Demonstration of a gas separator composed of Knudsen pumps
Demonstration of a gas separator composed of Knudsen pumps
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DOI：
10.1016/j.vacuum.2015.12.015
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发表时间：
2016-03-01
期刊：
影响因子：
4
通讯作者：
Sugimoto, Hiroshi
中科院分区：
文献类型：
--
作者：
Nakaye, Shoeji;Sugimoto, Hiroshi
制作了由两台克努森泵组成的气体分离器模型。气体分离器的唯一能量来源是高达100k的温差。温差引起了克努森泵混合纤维素酯（MCE）膜微孔中稀薄气体的热蒸腾流动。利用气体流量和由此产生的压力变化将氦气和氖气的进料混合物分离成两种不同气体成分的气体。制备的模型气体分离器总膜面积为27 cm(2)，在原料气流量为5 sccm的情况下，两种产物气体的摩尔百分比相差5-6%。气体分离器的操作是连续的，因为目前的设备以及克努森泵不需要运动部件。(C) 2015 Elsevier Ltd.版权所有。
A model gas separator composed of two Knudsen pumps is fabricated. The only energy source of the gas separator is the temperature difference up to 100 K. The temperature difference induces the thermal transpiration flow of the rarefied gas in the micro-pores of the mixed cellulose ester (MCE) membrane in the Knudsen pump. The gas flow and the resultant pressure variation are used to separate the feed mixture of helium and neon gases into two gases having different gas compositions. The fabricated model gas separator, which has 27 cm(2) total membrane area, induces 5-6% difference of mole percentage between two product gases under the flow rate 5 sccm of the feed gas. The operation of the gas separator is continuous since the present device as well as the Knudsen pump requires no moving parts. (C) 2015 Elsevier Ltd. All rights reserved.