Full
Outline
Aiming at the common problem of nonuniformity of the temperature field within refrigerated cabinet，perforated plates were used to structurally modify the shelf to optimize the air flow organization inside the refrigerators.The mathematical and physical models of the closed food refrigerated cabinet were established using the method of CFD，and the temperature distribution of the refrigeration cabinet was simulated and studied.By comparing with the experimental data，the reliability of the model was verified.On this basis，the effect of different pore diameters（10，20，30 mm） and porosity rates（6%，9%，12%） were analyzed on the temperature field in the refrigerator.The results show that when the pore diameter is 30 mm and the porosity rate is 9%，the uniformity of the temperature field in the refrigerator is optimal.The food preservation performance is also ideal.Compared with the shelf without pore，the shelf with holes can promote air flow and heat exchange between different layers，significantly improving the uniformity of the temperature field inside the refrigerated cabinet.The research provides important theoretical basis and reference for the design and optimization of refrigeration equipment.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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