POWER PLANT

摘要

A binary power generation device is equipped with the flow path of a medium circulating through a heat exchanger, a turbine, a condenser, and a pump. A method for removing air that has intruded into the flow path of the medium includes: an air intrusion detection step of calculating, based on the pressure and temperature of a gas retaining portion communicatively connected to the flow path of the medium, a pressure threshold value obtained by adding the saturated vapor pressure of the medium and a margin value and of detecting, by comparing the pressure of a gas phase portion with the pressure threshold value, that air has intruded into the medium; a medium liquefaction step of producing a gas by pressurizing a mixed gas of the medium and air to reduce the amount of the medium in the mixed gas; and an exhaust step of exhausting the gas.

主权项

1. A power plant comprising:
a heat exchanger configured to exchange heat between a medium having a lower boiling point than water and a heat source to generate a medium gas; a turbine configured to receive a pressure of the medium gas supplied from the heat exchanger to rotate; an electric generator configured to be connected to the turbine; a condenser configured to cool the medium gas discharged from the turbine; a circulation pump configured to supply the medium discharged from the condenser to the heat exchanger; a medium flow path configured to pass through the heat exchanger, the turbine, the condenser, and the circulation pump; and an air removing device configured to remove an air intruding into the medium, the air removing device comprising: a gas retaining portion provided on an outlet side of the condenser and configured to retain a gas in the medium; a pressure gauge configured to measure a pressure in the gas retaining portion; a thermometer configured to measure a temperature in the gas retaining portion; a controller configured to calculate a pressure threshold value based on a saturated vapor pressure value of the medium calculated using the temperature of the thermometer, and compare a pressure value of the pressure gauge and the pressure threshold value to determine whether or not the air has intruded into the medium; and a release means configured to release the gas in the gas retaining portion in a case where it is determined that the air has intruded.