SIERRA PACIFIC UTILITY REPOWERING, FINAL TECHNICAL REPORT, 9/24/79-6/23/80, EXECUTIVE SUMMARY

by MCDONNELL DOUGLAS ASTRONAUTICS COMPANY,

Technical Report, 1980

Barcode

CSP Unique ID 190683131

Status

Electronic Resource

Call number

**Click on MARC view for more information on this report.**

Publication

DOE SF 10609 1; Report; June 1980.

Language

Library's review

ABSTRACT:
The Sierra Pacific Power Company (SPPCo.) participated with the McDonnell Douglas team to define a conceptual design for repowering their Ft. Churchill plant, Unit l. This unit has a modern, 110 MWe reheat turbine The boiler is fired by oil and natural gas. The unit is based loaded at
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0.78 capacity factor.

The Ft. Churchill site is located in high desert, 75 km (47 mi) southeast of Reno, Nevada. The estimated annual average insolation is 7.2 kWh/m2/day.

The repowered plant conceptual design was a molten salt receiver fluid and 6 hours storage capacity. A north field collector with 130° azimuth extent was found to be optimum. The partial cavity receiver combines both external and cavity absorber regions to provide a compact, highly efficient design. A two tank storage unit with external insulation buffers system operation and provides for extended operation. A four element, tube and shell heat exchanger produces steam for turbine operation.

The estimated annual average energy collection efficiency is 0.618. The plant annual energy output is about 290 GWhe, displacing the equivalent of 490,000 bbl oil per year.

Repowering was found to be close enough to breakeven, economically, to be very attractive. Legal and institutional barriers are minimal. As a result, a very aggressive repowering program including Ft. Churchill is recommended as a means for reducing dependence on foreign oil.
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