Aiming at the fact that too much infrared radiation is generated by the tank′s body,the theory of applying thermoelectric generation technology to tank infrared restraint was analyzed,then thermoelectric generation technology was applied to tank′s drainpipe surface.Experimental tests were done at different revolving speeds.The results show that thermoelectric generators can produce sufficient electric power to drive fan.And the external surface temperature of the radiator is reduced by over 65.0% compared to the drainpipe′s temperature when combining the fan cooling and heat radiation;When the drainpipe′s temperature which is caused by engine′s revolving speed rises,the temperature difference of thermoelectric generators′ cold and hot sides increases.Then the outport voltage which is used to drive the fan rises,and heat transfer convection is enhanced,which causes radiator surface temperature to decrease more obviously.