Simulation and analysis of forced air precooling performance of apples with different fruit diameters

Authors

TIAN Jinjin, Key Laboratory of Refrigeration Technology, Tianjin University of Commerce, Tianjin 300314, China;School of Mechanical Engineering, Tianjin University of Commerce, Tianjin 300314, China
GU Xudong, Key Laboratory of Refrigeration Technology, Tianjin University of Commerce, Tianjin 300314, China;School of Mechanical Engineering, Tianjin University of Commerce, Tianjin 300314, China;Tianjin Academy of Agricultural Sciences National Engineering Research Center for Preservation of Agricultural Products 〔Tianjin〕, Key Laboratory of Storage and Preservation of Agricultural Products of the Ministry of Agriculture and Rural Affairs, Tianjin 300384, China
ZHANG Zhe, Key Laboratory of Refrigeration Technology, Tianjin University of Commerce, Tianjin 300314, China;School of Mechanical Engineering, Tianjin University of Commerce, Tianjin 300314, ChinaFollow
ZHU Zhiqiang, Tianjin Academy of Agricultural Sciences National Engineering Research Center for Preservation of Agricultural Products 〔Tianjin〕, Key Laboratory of Storage and Preservation of Agricultural Products of the Ministry of Agriculture and Rural Affairs, Tianjin 300384, China
JI Xian, Tianjin Academy of Agricultural Sciences National Engineering Research Center for Preservation of Agricultural Products 〔Tianjin〕, Key Laboratory of Storage and Preservation of Agricultural Products of the Ministry of Agriculture and Rural Affairs, Tianjin 300384, China

Corresponding Author(s)

张哲（1975—），男，天津商业大学教授，博士。E-mail: zhang zhe @tjcu.edu.cn

Abstract

Objective: To analyze the effect of apples of different fruit diameters on differential pressure precooling under the same box. Methods: Based on the spherical analogy model and heat transfer theory, the CFD unsteady SST k-ω turbulence model was used to numerically simulate the differential pressure precooling of apples with different air supply air speed, temperature, box opening size and fruit diameter, and three different working conditions were selected for accuracy. The simulation scheme of mixed orthogonal test was used to discuss the effects of different factors and different fruit diameters on the cooling rate and pre-cooling uniformity. Results: The lower of the air supply temperature was, the faster the wind speed was, the smaller of the apple diameter was, and the faster of the cooling rate it was. The higher of the supply air temperature was, the faster the wind speed was, the larger of the opening was, and the better of the uniformity of precooling it was. Based on the comparison of orthogonal test results, the effect of fruit diameter on differential pressure precooling was significant. Conclusion: Apple fruit size has the greatest influence on the cooling rate and uniformity of pre-cooling, and reasonable packaging and stacking methods need to be adopted for apples with different fruit diameters.

Publication Date

3-27-2024

First Page

117

Last Page

124,176

DOI

10.13652/j.spjx.1003.5788.2023.80328

Recommended Citation

Jinjin, TIAN; Xudong, GU; Zhe, ZHANG; Zhiqiang, ZHU; and Xian, JI (2024) "Simulation and analysis of forced air precooling performance of apples with different fruit diameters," Food and Machinery: Vol. 40: Iss. 2, Article 18.
DOI: 10.13652/j.spjx.1003.5788.2023.80328
Available at: https://www.ifoodmm.cn/journal/vol40/iss2/18

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