Experimental study on the temperature uniformity of radiator based on micro heat pipe array in plateau area

Abstract

In order to study and analyze the surface temperature uniformity of micro heat pipe array radiator, through comparative experiments, we found that: When the water supply flow is 1600 L/h, and the water supply temperature is 65 °C to 85 °C, the temperature difference between the head end and the end of the array radiator filled with R141b in the horizontal direction is only 1.9 ~ 2.1°C,the temperature drop ratio in the vertical direction is only reduced from 1.3% to 0.9%; The temperature drop ratio of the first end and the end of acetone filling is 4.2% to 2.5%,the temperature drop ratio in the vertical direction is 3.2% to 1%; The temperature drop ratio of the head end and the end of the copper aluminum composite radiator is 36.5% to 20.9%,the temperature drop ratio in the vertical direction is 9.5% to 1.2%. When the water supply temperature is 75 °C, the water supply flow is 1050L/h to 2200L/h, the maximum temperature drop ratio of the head end and the end of the micro heat pipe array radiator is only reduced from 3.4% to 2.6%,the temperature drop ratio in the vertical direction is only reduced from 0.8% to 0.6%; The temperature drop ratio of the head end and the end of the copper aluminum composite radiator decreased from 35.1% to 19.4%, the temperature drop ratio in the vertical direction decreased from 5.7% to 1.5%. Therefore, the temperature uniformity of the micro heat pipe array radiator in the horizontal and vertical directions is better than the existing copper aluminum composite radiator.