A high efficiency hybrid stirling-pulse tube cryocooler
نویسندگان
چکیده
منابع مشابه
Studies of Superfluid Stirling and Pulse Tube
There is a niche for a sub-Kelvin cryogenic refrigeration unit that is simple, efficient, and does not require gravity. The superfluid Stirling refrigerator was developed in response to this demand. The refrigerator has cooled to 168 mK while exhausting heat at 383 mK, demonstrating the potential to cool to temperatures well below that attainable with a continuous 3He evaporation refrigerator. ...
متن کاملCFD analysis of a single stage pulse tube cryocooler with two double inlet valves
The internal working processes in pulse tube cryocooler (PTC) are quite complex due to the unsteady, oscillating compressible gas flow in the pulse tube. Although considerable theoretical studies have been carried out as of date phenomena occurring in a pulse tube cryocooler are still to be understood. The present research work is carried out in order to understand the cooling mechanism and to ...
متن کاملDevelopment of the Pulse Tube Refrigerator as an Efficient and Reliable Cryocooler
This paper presents a review of the pulse tube refrigerator from its inception in the mid-1960s up to the present. Various factors are discussed which brought it from a laboratory curiosity to the point where it is now the most efficient of all cryocoolers and reliable enough to be used on space missions. Carnot efficiencies as high as about 20% at 80 K and temperatures as low as 2 K have been ...
متن کاملThe Myth of the high-efficiency external-combustion Stirling Engine
The reported discrepancy between theory and experiment for external combustion Stirling engines is explained by the addition of thermal resistance of the combustion gasses to the standard Carnot model. In these cases, the Stirling engine ideal efficiency is not as is normally reported equal to the Carnot cycle efficiency but is significantly lower. A new equation for ideal Stirling engine effic...
متن کاملEffect of Geometric Configuration and Cooling Performance in Stirling- ype Pulse Tube Refrigerator
For a given linear compressor, the geometric configuration of the PTR (pulse tube refrigerator) affects the dynamic behavior of the linear compressor as well as the cooling performance of the PTR. The geometric configuration of each component precisely determines the flow impedance which contains the flow resistance, the inertance effect, and the compliance effect. In this paper, several simula...
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ژورنال
عنوان ژورنال: AIP Advances
سال: 2015
ISSN: 2158-3226
DOI: 10.1063/1.4915900