2017Unpublished venueRequires access

Exergy extraction of LNG while regasification

Jenny Kottarathil James

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Abstract

Liquefied natural gas (LNG) is increasingly being selected as the favorite fuel of choice in power generation and industrial applications due to its high-energy content and low amount of greenhouse emissions by comparison with other fossil fuels. LNG contains high amount of exergy available within that is wasted during conventional LNG regasification methods. Proposed modifications analyzed in this project to a natural gas combined cycle power plant hopes to extract the available exergy and also make the LNG regasification process selfsustainable. Addition of a propane loop and chilled water condenser for heat recovery steam generator system will increase the work output of the combined cycle power plant by 1.5%. Furthermore with an innovative layout of the LNG, natural gas combustion, propane and steam cycles will prove to eliminate conventional LNG regasification energy costs.

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What this paper is about

Liquefied natural gas (LNG) is increasingly being selected as the favorite fuel of choice in power generation and industrial applications due to its high-energy content and low amount of greenhouse emissions by comparison with other fossil fuels. LNG contains high amount of exergy available within that is wasted during conventional LNG regasification methods. Proposed modifications analyzed in this project to a natural gas combined cycle power plant hopes to extract the available exergy and also make the LNG regasification process selfsustainable. Addition of a propane loop and chilled water condenser for heat recovery steam generator system will increase the work output of the combined cycle power plant by 1.5%. Furthermore with an innovative layout of the LNG, natural gas combustion, propane and steam cycles will prove to eliminate conventional LNG regasification energy costs.

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Available abstract

Liquefied natural gas (LNG) is increasingly being selected as the favorite fuel of choice in power generation and industrial applications due to its high-energy content and low amount of greenhouse emissions by comparison with other fossil fuels. LNG contains high amount of exergy available within that is wasted during conventional LNG regasification methods. Proposed modifications analyzed in this project to a natural gas combined cycle power plant hopes to extract the available exergy and also make the LNG regasification process selfsustainable. Addition of a propane loop and chilled water condenser for heat recovery steam generator system will increase the work output of the combined cycle power plant by 1.5%. Furthermore with an innovative layout of the LNG, natural gas combustion, propane and steam cycles will prove to eliminate conventional LNG regasification energy costs.

Key concepts: Exergy, Liquefied natural gas, Waste management, Environmental science, Natural gas, Engineering, Power station, Combined cycle

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