Lng cold power generation using mixed working fluid

Abstract

LNG cold power generator includes: a working fluid including carbon dioxide and ethane; a pump; an evaporator; a turbine; and a condenser. A molar ratio of the carbon dioxide and the ethane is 85˜95:15:0.5. The working fluid is used in a closed Rankine cycle. A supply pressure of supplied LNG is adjusted to a pressure at which it becomes a saturated liquid. A temperature at an outlet of the condenser is adjusted to a saturated vapor temperature of LNG. A pressure at an outlet of the pump is adjusted to a critical pressure of a mixed working fluid. The cycle includes two turbines and a heater provided therebetween. The heater heats the working fluid to prevent condensation thereof.

Dependencies are inferred from the claim text.