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期刊论文

A separate two-stage pulse tube cooler working at liquid helium temperature

邱利民QIU Limin HE Yonglin GAN Zhihua WAN Laihong & CHEN Guobang

Chinese Science Bulletin Vol. 50 No.1 January 2005,-0001,():

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摘要/描述

A novel 4K separate two-stage pulse tube cooler (PTC) was designed and tested. The cooler consists of two separate pulse tube coolers, in which the cold end of the first stage regenerator is thermally connected with the middle part of the second regenerator. Compared to the traditional coupled multi-stage pulse tube cooler, the mutual interference between stages can be significantly eliminated. The lowest refrigeration temperature obtained at the first stage pulse tube was 13.8K. This is a new record for single stage PTC. With two compressors and two rotary valves driving mode, the separate two-stage PTC obtained a refrigeration temperature of 2.5K at the second stage. Cooling capacities of 508mW at 4.2K and 15W at 37.5K were achieved simultaneously. A one-compressor and one-rotary valve driving mode has been proposed to further simplify the structure of separate type PTC.

版权说明:以下全部内容由邱利民上传于   2005年07月25日 17时37分46秒,版权归本人所有。

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