Impacts of room temperature on the performance of a portable propane air conditioner

Sharifian, Ahmad and Tangalajuk Siang, Jeri (2015) Impacts of room temperature on the performance of a portable propane air conditioner. International Journal of Air-Conditioning and Refrigeration, 23 (2). pp. 1550015-1. ISSN 2010-1325

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Abstract

The performance of a portable propane air conditioner system, in which the temperatures of the air passing over the condenser and evaporator are equal, has been experimentally investigated under different room temperatures and refrigerant charge levels. The research has been carried out in a range of room temperatures from 20°C to 35°C and in undercharge, standard charge and overcharge conditions. The results show that, at higher room temperatures, the refrigerant temperature in all parts of the system, the density of the refrigerant at the inlet and outlet of the condenser, mass of the refrigerant in the compressor, the mass flow rate of the refrigerant and the cooling capacity of the system in either the undercharge or full charge condition, the specific cooling capacity of the undercharge system, the useful work of the compressor, and the maximum pressure of the refrigerant increase. The increase in room temperature decreases the density of the refrigerant at the inlet and outlet of the capillary tube, the mass of the refrigerant in the capillary tube, the refrigerant subcooling at the inlet of the capillary tube, the maximum velocity of the refrigerant and the coefficient of performance. In addition, the increase in room temperature at overcharge condition causes an increase in the mass flow rate, cooling capacity and specific cooling capacity to a maximum value followed by their decrease. The most important difference between a portable air-conditioner and a non-portable system is the increase in cooling capacity with an increase in room temperature in full charge condition.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Accepted Version deposited in accordance with the copyright policy of the publisher.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Date Deposited: 20 Oct 2015 04:14
Last Modified: 05 Dec 2017 05:21
Uncontrolled Keywords: room temperature; performance; portable
Fields of Research : 09 Engineering > 0913 Mechanical Engineering > 091399 Mechanical Engineering not elsewhere classified
09 Engineering > 0915 Interdisciplinary Engineering > 091505 Heat and Mass Transfer Operations
09 Engineering > 0915 Interdisciplinary Engineering > 091504 Fluidisation and Fluid Mechanics
10 Technology > 1099 Other Technology > 109999 Technology not elsewhere classified
09 Engineering > 0910 Manufacturing Engineering > 091010 Packaging, Storage and Transportation (excl. Food and Agricultural Products)
Identification Number or DOI: 10.1142/S2010132515500157
URI: http://eprints.usq.edu.au/id/eprint/26988

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