Temperature uniformity analysis of a domestic refrigerator with different multi-duct shapes
Temperature uniformity analysis of a domestic refrigerator with different multi-duct shapes
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DOI：
10.1016/j.applthermaleng.2021.116604
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发表时间：
2021-04
影响因子：
6.4
通讯作者：
Jae Hyuk Wie;H. Cho;Y. Park;Young Soo Kim;Y. M. Seo;M. Ha
中科院分区：
文献类型：
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作者：
Jae Hyuk Wie;H. Cho;Y. Park;Young Soo Kim;Y. M. Seo;M. Ha
对采用蒸发器和多通道系统的顶冷式冰箱系统的温度均匀性进行了实验和数值研究。为了准确地预测整个顶冷式冰箱系统内的温度分布以及复杂的流场和温度场的分布，将多孔介质技术和热平衡法与控制整个顶冷式冰箱系统内流动和温度场的守恒方程相结合，提出了一种综合数值方法。采用这种数值方法，对整个顶冷式冰箱系统中存在蒸发器和多通道系统的绝热壁面的实际边界条件进行了有效的数值模拟。考虑了四种不同形状的多风道系统对顶冷式冰箱系统温度均匀性的影响，给出了矩形和三角形组合形成的风道形状的温度均匀度最好，比基本模型小约56%。将数值模拟得到的温度分布与实验得到的温度分布进行了比较，结果表明本文提出的数值方法是有效的，两者吻合较好。
Experimental and numerical investigations were performed to improve the temperature uniformity in a top-freezer refrigerator system with an evaporator and a multi-duct system. In order to accurately predict the temperature uniformity as well as the distribution of the complex flow and temperature fields in the whole top-freezer refrigerator system, this study developed the comprehensive numerical methodology which combines the porous media technique and a heat balance method with the conservation equations governing the flow and temperature fields in whole top-freezer refrigerator system. Using this numerical methodology, the numerical simulation was effectively carried out with the actual boundary condition of the adiabatic wall in the presence of the evaporator and multi-duct system in the whole top-freezer refrigerator system. The effect of four different shapes of the multi-duct system on the temperature uniformity in the top-freezer refrigerator system was considered, giving the best temperature uniformity for the duct shape generated by a combination of rectangular and triangular blocks, which is approximately 56% smaller than the basic model. The distribution of temperatures obtained from this numerical simulation was compared with that obtained from the present experiment, showing the validity of the present numerical methodology developed with good agreement between them.