Article
Thermodynamics
Jinwoo Park, Haneul Mun, Junghwan Kim, Inkyu Lee
Summary: The study proposes an advanced natural gas liquefaction process utilizing liquid air, which improves efficiency, reduces costs, and enhances sustainability by incorporating cold energy recovery.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Thermodynamics
Patrik Furda, Miroslav Variny, Zuzana Labovska
Summary: This study employs a genetic algorithm to optimize an LNG plant, achieving cost reduction and carbon dioxide emission reduction while increasing calculation speed and optimization effectiveness. The optimization behavior of process parameters is also analyzed, revealing that only a few parameters underwent significant changes, which provides insights for future optimization studies.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Engineering, Chemical
Fernando Almeida-Trasvina, Robin Smith, Megan Jobson
Summary: This paper demonstrates that structurally modifying the configuration of SMR cycles can yield significant savings in shaft work demand with low added complexity, based on a case study for natural gas liquefaction at small scale. The results show that the novel SMR cycle achieves 10% savings in shaft work demand compared to the PRICO SMR cycle, showcasing its potential for enhancing energy efficiency in LNG production.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Energy & Fuels
David Serrato, Juan Zapata-Mina, Alvaro Restrepo, Jorge Torres
Summary: Cusiana and Cupiagua fields account for 51% of Colombia's natural gas production, but reserves are expected to decline by 2023, leading to supply-demand imbalance. Innovative strategies, like LNG technologies, are needed to ensure energy security. However, careful evaluation of supply and demand, as well as technical feasibility, is crucial for successful implementation.
Article
Chemistry, Multidisciplinary
Ajinkya Pal, Easa Al-musleh, Iftekhar A. Karimi
Summary: LNG has been recognized globally as a cleaner and more efficient energy source compared to other fossil fuels, with the cold section being the most energy-intensive part of a typical LNG plant. This study focuses on developing an energy self-sustaining model for the cold section of a conventional LNG plant, utilizing waste streams to power gas turbines and proposing structural changes to reduce energy requirements and increase LNG production. The findings show that these structural improvements not only lower total power usage by 4.83% and increase LNG output by 0.48%, but also further reduce specific power consumption by 5.52%.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Thermodynamics
Wei Jiang, Jingyu Kan, Baocan Dong, Xingxun Li, Xiaohui Wang, Chun Deng, Bei Liu, Qingping Li, Changyu Sun, Guangjin Chen
Summary: This study focuses on the depressurization exploitation of hydrate coupled with recovered gas liquefaction. The results show that the energy efficiency decreases significantly after recovered gas liquefaction, suggesting that lower energy consumption storage process should be prioritized or the energy consumption should be optimized.
Article
Engineering, Environmental
Hua Shang, Xinran Zhang, Xiaomin Li, Feifei Zhang, Xuan Tang, Jinping Li, Jiangfeng Yang
Summary: This study investigates the purification of methane from a gas mixture using MIL-100(Cr) as a sorbent and proposes a vacuum-pressure swing adsorption (VPSA) process assisted by N2 displacement. The results show that the N2 displacement process has no effect on the purity of CH4, but excessive displacement time leads to a decrease in CH4 purity.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Thermodynamics
Sajedeh Rooholamini, Bahram Ghorbani, Armin Ebrahimi
Summary: This paper develops a novel integrated system for co-generation of LNG and hot water using a two-stage ejector refrigeration system and low-temperature organic Rankine cycle, aiming to reduce energy consumption. The use of ejector refrigeration systems as an alternative to compression refrigeration cycles in the integrated structure is investigated. By eliminating equipment in compression refrigeration systems, the high energy consumption in these units is reduced in the novel integrated structure design.
APPLIED THERMAL ENGINEERING
(2021)
Article
Energy & Fuels
Xueyuan Long, Qian Huang, Yuan Tian, Lingyan Mu
Summary: In this study, a mathematical model for the supersonic condensate flow of natural gas has been proposed to understand its condensation process in a supersonic separator. It was found that the condensation position moves forward with an increase in inlet pressure and a decrease in inlet temperature. A method for determining the optimal range of operating parameters for the supersonic separator was introduced.
