Pulse tube heat engine

Details Pulse tube heat engine Pulse tube heat engine

1992-10-14

1995-07-25

Look, Edward K.

Power plants

Motor operated by expansion and/or contraction of a unit of...

Unit of mass is a gas which is heated or cooled in one of a...

62 6, 62467, F25B 900

Patent

active

054351367

ABSTRACT:
A pulse tube refrigerator includes a compression space defined by a compression piston inside a cylinder, an expansion space defined by an expansion piston inside a cylinder, the expansion piston being reciprocated at an advance angle of a constant phase difference within a range of 10.degree.-45.degree. relative to the compression piston, and first and second thermal systems communicating the compression and expansion spaces. Each thermal system has a radiator, a regenerator, a cold head and a pulse tube, with the regenerator of the second thermal system being composed of two regenerator sections. The cold head of the first thermal system is made to perform a heat exchange with the second thermal system between the two regenerator sections thereof, whereby a very low temperature is obtained from the cold head of the second thermal system.

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patent: 4717405 (1988-01-01), Budliger
patent: 5172554 (1992-12-01), Swift et al.
patent: 5269147 (1993-12-01), Ishizaki et al.
patent: 5275002 (1994-01-01), Inoue et al.
Inoue, Low Temperature Engineering, vol. 26, No. 2, 1991, pp. 98-107. "Current State of Research of Pulse-Tube Refrigerators".
Radebaugh, Advances in Cryogenic Engineering, vol. 35, 1990, pp. 1191-1205.
Radebaugh, et al., Fourth International Cryocooler Conference, 1987, pp. 119-133. "Refrigeration Efficiency of Pulse-Tube Refrigerators".
Matsubara, et al., The 5th International Cryocooler Conference, pp. 127-135. "Alternative Methods of the Orifice Pulse Tube Refrigerator".
Kasuya, et al., Cryogenics, vol. 31, No. 9, 1991, pp. 786-790. "Work and heat flows in a pulse-tube refrigerator".

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