A binary-flashing geothermal power plant

A novel type of binary geothermal installation is analyzed. It would increase the work obtained by more than 20%. This installation utilizes partial evaporation of the secondary fluid and flashing of the remaining liquid. Freon, ammonia and isobutane are examined as secondary fluids for the new installation. They all yield superior thermodynamic performance with respect to a conventional binary unit because the binary-flashing installation optimizes two parameters rather than one only. It also appears that the new installation is economically advantageous over existing installations.