Design method of natural cool radiator

Posted by Mingfatech on August 29th, 2018

Considering that the temperature boundary layer is thicker with natural cool , if the tooth spacing is too small , the thermal boundary layer between the two teeth is easy to cross , affecting the convection on the tooth surface , it is generally recommended that the tooth spacing of the natural cool radiator was greater than 12 mms . If the tooth spacing of the radiator is less than 10 mms , the tooth height of the radiator can be determined by the tooth spacing (> 1.2 times the tooth height ) . Spacing It The heat transfers capacity of the surface of the natural cool radiator is weak , and the effect of natural convection will not be greatly affected by the increase in corrugation on the surface of the radiator teeth.LED heat sink . So it is suggested that the surface of the radiator teeth should not be corrugated . It Natural convection radiator surface is usually blackened to increase the radiation coefficient of the radiation surface and enhance radiation heat transfer . Because the natural convection take a long time to reach the heat balance , the thickness of the base plate and teeth of the natural convection radiator should be enough to resist the impact on the instantaneous heat load . It is suggested that the thickness of the base plate and teeth should be more than 5mm .