Two-stage high frequency pulse tube cooler for refrigeration at 25 K

被引：44
|
作者：
Dietrich, M. [1 ]
Thummes, G.
机构：
[1] Univ Giessen Klinikum, Inst Appl Phys, D-35392 Giessen, Germany
来源：
CRYOGENICS | 2010年 / 50卷 / 04期
关键词：
Pulse tube; Power applications;
D O I：
10.1016/j.cryogenics.2010.01.010
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
A two-stage Stirling-type U-shape pulse tube cryocooler driven by a 10 kW-class linear compressor was designed, built and tested. A special feature of the cold head is the absence of a heat exchanger at the cold end of the first-stage, since the intended application requires no cooling power at this intermediate temperature. Simulations where done using SAGE-software to find optimum operating conditions and cold head geometry. Flow-impedance matching was required to connect the compressor designed for 60 Hz operation to the 40 Hz cold head. A cooling power of 12.9 W at 25 K with an electrical input power of 4.6 kW has been achieved up to now. The lowest temperature reached is 13.7 K. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：281 / 286
页数：6
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