Double flash steam cycle model for a geothermal wellhead power plant

Abstract

The present invention relates to a method of addressing a challenge and utilize existing resource exhaustively, this invention optimizes the efficiency of the plant by introducing a second stage flashing that will produce low pressure steam. The low pressure steam will be used to run the gas extraction system leaving the high pressure steam to entirely run the high pressure. In cycle, the Wellhead power plants uses the steam from a single stage flashing of the geothermal fluid. The steam is used for power generation but part of it is used as motive steam for gas extraction system. The single well concept presents a new challenge where decline in output of wells results to a decline in plant power output. The excess of the low pressure steam will be used to run a low pressure turbine generating extra power. This will improve the overall energy that will be recovered from the well. The well discharge and steam venting vessel here in referred to as the silencer will also be modified to make it easy to maintain.