Review
Engineering, Chemical
Muhammad Haziq Noor Akashah, Nor Erniza Mohammad Rozali, Shuhaimi Mahadzir, Peng Yen Liew
Summary: Liquified natural gas (LNG) is a clean and popular primary energy source due to its long transportation distance. The cold energy stored in LNG can be utilized to enhance energy efficiency and economic viability of LNG supply chains. This review discusses current techniques and potential future applications of LNG cold energy utilization.
Article
Thermodynamics
Jie Pan, Mofan Li, Ran Li, Linghong Tang, Junhua Bai
Summary: A novel LNG cold energy cascade integrated utilization system is constructed in this paper, and the thermodynamic and economic analysis of the system is carried out. The system shows superior performance in both power output and revenue compared to the reference system.
APPLIED THERMAL ENGINEERING
(2022)
Article
Energy & Fuels
Z. F. Huang, Y. D. Wan, K. Y. Soh, M. R. Islam, K. J. Chua
Summary: In this study, a novel cold storage-based combined cooling and power system is designed to improve the efficiency and versatility of LNG cold energy utilization under fluctuating regasification rates. The system incorporates a CO2 based Rankine cycle and cooling recovery units, and utilizes waste heat from gas power plants as the heat source. The results show that the proposed system has improved power output and reduced downtime, as well as improved cold recovery rate, exergy efficiency, and reduced CO2 emissions.
Article
Thermodynamics
Muhammad Uzair Azhar, Mustafa Anwar, Uneeb Masood Khan, Muhammad Hassan, S. A. Muhammed Ali, Adeel Waqas, Mahendra Rao Somalu, Faisal Alresheedi
Summary: A multigeneration system that integrates solid oxide fuel cells with other systems is proposed to address high temperature exhaust emissions and increasing demand for power and utilities. The thermodynamic assessment shows that the system can generate electricity, heating, cooling, and fresh water efficiently. The parallel configuration provides flexibility in operation and a wider range of output power and utilities.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Engineering, Chemical
Hyeonchul Kim, Sieun Oh, Haneul Mun, Dongwoon Kim, Inkyu Lee
Summary: Efficient green energy technologies are crucial for sustainable green hydrogen applications, but economic reasons require bridging technologies between fossil fuels and green hydrogen. Natural gas, as the cleanest fossil fuel, can provide non-carbon containing energy resources like hydrogen and ammonia, making them suitable for economical energy storage and transportation as well as direct use as a fuel.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Multidisciplinary Sciences
Bhalchandra Shingan, P. Vijay, Karhikraja Pandian
Summary: The current study examines the potential of utilizing the cold energy stored in liquefied natural gas (LNG) for power generation. Analysis of four alternative systems combining the Rankine cycles (RC) and the direct expansion cycle (DEC) demonstrates that the efficiency and net power gain of power generation cycles can be substantially increased when DEC and RCs are combined. Sensitivity analysis reveals that the working fluid pressure, LNG mass flow rate, and turbine output pressure are crucial variables for achieving optimal outcomes. The economic study also confirms the viability of the suggested power system.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Thermodynamics
Sandeep Yadav, Srinivas Seethamraju, Rangan Banerjee
Summary: This study investigates the use of cold energy from LNG regasification to meet the cooling and electrical demands of a data center. A cogeneration system based on an ORC is proposed, which can fully satisfy the cooling requirement and generate power for the data center. The system achieves high energy and exergy efficiencies and has a low levelized cost of electricity and a high internal rate of return. It also leads to a significant reduction in CO2 emissions.
Article
Thermodynamics
Tianbiao He, Huigang Ma, Jie Ma, Ning Mao, Zuming Liu
Summary: The study investigated the impact of different factors on the performance of cryogenic organic Rankine cycle (ORC) systems, highlighting the significant influence of LNG vaporization pressure. Using R1270 and C2H6 as binary working fluids can significantly improve system performance.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Engineering, Chemical
Mohamed L. Elsayed, Sattam Alharbi, Louis C. Chow
Summary: A multigeneration system is proposed in this study for power, cooling, and freshwater production, which utilizes waste heat effectively to improve energy efficiency and reduce CO2 emissions. The system is optimized to reduce total unit product cost while achieving high performance in energy utilization and exergy efficiency.
Article
Thermodynamics
Alabas Hasan, Basheer Mugdadi, Moh'd A. Al-Nimr, Bourhan Tashtoush
Summary: This study examines the utilization of low-grade thermal energy to generate a cooling effect, providing a roadmap for air-conditioner designers to select economically viable solutions using waste heat or renewable energy. By establishing theoretical models and comparison criteria, it is found that under certain operating conditions, indirect cooling can outperform direct cooling in some scenarios.
