초록 ▼

A power cycle operating with a maximum temperature above 300°C. The power cycle operates with a working fluid comprising a mixture of water and another substance having lower volatility, greater molecular weight and tendency to superheat in isentropic expansion. Both substances are vaporized in a bo

A power cycle operating with a maximum temperature above 300°C. The power cycle operates with a working fluid comprising a mixture of water and another substance having lower volatility, greater molecular weight and tendency to superheat in isentropic expansion. Both substances are vaporized in a boiler, in part at variable temperature, and expanded in at least one turbomachine. After the first expansion, heat is yielded at constant pressure, wherein part of the least volatile substance condenses at variable temperature. In comparison with a steam cycle, this new cycle offers higher efficiences because it has the advantage of increasing the average temperature of heat absorption, without intermediate reheating and without condensation occurring in the turbine until very low exhaust pressures are reached, depending on the proportion of the mixture used. A secondary cycle of refrigerant fluid may be utilized with the power cycle of the present invention.

대표청구항 ▼

A power cycle which utilizes a working fluid comprising a mixture of water and a second substance, the second substance having a lower volatility, a molecular weight greater than water and the ability to superheat in isentropic expansion, comprising: (a) vaporizing the working fluid at maximum cycle

A power cycle which utilizes a working fluid comprising a mixture of water and a second substance, the second substance having a lower volatility, a molecular weight greater than water and the ability to superheat in isentropic expansion, comprising: (a) vaporizing the working fluid at maximum cycle pressure and variable temperature with heat from an external energy source; (b) expanding the working fluid at least once from the maximum cycle pressure to a lower pressure; (c) cooling the expanded working fluid at variable temperature and constant pressure less than the maximum cycle pressure to condense at least part of the second fluid as a first condensate and produce heat; (d) condensing the expanded working fluid to produce a second condensate; (e) pumping the first and second condensate up to the maximum cycle pressure; (f) heating the first and second condensate with the heat from step c; and, (g) recycling the first and second condensate to step a.