蓄热器放热规律的实验研究

An Experimental Study of Heat Accumulator Heat Release Rate

本文对蓄热器的放热规律进行了实验研究,提出了蓄热器放热特性的数值计算方法。根据此方法,分析了蒸发速率等特性变化规律,发现蒸发速率不一定随压力降低而单调下降,显示出与前人不同的规律。对此现象进行了分析,指出当蓄热器结构特性一定时,蒸发速率取决于放热时压降速度和当时的热力状态。实验所得出的规律与数值解相吻合。最后还进行了数学论证。

This paper deals with an experimental study of the heat release rate of a heat accumulator and presents a numerical method for calculating its heat release characteristics. Based on the said method, an analysis is made of the variationrelationship of evaporation rate and other characteristics. It is found that the evaporation rate does not unequivocally decrease with the decrease in pressure drop. A detailed analysis of the newly discovered phenomenon leads one to suggest that. under definite construction characteristics of an accumulator, the evapotation rate shall be dependent on the pressure drop speed during heat release and the thermal state existing at that time.The results obtained through the tests have been found to be in good agreement with those of a numerical solution. The paper ends with a corroboration of the above by mathematical means.