Affiliation:
1. School of Energy & Environment, Zhongyuan University of Technology, Zhengzhou, China
2. Zhengzhou Vocational University of Information and Technology, Zhengzhou, China
Abstract
A refrigerated system experimental bench using R404A as the refrigerant was
built to address the current issues of high compressor discharge temperature
and poor refrigeration performance of refrigerated systems for cold storage.
The effects of compressor speed and temperature changes within the storage
on the main refrigeration performance parameters of the system were studied
and analyzed. The results show that when the rotational speed is increased
from 2500-4500 rpm under the conditions of 32?C outside and 0?C inside,
the highest system exhaust temperature is 84.3?C, which is lower than 90?C, and the maximum system COP is 3.86, and when the compressor speed is
increased from 3500 rpm under the conditions of -5?C to 5?C, the system
exhaust temperature is lower than 90?C. The COP can reach 2.74, especially
at -5?C.
Publisher
National Library of Serbia
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