کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10637848 | 994005 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High frequency two-stage pulse tube cryocooler with base temperature below 20Â K
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
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چکیده انگلیسی
High frequency (30-50Â Hz) multi-stage pulse tube coolers that are capable of reaching temperatures close to 20Â K or even lower are a subject of recent research and development activities. This paper reports on the design and test of a two-stage pulse tube cooler which is driven by a linear compressor with nominal input power of 200Â W at an operating frequency of 30-45Â Hz. A parallel configuration of the two pulse tubes is used with the warm ends of the pulse tubes located at ambient temperature. For both stages, the regenerator matrix consists of a stack of stainless steel screen. At an operating frequency of 35Â Hz and with the first stage at 73Â K a lowest stationary temperature of 19.6Â K has been achieved at the second stage. The effects of input power, frequency, average pressure, and cold head orientation on the cooling performance are also reported. An even lower no-load temperature can be expected from the use of lead or other regenerator materials of high heat capacity in the second stage.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cryogenics - Volume 45, Issue 2, February 2005, Pages 155-159
Journal: Cryogenics - Volume 45, Issue 2, February 2005, Pages 155-159
نویسندگان
L.W. Yang, G. Thummes,