Brayton Cycle Baseload Power Tower
Wilson Solarpower, under the Baseload CSP FOA, is validating a proposed utility-scale, Brayton cycle baseload power tower system with a capacity factor of at least 75% and LCOE of $0.09/kWh.
Wilson is developing, building, testing, and evaluating two prototype components—an unpressurized thermal storage system and an unpressurized solar receiver—as well as a full Brayton cycle system that includes these components. The goal of the project is to identify an optimally sized, Brayton cycle baseload power tower system module of at least 100 kilowatt electrical and to evaluate a single-system module.
This project takes a modular approach to CSP power towers using a small Brayton cycle turbine power block that could be shipped to a worksite. Key components include:
- A high temperature ceramic turbine (50% efficiency)
- A 97.5%-efficient, high-temperature (1200°C), rotary regenerative, ceramic heat exchanger
- An unpressurized solar receiver.
These three items compose the transportable power block. Additional development is possible with an unpressurized thermal energy storage system using dry filler material such as alumina.
Quarterly Progress Reports