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Investigation on the Performance of Special Purpose Automotive Air-Conditioning System Using Dual Refrigeration Cycle
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 Title & Authors
Investigation on the Performance of Special Purpose Automotive Air-Conditioning System Using Dual Refrigeration Cycle
Seo, Jae-Hyeong; Bang, You-Ma; Lee, Moo-Yeon;
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 Abstract
The objective of this study is to investigate the cooling performance of an air-conditioning system for a special purpose vehicle under tropical and severe weather conditions. In order to evaluate and compare the cooling performances, the dual refrigeration cycle using R-134a was tested on a special purpose vehicle with various refrigerant charge amounts and indoor temperatures. The cycle was tested considering indoor cooling speed and compression ratio (discharge pressure), and was optimized at the refrigerant charge amount of 1.5 kg and outdoor temperature of . The time to reach indoor temperature of increased by 86.5% and 38.1%, at the indoor temperatures from to and from to , respectively. In addition, with the increase in indoor temperature from to , the cooling capacity increased by 7.3%, from 19.1 kW to 20.5 kW, but decreased by 7.0% from 4.67 to 5.1.
 Keywords
Cooling Capacity;COP;Refrigerant;R-134a;Vapor Compression Cycle;
 Language
Korean
 Cited by
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