Experimental and Numerical Study on Fan-Supplied Condenser Deterioration under Built-In Condition and Its Corresponding Refrigerator Performance
Experimental and Numerical Study on Fan-Supplied Condenser Deterioration under Built-In Condition and Its Corresponding Refrigerator Performance
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DOI：
10.3390/en15228666
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发表时间：
2022-11
期刊：
影响因子：
3.2
通讯作者：
Yu Sun;Rijing Zhao;Yikun Yang;Dong Huang
中科院分区：
文献类型：
--
作者：
Yu Sun;Rijing Zhao;Yikun Yang;Dong Huang
由于用户对家电与陈设一体化的要求很高，近年来，内置冰箱在国内大行其道。然而，内置的配置将导致显着的性能恶化，这已经较少定量研究。通过实验和数值模拟的方法对内置式和独立式冷凝器及其制冷机的性能进行了比较。与独立工况相比，内置式冷凝器性能较差，原因有二：冷凝器空气流量降低28.6%，热短路气流导致冷凝器入口空气温度升高10.72 °C。这种散热劣化使冷凝温度和排出温度升高，导致冰箱冷却能力损失。相应地，压缩机增加转速和功率以补偿损失。压缩机开启时间比减少了8%，但压缩机开启期间的平均功率增加了56.9%，最终增加了43.4%的能耗。该研究也为进一步优化内置式冰箱的散热和流场提供了一定的指导。
The built-in refrigerator has been popular in China in recent years due to users’ high requirements for the integration of home appliances and furnishings. However, the built-in configuration will cause a significant performance deterioration, which has been less quantitively studied. The condenser and its refrigerator performance are compared experimentally and numerically between built-in and free-standing configurations. By contrast with the free-standing condition, the built-in condenser has poor performance attributed to two reasons: 28.6% lower condenser air flowrate and 10.72 °C higher condenser inlet air temperature caused by the hot short-circuited airflow. This heat dissipation deterioration increases the condensing temperature and discharge temperature, resulting in a refrigerator cooling capacity loss. Correspondingly, the compressor increases the rotating speed and power to compensate for the loss. The compressor ON-time ratio reduces by 8% but the average power during the compressor-on period increases by 56.9%, finally increasing the energy consumption by 43.4%. This study also provides some guidance for further heat dissipation and airflow field optimization of built-in refrigerators.