Testing of a Loop Heat Pipe with Two Evaporators and Two Condensers
Testing of a Loop Heat Pipe with Two Evaporators and Two Condensers
复制标题
具有两个蒸发器和两个冷凝器的环路热管的测试
DOI：
10.4271/2001-01-2190
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
G. Birur
中科院分区：
文献类型：
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作者：
J. Ku;G. Birur
大多数现有的回路热管（LHP）由单个蒸发器和单个冷凝器组成。具有多个蒸发器的LHP对于冷却多个热源或具有大的热足迹的热源将是非常理想的。将LHP技术扩展到包括多个蒸发器和多个冷凝器面临一些挑战，包括各个补偿室之间的相互作用、工作温度稳定性以及对快速功率和散热器温度瞬变的适应性。本文描述了一个LHP与两个蒸发器和两个冷凝器的广泛的测试。执行的测试包括启动、电源循环、散热器温度循环、储液器温度循环和毛细管极限。试验结果表明，该回路能在各种热负荷和热沉条件下成功运行。回路操作温度是总热负荷、两个蒸发器之间的热负荷分布以及两个冷凝器散热器的温度的函数。在大多数情况下，只有一个储层包含两相流体，另一个储层完全充满液体。此外，当测试条件改变时，回路操作温度的控制可以从一个贮存器转移到另一个贮存器。
Most existing Loop Heat Pipes (LHPs) consist of one single evaporator and one single condenser. LHPs with multiple evaporators will be very desirable for cooling multiple heat sources or a heat source with large thermal footprints. Extending the LHP technology to include multiple evaporators and multiple condensers faces some challenges, including the interaction between individual compensation chambers, operating temperature stability, and adaptability to rapid power and sink temperature transients. This paper describe extensive testing of an LHP with two evaporators and two condensers. Tests performed include start-up, power cycle, sink temperature cycle, reservoir temperature cycle, and capillary limit. Test results showed that the loop could operate successfully under various heat load and sink conditions. The loop operating temperature is a function of the total heat load, the heat load distribution between the two evaporators, and temperatures of the two condenser sinks. Under most conditions, only one reservoir contained two-phase fluid and the other reservoir was completely liquid filled. Moreover, control of the loop operating temperature could shift from one reservoir to the other as the test condition changed.