Thermal energy storage system coupled with thermal power cycle systems
AssigneeRondo Energy, Inc.
InventorsJohn Setel O'Donnell, Yusef Desjardins Ferhani
Life of this patent
Estimating the term…
Abstract
An energy storage system converts variable renewable electricity (VRE) to continuous heat at over 1000° C. Intermittent electrical energy heats a solid medium. Heat from the solid medium is delivered continuously on demand. Heat delivery via flowing gas establishes a thermocline which maintains high outlet temperature throughout discharge. The delivered heat which may be used for processes including power generation and cogeneration. In one application, the energy storage system provides higher-temperature heat to a conventional lower-temperature heat source to boost the temperature of a thermal power cycle working fluid to a turbine, thereby increasing efficiency of the power cycle.
Claims10
A power cycle fluid booster system for use with a high-pressure turbine, including:
- a thermal energy storage (TES) storage system including a TES medium configured to store thermal energy generated by conversion of input electrical energy from a renewable energy source,
- a thermal vapor compressor configured to combine a first power cycle working fluid at a first temperature and a first pressure from a heat source and with another working fluid at a second temperature and a second pressure heated by the TES, wherein the first temperature is less than the second temperature and the first pressure is less than the second pressure, and further configured to provide a combined first power cycle working fluid at an increased temperature and increased pressure as input to the high-pressure turbine configured to generate electrical energy and output the first power cycle working fluid at a lower pressure;
- and
- a heat exchanger configured to receive the output first power cycle working fluid to heat a second power cycle working fluid that is provided to a second turbine.
A power cycle fluid booster system for use with a high-pressure turbine, including:
- a thermal energy storage (TES) storage system including a TES medium configured to store thermal energy generated by conversion of input electrical energy from a renewable energy source,
- a thermal vapor compressor configured to combine a first power cycle working fluid at a first temperature and a first pressure from a heat source and with another working fluid at a second temperature and a second pressure heated by the TES, wherein the first temperature is less than the second temperature and the first pressure is less than the second pressure, and further configured to provide a combined first power cycle working fluid at an increased temperature and increased pressure as input to the high-pressure turbine configured to generate electrical energy and output the first power cycle working fluid at a lower pressure;
- and
- a heat exchanger configured to receive the output first power cycle working fluid to heat a second power cycle working fluid that is provided to a second turbine;
- wherein the heat source includes a heat exchanger configured to transfer heat from a geothermal fluid to the first power cycle working fluid.
A power cycle fluid booster system for use with a high-pressure turbine, including:
- a thermal energy storage (TES) storage system including a TES medium configured to store thermal energy generated by conversion of input electrical energy from a renewable energy source,
- a thermal vapor compressor configured to combine a first power cycle working fluid at a first temperature and a first pressure from a heat source and with another working fluid at a second temperature and a second pressure heated by the TES, wherein the first temperature is less than the second temperature and the first pressure is less than the second pressure, and further configured to provide a combined first power cycle working fluid at an increased temperature and increased pressure as input to the high-pressure turbine configured to generate electrical energy and output the first power cycle working fluid at a lower pressure;
- and
- a heat exchanger configured to receive the output first power cycle working fluid to heat a second power cycle working fluid that is provided to a second turbine;
- wherein the heat source of the first power cycle working fluid is exhaust from a furnace.
Dependencies are inferred from the claim text.