Optimizing natural gas reciprocating expansion engines for Town Border pressure reduction stations based on AGA8 equation of state

Farzaneh–Gord, Mahmood; Izadi, Soheil; Deymi–Dashtebayaz, Mahdi; Pishbin, Seyed Iman; Sheikhani, Hamideh

doi:10.1016/j.jngse.2015.05.025

Cited by 21 publications

(2 citation statements)

References 25 publications

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“…Zabihi and Taghizadeh [25] simulated a CGS with a nominal capacity of 120,000 SCMH using HYSYS software for energy harvesting by turboexpanders and concluded that the pressure energy of NG lost during regulation was 7.1 GWh, and the annual turboexpander electricity production was computed to be 3.2 GWh. The reciprocating expansion engines were also proposed by Farzaneh-Gord et al [26] as well for energy harvesting from the pressure reduction process in TBS. After a comprehensive survey in scientific repositories, however, Tesla turbines are still missed from being a candidate for energy harvesting tools in CGS/TBS, and hence, it became the motivation of this study to check its capability in the sought specific application.…”

Section: Introductionmentioning

confidence: 99%

Energy Harvesting by a Novel Substitution for Expansion Valves: Special Focus on City Gate Stations of High-Pressure Natural Gas Pipelines

2020

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A countless amount of energy has been wasted in all kinds of expansion valves (EV) in industries. In fact, EVs, including regulators, throttling valves, capillary tubes, etc., have been used to intentionally reduce the potential of carrier fluid. City gate stations (CGS) have been recognized as one of the important points with high potential for energy harvesting due to its function for regulating natural gas (NG) pressure by EV. In this study, Tesla turbine (TT) is introduced as a new candidate for substitution of EV, particularly those that have been employed in CGS on high-pressure NG pipelines, as well as those applications in which high-potential fluid must be reduced to a low-potential state to form a complete thermodynamic cycle or to be used at end-user equipment. Although harvesting energy is one of the hottest fields of science and engineering, there are few traces of research on using a TT as an alternative for EVs, even for the industries possessing high-pressure lines. This numerical experiment intends to show the capability of TT as a robust candidate for substituting regulation valves through investigating thermohydrodynamic characteristics of the turbulent high-pressure compressible NG flow through a TT under different operation conditions. This study, with the objective of managing the exploitation of resources, can be considered as one step forward toward reinforcing economic and environmental pillars of sustainable development. It is also found that the generated power by TT can support the 285 7W LED simultaneously, or it is equivalent to 84.4 m2 area of the solar panel (150 W, 15.42% efficiency) for the climate condition of Toronto, Canada.

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Section: Introductionmentioning

confidence: 99%

Energy Harvesting by a Novel Substitution for Expansion Valves: Special Focus on City Gate Stations of High-Pressure Natural Gas Pipelines

2020

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“…They found that the expander was able to achieve an isentropic efficiency of about 60% working with expansion ratio of 2. Some works deal with the optimization of reciprocating piston expanders using exergy analysis in energy recovery applications in natural pressure reduction stations [13,14]. They all suggest that this expansion system could have a high potential in the proposed application.…”

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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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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Energetic, exergetic, environmental and economic assessment of a novel control system for indirect heaters in natural gas city gate stations

Ebrahimi‐Moghadam

Deymi–Dashtebayaz

Jafari

et al. 2020

J Therm Anal Calorim

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Optimizing natural gas reciprocating expansion engines for Town Border pressure reduction stations based on AGA8 equation of state

Cited by 21 publications

References 25 publications

Energy Harvesting by a Novel Substitution for Expansion Valves: Special Focus on City Gate Stations of High-Pressure Natural Gas Pipelines

Energy Harvesting by a Novel Substitution for Expansion Valves: Special Focus on City Gate Stations of High-Pressure Natural Gas Pipelines

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

Energetic, exergetic, environmental and economic assessment of a novel control system for indirect heaters in natural gas city gate stations

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