Thermodynamic oscillator with average pressure control

Details Thermodynamic oscillator with average pressure control Thermodynamic oscillator with average pressure control

F - Mech Eng,Light,Heat,Weapons

28

D

60/36

F28D 17/00 (2006.01) F02G 1/05 (2006.01) F25B 9/14 (2006.01)

Patent

CA 1234993

PHN.10.716 23 ABSTRACT: A thermodynamic oscillator having a displacer (5) and a piston (3) (further displacer) movable due to pressure fluctuations at the resonance frequency of the oscillator. The displacer (5) and the piston (3) are located in a working space (11,15) which is filled with working medium and can be connected through a release valve (51,125,167) and a supply valve (53,129,169), res- pectively, to a single reservoir (55) filled with working medium with an increase and a decrease, respectively, of the ambient temperature with respect to a nominal temper- ature. The valves (51,53,125,129,167,169) have an open- ing pressure which is a function of the ambient temper- ature. The average pressure and the resonance frequency of the oscillator can thus be stabilized at a variable ambient temperature. The oscillator can be operated as a cold-gas engine, a hot-gas engine (motor), a heat pump or a current generator.

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