Article
Energy & Fuels
Xin Wang, Jingyuan Xu, Zhanghua Wu, Ercang Luo
Summary: This paper proposes a novel multi-stage thermoacoustic refrigerator capable of cascade liquefaction of natural gas. By reducing irreversible losses and achieving smaller temperature drops through a multiple-bypass expansion cooling configuration, the proposed system improves the liquefaction efficiency compared to conventional single-stage systems.
Article
Engineering, Environmental
Fabrizio Innocenti, Rod Robinson, Tom Gardiner, Neil Howes, Nigel Yarrow
Summary: This study measures methane emissions from onshore LNG facilities and regasification facilities in different regions. The approach used is to quantify emissions from key functional elements (FEs) at each facility, which are spatially separable areas related to different identified processes. The study presents a comprehensive data set showing the potential of methane reduction and improving inventory accuracy with a larger sample size. The benefits of obtaining data with this level of granularity include comparing emissions of similar FEs on different plants and identifying and quantifying emissions from noncontinuous sources and superemitters for more accurate reporting and targeted maintenance and repair. The methane losses at the regasification and liquefaction facilities were 0.018% and 0.070% of throughput, respectively.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Thermodynamics
Qihui Hu, Weiguang Shan, Wei Zhang, Yuxing Li, Wuchang Wang, Jianlu Zhu, Yonghao Liu, Bin Xie, Xichong Yu
Summary: A small-scale natural gas liquefaction device was built to verify the feasibility of the dual nitrogen expansion natural gas liquefaction process. A genetic algorithm was used to optimize operational parameters, and the process performance and adaptability were evaluated. Experimental results showed a relative error within 10% and a relatively large processing capacity.
Article
Green & Sustainable Science & Technology
Ali Palizdar, Ali Vatani
Summary: This research proposes a novel system for natural gas liquefaction that utilizes the high-pressure exergy of pipeline gas, along with helium recovery and innovative carbon dioxide capturing and liquefaction. The system co-produces LNG, liquid helium, and liquid CO2 products with low energy consumption, simplicity, and high profitability. The proposed system shows a desirable performance with potential for improvement, as well as appropriate profitability.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Chemistry, Physical
S. Effendy, M. J. Purdue, S. Farooq
Summary: The study compares the conventional nitrogen removal unit with an optimized pressure vacuum swing adsorption (PVSA) process model, showing that PVSA has higher tolerance in removing N-2, making the entire natural gas upgrading process more profitable.
ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY
(2021)
Article
Thermodynamics
Yurim Kim, Jaewon Lee, Nahyeon An, Junghwan Kim
Summary: This study proposes advanced natural gas liquefaction and regasification processes using an LNG supply chain with cryogenic CO2 capture and storage (CCS) to solve three significant problems associated with conventional LNG supply chains. The cryogenic CCS process reduces the efficiency penalty of power generation, solid CO2 from cryogenic CCS is used as an additional cold source in the natural gas liquefaction process, and the LNG supply chain with cryogenic CCS minimizes sustained energy waste between the liquefaction and regasification stages. The findings provide environmentally friendly design guidelines for various LNG processes.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Thermodynamics
Bahram Ghorbani, Sohrab Zendehboudi, Zahra Alizadeh Afrouzi
Summary: Global energy consumption is rapidly increasing, resulting in the depletion of traditional energy sources and a significant rise in greenhouse gas emissions. It is crucial to utilize sustainable energy sources and innovative approaches to mitigate CO2 emissions. This study proposes a novel hybrid structure for hydrogen production and storage with zero CO2 emissions. The design incorporates a high-temperature fuel cell for CO2 reduction and the generation of heat and power for hydrogen production and liquefaction. The hybrid configuration employs electro-thermochemical units, molten carbonate fuel cells, hydrogen liquefaction processes, and biogas upgrading technologies. Meta-heuristic algorithms and artificial intelligence are developed to optimize investment return period and energy/exergy efficiencies. Fuzzy Bellman-Zadeh, LINMAP, and TOPSIS techniques are used for decision-making in multi-objective optimization. The proposed configuration produces 108 kmol/h of liquid hydrogen, 18.88 MW power, 54 kmol/h of oxygen, and 3258 kmol/h of hot water. Performance evaluations based on pinch, sensitivity, exergy, and economic assessments show thermal efficiency of 78.21% and exergy efficiency of 64.83%. The largest portions of exergy destruction come from the fuel cells-gas turbine hybrid system (63.63%), electro-thermochemical unit (25.96%), and biogas upgrading technology (6.23%). The return period on investment, prime price of electricity, and net benefit are computed as 4.854 years, 0.0420 US$/kWh, and 15.73 million US$/years, respectively, using the energy potentials of Newfoundland and Labrador, Canada.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Environmental Sciences
