Analysis and efficiency enhancement for energy-saving re-liquefaction processes of boil-off gas without external refrigeration cycle on LNG carriers

Energy ◽  
2022 ◽  
Vol 239 ◽  
pp. 122082
Author(s):  
Jiang Bian ◽  
Jian Yang ◽  
Yang Liu ◽  
Yuxing Li ◽  
Xuewen Cao
Keyword(s):  
Energy Saving ◽  
Refrigeration Cycle ◽  
Efficiency Enhancement

Energy saving mechanism analysis of the absorption–compression hybrid refrigeration cycle

2013 ◽  
Vol 57 ◽  
pp. 43-50 ◽  
Author(s):  
Xuelin Meng ◽  
Danxing Zheng ◽  
Jianzhao Wang ◽  
Xinru Li
Keyword(s):  
Energy Saving ◽  
Refrigeration Cycle ◽  
Mechanism Analysis

Investigation on the Mechanism of Energy Saving and Efficiency Enhancement for Fluid Ejector

2011 ◽  
Vol 121-126 ◽  
pp. 2804-2808
Author(s):  
Gui Ju Xing ◽  
Zi Huan Li ◽  
Hong Liang Zheng ◽  
Jian Wang ◽  
Fu Sheng Jiang
Keyword(s):  
Theoretical Analysis ◽  
Energy Saving ◽  
Flow Rate ◽  
Water Flow Rate ◽  
Turbulent Energy ◽  
Energy Dissipation Rate ◽  
Rate Variation ◽  
Efficiency Enhancement ◽  
Pumping Power ◽  
Rate Condition

Experiments were implemented on a prototype commercial liquid ejector to measure its hydraulic efficiency and the change of which along with a certain range of water flow rate variation was also recorded. Based on theoretical analysis and numerical simulation methods, we improved the ejector’s structure by modifying the suction part of it. Four ameliorated ejector structures, with increased pumping power and reduced flow resistance compared to the prototype, are proposed. Under the same working flow rate condition, flow field computations were conducted on the prototype and the four improved structures. The computational results show that the pumping power increases by 75.97%, the drag coefficient reduces 0.0908, the maximum turbulent energy dissipation rate decreases by 38.88% and the absolute value of the efficiency increases by 13.66%. The work validates the correctness of the theoretical analysis about the mechanism of energy-saving and efficiency enhancement for fluid ejector, and provides a more effective method to improve the performance of liquid ejector.

scholarly journals Numerical investigation on the influences of swirling flow to thermal efficiency enhancement of an LPG-energy saving burner

2021 ◽  
Vol 28 ◽  
pp. 101466
Author(s):  
Anirut Matthujak ◽  
Mana Wichangarm ◽  
Thanarath Sriveerakul ◽  
Sedthawatt Sucharitpwatskul ◽  
Sutthisak Phongthanapanich
Keyword(s):  
Energy Saving ◽  
Numerical Investigation ◽  
Thermal Efficiency ◽  
Swirling Flow ◽  
Efficiency Enhancement

scholarly journals Efficiency of introduction of the energy management system in Russian industrial companies

2018 ◽  
Vol 4 (1) ◽  
pp. 119-137
Author(s):  
Veronika S. Gorbunova ◽  
Elena Yu. Puzina
Keyword(s):  
Energy Efficiency ◽  
Energy Saving ◽  
Energy Management ◽  
Management System ◽  
Large Scale ◽  
Management Systems ◽  
Energy Management System ◽  
Efficiency Enhancement ◽  
Energy Management Systems ◽  
Industrial Companies

Aim: The purpose of the study is to present an overview of national and international energy management systems and suggest activities to enhance the quality of the realisation of the energy management systems in Russian industrial companies. Methods: The authors have used the description of the energy saving and energy management systems directions under research, the analysis of the qualitative properties of the energy management systems in use, structural and functional method for the development of the general structure and stages of functioning of the energy management systems. Results: During the research, the authors have revealed the necessity to unify separate directions of the energy saving policies of Russia’s industrial companies into the energy management system that is a subsystem of the overall enterprise management, combining the company’s strategic goals, energy auditing, training personnel in energy saving and energy efficiency enhancement, energy resources recording system, the formation, realisation and monitoring of the energy saving programme, and automation of the energy saving and energy efficiency enhancement activities. Conclusion: The realisation of the suggested measures will enable forming the conditions for the transition to a large-scale implementation of the energy management system, that fosters the realisation of the state policy in energy saving and energy efficiency enhancement.

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