Evaluation of the Effects of Geothermal Reservoir Fluid Temperature on the Costs of Steam Production and Power Generation Page: 4 of 17
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This report provides a preliminary evaluation of the
effect of reservoir temperatures on the cost of geothermal hot
water wells and flash-steam gathering systems to support a 50,000
kW power plant. Comparisons are made of the capital investments
required for each case and the corresponding payout period based
on steam costs of 6 mill/kWh of power generated.
In order to show how the reservoir temperatures and steam
cost affect the cost of electric power delivered to the high ten-
sion bus at the power plant, capital costs estimates were prepared
and economic analyses made to determine the cost of electric
power for each corresponding case.
A. STEAM PRODUCTION FACILITIES
In order to determine the cost of the steam production
facilities, it was first necessary to establish the basic design
and steam requirements for the power plant.
A two-stage steam flash concept was employed for
geothermal hot water reservoir temperatures above 3500 F. in
order to optimize hot water usage and minimize geothermal well
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Evaluation of the Effects of Geothermal Reservoir Fluid Temperature on the Costs of Steam Production and Power Generation, report, April 1, 1973; United States. (https://digital.library.unt.edu/ark:/67531/metadc892006/m1/4/: accessed March 22, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.