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翅片管是用在什么地方的?

发布时间:2019-03-25 作者:洛阳星利达热力设备有限公司

  什么地方需要使用翅片管呢?大家跟随翅片管厂家星利达一同来解决下吧!

       Where do you need to use finned tubes? Let's follow the fin tube manufacturer Xing Lida to solve it!

       不锈钢翅片管.jpg


  (1)管子两侧的换热系数如果相差很大,则应该在换热系数小的一侧加装翅片。

       (1) If the heat transfer coefficient on both sides of the pipe is very different, fins should be added on the side where the heat transfer coefficient is small.


  例1:锅炉省煤器,管内走水,管外流烟气,烟气侧应采用翅片。

      Example 1: Boiler economizer, water in the pipe, flue gas outside the pipe, fins should be used on the flue gas side。


  例2:空气冷却器,管内走液体,管外流空气,翅片应加在空气侧。

      Example 2: Air cooler, the liquid in the tube, the air outside the tube, the fins should be added on the air side。


  例3:蒸汽发生器,管内是水的沸腾,管外走烟气,翅片应加在烟气侧。

       Example 3: Steam generator, the water in the tube is boiling, the flue gas is taken outside the tube, and the fins should be added to the flue gas side.


  应注意,在设计时,应尽量将换热系数小的一侧放在管外,以便于加装翅片管。

      It should be noted that, at the time of design, the side with the small heat transfer coefficient should be placed outside the tube as much as possible to facilitate the installation of the fin tube.


  (2)如管子两侧的换热系数都很小,为了强化传热,应在两侧同时加装翅片,若结构上有困难,则两侧可都不加翅片。在这种情况下,若只在一边加翅片,对传热量的增加是不会有明显效果的。

      (2) If the heat transfer coefficient on both sides of the pipe is very small, in order to enhance heat transfer, fins should be added on both sides at the same time。 If there are structural difficulties, no fins may be added on both sides。 In this case, if fins are added only on one side, there is no significant effect on the increase in heat transfer amount。


  例1:传统的管式空气预热器,管内走空气,管外走烟气。因为是气体对气体的换热,两侧的换热系数都很低,管内加翅片又很困难,只好用光管了。

      Example 1: A conventional tubular air preheater, the air is taken inside the tube, and the flue gas is taken outside the tube。 Because it is the heat exchange between gas and gas, the heat transfer coefficient on both sides is very low, and it is very difficult to add fins in the tube, so it is necessary to use the light pipe。


  例2:热管式空气预热器,虽然仍是烟气加热空气,但因烟气和空气都是在管外流动,故烟气侧和空气侧都可方便地采用翅片管,使传热量大大增加。

      Example 2: The heat pipe type air preheater, although it is still flue gas to heat the air, since the flue gas and the air flow outside the pipe, the flue pipe side and the air side can conveniently adopt the finned tube to make the heat transfer amount. greatly increase.


  (3)如果管子两侧的换热系数都很大,则没有必要采用翅片管。

       (3) If the heat transfer coefficient on both sides of the pipe is large, it is not necessary to use a finned tube.


  例1:水/水换热器,用热水加热冷水时,两侧换热系数都足够高,就没有必要采用翅片管了。但为了进一步增强传热,可采用螺纹管或波纹管代替光管。

山东十一运夺金       Example 1: Water/water heat exchanger。 When heating cold water with hot water, the heat transfer coefficient on both sides is high enough, it is not necessary to use finned tubes。 However, in order to further enhance heat transfer, a threaded tube or a bellows may be used instead of the light tube。


  例2:发电厂冷凝器,管外是水蒸汽的凝结,管内走水。两侧的换热系数都很高,一般情况下,无需采用不锈钢翅片管。

       Example 2: Power plant condenser, outside the tube is condensation of water vapor, water in the tube。 The heat transfer coefficient on both sides is very high。 Under normal circumstances, it is not necessary to use stainless steel finned tubes。


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