The main function of finned tube is to heat and cool, but the more fins the finned tube has on the machine that is not used for cooling, the better? The answer is, of course, negative. If you want to ask why, Xiaobian will tell you why. The more finned tubes used for industrial cooling, the better.
1. When the heat transfer area of finned tube and fin is doubled, the heat transfer coefficient can not be doubled, but should be discounted, generally (0.9-0.7). This shows that the more fin, the lower the efficiency of fin, and the economic increase of fin will be reduced.
2, the fins are too high and too dense, which will increase the difficulty of the process and improve the processing cost.
3, if the fins are too high and too dense, it is easy to cause ash accumulation and difficult to remove dust.
The more finned tubes used for industrial cooling, the better.
So how many finned tubes are selected depends on the finning ratio, that is, the ratio of the total heat transfer area after increasing fins divided by the total area without increasing fins. According to the normal regulations, the finning ratio is generally considered to be the best between 5 and 10. Therefore, when choosing the finned tube, we must make a reasonable choice. It is also reasonable that the extreme must be contrary to the extreme. 辛苦整理.转载请注明http://www.wxsxsjx.com
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