CAJ | 학술논문

设计一款新型细薄膜蒸发器，并与压缩式制冷系统相结合，对新型细薄膜蒸发器的传热特性进行研究．结果表明：随着蒸发器蒸发温度的升高，两种蒸发器的蒸发功率均呈线性增加，相同工况下，细薄膜蒸发器的蒸发功率约为普通光管蒸发器蒸发功率的2倍；细薄膜蒸发器的进出口壁面温差明显低于普通光管蒸发器，光管蒸发器的平均传热温差比细薄膜蒸发器高出约2℃．对应每个工况下，细薄膜蒸发器的换热系数明显高于普通光管蒸发器，0～5℃时，细薄膜蒸发器可保持较高的换热系数，换热系数在5℃时达到最大．实验数据说明，细薄膜蒸发器的传热性能明显优于普通光管蒸发器．
설계일관신형세박막증발기，병여압축식제랭계통상결합，대신형세박막증발기적전열특성진행연구．결과표명：수착증발기증발온도적승고，량충증발기적증발공솔균정선성증가，상동공황하，세박막증발기적증발공솔약위보통광관증발기증발공솔적2배；세박막증발기적진출구벽면온차명현저우보통광관증발기，광관증발기적평균전열온차비세박막증발기고출약2℃．대응매개공황하，세박막증발기적환열계수명현고우보통광관증발기，0～5℃시，세박막증발기가보지교고적환열계수，환열계수재5℃시체도최대．실험수거설명，세박막증발기적전열성능명현우우보통광관증발기．
A novel thin film evaporator was designed and com-bined with a compression refrigeration system , and its heat transfer performance was studied .Results show that both the two kinds of evaporators ’ cooling capacity increases linearly with the temperature increasing of evaporator evaporation . And under the same conditions , the cooling capacity of thin film evaporator is two times larger than that of common smooth tube evaporator .As evaporating temperature increasing , the inlet and outlet temperature difference of thin film evaporator is significantly lower than that of smooth tube evaporator , and the average heat transfer temperature difference of smooth tube evaporator ’ s is 2℃ higher than that of thin film evaporator . Corresponding to each condition , the heat transfer coefficient of thin film evaporator is obviously larger than that of smooth tube evaporator .When the temperature is 0~5 ℃, the thin film evaporator can maintain a relatively high heat transfer co-efficient , and the heat transfer coefficient reaches the maxi-mum value when the temperature is 5℃.Experimental data demonstrate that heat transfer performance of thin film evapo-rator is much better than that of smooth tube evaporator .