Patent ID: 7788924

Claim:
A method for reusing natural gas waste heat to produce electricity without additional BTU inputs, the method comprising: providing a systematic closed loop for circulating demineralized circulating water (DCW) in a consistent direction around said loop, said loop comprising a DCW pump, a natural gas heat exchanger fluidly coupled in-line to said DCW pump, a steam cycle heat exchanger fluidly coupled in-line to said natural gas heat exchanger, a flue gas heat exchanger fluidly coupled in-line to said steam cycle heat exchanger, a geothermal turbine and geothermal heat exchanger fluidly coupled in-line to said flue gas heat exchanger, a hydroelectric unit fluidly coupled in-line in between said geothermal turbine and said DCW pump; said DCW flowing from said DCW pump to said natural gas heat exchanger, wherein said natural gas heat exchanger cools said DCW; said cooled DCW flowing through said steam cycle heat exchanger and to said flue gas heat exchanger, wherein said cooled DCW is heated into DCW saturated steam, contributing heat to said DCW; said DCW saturated steam flowing to said geothermal turbine and heat exchanger, wherein said geothermal heat exchanger condenses said DCW saturated steam and heats a refrigerant, causing said heated refrigerant to flow through said geothermal turbine and generate electricity; said condensed DCW flowing to said hydroelectric unit and generating electricity; and said DCW flowing from said hydroelectric unit back to said DCW pump, wherein the geothermal generation and the hydroelectric generation are powered by waste heat from flue gas and waste heat from said steam cycle heat exchanger into said DCW, and wherein said systematic closed loop is free from additional fossil fuel input.