【摘要】 本文介绍了真空集热管热损过程的实验结果。得出了热损速率随真空度的变化规律和总热损系数随温差的变化关系。在传导区内,向真空隔层填充低热导率气体可降低热损失。更多还原

【Abstract】 Heat loss from an evacuated tube collector and results of its experimental investigation are presented in this paper.The variation of heat loss rate with the vacuum degree,the effect of vacuum degree on the heat loss,the variation of overall heat loss coefficient with the temperature difference are found.Heat loss from the vacuum tube can be reduced when the vacuum gap is filled with some kind of the low thermal conductivity gas within the range of 1-10 torr.更多还原