Y. Shamsaei, M. Amidpour, H. A. Ozgoli, A. Hajiseyed Mirzahosseini, A. F. Sotudeh
Summary: This study investigates the technical-economic performance of a gas-fired power plant with a simulated carbon capture unit in an oil refinery. The current condition of the power plant is analyzed using mathematical relations and software, and a post-combustion method is used to simulate the carbon capture unit. The use of exhaust steam from the deaerator as required steam helps reduce utility consumption, and changes in the unit pressure profile, removal of a pump, and initial investment result in reduced operating costs. The Carbon Capture unit effectively reduces carbon dioxide emissions from 138.06 to 1.51 million tons/year, but it also decreases efficiency from 76.282 to 60.480% due to electricity consumption. The study suggests using excess steam from the power plant as a heat source to increase overall efficiency, leading to a potential increase in efficiency from 60.480 to 71.639%.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Thermodynamics
Bahram Ghorbani, Milad Sadeghzadeh, Mohammad Hossein Ahmadi, Mohsen Sharifpur
Summary: This study presents a novel approach to cogenerate liquid carbon dioxide and liquefied natural gas using air for energy storage and production. The integration of mixed refrigeration cycle, liquid air cold energy recovery, carbon dioxide liquefaction cycle, and combined cooling and power cycle enhances the system's output performance. Solar parabolic trough collectors are used to assist power production. Sensitivity analysis demonstrates the effect of pressure in liquid air and outlet temperature of the solar collector exchanger on specific energy and exergy efficiency.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Energy & Fuels
Bahram Ghorbani, Mohammad Hasan Khoshgoftar Manesh, Armin Ebrahimi
Summary: The increase in global energy consumption has led to international commitments to replace fossil fuels and reduce environmental consequences. To address the imbalance between renewable energy production and usage, this study proposes an innovative process configuration for the generation of liquid hydrogen. The proposed hybrid configuration shows lower energy consumption and higher efficiency compared to similar studies in this field.
Article
Green & Sustainable Science & Technology
Bahram Ghorbani, Sohrab Zendehboudi, Zahra Alizadeh Afrouzi
Summary: In this research, an innovative hybrid system for portable hydrogen storage and power generation with zero CO2 emission through liquefied natural gas (LNG) regasification is developed, which utilizes the heat loss for the thermo-electrochemical unit and pre-cooling the hydrogen liquefaction system. The system shows promising results in terms of energy efficiency, net annual profit, and reduced irreversibility.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Energy & Fuels
Matin Karbasioun, Afshin Gholamalipour, Nasser Safaie, Rasool Shirazizadeh, Majid Amidpour
Summary: This study proposes a novel framework to model the energy system transition in fossil-fuel-rich countries and assess the techno-economic and environmental impacts of various policies. The results show that improving fossil fuel technologies received the highest score, indicating the inevitability of enhancing the efficiency of the current energy system. Implementing water-efficient renewable technologies is also crucial, considering Iran's water shortage.
Review
Green & Sustainable Science & Technology
Mahsa Sedighi, Peiman Pourmoghaddam Qhazvini, Majid Amidpour
Summary: Environmental pollution, global warming, and limited natural resources are challenges faced by the built environment. The application of bioactive elements on buildings' facades can positively impact factors such as thermal comfort, energy efficiency, wastewater treatment, and CO2 capture. Integration of photobioreactors (PBRs) in buildings can meet thermal needs and result in energy savings up to 30% through reduced heating, cooling, ventilation, and lighting loads. Algae-integrated buildings can also sequester CO2, contributing to pollution control and sustainable development.
