Pulsed heat engine for cooling devices

Details Pulsed heat engine for cooling devices Pulsed heat engine for cooling devices

1996-11-13

1998-03-03

Capossela, Ronald C.

Refrigeration

Gas compression, heat regeneration and expansion, e.g.,...

60520, 62 32, F25B 900

Patent

active

057222436

ABSTRACT:
A bi-directional Joule-Thomson device comprising two nearly identical heating containers which are connected via tubing to a cooling head. The cooling head is contained within a low temperature vacuum cryostat. Each of the small diameter tubes enters a chamber in the body of the cooling head. The chambers are connected by a small diameter orifice. Heat exchangers at ambient temperature and/or thermoelectric devices are used to cause the temperature of the gases entering and leaving the heating containers and cryostat to be at or near ambient. Within the cryostat, the small diameter tubes are thermally connected so that the cold gas flowing outward will cool the hotter incoming gas. The power for operation is supplied through two heating elements (one in each of the nearly identical heating vessels). This device will continue to perform at reduced power even if one of the heating elements fails.

REFERENCES:
patent: 5357757 (1994-10-01), Lucas
patent: 5385010 (1995-01-01), Horn
patent: 5398512 (1995-03-01), Inaguchi et al.
patent: 5481878 (1996-01-01), Shaowei

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