DUAL ENERGY SOLAR THERMAL POWER PLANT

摘要

A design of a dual energy solar thermal power plant is proposed. It can be built on a piece of land where sunshine is abundant and the moisture in the air is relatively low. The desert corridor starting at Las Vegas and to the south is the best in the whole U.S. The power plant design is simple, using the equipment and material commonly available at reasonable costs. No particularly complicated equipment and material are required. The optimized plant size will be one MVA up to 300 MVA depending on the available land size in acres. The transmission line voltage can be from 13.8 kV up to 230 kV, depending on the MVA capacity. The land for a plant can be up to 600 acres.

主权项

1. A dual energy solar thermal power plant having a rated output power from 1 MVA (mega Volt-Ampere) to 300 MVA range comprising: dual energy sources being solar energy and natural gas having a solar energy collector comprising:
a. a solar collector to collect solar energy; b. an auxiliary boiler/steam superheater supplementing the solar collector to provide needed power to drive a turbine-generator set to generate electrical power; c. a low temperature turbine for a lower temperature operation for the solar collector than a nuclear or a coal power plant can provide, wherein the low temperature turbine has a required minimum steam temperature to drive a low temperature turbine of less than 680° F., or 360° C.; d. an insulated piping system connecting the solar collectors to the low temperature turbine; e. a temperature sensor; f. valves; g. a fluid circulating pump system; h. a heat exchanger; i. two pressurizers; j. a heat transfer fluid storage tank k. an auxiliary boiler/steam superheater; l. a turbine-generator; m. a synchronizer; a deaerator; n. a condensate pump; o. a condenser; p. a feed pump; q. a switchgear; r. a stepup transformer; s. an auxiliary transformer t. a high voltage circuit breaker; u. a switchyard, and v. an outgoing high voltage power line; wherein the dual energy solar thermal power plant provides a complete system from receiving solar power to providing electrical power output to an outside power grid with voltages of 13.8 kV, 22 kV, 69 kV, 115 kV, and 230 kV for the proposed MVA outputs from the generator.