Article
Energy & Fuels
Z. F. Huang, K. Y. Soh, M. R. Islam, K. J. Chua
Summary: This study proposes a combined cooling, heating, and power system that utilizes the heat and cold energies of liquefied natural gas. Through real-time optimization using a digital twin approach, the system achieves improved energy efficiency.
Article
Energy & Fuels
Rachid Klaimi, Sabla Y. Alnouri, Joseph Zeaiter, Mirko Stijepovic
Summary: This study investigates the design of optimal tri-generation systems for heat, power, and water production by considering different fuel selections to reduce reliance on fossil fuels. It explores the use of renewable energy sources and hybrid energy systems as cost-effective solutions for reducing carbon emissions. The research incorporates various energy sources and routes for energy and water production, subject to specific net carbon reduction targets. By analyzing data from different desalination plants, the study reveals that biomass is a viable alternative to natural gas, and MSW incineration becomes more desirable when higher NCRT values are utilized. The study also estimates the water production costs for a standalone CSP system integrated with different plants.
Article
Thermodynamics
Yiming Zhao, Dapeng Hu, Dongxu Cai, Yingguang Wang, Yong Liang
Summary: This study proposes a novel multi-stream cascade combined cycle (MS-CCC) system that enhances the utilization efficiency of cold energy and recovers the cold energy of the working fluid without additional heat exchangers. Compared to traditional methods, MS-CCC shows significant improvements in net annual income and efficiency.
APPLIED THERMAL ENGINEERING
(2023)
Article
Multidisciplinary Sciences
Bhalchandra Shingan, P. Vijay, Karthikraja Pandiyan
Summary: Air separation processes in LNG industry can be combined with LNG's direct expansion cycle (DEC) to recover cold energy and improve energy efficiency. This novel ASU design saves energy by utilizing the energy loss during air compression for LNG heating. This integration of air separation processes and LNG offers a sustainable and appealing option for the LNG industry.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Construction & Building Technology
Julian David Hunt, Natalia de Assis Brasil Weber, Behnam Zakeri, Ahmadou Tidiane Diaby, Paul Byrne, Walter Leal Filho, Paulo Smith Schneider
Summary: The article proposes the combination of Deep Seawater Cooling and Desalination (DSCD) technology to meet the cooling and water supply needs of buildings in tropical climates. This technology can provide renewable, low-emission cooling and desalinated water while reducing distribution costs.
SUSTAINABLE CITIES AND SOCIETY
(2021)
Article
Engineering, Chemical
Praveen Linga
Summary: This article presents a bibliometric analysis of the field of gas hydrates or clathrate hydrates from 1901 to 2020. The analysis includes the top countries, cited review articles, original research articles, source titles, field classifications, citation rate trends, and co-occurrence of keywords. Network visualization maps were created to analyze the citations and identify the relationships between countries, sources, and organizations.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Thermodynamics
Zuming Liu, Arijit Chakraborty, Tianbiao He, Iftekhar A. Karimi
Summary: The chemical industry relies heavily on fossil fuels, resulting in significant carbon emissions. Implementing combined heat and power (CHP) systems can effectively reduce both energy consumption and carbon emissions. This study presents a bi-objective optimization framework for CHP systems in chemical plants, considering steam turbine network design and renewable integration. The results demonstrate the trade-off between total annual cost and carbon emissions, showing the potential for emissions reduction through CHP systems.
APPLIED THERMAL ENGINEERING
(2023)
Article
Engineering, Environmental
Kan Jeenmuang, Phuwadej Pornaroontham, Katipot Inkong, Gaurav Bhattacharjee, Santi Kulprathipanja, Praveen Linga, Pramoch Rangsunvigit
Summary: This study reveals that using amino acids as kinetic promoters can enhance the formation of mixed methane-THF hydrates at room temperature and pressure, with hydrophobic amino acids showing the most significant effect.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Thermodynamics
Hyunho Kim, Junjie Zheng, Zhenyuan Yin, Ponnivalavan Babu, Sreekala Kumar, Jackson Tee, Praveen Linga
Summary: The rheology of TBAB semi-clathrate hydrate slurry (SHS) was studied, and the discrepancy in the literature was clarified. TBAB SHS exhibited non-Newtonian shear-thinning behavior, with its apparent viscosity increasing exponentially with the increase of hydrate fraction. Type B TBAB SHS was recommended due to its lower apparent viscosity. Additionally, the environmentally benign additive L-tryptophan was found to significantly decrease the apparent viscosity of TBAB SHS and reduce pumping power consumption in cooling applications by 68.7%.
