Development and application of screw expander in natural gas pressure energy recovery at city gas station

Diao, Anna; Wang, Yuli; Guo, Yi; Ma, Feng

doi:10.1016/j.applthermaleng.2018.07.018

Cited by 32 publications

(10 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Yang et al [164] developed a MVR system employing a water-injected SSC and found that water injection can lead to a significant increase in evaporation capacity, pressure ratio, and specific moisture extraction rate. Some scholars investigated the performance of screw machines used in the process of natural gas delivery and use, such as the TSE for pressure energy recovery in the pressure reduction process [165][166][167], the SSC for natural gas liquefaction process [112,168], and the TSC for coal seam gas compression [169]. Most of these screw machines were of the oilinjected type, while Diao et al [165] introduced an oil-free TSE to recover pressure energy at a city gas station for the first time and its actual isentropic efficiency was about 70% at all tested operating conditions.…”

Section: Other Popular Applicationsmentioning

confidence: 99%

“…Some scholars investigated the performance of screw machines used in the process of natural gas delivery and use, such as the TSE for pressure energy recovery in the pressure reduction process [165][166][167], the SSC for natural gas liquefaction process [112,168], and the TSC for coal seam gas compression [169]. Most of these screw machines were of the oilinjected type, while Diao et al [165] introduced an oil-free TSE to recover pressure energy at a city gas station for the first time and its actual isentropic efficiency was about 70% at all tested operating conditions. In addition to these applications, Indice et al [170][171][172] and Li et al [173][174][175][176], and Habibi et al [177] proposed some innovative solar electricity generation systems with TSEs using water as working fluid, but these researches are limited to theoretical analysis.…”

Section: Other Popular Applicationsmentioning

confidence: 99%

See 1 more Smart Citation

A Review of Recent Research and Application Progress in Screw Machines

Wang

Liu

et al. 2022

Machines

View full text Add to dashboard Cite

Screw machines, mainly including single-screw type and twin-screw type, have gone through significant development and improvement during the past decade. This paper reviews the relevant studies available in the open literature for acquiring insight into and to establish the state of the art of the research and application status of screw machines. The related research on different aspects, which would affect the performance and reliability of screw machines includes rotor profile and geometric characteristics, thermodynamic modelling, vibration and noise, lubrication and wear, control of capacity and built-in volume ratio, and liquid injection technology. In the aspect of thermodynamic modelling, the available methods, i.e., empirical or semi-empirical model, lump model, and 3D CFD model, adopted for the performance prediction and optimal design of screw machines are summarized. Then, the review covers the application status of screw machines in the fields of air compression and expansion, refrigeration and heat pump, organic Rankine cycle (ORC), and other popular applications, with an emphasis on the reported performance and progress in technologies of screw machines. Finally, conclusions and perspectives for future research in the area of screw machines are presented. The review provides readers with a good understanding of the research focus and progress in the field of screw machines.

show abstract

Section: Other Popular Applicationsmentioning

confidence: 99%

Section: Other Popular Applicationsmentioning

confidence: 99%

A Review of Recent Research and Application Progress in Screw Machines

Wang

Liu

et al. 2022

Machines

View full text Add to dashboard Cite

show abstract

“…As an effective method to achieve energy-saving, pressure energy recovery has been widely considered in recent years, with applications including gas pressure reduction stations, air conditioning systems, fuel cells, heat pumps, steam pipes, etc. − Additionally, the research and application of gas pressure energy recovery has been more frequent. Usually, the gas pressure regulating station uses a throttling valve or a pressure control valve to reduce the gas pressure in the transmission pipeline and to convey it to the user.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Off-Design Performance Analysis of a Screw Expander-Based Steam Pressure Energy Recovery System in a Combined Heat and Power Unit

et al. 2021

ACS Omega

View full text Add to dashboard Cite

A screw expander-based heating system is proposed based on a 330 MW combined heat and power unit to recover the extraction steam pressure energy. EBSILON Professional software was applied to model the proposed system, and the thermal performance of the traditional system and the new system was compared under different operating conditions. The results show that under the designed heating condition, the standard coal consumption rate of the new system is reduced by 4.74 g/kWh, and the exergy efficiency of the heating process is increased by 17.29%. When the extraction steam pressure changes with the load within a range greater than 0.1 MPa, there is an optimal operating range for the new system, which is related to the built-in pressure ratio of the screw expander and the extraction steam pressure difference, and the distribution of the optimal operating range varies with the supply-water temperature. The heating process exergy efficiency of the two systems shows opposite trends under off-design conditions. Additionally, under the condition of meeting the extraction steam pressure, the method for increasing the output power of the screw expander by adjusting the butterfly valve to increase the extraction steam pressure only increases the standard coal consumption rate of the system. Furthermore, through an application case study, the annual economic benefit of the new system is expected to be ¥ 4.15 million, and the payback period is 5.02 years.

show abstract

“…He also reported that the power output of the turboexpander strongly depends on the NG flowrate, temperature, and pressure. Some studies also dealt with the expander-depending NG pressure regulation configuration [20] and screw expander [21], which can regulate the NG pressure and harvest the pressure energy as well. With a multi-objective optimization model, Cascio et al [22] integrated electrical, thermal, and NG grids in which the main system consisted of a retrofitted NG CGS where a turboexpander was employed for energy harvesting from the process.…”

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

View full text Add to dashboard Cite

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.

show abstract

Development and application of screw expander in natural gas pressure energy recovery at city gas station

Cited by 32 publications

References 7 publications

A Review of Recent Research and Application Progress in Screw Machines

A Review of Recent Research and Application Progress in Screw Machines

Modeling and Off-Design Performance Analysis of a Screw Expander-Based Steam Pressure Energy Recovery System in a Combined Heat and Power Unit

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

Contact Info

Product

Resources

About