Power generation system and method
AssigneeNanyang Technological University
InventorsFei Duan, Swapnil Dubey, Fook Hoong Choo, Lu Qiu, Kai Wang
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Abstract
A power generation system comprising: a liquefied natural gas (LNG) regasification unit configured to perform a regasification process to regasify LNG supplied from an LNG source to produce natural gas, the regasification process producing cold energy; a gas turbine configured to combust the natural gas to output power, the combusting producing an exhaust gas; a thermal storage unit configured to store heat obtained from the exhaust gas; and a Stirling engine configured to output power, the Stirling engine having a hot end heated by the heat stored in the thermal storage unit and a cold end cooled by the cold energy from the regasification process.
Claims9
A power generation system comprising:
- a liquefied natural gas (LNG) regasification unit configured to perform a regasification process to regasify LNG supplied from an LNG source to produce natural gas, the regasification process producing cold energy;
- a gas turbine configured to combust the natural gas to output power, the combusting producing an exhaust gas;
- a thermal storage unit comprising at least one phase change material configured to store heat obtained from the exhaust gas;
- and
- a Stirling engine configured to output power, the Stirling engine having a hot end heated by the heat stored in the thermal storage unit and operating around a melting temperature of the at least one phase change material and a cold end cooled by the cold energy from the regasification process,
- wherein a heat exchanger of the regasification unit is embedded with the cold end of the Stirling engine.
A method of power generation, the method comprising the steps of:
- (a) regasifiying LNG in a regasification process to produce natural gas, the regasification process producing cold energy;
- (b) combusting the natural gas in a gas turbine to output power, the combusting producing an exhaust gas;
- (c) storing heat obtained from the exhaust gas in at least one phase change material in a thermal storage unit;
- and
- (d) heating a hot end of a Stirling engine with the heat stored in the thermal storage unit, the hot end of the Stirling engine operating around a melting temperature of the at least one phase change material, and cooling a cold end of the Stirling engine with cold energy from the regasification process to output power with the Stirling engine, wherein a heat exchanger of a regasification unit performing step (a) is embedded with the cold end of the Stirling engine.
Dependencies are inferred from the claim text.