scholarly journals Ship systems for natural gas liquefaction

Pomorstvo ◽  
2016 ◽  
Vol 30 (2) ◽  
pp. 105-112 ◽  
Author(s):  
Aleksandar Vorkapić ◽  
Predrag Kralj ◽  
Dean Bernečić
Keyword(s):  
Natural Gas ◽  
Liquefied Natural Gas ◽  
Liquid Form ◽  
Essential Requirement ◽  
Technological Processes ◽  
Natural Gas Liquefaction ◽  
Selection Of

This review describes the current liquefaction systems on ships for natural gas transportation in liquid form (Liquefied Natural Gas – LNG). Since in the construction of a gas carrier an essential requirement is the selection of a liquefaction system, this paper describes the principles of operation, thermal and technological processes, as well as the advantages of each system.

Application of Gas Turbine/Compressors in LNG Plants

1980 ◽  
Vol 102 (1) ◽  
pp. 132-135
Author(s):  
T. T. Brown ◽  
J. K. Hubbard
Keyword(s):  
Natural Gas ◽  
Gas Turbine ◽  
Liquefied Natural Gas ◽  
Gas Turbine Compressor ◽  
Selection Of

The objective of this paper is to discuss key considerations associated with selection of Gas Turbine Driven LNG (Liquefied Natural Gas) Turbo Compressors. The selection of any compressor and the ultimate performance is greatly affected by the gas turbine driver chosen. The selection of gas turbine/compressor packages is even more critical when the compressor is to operate on refrigeration service such as in an LNG plant. The selection, performance and operation will be discussed for complete gas turbine compressor packages.

scholarly journals SELECTING A LOCATION FOR A LIQUEFIED NATURAL GAS TERMINAL IN THE EASTERN BALTIC SEA

Transport ◽  
2014 ◽  
Vol 29 (1) ◽  
pp. 69-74 ◽  
Author(s):  
Vygantas Bagočius ◽  
Edmundas Kazimieras Zavadskas ◽  
Zenonas Turskis
Keyword(s):  
Natural Gas ◽  
Liquefied Natural Gas ◽  
Energy Market ◽  
Multi Criteria Decision Making ◽  
Objective Data ◽  
Construction Sites ◽  
Expert Opinions ◽  
The World ◽  
Criteria Weights ◽  
Selection Of

Liquefied Natural Gas (LNG) industry is among the fastest growing energy market sectors. The gas terminal in Klaipėda allows Lithuania to import natural gas from various countries around the world. One of the most debatable subjects is the location of the future terminal. The problem pertaining to selection of construction sites for the LNG terminal should be investigated and solved using the set of multiple conflicting criteria. Many researchers argue that similar problems should be solved by applying several different Multi-Criteria Decision-Making (MCDM) methods. The research presents the model for application of three different MCDM methods and aggregation of solution results for the problem, which is based both on different objective data and on investigation of expert opinions for determining subjective criteria weights for the problem.

scholarly journals Selection of Effective Thermal Insulation Materials for a Liquefied Natural Gas Tanks

2021 ◽  
Vol 2096 (1) ◽  
pp. 012049
Author(s):  
O N Medvedeva ◽  
S D Perevalov
Keyword(s):  
Natural Gas ◽  
Liquefied Natural Gas ◽  
Operating Conditions ◽  
Insulation Material ◽  
Optimal Thickness ◽  
Natural Gases ◽  
Insulation Materials ◽  
Technological Facility ◽  
Cryogenic Tanks ◽  
Selection Of

Abstract The object of the research is an isothermal tank container for storage and transportation of liquefied natural gases, which requires special operating conditions and is related to a technological facility of increased danger. The purpose of the study is to substantiate the type and thickness of the insulating material to reduce the losses of liquefied natural gas during storage and transportation. Based on the results of the analysis, effective insulation materials were selected for use in cryogenic tanks for isothermal storage of LNG, the optimal thickness of the insulation material was determined, which provides the required level of losses for gas evaporation.

scholarly journals Improved Configurations For Liquefied Natural Gas Cycles

2018 ◽  
Vol 1 (1) ◽  
pp. 19-37
Author(s):  
Said Al Rabadi
Keyword(s):  
Energy Consumption ◽  
Natural Gas ◽  
Energy Savings ◽  
Liquefied Natural Gas ◽  
Considerable Reduction ◽  
Total Energy Consumption ◽  
Power Efficient ◽  
Natural Gas Liquefaction ◽  
Important Challenge ◽  
Reduction Of Energy Consumption

The most important challenge in a natural gas liquefaction plant is to improve the plant energy efficiency. A process topology should be implemented, which results in a considerable reduction of energy consumption as the natural gas liquefaction process consumes a large amount of energy. In particular, system design focusing on configuring cold part cycle is an attractive option. In this study, various energy recovery-oriented process configurations and the potential improvements of energy savings for small- & midscale liquefied natural gas plants were proposed and compared with almost exclusively commercial trademarks processes. These improved simulation based investigations were validated under the variation in feed gas pressure, mixed refrigerant cooling reference temperature and the pinch temperature of cryogenic plate fin heat exchanger. The simulation results exhibited considerable reduction of specific total energy consumption. Therefore, the proposed liquefaction cycles have a simple topology, hence lower capital cost and compacter plant layout, which is compatible for power-efficient, offshore, floating liquefied natural gas liquefaction plants.

scholarly journals Tackling Dissipative Components Based on the SPECO Approach: A Cryogenic Heat Exchanger Used in Natural Gas Liquefaction

Energies ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6850
Author(s):  
Eduardo J. C. Cavalcanti ◽  
Monica Carvalho
Keyword(s):  
Natural Gas ◽  
Oil And Gas ◽  
Unit Cost ◽  
Liquefied Natural Gas ◽  
Exergy Destruction ◽  
Natural Gas Liquefaction ◽  
Cryogenic Process ◽  
Air Cooler ◽  
Liquefaction Process ◽  
Dissipative Components

The cryogenic industry has been experiencing continuous progress in recent years, primarily due to the global development of oil and gas activities. Natural gas liquefaction is a cryogenic process, with the refrigeration system being crucial to the overall process. The objective of the study presented herein is to carry out an exergoeconomic assessment for a dual nitrogen expander process used to liquefy natural gas, employing the SPecific Exergy COsting (SPECO) methodology. The air coolers and throttling valve are dissipative components, which present fictitious unit cost rates that are reallocated to the final product (Liquefied Natural Gas). The liquefaction process has an exergy efficiency of 41.89%, and the specific cost of liquefied natural gas is 292.30 US$/GJ. It was verified that this cost increased along with electricity. The highest exergy destruction rates were obtained for Expander 1 and Air cooler 2. The highest average cost per exergy unit of fuel was obtained for the vertical separator, followed by Air coolers 1 and 2. An assessment of the exergoeconomic factor indicated that both expanders could benefit from a decrease in exergy destruction, improving the exergoeconomic performance of the overall system. Regarding the relative cost difference, all compressors presented high values and can be enhanced with low efforts.

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