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Analytical Study of Cooling Performance Comparison in a Refrigerator Truck Using R404A and R744  

Myung, Chi-Wook (Department of Mechanical Engineering, Graduate School of Chosun University)
Kim, Sang-Hun (Department of Mechanical Engineering, Graduate School of Chosun University)
Cho, Hong-Hyun (Department of Mechanical Engineering, Chosun University)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.19, no.6, 2011 , pp. 119-125 More about this Journal
Abstract
The analysis of performance characteristics in a refrigerator truck using R404A and R744 was carried out by using theoretical method, and each performance was compared with a variation of operating conditions. The components and cycle simulation model were developed by using EES program. To investigate the performance characteristics with operating conditions, the performance of both systems was simulated according to indoor temperature, outdoor temperature, outdoor air velocity and compressor speed. As a result, the R744 system had a better COP than R404A system for given operating condition. The cooling capacity was not increased over the outdoor air velocity of 3 m/s. Besides, the performance of R404A system was more sensitive to operating conditions compared to that of R744 system.
Keywords
R404A; R744; Refrigerator truck; COP;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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