Article
Chemistry, Multidisciplinary
Viphada Yodpetch, Katipot Inkong, Hari Prakash Veluswamy, Santi Kulprathipanja, Pramoch Rangsunvigit, Praveen Linga
Summary: Carbon capture and storage (CCS) is a promising method for reducing carbon dioxide (CO2) emissions from fossil fuels. Amino acids, such as leucine, methionine, and valine, were used as promoters in CO2 hydrate formation. Different concentrations of amino acids had varying effects on the rate of hydrate formation. The use of amino acids with the hybrid combinatorial reactor (HCR) approach shows promise for CCS applications.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Energy & Fuels
Junjie Ren, Siyu Zeng, Daoyi Chen, Mingjun Yang, Praveen Linga, Zhenyuan Yin
Summary: This study investigates the role of clay minerals in CO2 hydrate formation and dissociation in clay-rich sediments. It is found that the presence of sodium montmorillonite (Na-MMT) clay significantly reduces the induction time and growth rate of CO2 hydrate due to additional nucleation sites and induced surface electric field. The high viscosity of the suspension and the clay-induced strongly-polarized water layer impede the mass transfer of CO2, thereby retarding the overall kinetics of CO2 hydrate formation.
Article
Energy & Fuels
Vikas Dhamu, M. Fahed Qureshi, Saifudin Abubakar, Adam Usadi, Timothy A. Barckholtz, Ashish B. Mhadeshwar, Praveen Linga
Summary: Carbon capture and storage [CCS] is essential for reducing CO2 emissions, and one potential CCS concept is compressing and storing captured CO2 as gas hydrates in deep oceanic sediments. However, the high salinity of seawater may affect the formation and storage of CO2 hydrates. Therefore, it is crucial to understand the kinetics of liquid CO2 hydrate formation and dissociation in static brine systems.
Article
Energy & Fuels
Ye Zhang, Huanzhi Xu, Gaurav Bhattacharjee, Praveen Linga
Summary: With the increasing demand for natural gas in the current century, solidified natural gas technology is expected to play a vital role in enhancing energy resilience and ensuring sufficient energy supply globally. In this study, dioxane was used as an environmentally friendly additive and a dual-function promoter for hydrate formation in simulated seawater, addressing the issues of water scarcity and the use of toxic chemicals, and potentially increasing methane storage capacity.
Article
Engineering, Chemical
Namrata Gaikwad, Hyunho Kim, Gaurav Bhattacharjee, Jitendra S. Sangwai, Rajnish Kumar, Praveen Linga
Summary: This study experimentally investigated the formation of sH hydrate with methane and cyclooctane for possible applications in gas storage. The study found that the slow kinetics of sH hydrate formation can be improved by using low tryptophan concentrations. Raman analysis confirmed the presence of methane and cyclooctane in the sH hydrate cages.
ACS ENGINEERING AU
(2023)
Article
Energy & Fuels
Zheng Liu, Junjie Zheng, Zhiyuan Wang, Yonghai Gao, Baojiang Sun, Youqiang Liao, Praveen Linga
Summary: Natural gas hydrate (NGH) is an unconventional energy source with high energy density, huge reserves, and worldwide distribution. Sand-dominated hydrate-bearing sediments (HBS) are the most feasible category for exploitation, however, the presence of clay hinders the formation kinetics of the hydrates, making it challenging to study fluid production behavior. This study synthesized clayey-sandy HBS samples using a new method and observed that the presence of clay led to slower hydrate decomposition and a significant difference in fluid production behavior compared to sandy HBS. The findings call for further investigations and development of specific production strategies for clay-containing HBS.
Article
Engineering, Environmental
Jibao Zhang, Yan Li, Zhenyuan Yin, Praveen Linga, Tianbiao He, Xiangyuan Zheng
Summary: This study introduces an environmentally friendly kinetic promoter (L-valine) and couples it with a thermodynamic promoter (THF) to enhance the kinetics of H2 hydrate formation. The optimal enhancement is achieved using 0.3 wt% L-Val coupled with 5.56 mol% THF, resulting in a maximum volumetric H2 uptake of 29.83 +/- 1.22 v/v. The results provide insights into accelerating H2 uptake in solid-hydrate form and have potential applications in hydrate-based hydrogen storage.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Thermodynamics
Qiang Zhang, Junjie Zheng, Baoyong Zhang, Praveen Linga
Summary: Coalbed methane recovery is crucial for coal mine safety, reducing greenhouse gas emissions, and economic benefits. Gas hydrate technology can effectively separate CH4 from N2-rich coal mine gas. The synergistic effect of sII hydrate promoters and amino acids was examined for enhancing hydrate formation kinetics, separation performance, and CH4 recovery. Amino acids showed significant promotion effects, particularly for the propane system, and improved kinetics by over 10 times. CP-amino acid systems demonstrated excellent separation performance, increasing CH4 content from 30% to 70%. THF-amino acid systems achieved the highest CH4 recovery of up to 50.27%. The impact of amino acids varied depending on the system, and two possible mechanisms, including interfacial tension alteration and amino acid hydrophobicity, were discussed. These insights provide a basis for optimizing the hydrate process for coalbed methane recovery and other applications.
