螺旋扁管干式蒸发器的传热性能

发布时间：2019-08-13 09:14

【摘要】：对螺旋扁管干式蒸发器(TDE)和常规折流板干式蒸发器(BDE)的传热性能进行实验研究。研究了蒸发温度(Te)、冷凝温度(Tc)、管外壳程流体Reynolds数(Reo)和热通量(qi)对传热性能的影响。研究表明,随着Te、Reo和qi的增大,TDE和BDE的传热性能均提高。随着Tc的增大,TDE和BDE的传热性能降低。对装配TDE和BDE的风冷热泵分别进行了测试,测试表明,在相同制冷工况下,TDE的总传热系数比BDE提高了36.3%,风冷热泵的制冷性能系数(COP)相应地提高了6.0%;在相同制热工况下,TDE的总传热系数比BDE提高了41.7%,风冷热泵的制热COP值相应地提高了15.8%;说明TDE可应用于风冷热泵,且其性能优于BDE。
[Abstract]:The heat transfer performance of spiral flat tube dry evaporator (TDE) and conventional baffle dry evaporator (BDE) was studied. The effects of evaporation temperature (Te), condensation temperature (Tc), tube shell side fluid Reynolds number (Reo) and heat flux (qi) on heat transfer performance were studied. The results show that the heat transfer performance of TDE and BDE increases with the increase of Te,Reo and qi. With the increase of Tc, the heat transfer performance of TDE and BDE decreases. The air-cooled heat pump assembled with TDE and BDE are tested respectively. the results show that under the same refrigeration condition, the total heat transfer coefficient of TDE is 36.3% higher than that of BDE, and the refrigeration performance coefficient (COP) of air-cooled heat pump is 6.0% higher than that of BDE, and the total heat transfer coefficient of TDE is 41.7% higher than that of BDE under the same heating condition, and the heat transfer coefficient of air-cooled heat pump is 15.8% higher than that of air-cooled heat pump. The results show that TDE can be used in air-cooled heat pump, and its performance is better than that of BDE..
【作者单位】：中国科学院广州能源研究所;中国科学院可再生能源重点实验室;广东省新能源和可再生能源研究开发和应用重点实验室;TCL空调器(中山)有限公司;
【基金】：广东美的制冷设备有限公司院市合作项目(科技创新项目)(2014HK100283) 中国南方智谷引进创新团队(顺府办函[2014]365号)~~
【分类号】：TB65

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