Enhanced structure and optimal capacity sizing method for turbo-expander based microgrid with simultaneous recovery of cooling and electrical energy

Ghanaee, Reza; Foroud, Asghar Akbari

doi:10.1016/j.energy.2018.12.163

Cited by 8 publications

(2 citation statements)

References 23 publications

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“…(2) Coupling (e.g., [18]) heat pumps with the turboexpander electric generator to invest part of the electricity generated by recovery for preheating. (3) Utilizing the cold thermal energy available at the end of the expansion process for industrial or domestic users [19] or as a cold source for power plants [20]. (4) Using cogenerative (CHP) internal combustion engines (ICEs) to supply the thermal power output for gas preheating and produce an additional electric power output [21].…”

Section: Introductionmentioning

confidence: 99%

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Thermodynamic and Economic Feasibility of Energy Recovery from Pressure Reduction Stations in Natural Gas Distribution Networks

2020

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A big amount of the pressure energy content in the natural gas distribution networks is wasted in throttling valves of pressure reduction stations (PRSs). Just a few energy recovery systems are currently installed in PRSs and are mostly composed of radial turboexpanders coupled with cogeneration internal combustion engines or gas-fired heaters providing the necessary preheating. This paper clarifies the reason for the scarce diffusion of energy recovery systems in PRSs and provides guidelines about the most feasible energy recovery technologies. Nine thousand PRSs are monitored and allocated into 12 classes, featuring different expansion ratios and available power. The focus is on PRSs with 1-to-20 expansion ratio and 1-to-500 kW available power. Three kinds of expanders are proposed in combination with different preheating systems based on boilers, heat pumps, or cogeneration engines. The goal is to identify, for each class, the most feasible combination by looking at the minimum payback period and maximum net present value. Results show that small size volumetric expanders with low expansion ratios and coupled with gas-fired heaters have the highest potential for large-scale deployment of energy recovery from PRSs. Moreover, the total recoverable energy using the feasible recovery systems is approximately 15% of the available energy.

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Section: Introductionmentioning

confidence: 99%

“…In any case, the electricity generated by the expander-generator can be sent to the grid, used for preheating, or stored in the gas network as hydrogen [19,22,23].…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic and Economic Feasibility of Energy Recovery from Pressure Reduction Stations in Natural Gas Distribution Networks

2020

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Design and management of stand-alone turbo-expander-based microgrid with considering the uncertainty of input natural gas

Ghanaee

Foroud²

2023

J Braz. Soc. Mech. Sci. Eng.

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Proposal and thermo-economic analysis of a comprehensive framework for energy recovery and emission reduction in natural gas depressurization stations

Hadidi

2024

Energy Reports

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Enhanced structure and optimal capacity sizing method for turbo-expander based microgrid with simultaneous recovery of cooling and electrical energy

Cited by 8 publications

References 23 publications

Thermodynamic and Economic Feasibility of Energy Recovery from Pressure Reduction Stations in Natural Gas Distribution Networks

Thermodynamic and Economic Feasibility of Energy Recovery from Pressure Reduction Stations in Natural Gas Distribution Networks

Design and management of stand-alone turbo-expander-based microgrid with considering the uncertainty of input natural gas

Proposal and thermo-economic analysis of a comprehensive framework for energy recovery and emission reduction in natural gas depressurization stations

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