Heat transfer characteristics of spray cooling in a closed loop
Heat transfer characteristics of spray cooling in a closed loop
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DOI：
10.1016/s0017-9310(03)00217-5
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发表时间：
2003-09
影响因子：
5.2
通讯作者：
Lanchao Lin;R. Ponnappan
中科院分区：
文献类型：
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作者：
Lanchao Lin;R. Ponnappan
建立了一套用于高热流密度热源冷却的闭环喷雾冷却试验装置。采用多喷嘴板上的8个微型喷嘴，在1×2 cm 2的冷却表面上形成喷雾阵列。采用FC-87、FC-72、甲醇和水作为工质。在不同的工作温度、喷嘴压降（从0.69到3.10 bar）和热通量下获得了受限和封闭系统中多喷嘴喷雾冷却的热性能数据。结果表明，喷雾冷却器的临界热流密度可达90 W/cm 2（氟碳流体）和490 W/cm 2（甲醇）。对于水，临界热通量高于500 W/cm 2。在FC-72喷雾冷却系统中，空气的引入对冷却表面的喷雾换热特性有重要影响。
A closed loop spray cooling test setup is established for the cooling of high heat flux heat sources. Eight miniature nozzles in a multi-nozzle plate are used to generate a spray array targeting at a 1×2 cm2cooling surface. FC-87, FC-72, methanol and water are used as the working fluids. Thermal performance data for the multi-nozzle spray cooling in the confined and closed system are obtained at various operating temperatures, nozzle pressure drops (from 0.69 to 3.10 bar) and heat fluxes. It is exhibited that the spray cooler can reach the critical heat fluxes up to 90 W/cm2with fluorocarbon fluids and 490 W/cm2with methanol. For water, the critical heat flux is higher than 500 W/cm2. Air purposely introduced in the spray cooling system with FC-72 fluid has a significant influence on heat transfer characteristics of the spray over the cooling surface.