Power producing system employing geothermally heated fluid

A method of producing power comprising the steps of:

• providing a constant supply of geothermally heated fluid having a quantity of dissolved inorganic salts;
• supplying the geothermally heated fluid to a first direct contact heat exchanger;
• supplying a working fluid of a type substantially insoluble in a fluid containing dissolved inorganic salts to said first direct contact heat exchanger, the geothermally heated fluid vaporizing said working fluid;
• delivering the vaporous working fluid to a prime mover wherein the working fluid is expanded to drive said prime mover;
• directing the expanded working fluid exhausted from said prime mover to a second direct contact heat exchanger;
• supplying a relatively cold heat exchange medium comprising a liquid salt solution to said second direct contact heat exchanger to condense said working fluid;
• and
• supplying said condensed working fluid to said first direct contact heat exchanger for reuse in the cycle.

In a method of generating power having a quantity of inorganic salts dissolved therein by employing geothermally heated fluid, the improvement comprising the steps of:

• supplying a working fluid of a type substantially insoluble in a fluid containing dissolved inorganic salts into direct contact with said geothermally heated fluid to vaporize the working fluid;
• expanding the working fluid through a prime mover to generate power;
• and
• directing the expanded working fluid into direct contact with a relatively cold heat exchange medium comprising a liquid salt solution to condense said working fluid.