Preheating of fluid in a supercritical Brayton cycle power generation system at cold startup
| DWPI Title: Supercritical brayton cycle power generation system for providing electrical power to one or more mobile vehicles, has sensor is coupled to first piping that is operative to output temperature of fluid at inlet port of turbine |
| Abstract: Various technologies pertaining to causing fluid in a supercritical Brayton cycle power generation system to flow in a desired direction at cold startup of the system are described herein. A sensor is positioned at an inlet of a turbine, wherein the sensor is configured to output sensed temperatures of fluid at the inlet of the turbine. If the sensed temperature surpasses a predefined threshold, at least one operating parameter of the power generation system is altered. |
| Use: Supercritical brayton cycle power generation system for providing electrical power to one or more mobile vehicles such as ship, aircraft carrier, submarine or large airplane. |
| Advantage: The operating condition is controlled in a manner that allows the heater to preheat the fluid in the power generation system, thus decreasing the density of the fluid and allowing the turbine to act as a turbine rather than as a compressor. A particular type of union is employed to increase stability of flow in a desired direction by utilizing momentum from one fluid flow stream to pump fluid in the lower velocity or lower pressure stream. The motor is controlled to cause the compressor speed to increase, thus increasing power production by the turbine. |
| Novelty: The system (500) has a sensor (114) is coupled to the first piping (110) that is operative to output a temperature of the fluid at an inlet port (104A) of a turbine (104). A processor causes the first valve to be in an open position. The first valve's open position directs fluid exiting from a heater (112) and fluid exiting from the inlet of the turbine to the inlet port of a compressor (302), when the temperature output by the sensor is below the predefined threshold temperature. The fluid driving the turbine is a single-phase fluid. |
| Filed: 3/24/2011 |
| Application Number: US13070910A |
| Tech ID: SD 11916.0 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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