scholarly journals Modelling and optimization of a natural gas supply system at a transient stage: a case study of China

BMC Energy ◽  
2019 ◽  
Vol 1 (1) ◽  
Author(s):  
Tianxiao Li ◽  
Pei Liu ◽  
Zheng Li
Keyword(s):  
Natural Gas ◽  
Supply System ◽  
Transient Stage ◽  
Modelling And Optimization ◽  
Gas Supply

Research of pressure influence in the gas supply system on the energy consuption level of gas devices

2019 ◽  
Vol 6 (2) ◽  
pp. 56-63
Author(s):  
L. D. Pylypiv ◽  
І. І. Maslanych
Keyword(s):  
Natural Gas ◽  
Residential Buildings ◽  
Supply System ◽  
Normal Operation ◽  
Gas Combustion ◽  
Efficient Operation ◽  
Gas Consumption ◽  
Natural Gas Combustion ◽  
Gas Supply

There are investigated the influence of operating pressures in the gas supply system on the level of such energy indicators as efficiency, gas flow and gas overrun by gas equipment in residential buildings. There is established a relationship between the values of operating pressures in the gas supply system and the gas consumption level of household appliances. The causes of insufficient pressure in the gas networks of settlements are analyzed in the article. There is also developed an algorithm for calculating the change in the efficiency of gas appliances depending on the operational parameters of the gas network. It has been found that the most efficient operation of gas appliances is observed at an overpressure at the inlet of gas appliances of about 1200 Pa.To ensure the required quality of natural gas combustion among consumers and minimize gas consumption there are justified the following measures in the article: coordinating a domestic regulatory framework for assessing the quality of natural gas with international norms and standards; improving the preparation of gas coming from local wells before supplying it to gas distribution networks; auditing low pressure gas pipelines and reconstructing areas affected by corrosion; ensuring standard gas pressure in the network for the normal operation of domestic gas appliances; stating quality indicators of natural gas combustion by gas sales organizations.

Concept and principles of building an integrated system of management of activities of regional gas supply system entities Kaliningrad region

2019 ◽  
pp. 64-72
Author(s):  
G.G. Arunyants
Keyword(s):  
Control System ◽  
Natural Gas ◽  
Supply System ◽  
Integrated System ◽  
Software Complex ◽  
Geographically Distributed ◽  
Basic Solutions ◽  
Kaliningrad Region ◽  
And Control ◽  
Gas Supply

The results of analysis of problems of regulation of gas supply complex of Kaliningrad region and main ways to increase its efficiency, as well as basic solutions for creation of a software complex Т-GAZ-2 automated calculation of natural gas tariffs for ACS of gas supply system subjects, geographically distributed and information connected to the regional automated information and control system (RAIS).

Developing natural-gas-supply security to mitigate distribution disruptions: A case study of the National Iranian Gas Company

2020 ◽  
Vol 254 ◽  
pp. 120066 ◽  
Author(s):  
Shaghayegh Khayat Basiri ◽  
Farzad Movahedi Sobhani ◽  
Seyed Jafar Sadjadi
Keyword(s):  
Natural Gas ◽  
Gas Supply

“A decision support approach for evaluating liquefied natural gas supply options: Implementation on Greek case study”

2019 ◽  
Vol 222 ◽  
pp. 414-423 ◽  
Author(s):  
Eleni Strantzali ◽  
Konstantinos Aravossis ◽  
Georgios A. Livanos ◽  
Christos Nikoloudis
Keyword(s):  
Decision Support ◽  
Natural Gas ◽  
Liquefied Natural Gas ◽  
Gas Supply

scholarly journals An Assessment of the Security of China’s Natural Gas Supply System Using Two Network Models

Energies ◽  
2015 ◽  
Vol 8 (12) ◽  
pp. 13710-13725 ◽  
Author(s):  
Mingqi Zhang ◽  
Meirong Su ◽  
Weiwei Lu ◽  
Chunhua Su
Keyword(s):  
Natural Gas ◽  
Network Models ◽  
Supply System ◽  
Gas Supply

scholarly journals The analysis of ways to ensure low emission (methane inclusive) from natural gas fuelled engines

