Pulse Tube Oxygen Liquefier
Pulse Tube Oxygen Liquefier
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发表时间：
2000
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通讯作者：
E. Marquardt;R. Radebaugh
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作者：
E. Marquardt;R. Radebaugh
本文讨论了单级同轴脉冲管制冷机作为氧气制冷机的性能。这是NASA/JSC的一个半尺寸的实验室装置，用于演示在火星上储存氧气的技术。这种净化器将是一种从火星二氧化碳大气中提取氧气并以液体形式储存氧气的工厂的一部分。液态氧可以用作燃料的氧化剂，也可以在载人使命中用于呼吸。脉冲管和回热器同轴布置，在90 K下提供18.8 W的冷却，PV输入功率为222 W。由此产生的性能系数（COP）是基于光伏输入功率的卡诺值的20.0%，是有史以来最高的。液氮以1.75 g/min（2.17 cm 3 /min）的速率产生，PV输入功率为215 W。氧气的产生速度应约为2.7 g/min（2.37 cm 3 /min）。虽然这款冷却器不是飞行版本，但它是一种类似飞行的设计，类似于在使命中使用的设计。本文介绍了详细的几何结构和热性能测试的结果。
The performance of a single-stage coaxial pulse tube refrigerator used as an oxygen liquefier is discussed. The liquefier is a half-size laboratory unit for NASA/JSC to demonstrate the technology of liquefying and storing oxygen on Mars. The liquefier would be part of a plant that extracts oxygen from the Martian carbon dioxide atmosphere and stores the oxygen in liquid form. The liquid oxygen could then be used either for the oxidizer of a fuel or for breathing in a manned mission. The pulse tube and regenerator, which are arranged coaxially, provide 18.8 W of cooling at 90 K with 222 W of PV input power. The resulting coefficient of performance (COP) is 20.0% of the Carnot value based on PV input power, among the highest ever achieved. Liquid nitrogen was produced at a rate of 1.75 g/min (2.17 cm 3 /min) with 215 W of PV input power. Oxygen should be produced at about 2.7 g/min (2.37 cm 3 /min). While this cooler is not a flight version, it is a flight-like design similar to what would be used on a mission. This paper presents details of the liquefier geometry and results of thermal performance tests.