Techno-Economic Assessment of Turboexpander Application at Natural Gas Regulation Stations

Kuczyński, Szymon; Łaciak, M.; Olijnyk, Andrzej; Szurlej, A.; Włodek, T.

doi:10.3390/en12040755

Cited by 12 publications

(14 citation statements)

References 32 publications

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“…Kuczyński et al [115] focused on energy recovery in natural gas regulation stations by using suitable turboexpanders. In fact, natural gas regulation stations feature a significant energy dissipation, due to dissipative pressure reduction.…”

Section: Energy Efficiency In Industrymentioning

confidence: 99%

Toward an Efficient and Sustainable Use of Energy in Industries and Cities

et al. 2019

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Several countries have recently realized that the present development paradigm is not sustainable from an environmental and energy point of view. The growing awareness of the population regarding environmental issues is pushing governments worldwide more and more to promote policies aiming at limiting harmful effects of human development. In particular, the rapid increase of the global temperature, especially in the polar regions, and the management of human wastes, mainly plastic in seas, are some of the main points to be addressed by these novel policies. Several actions must be implemented in order to limit such issues. Unfortunately, the recent COP 24 Conference was not successful, but hopefully an agreement will be established in 2020 at the COP 26 Conference. The effort performed by policymakers must be mandatorily supported by the scientific community. In this framework, this paper aims at showing that countries worldwide are trying to negotiate an agreement to increase energy efficiency and reduce greenhouse gas (GHG) emissions. In addition, in this paper all the researchers reported can provide quantitative measures of the actions to be implemented in order to address a sustainable and efficient use of energy. Here, innovations in terms of novel efficient and environmentally friendly technologies mainly based on renewable energy sources have been also investigated. The study also highlights different sectors that have been involved for this aim, such as energy conversion systems, urban areas, mobility, sustainability, water management, social aspects, etc. In this framework, specific conferences are periodically organized in order to provide a forum for discussion regarding these topics. In this area the Sustainable Development of Energy, Water and Environment Systems (SDEWES) conference is the most ordinary conference. The 13th Sustainable Development of Energy, Water and Environment Systems Conference was held in Palermo, Italy in 2018. The current Special Issue of Energies, precisely dedicated to the 13th SDEWES Conference, is based on three main topics: energy policy and energy efficiency in urban areas, energy efficiency in industry and biomass and other miscellaneous energy systems.

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Section: Energy Efficiency In Industrymentioning

confidence: 99%

Toward an Efficient and Sustainable Use of Energy in Industries and Cities

et al. 2019

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“…[15][16] Kuczynski et al presented formula that allows a quick and easy evaluation of the applicability of an expander on the selected gas regulation station. 17 Olfati et al 18 presented the energy and exergy analyses of a pressure reduction station. They investigated various operating conditions for station inlet pressure and temperature and the modification on preheating natural gas was considered.…”

Section: Introductionmentioning

confidence: 99%

Exergy Analysis of a Turbo Expander: Modeling and Simulation

El-Husseiny¹,

Farouq

Farag³

et al. 2021

ACSi

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Natural gas is a mixture that is widely used in the industries. Knowledge of its thermodynamic properties is essential for evaluating the process and equipment performance. This paper quantifies the energy that can be extracted from natural gas using a turbo expander. Natural gases of wide-ranging compositions collected from 6 different gas fields in Egypt were investigated based on energy and exergy analysis. The study was conducted using MATLAB. Numerous simulation runs were made by taking various typical feed compositions classified as lean and rich. The effects of increasing the amount of C1, C5 in the feed stream on the efficiency of energy utilization are presented. A validation analysis was performed. The results show similar trends and good agreements. It was concluded from the results that when the concentration of methane in the gas mixture increase, the exergetic efficiency decreases. The results also show that the values of thermodynamic properties depend on the relative amount of heavy components in the feed stream.

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“…For instance, natural gas is transported at high pressure (40-100 bar) in pipelines but its pressure needs to be reduced (2-20 bar) for delivery in the Gas Regulation Stations (GRS) by means of valves. However, Kuczyński et al [2] shown that GRS are characterized by a wide range of parameters (e.g., pressure drop) and only some of them are suitable to replace the throttling valves with the turboexpander. Furthermore, boundary conditions such as irregular daily and seasonal temperatures make stringent conditions in using the turboexpander.…”

Section: Introductionmentioning

confidence: 99%

Fast Design Procedure for Turboexpanders in Pressure Energy Recovery Applications

et al. 2020

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Sustainable development can no longer neglect the growth of those technologies that look at the recovery of any energy waste in industrial processes. For example, in almost every industrial plant it happens that pressure energy is wasted in throttling devices for pressure and flow control needs. Clearly, the recovery of this wasted energy can be considered as an opportunity to reach not only a higher plant energy efficiency, but also the reduction of the plant Operating Expenditures (OpEx). In recent years, it is getting common to replace throttling valves with turbine-based systems (tuboexpander) thus getting both the pressure control and the energy recovery, for instance, producing electricity. However, the wide range of possible operating conditions, technical requirements and design constrains determine highly customized constructions of these turboexpanders. Furthermore, manufacturers are interested in tools enabling them to rapidly get the design of their products. For these reasons, in this work we propose an optimization design procedure, which is able to rapidly come to the design of the turboexpander taking into account all the fluid dynamic and technical requirements, considering the already obtained achievements of the scientific community in terms of theory, experiments and numeric. In order to validate the proposed methodology, the case of a single stage axial impulse turbine is considered. However, the methodology extension to other turbomachines is straightforward. Specifically, the design requirements were expressed in terms of maximum allowable expansion ratio and flow coefficient, while achieving at least a minimum assigned value of the turbine loading factor. Actually, it is an iterative procedure, carried out up to convergence, made of the following steps: (i) the different loss coefficients in the turbine are set-up in order to estimate its main geometric parameters by means of a one dimensional (1D) study; (ii) the 2D blade profiles are designed by means of an optimization algorithm based on a “viscous/inviscid interaction” technique; (iii) 3D Computational Fluid Dynamic (CFD) simulations are then carried out and the loss coefficients are computed and updated. Regarding the CFD simulations, a preliminary model assessment has been performed against a reference case, chosen in the literature. The above-mentioned procedure is implemented in such a way to speed up the convergence, coupling analytical integral models of the 1D/2D approach with accurate local solutions of the finite-volume 3D approach. The method is shown to be able to achieve consistent results, allowing the determination of a turbine design respectful of the requirements more than doubling the minimum required loading factor.

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Techno-Economic Assessment of Turboexpander Application at Natural Gas Regulation Stations

Cited by 12 publications

References 32 publications

Toward an Efficient and Sustainable Use of Energy in Industries and Cities

Toward an Efficient and Sustainable Use of Energy in Industries and Cities

Exergy Analysis of a Turbo Expander: Modeling and Simulation

Fast Design Procedure for Turboexpanders in Pressure Energy Recovery Applications

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