This work focuses on the heat transfer and flow characteristics with the different placement of the multi-deck display cabinet and tries to optimize the placement position of refrigerated display cabinet. First, the temperature distribution in a refrigerated display cabinet was experimentally investigated. The result showed that the food temperature in front is 3.6–4.8°C higher than back row of the same layer, and temperature fluctuation of 0.3–0.7°C less than the back row. Then, a three-dimensional numerical model of the display cabinet was established, and the k – ε model is employed to compare and analyze the heat transfer and air curtain characteristics. The results show that the placement methods have great influence on the performance of the display cabinet. The face-to-back placement method can acquire a better food refrigeration performance, and the food temperature of the face-to-back placement method is 0.3–0.5°C lower than that of the face-to-face placement method.

中文翻译：

---

超市多层展示柜不同放置方式传热与流动特性的实验与数值研究

这项工作着眼于多层展示柜不同放置的传热和流动特性，并试图优化冷藏展示柜的放置位置。首先，对冷藏展示柜中的温度分布进行了实验研究。结果表明，与同一层的后排食物相比，前排食物的温度要高3.6-4.8°C，而后排食物的温度波动要低0.3-0.7°C。然后，建立了展示柜的三维数值模型，并使用k –ε模型对传热和气幕特性进行了比较和分析。结果表明，摆放方式对展示柜的性能影响很大。