Engineering > 0913 Mechanical Engineering > 091304 Dynamics, Vibration and Vibration Control
09 Engineering > 0999 Other Engineering > 099999 Engineering not elsewhere classified
Socio-Economic Objective: D Environment > 96 Environment > 9603 Climate and Climate Change > 960302 Climate Change Mitigation Strategies
D Environment > 96 Environment > 9601 Air Quality > 960199 Air Quality not elsewhere classified
D Environment > 96 Environment > 9601 Air Quality > 960106 Urban and Industrial Air Quality
E Expanding Knowledge > 97 Expanding Knowledge > 970110 Expanding Knowledge in Technology
D Environment > 96 Environment > 9699 Other Environment > 969999 Environment not elsewhere classified
D Environment > 96 Environment > 9610 Natural Hazards > 961010 Natural Hazards in Urban and Industrial Environments
Identification Number or DOI: 10.1002/htj.21271
URI: http://eprints.usq.edu.au/id/eprint/29557

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