Power cycle working with a mixture of substances

Details Power cycle working with a mixture of substances Power cycle working with a mixture of substances

F - Mech Eng,Light,Heat,Weapons

01

K

60/42

F01K 25/06 (2006.01) F01K 23/04 (2006.01)

Patent

CA 1283784

A B S T R A C T A power cycle to operate with maximum temperature above 300°C, working with a mixture of water and another substance having lower volatility, greater molecular weight and tendency to superheat in the isentropic expan sion. Both substances are vaporized in a boiler, in part at variable tem- perature, and expanded in at least one turbomachine. After the first ex- pansion, a heat yielding takes place at constant pressure, wherein part of the least volatile substance condenses at variable temperature. In compa- rison with the steam cycle, this new cycle offers higher efficiencies be- cause it has, among others, the advantage of increasing the average tempe- rature of heat absorption, without intermediate reheating and without con- densation occurring in the turbine until very low exhaust pressures are reached, depending on the proportion of the mixture used. It also facili- tates, in the case of combining with a secondary cycle of refrigerant fluid, the superheating of this fluid, which is especially useful in the case of fluids with wet expansion.

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