Finned Pipe

Finned tube is extensively applied in hot air heating, drying, cooling, heumidifying and so on .

The medium  

   Steam , thermal oil , hot water and other hot medium

The tube dimension
   With 21×2mm sealess tube , coiling 15×0.4mm ,
   Finned plate distance : 5mm, 6mm,8mm
   Also can be customerization

Material 
   Tube :Carbon steel , stainless steel,  steel
   Fin : Aluminum  

Features 
●  Be able to replace all air heat exchanger tube
●  Compact structure, good apprearance, easy to install ,
●  Convenient to operate, long time usage.
●  It is not only can be provided to a concentrated heating ,
●  seperated small heating place, and other usage area

Application 
  It is extensively applied in hot air heating, drying, cooling, heumidifying and so on .

Tips

1, finned tube material selection principle; heat transfer tube in the media on the influence of heat transfer tube, the main focus on these aspects, corrosion, pressure, temperature, scaling, thermal conductivity, cost performance. Requirements can meet the process requirements, will not produce adverse consequences, good heat transfer performance, convenient material.

2, finned tube distance, sheet thickness and sheet thickness of these three data are complementary, the overall impact of the direct wing ratio of the size. The finning ratio is not the bigger the better, need to calculate the difference of the convection coefficient inside and outside the tube, the difference is big can use the fins with high finning ratio, the difference is small should use the fins with low finning ratio, no difference does not need to do the fins, such as the water-water heat exchange without phase change state, gas-gas heat exchange.

3, finned tube thickness, sheet thickness to the strength of the finned tube has a very big relationship, the main consideration is corrosion, friction loss, anti-cleaning and washing ability, the effect of heat transfer is not much. Therefore, in the case of meeting certain strength requirements, the sheet thickness should be as thin as possible, reduce the consumption of non-ferrous metal, in order to design and manufacture more economical finned tube radiator.

4, finned tube high. The transfer of heat is from the root to the top of the fins, the closer to the root of the place where the temperature is higher, as the heat is gradually replaced, the transfer temperature also drops, consider the top of the fins where the temperature is the lowest.

5、The structural arrangement of finned tube. This is one of the weakest links in the design of domestic finned tube radiator at present, and many design manufacturers do not have this concept. When the pressure drop requirement is met, the reasonable arrangement of finned tube can greatly improve the heat transfer efficiency of finned tube radiator. In fact, the formula of K value of heat transfer coefficient can also reflect that it has a very big relationship with the air quality flow rate; when the tube spacing becomes smaller, the air quality flow rate improves, and the value of heat transfer coefficient K increases.

Parameter Sheet

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