Power plants – Motive fluid energized by externally applied heat – Power system involving change of state
Patent
1977-11-07
1979-05-29
Michalsky, Gerald A.
Power plants
Motive fluid energized by externally applied heat
Power system involving change of state
60676, 60690, F01K 2500
Patent
active
041563433
ABSTRACT:
A power generating assembly in which a portion of the heat energy in a stream of fluid such as warm or hot air is extracted and transformed to rotary power as a body of low boiling liquid is recirculated through a closed path. Vapor of the liquid liquifies when subjected to a pressure greater than a first pressure and a temperature lower than a first temperature. The vapor is superheated by the heat energy above-identified to a high pressure at which it actuates a reciprocating mechanism to produce rotary power. Vapor discharging from the reciprocating mechanism is allowed to expand adiabatically in a first confined space, and be cooled. A compressor draws vapor from the first confined space and discharges the same into a second confined space at a pressure greater than the first pressure. The temperature of the vapor in the second confined space is lowered below that of the first temperature whereupon the vapor assumes the liquid form. The liquid discharges sequentially through an expansion valve into a pre-heater in the second confined space to transform to vapor. The heat necessary for the vaporization of liquid in the pre-heater is withdrawn from the vapor in the second confined space, and this withdrawn heat lowering the temperature of the vapor in the second confined space below the first temperature. Vapor flows from the pre-heater to a boiler where it is super heated to a desired high pressure prior to discharge to the reciprocating mechanism. Heat for the boiler is from the stream of fluid previously identified.
Babcock William C.
Michalsky Gerald A.
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