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Lord Fin Tube-Enhance the heat transfer performance of high frequency welded finned tubes

Two methods to enhance the heat transfer performance of high frequency finned tubes

 
At present, the most common and widely used finned tube is the high-frequency finned tube. The design and calculation of other types of finned tube often refer to the high-frequency finned tube. The research on high frequency finned tube is mainly focused on how to improve its heat transfer performance. In this paper, a method to enhance the heat transfer performance of high frequency finned tube is proposed, and the structure of high frequency finned tube is optimized and improved. Using TESCOR platform - high frequency finned tube performance test bench, the thermodynamic performance of high frequency finned tube before and after improvement was tested, and the thermodynamic comparison calculation was carried out by using test data.
 
The structure of high-frequency finned tube is optimized and improved. The thermal performance of high-frequency finned tube before and after improvement is tested by TESCOR platform-high-frequency finned tube performance test bench. Two methods to enhance the heat transfer performance of high frequency finned tube are put forward: one is to design the finned tube of high frequency finned tube (evaporator) which is easy to frost under low temperature condition into variable pitch finned tube structure, which not only enlarges the heat transfer area of finned tube, but also enhances the flow velocity of airflow in tube; the other is to design the finned tube of high frequency finned tube (evaporator) which is easy to frost under air The pitch internally threaded tube is designed as a variable pitch internally threaded tube to increase the turbulence of air flow in the tube and improve the heat transfer coefficient. The results show that the heat transfer coefficients of high frequency finned tubes are increased by 9.8% and 3.82% respectively.

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