Geothermal power plant and condenser therefor
AssigneeOrmat Industries Ltd.
InventorLucien Y. Bronicki
Life of this patent
Estimating the term…
Abstract
A geothermal power plant operating on geothermal fluid includes a source of low pressure geothermal steam, and a turbo-generator including a low pressure steam turbine to which the geothermal steam is applied, and a generator coupled to the steam turbine. The low pressure geothermal steam is applied to the turbine, wherein expansion takes place driving the generator, and producing expanded steam that is exhausted from the turbine. A condenser for condensing the expanded steam includes a steam heat exchanger for receiving the expanded steam, a coolant, an air cooled heat exchanger, and a pump to exchange coolant during the steam heat exchanger and the air cooled heat exchanger, in a closed secondary coolant cycle. Preferably, the coolant is water.
Claims16
A geothermal power plant operating on geothermal fluid comprising:
- (a) a source of low pressure geothermal steam derived from said fluid;
- (b) a turbo-generator including a low pressure steam turbine coupled to a generator;
- (c) means for applying steam from said source to said turbine wherein expansion of the steam takes place driving the generator which produces electricity, and producing expanded steam;
- (d) a condenser for condensing said expanded steam;
- and
- (e) said condenser including a steam heat exchanger for receiving said expanded steam, a coolant in the form of water, an indirect-contact air-cooled heat exchanger, and a pump operable to effect the exchange of coolant between said steam heat exchanger and said air cooled heat exchanger in a closed coolant loop.
A geothermal power plant operating on geothermal fluid comprising:
- (a) a source of geothermal steam derived from said fluid;
- (b) a turbo-generator including a steam turbine coupled to a generator, said turbo-generator being responsive to said steam for producing electricity and expanded steam;
- (c) a condenser for condensing said expanded steam;
- and
- (d) said condenser including a steam heat exchanger for receiving said expanded steam, an indirect-contact air-cooled heat exchanger containing a coolant in the form of water, and a pump operable to effect the exchange of coolant between said steam heat exchanger and said air cooled heat exchanger in a closed coolant loop.
A condenser comprising:
- a) a source of expanded steam;
- and
- b) a steam heat exchanger for receiving said expanded steam;
- c) an indirect-contact air-cooled heat exchanger containing a coolant in the form of water;
- and
- d) a pump operable to effect the exchange of coolant between said steam heat exchanger and said air cooled heat exchanger in a closed coolant loop.
A geothermal power plant operating on geothermal fluid comprising:
- (a) a source of low pressure geothermal steam derived form said fluid;
- (b) a turbo-generator including a low pressure steam turbine coupled to a generator;
- (c) means for applying steam from said source to said turbine wherein expansion of the steam takes place driving the generator which produces electricity, and producing expanded steam;
- (d) a condenser for condensing said expanded steam;
- and
- (e) said condenser including a steam heat exchanger for receiving said expanded steam, water coolant, an air-cooled heat exchanger, and a pump operable to effect the exchange of coolant between said steam heat exchanger and said air cooled heat exchanger in a closed loop;
- and
- (f) means for selectively adding anti-freeze to said coolant.
Dependencies are inferred from the claim text.