An Organic Rankine Cycle (ORC) Power Generation System Utilizing LNG Cold Energy and Dual-fuel Marine Engine Waste Heat
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United States of America Patent
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Issued Date -
Jul 25, 2024
app pub date -
Jul 2, 2019
filing date -
Oct 11, 2018
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Abstract
The present invention discloses an organic Rankine cycle (ORC) power generation system with a regenerator utilizing Liquefied Natural Gas (LNG) cold energy and industrial waste heat, the system comprising: an LNG regasification circuit, an ORC circuit, and an industrial waste heat circuit. The ORC circuit utilizes the cold energy released by the LNG regasification circuit and the heat energy dispersed by the industrial waste heat circuit. A bypass is set up in the ORC circuit to adjust the working medium flow rate via the expander to ensure efficient operation of the system. The invention improves the LNG cold energy recovery method based on the existing ORC cycle. The three-fluid heat exchanger and the regenerator could make full use of the cold energy provided by the LNG regasification process, reduce the thermal stress caused by the large temperature difference, alleviate the working load of the evaporator, and thus improve the heat to electricity conversion efficiency. The present invention is widely applicable in the fields of LNG cold power generation and industrial waste heat recovery.
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