Experimental study of the effect of different defrost modes on the temperature field of freezer

Huan Sun; Xinbo Teng; Xinghua Liu; Junda Zhu; Haorong Xu

doi:10.1117/12.2634716

25 April 2022 Experimental study of the effect of different defrost modes on the temperature field of freezer

Huan Sun, Xinbo Teng, Xinghua Liu, Junda Zhu, Haorong Xu

Proceedings Volume 12244, 2nd International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2022); 122440S (2022) https://doi.org/10.1117/12.2634716
Event: 2nd International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2022), 2022, Guilin, China

Abstract

Frost inevitably occurs in cold rooms and a thick layer of frost can lead to a reduction in system efficiency. Therefore the system chiller needs to be melted when frost is formed. In recent years, the four-pipe hot gas frost melting method has been used in engineering. In the frost melting process, the influence of the frost heat on the temperature field of the cold storage determines the quality of the food stored in the cold storage. The changes and laws of the cold storage temperature field under the electric heating and four-pipe hot gas frost melting modes are studied through experiments. The results show that under the electric heating mode, the temperature fluctuates greatly in all parts of the store, and the temperature fluctuates up to 32.5°C in the return air area of the chiller. In the four-pipe hot gas melting mode, the maximum is only 2.66°C, which is 91.8% lower than the former. In terms of time and energy consumption, the four-pipe hot air melting mode takes 50% less time to defrost than electric heating and consumes approximately 51.8% less energy to defrost.

Citation Download Citation

Huan Sun, Xinbo Teng, Xinghua Liu, Junda Zhu, and Haorong Xu "Experimental study of the effect of different defrost modes on the temperature field of freezer", Proc. SPIE 12244, 2nd International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2022), 122440S (25 April 2022); https://doi.org/10.1117/12.2634716

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