| Title |
An Experimental Study on Ultrasonic Spray Cooling of Heat Pipe Condenser |
| Keywords |
Heat pipe ; 히트파이프 ; Screen wick ; 스크린 윅 ; Ultrasonic spray cooling ; 초음파 분무냉각 ; Thermal resistance ; 열저항 ; Heat transfer ; 열전달 |
| Abstract |
In this study, the spray cooling heat transfer and working characteristics of the screen wick heat pipe with ultrasonic spray cooling system in condenser were experimentally investigated. The heat pipe was made of copper tube 300mm long with inner diameter of 11.1mm. The evaporator and condenser lengths of heat pipe were 40, 200mm and the wick structure consists of two layer of 100 mesh copper screen. The experimental results show that the ultrasonic spray cooling increases the heat transfer rate on the condenser surface, and the total thermal resistance of heat pipe system decreases remarkably. A comparison is made for the two working fluids, water and ethanol. The surface temperature of the ethanol tube in evaporator section becomes higher than that of the water tube. Thus, the experimental result shows that water is more useful than ethanol as the working fluid because of increasing the operational limit within this experimental conditions. |