Article
Green & Sustainable Science & Technology
S. A. Mousavi Rabeti, M. H. Khoshgoftar Manesh, M. Amidpour
Summary: Renewable energy-based polygeneration energy systems can improve the environment and reduce emissions while providing various products. This study proposes a novel polygeneration system that utilizes biomass and solar energy to produce power, heat, freshwater, and hydrogen through different cycles and processes.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2023)
Review
Chemistry, Multidisciplinary
Bahram Ghorbani, Sohrab Zendehboudi, Noori M. Cata Saady, Xili Duan, Talib M. Albayati
Summary: The main challenges of liquid hydrogen storage include high energy consumption, low efficiency, high expenses, and gas losses. This article reviews various approaches to improving H-2 liquefaction methods and discusses the economic, safety, and environmental aspects of these techniques. It also presents standards and codes for H-2 liquefaction technologies and investigates the current status and future potentials. Cost-efficient H-2 liquefaction systems have higher production rates, higher efficiency, lower energy consumption, and lower investment costs. The use of waste heat and renewable energy for precooling is more efficient than power generation cycles.
Article
Energy & Fuels
Mohammad Ali Moradi, Mohsen Salimi, Majid Amidpour
Summary: The study focuses on re-evaluating the electrification plan of agricultural wells in Iran to achieve sustainable and smart agriculture sector. An environmental energy analysis model is used to develop possible scenarios for policy-making until 2041. A bottom-up end-use analysis model is employed to evaluate the cost-benefits of electrification, and the superior scenario of an energy efficiency package is proposed. By integrating electrification and intelligent monitoring, the research suggests using solar and wind energy as a sustainable solution, which can save energy and reduce greenhouse gas emissions by 2041.
Article
Engineering, Environmental
Ruru Meng, Jun Lyu, Yang Lu, Mohsen Salimi, Bo Zhu, Daniel K. Macharia, Lisha Zhang, Majid Amidpour, Liming Zou, Zhigang Chen
Summary: This study reports the growth of phosphomolybdate-carbon hybrid nanorod arrays on carbon-fiber cloth for constructing an efficient salt-free hanging evaporator. The optimized CFc/PMo12-C with nanorods exhibited increased photo-absorption and decreased water-evaporation enthalpy, resulting in efficient continuous seawater evaporation.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Green & Sustainable Science & Technology
Seyed Alireza Mousavi Rabeti, Mohammad Hasan Khoshgoftar Manesh, Majid Amidpour
Summary: A polygeneration system for producing power, freshwater, and methanol using solar and waste resources is defined in this study. By utilizing waste heat recovery and CO2 capture technologies, power and methanol production are achieved. Optimization algorithms are used to improve system performance, and the results show that the Multi-objective Salp Swarm Algorithm is the most efficient. The system achieves an energy efficiency of 29.25% and an exergy efficiency of 23.59%.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Green & Sustainable Science & Technology
Mohsen Salimi, Majid Amidpour, Mohammad Ali Moradi, Marjan Hajivand, Ebrahim Siahkamari, Mehrzad Shams
Summary: Steam is widely used in industrial plants as a heat transfer medium. This study simulated the steam systems of a natural gas processing plant and analyzed the amount of water loss to identify solutions for improvement. Through modeling and economic evaluation, it was found that these improvement solutions have feasible investment return periods.
Article
Engineering, Multidisciplinary
Farnaz Montazerifar, Majid Amidpour, Zahra Abedi
Summary: This study investigates the performance of multi-stream plate-fin heat exchangers with a novel design of fractal shape fins and a new structure. The results show that increasing the angle of attack of fractal fins improves flow deflection and fluid mixing, while increasing Reynolds number enhances vortex effects. Adding solid nanoparticles to the fluid enhances heat transfer efficiency but increases pressure loss. Overall, the study introduces new insights into the design and optimization of plate heat exchangers. Rating: 8/10.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Mehdi Tafazoli, Mohsen Salimi, Saeed Zeinalidanaloo, Javad Mashayekh, Majid Amidpour
Summary: The use of solar trackers can increase electricity production in photovoltaic power plants. This article compares the electricity produced by fixed and tracking structures in different cities of Iran. Software modeling and techno-economic analysis were conducted to evaluate different sun tracking scenarios and the decision-making for constructing such power plants in Iran. It is found that using east-west detectors has a positive effect on increasing power production, especially in summer. However, the economic viability of this technology depends on other economic factors.