2006 ◽  
Vol 125 (2) ◽  
pp. 58-66
Author(s):  
A. KHATCHIYAN ◽  
V. KUZNETSOV ◽  
I. SHISHLOV
Keyword(s):  
Natural Gas ◽  
Research Work ◽  
Supply System ◽  
Lean Mixture ◽  
Precise Control ◽  
Fuel Ratio ◽  
Low Emission ◽  
Partial Loads ◽  
Gas Supply

The results of research work on unsupercharged and turbocharged V-type engines with natural gas fuelling system have been presented in the paper. For lower emission the original gas supply system has been designed which ensures very proper control of air-fuel ratio in both cylinder banks. It was stated, that lowering the emission needs very precise control of gas-air ratio, application of lean mixture on partial loads, control of turbocharging and appropriate choice of converters with palladium catalytic coach.

scholarly journals Hold-Up Problems in International Gas Trade: A Case Study

Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4984
Author(s):  
Guych Nuryyev ◽  
Tomasz Korol ◽  
Ilia Tetin
Keyword(s):  
Natural Gas ◽  
Political Change ◽  
Mitigation Strategies ◽  
Supply Disruptions ◽  
Technical Issues ◽  
Number Of Parties ◽  
Gas Supply ◽  
Over Time

The infrastructure required for international natural gas trade is considerable, which often leads to hold-up problems and supply disruptions. This study discusses disruptions of gas supply from Algeria, Indonesia, Russia, and Turkmenistan since the early 1980s. The novelty of this study is its focus on the issues related to transit countries, which are rarely considered in the literature. The results of the study classify supply disruptions into six types, show the evolution of supply disruptions over time, and discuss mitigation strategies. The six types of disruptions include political change, price demands, debts, technical issues, transit fees, theft of gas. The evolution of the disruptions shows that the issues related to transit countries have become more frequent in the last two decades. Mitigation strategies tailored to transit countries include using an international organisation, designing contracts with price mechanisms that might reduce the possibility of disputes and reducing the number of parties involved in the trade.

scholarly journals Economic and mathematical model of selecting a gas supply system based on biomethane and natural gas

Vestnik MGSU ◽  
2021 ◽  
pp. 1388-1396
Author(s):  
Denis Yu. Suslov
Keyword(s):  
Mathematical Model ◽  
Natural Gas ◽  
Alternative Energy ◽  
Critical Length ◽  
Supply System ◽  
Gas Pipeline ◽  
Rational Use ◽  
Reduced Costs ◽  
Supply Systems ◽  
Gas Supply

Introduction. A promising direction in the development of gas supply systems, which is widely used in the developed countries of the world, is the use of an alternative energy source — biomethane. The effective use of biomethane requires the development of scientific provisions and recommendations for the use of biomethane gas supply systems, taking into account technical and economic factors. Therefore, it is urgent to develop an economic and mathematical model for choosing a gasification method and determining the area of rational use of gas supply systems with biomethane. Materials and methods. To develop an economic and mathematical model for choosing a method for gasification of settlements, methods of mathematical modeling and parametric optimization were used. The implementation of the economic and mathematical model was carried out in the Mathcad software package. Mathematical and graphic processing of the results obtained was carried out. Results. An economic and mathematical model was developed for determining the rational area of application of biome­thane for gas supply to settlements. The model is based on the technical and economic calculation of the reduced costs for gas supply systems with network natural gas and biomethane. Using the developed model, the technical parameters of the biomethane gas supply system were determined: the critical length of the gas pipeline branch, the radius of the biomethane plant, the biomethane consumption, the length of the gas pipeline for the biomethane supply, and the reduced costs to the gas supply system. A graph of the dependence of the critical length of the gas pipeline branch on the population size has been obtained, which makes it possible to determine the area of rational use of biomethane for gas supply to settlements. It was found that for a rural settlement with a population of 5,000 people, the critical length of the gas pipeline branch is 24.820–28.044 km, for an urban-type settlement with a population of 15,000 people, the length of the gas pipeline branch is 50.923–64.677 km, and for a city with a population of 30,000 people — 89.617–127.279 km. Conclusions. The results obtained can be used for the development and design of gas supply systems based on biomethane for the gasification of settlements remote from the main gas pipelines. The use of biomethane makes it possible to gasify settlements in developed agricultural regions and to increase the efficiency of the gas transportation system of the Russian Federation.

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