The paper presents the results of analysis, development and tests of an ammonia miniature loop heat pipe (MLHP) with a flat evaporator, which has an active-zone diameter of 30 mm. The length and the diameter of the vapor and the liquid lines are 1m and 2/1.2 mm. The device serviceability has been demonstrated at a horizontal and a vertical orientation in 1-g conditions. The maximum heat load achieved on trials was equal, respectively, to 160W and 120W, which corresponds to a heat flow in the evaporation zone of 23 W/cm{sup}2 and 17 W/cm{sup}2. The minimum thermal resistance at nominal heat loads from 40 to 80 W varied in the range from 0.42 W/m{sup}2K to 0.59 W/m{sup}2K. A comparison has been made with a model MLHP with a cylindrical evaporator equipped with a copper and aluminum "saddle."
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机译:本文介绍了具有扁平蒸发器的氨微型环热管(MLHP)的分析,开发和试验结果,该蒸发器具有30mm的有源区直径。蒸汽和液体线的长度和直径为1M和2 / 1.2mm。已经在1-g条件下以水平和垂直方向进行了证明了装置可用性。在试验上实现的最大热负荷分别为160W和120W,其对应于蒸发区的热流23W / cm {sup} 2和17w / cm {sup} 2。标称热负载下的最小热阻在40至80W的范围内,范围为0.42W / m {sup} 2k至0.59 w / m {sup} 2k。使用具有圆柱形蒸发器的型号MLHP进行了比较,配备有铜和铝“鞍座”。
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