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| Design and Experiment of Fruit and Vegetable Display Cabinet with Cyclic Air Curtain Semiconductor Refrigeration |
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| DOI：10.16768/j.issn.1004-874X.2022.04.018 |
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| Abstract: |
| 【Objective】In order to improve the preservation quality and prolong the shelf life of flowering cabbage,
a kind of display cabinet with cyclic air curtain semiconductor refrigeration was designed. 【Method】The display cabinet
was taken as the display object, a heat load model based on internal and external heat transfer of the cabinet was established,
and the fresh-keeping effect of the display cabinet with cyclic air curtain semiconductor refrigeration was verified by experiments.【Result】After 27 h of display, mass loss rates of three display modes (display cabinet with cyclic air curtain
semiconductor refrigeration, open display cabinet and room temperature display) were 9.3%, 20.6% and 34.8%, respectively.
The good vegetable rates were 35.8%, 0 and 0, respectively. And the sensory evaluation scores were 2.17, 1.08, 0, respectively.
The SPAD values of the three display modes varied between 46 and 54. The mass loss rate of flowering cabbage with cyclic air
curtain display cabinet was significantly lower than that of the other two modes after 3 h of display. After 6 h of display, the good
vegetable rate and sensory evaluation score were significantly higher than those of the other two modes. 【Conclusion】With
the flowering cabbage as display object in display cabinet, a heat load model based on internal and external heat transfer of the
cabinet is established, and the display cabinet with cyclic air curtain semiconductor refrigeration has a good fresh-keeping effect on
flowering cabbage. |
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