CAJ | 학술논문

针对多通路并联回路板式脉动热管建立实验台，采用铜质模块加热和水浴冷却方式作为热工条件，着重考察脉动热管在不同倾角（90°，75°，60°）及冷却工况（4.5 g·s-1和9.0 g·s-1）下的传热性能，通过壁面温度的振荡和传热热阻来评价其传热效果。实验结果表明，重力对多通路并联回路板式脉动热管传热性能的影响较大，随着倾角的减少，工质的回流变弱，传热热阻变大，传热极限变低；脉动热管的加热功率与冷却能力是相互匹配的，匹配度越高，脉动热管越不易干烧，传热极限越高，在有倾角的工况下提高传热极限表现得更为明显；脉动热管运行时存在一个最佳水流量，在最佳冷却工况下，脉动热管的运行热阻最低。
침대다통로병련회로판식맥동열관건립실험태，채용동질모괴가열화수욕냉각방식작위열공조건，착중고찰맥동열관재불동경각（90°，75°，60°）급냉각공황（4.5 g·s-1화9.0 g·s-1）하적전열성능，통과벽면온도적진탕화전열열조래평개기전열효과。실험결과표명，중력대다통로병련회로판식맥동열관전열성능적영향교대，수착경각적감소，공질적회류변약，전열열조변대，전열겁한변저；맥동열관적가열공솔여냉각능력시상호필배적，필배도월고，맥동열관월불역간소，전열겁한월고，재유경각적공황하제고전열겁한표현득경위명현；맥동열관운행시존재일개최가수류량，재최가냉각공황하，맥동열관적운행열조최저。
An experimental setup was established based on a closed loop plate pulsating heat pipe with parallel channels and a series of experiments were conducted to study its operational performance with acetone and ethanol. Heating copper block and cold water bath were adopted as thermal conditions in the experiments. The characteristics were investigated for different inclinations (90°, 75°, and 60°) and cooling conditions (4.5 and 9.0 g·s-1). The heat-transfer performance of the pulsating heat pipe was mainly evaluated by thermal resistance and wall temperature. The results show that gravity has great influence on the heat transfer. At smaller inclination, thermal resistance is larger and heat transfer limit is lower. Heating power and cooling capacity need to be matched each other, and heat transfer limit will be higher with higher matching degree, especially with inclination.An experimental setup was established based on a closed loop plate pulsating heat pipe with parallel channels and a series of experiments were conducted to study its operational performance with acetone and ethanol. Heating copper block and cold water bath were adopted as thermal conditions in the experiments. The characteristics were investigated for different inclinations (90°, 75°, and 60°) and cooling conditions (4.5 and 9.0 g·s-1). The heat-transfer performance of the pulsating heat pipe was mainly evaluated by thermal resistance and wall temperature. The results show that gravity has great influence on the heat transfer. At smaller inclination, thermal resistance is larger and heat transfer limit is lower. Heating power and cooling capacity need to be matched each other, and heat transfer limit will be higher with higher matching degree, especially with inclination. There is a best mass flow rate during the operation, and the thermal resistance is the lowest under the best cooling condition.