| 摘要: |
| 冷凝器是汽车空调系统中的重要部件之一，传统冷凝器设计基于进风风量分布均匀的前提，但在实际应用过程中由于防撞梁的存在造成冷凝器进风并不均匀，使换热性能迅速下降。本文研究了一种新型冷凝器流程设计，中部为过热区，上部和中下部为两相区，下部为过冷区，尽可能发挥冷凝器本身的散热潜力。经实验研究，新型流程布置冷凝器的换热量、COP、系统流量等综合性能较传统的冷凝器提升约10%~15%，且在有汽车防撞梁时提升效果更为显著，冷凝器单体降温效果比原机提升4 ℃，大幅降低由汽车防撞梁引起的风速分布不均对系统性能的影响，能较好的匹配汽车空调系统。 |
| 关键词: 冷凝器 防撞梁 风速不均 流程设计 换热量 |
| DOI： |
| 投稿时间：2019-07-15 修订日期：2019-08-14
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| 基金项目: |
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| Experimental Study of the Condenser of an Automotive Air Conditioner with Non-uniform Inlet Air Velocity |
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Liu Yusheng1, Li Wanyong1, Shi Junye1, Chen Jiangping1, Teng Shizheng2, He Liu2
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| (1.Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University;2.Zhejiang Kangsheng Co., Ltd.) |
| Abstract: |
| The condenser is one of the important components in an automotive air conditioning system. A traditional condenser is designed on the premise that the inlet air volume is evenly distributed. However, in reality, condenser inlet air is not uniform due to the presence of the anti-collision beam, which makes the thermal performance rapidly decline. In this paper, a new design of condenser layout was studied. The middle region is the superheating area, the upper and middle lower parts are the two-phase area, and the lower part is the super cooling area, which expresses the maximum heat dissipation potential of the condenser. Experimental analyses demonstrated that the heat exchange capacity, COP, system flowrate, and other comprehensive performance indices of the condenser with new process layout were 10%–15% higher than a traditional condenser. Furthermore, this enhancement in performance was greater in the presence of a car anti-collision beam. The cooling effect of the condenser was 4 °C higher than that of the original construction, which greatly reduced the influence of the uneven distribution of air velocity caused by the car’s anti-collision beam on system performance. |
| Key words: condenser anti-collision beam non-uniform air velocity process layout design heat exchange capacity |
