Experimental investigation of R410A and R32 falling film evaporation on horizontal enhanced tubes

2018 ◽  
Vol 137 ◽  
pp. 739-748 ◽  
Author(s):  
Pu-Hang Jin ◽  
Chuang-Yao Zhao ◽  
Wen-Tao Ji ◽  
Wen-Quan Tao
Keyword(s):  
Experimental Investigation ◽  
Falling Film ◽  
Film Evaporation ◽  
Enhanced Tubes ◽  
Falling Film Evaporation

Experimental Investigation of Falling Film Evaporation on Horizontal Tubes at Low-Pressure

2011 ◽  
Vol 236-238 ◽  
pp. 1572-1575 ◽  
Author(s):  
Hong Liu ◽  
Hu Gen Ma ◽  
Chang Sheng Li
Keyword(s):  
Heat Transfer ◽  
Experimental Investigation ◽  
Flow Rate ◽  
Heat Transfer Performance ◽  
Transfer Performance ◽  
Falling Film ◽  
Film Evaporation ◽  
Horizontal Tubes ◽  
Falling Film Evaporation ◽  
The Impact

Experimental investigation of falling film evaporation on horizontal tubes was carried out in this paper. Tube surface, spray flow rate and coolant flow rate were the factors considered in the experiment. The impact on falling film evaporation performance was obtained as expected. Experimental results are obtained that the heat transfer performances of low finned tubes are better than that of smooth tubes. The increasing of flow rate enhances heat transfer performance of falling film evaporation at first, while the flow rate gets a certain value, it will hinder the improvement of heat transfer performance. It was also found that there is almost no effects on heat transfer coefficient when the flow rate of coolant changes.

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