Thermo-economic analysis of a novel regasification system with liquefied-natural-gas cold-energy

2019 ◽  
Vol 101 ◽  
pp. 218-229
Author(s):  
Lee Yoon-Ho
Keyword(s):  
Natural Gas ◽  
Economic Analysis ◽  
Liquefied Natural Gas ◽  
Cold Energy

scholarly journals Liquid Air as an Energy Carrier for Liquefied Natural Gas Cold Energy Distribution in Cold Storage Systems

Energies ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 272
Author(s):  
Sanghyun Che ◽  
Juwon Kim ◽  
Daejun Chang
Keyword(s):  
Supply Chain ◽  
Natural Gas ◽  
Economic Analysis ◽  
Cold Storage ◽  
Storage System ◽  
Operating Time ◽  
Liquefied Natural Gas ◽  
Coefficient Of Performance ◽  
Refrigeration System ◽  
Cold Energy

Liquid air can be employed as a carrier of cold energy obtained from liquefied natural gas (LNG) and surplus electricity. This study evaluates the potential of liquid air as a distributed source with a supply chain for a cold storage system using liquid air. Energy storing and distributing processes are conceptually designed and evaluated considering both the thermodynamic and economic aspects. Further, the proposed supply chain is compared with a conventional NH3/CO2 cascade refrigeration system. The thermodynamic analysis demonstrates that the exergy efficiency and the coefficient of performance of the proposed supply chain are 22% and 0.56, respectively. Economic analysis is based on a life cycle cost (LCC) evaluation. From the economic analysis, the liquid air production cost and the LCC of a liquid air cold storage system (LACS) are estimated to be 40.4 USD/ton and 34.2 MMUSD, respectively. The LCC is reduced by 19% in the LACS compared with the conventional refrigeration system. The proposed supply chain is economically feasible, although its thermodynamic performances are lower than those of the conventional system. The sensitivity analysis indicates that LNG mass flow rate in the air liquefaction system and the cold storage operating time are dominant parameters affecting the economic performance.

Study on solidification of carbon dioxide using cold energy of liquefied natural gas

2000 ◽  
Vol 29 (4) ◽  
pp. 249-268 ◽  
Author(s):  
Yoshiyuki Takeuchi ◽  
Shogo Hironaka ◽  
Yutaka Shimada ◽  
Kenji Tokumasa
Keyword(s):  
Carbon Dioxide ◽  
Natural Gas ◽  
Liquefied Natural Gas ◽  
Cold Energy

Process Analysis of Hydrogen Storage in the Hydrate Form by Utilization of Liquefied Natural Gas Cold Energy

2012 ◽  
Vol 433-440 ◽  
pp. 215-220 ◽  
Author(s):  
Hong Jun Yang ◽  
Shuan Shi Fan ◽  
Xue Mei Lang ◽  
Yan Hong Wang
Keyword(s):  
Natural Gas ◽  
Hydrogen Storage ◽  
Process Analysis ◽  
Liquefied Natural Gas ◽  
Storage Process ◽  
Adsorption Method ◽  
Hydrate Form ◽  
Cold Energy ◽  
Pressure Swing ◽  
Ice Powder

A process of hydrogen storage in the form of hydrate by utilization of liquefied natural gas(LNG) cold energy was proposed. Hydrogen was recovered from exhaust gas by pressure swing adsorption method, and formed gas hydrate with ice powder under a pressure of 35 MPa and a temperature of 140 K. The process analysis was carried out with partially numerical simulation by Aspen Plus and theoretical calculation. The results show that the energy consumption of hydrogen stored in the hydrate form is 12058 kJ/(kg.H2) and of this hydrogen storage process, the ratio of spent energy to stored energy is 0.10 , which is superior to the most of the other method. The research indicated that if there is cold energy with low temperature available, hydrogen stored in the hydrate form is a method of feasible and energy-efficient.

Exergoeconomic optimization of a novel multigeneration system driven by geothermal heat source and liquefied natural gas cold energy recovery

2019 ◽  
Vol 209 ◽  
pp. 550-571 ◽  
Author(s):  
Towhid Parikhani ◽  
Towhid Gholizadeh ◽  
Hadi Ghaebi ◽  
Seyed Mohammad Sattari Sadat ◽  
Mehrdad Sarabi
Keyword(s):  
Natural Gas ◽  
Heat Source ◽  
Energy Recovery ◽  
Liquefied Natural Gas ◽  
Geothermal Heat ◽  
Cold Energy

scholarly journals Progress of liquefied natural gas cold energy utilization

2019 ◽  
Vol 502 ◽  
pp. 012148 ◽  
Author(s):  
L N Guo ◽  
B L An ◽  
L B Chen ◽  
J X Chen ◽  
J J Wang ◽  
...  
Keyword(s):  
Natural Gas ◽  
Liquefied Natural Gas ◽  
Energy Utilization ◽  
Cold Energy

scholarly journals Techno Economic Evaluation of Cold Energy from Malaysian Liquefied Natural Gas Regasification Terminals

Energies ◽  
2019 ◽  
Vol 12 (23) ◽  
pp. 4475 ◽  
Author(s):  
Mohd Amin Abd Majid ◽  
Hamdan Haji Ya ◽  
Othman Mamat ◽  
Shuhaimi Mahadzir
Keyword(s):  
Natural Gas ◽  
Liquefied Natural Gas ◽  
Economic Feasibility ◽  
Rate Of Return ◽  
Internal Rate Of Return ◽  
Economic Study ◽  
Cold Energy ◽  
Set Up ◽  
Liquid Natural Gas ◽  
Project Life

In order to cater for increased demand for natural gas (NG) by the industry, Malaysia is required to import liquid natural gas (LNG). This is done through PETRONAS GAS Sdn Bhd. For LNG regasification, two regasification terminals have been set up, one in Sungai Udang Melaka (RGTSU) and another at Pengerang Johor (RGTPJ). RGTSU started operation in 2013 while RGTPJ began operation in 2017. The capacities of RGTSU and RGTPJ are 3.8 (500 mmscfd) and 3.5 (490 mmscfd) MTPA, respectively. RGTSU is an offshore plant and uses an intermediate-fluid-vaporization (IFV) process for regasification. RGTPJ is an onshore plant and employs open-rack vaporization (ORV). It is known that a substantial amount of cold energy is released during the regasification process. However, neither plant captures the cold energy released during regasification. This techno economic study serves to evaluate the technical and economic feasibility of the cold energy available during regasification. It was estimated that approximately 47,214 and 88,383 kWh of cold energy could be generated daily at RGTPJ and RGTSU, respectively, during regasification processes. Converting this energy into RTh at 70% thermal efficiency, and taking the commercial rate of 0.549 Sen per RTh, for the 20-year project life, an internal rate of return (IRR) of up to 33% and 17% was estimated for RGTPJ and for RGTSU, respectively.

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