Article
Engineering, Environmental
Yan Li, Zhenyuan Yin, Hongfeng Lu, Chenlu Xu, Xuejian Liu, Hailin Huang, Daoyi Chen, Praveen Linga
Summary: Carbon capture and sequestration (CCS) is widely recognized as the most effective technology for reducing CO2 emissions and mitigating global climate change. Hydrate-based CO2 sequestration (HBCS) has emerged as a promising technology, and there is growing interest in using hydrophobic amino acids to enhance CO2 hydrate formation kinetics.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Thermodynamics
Yong Cheng, Fukai Song, Lei Fu, Saishuai Dai, Zhiming Yuan, Atilla Incecik
Summary: This paper investigates the accessibility of wave energy absorption by a dual-pontoon floating breakwater integrated with hybrid-type wave energy converters (WECs) and proposes a hydraulic-pneumatic complementary energy extraction method. The performance of the system is validated through experiments and comparative analysis.
Article
Thermodynamics
Jing Gao, Chao Wang, Zhanwu Wang, Jin Lin, Runkai Zhang, Xin Wu, Guangyin Xu, Zhenfeng Wang
Summary: This study aims to establish a new integrated method for biomass cogeneration project site selection, with a focus on the application of the model in Henan Province. By integrating Geographic Information System and Multiple Criterion Decision Making methods, the study conducts site selection in two stages, providing a theoretical reference for the construction of biomass cogeneration projects.
Article
Thermodynamics
Mert Temiz, Ibrahim Dincer
Summary: The current study presents a hybrid small modular nuclear reactor and solar-based system for sustainable communities, integrating floating and bifacial photovoltaic arrays with a small modular reactor. The system efficiently generates power, hydrogen, ammonia, freshwater, and heat for residential, agricultural, and aquaculture facilities. Thermodynamic analysis shows high energy and exergy efficiencies, as well as large-scale ammonia production meeting the needs of metropolitan areas. The hybridization of nuclear and solar technologies offers advantages of reliability, environmental friendliness, and cost efficiency compared to renewable-alone and fossil-based systems.
Editorial Material
Thermodynamics
Wojciech Stanek, Wojciech Adamczyk
Article
Thermodynamics
Desheng Xu, Yanfeng Li, Tianmei Du, Hua Zhong, Youbo Huang, Lei Li, Xiangling Duanmu
Summary: This study investigates the optimization of hybrid mechanical-natural ventilation for smoke control in complex metro stations. The results show that atrium fires are more significantly impacted by outdoor temperature variations compared to concourse/platform fires. The gathered high-temperature smoke inside the atrium can reach up to 900 K under a 5 MW train fire energy release. The findings provide crucial engineering insights into integrating weather data and adaptable ventilation protocols for smoke prevention/mitigation.
Article
Thermodynamics
Da Guo, Heping Xie, Mingzhong Gao, Jianan Li, Zhiqiang He, Ling Chen, Cong Li, Le Zhao, Dingming Wang, Yiwei Zhang, Xin Fang, Guikang Liu, Zhongya Zhou, Lin Dai
Summary: This study proposes a new in-situ pressure-preserved coring tool and elaborates its pressure-preserving mechanism. The experimental and field test results demonstrate that this tool has a high pressure-preservation capability and can maintain a stable pressure in deep wells. This study provides a theoretical framework and design standards for the development of similar technologies.
Article
Thermodynamics
Aolin Lai, Qunwei Wang
Summary: This study assesses the impact of China's de-capacity policy on renewable energy development efficiency (REDE) using the Global-MSBM model and the difference-in-differences method. The findings indicate that the policy significantly enhances REDE, promoting technological advancements and marketization. Moreover, regions with stricter environmental regulations experience a higher impact.
Article
Thermodynamics
Mostafa Ghasemi, Hegazy Rezk
Summary: This study utilizes fuzzy modeling and optimization to enhance the performance of microbial fuel cells (MFCs). By simulating and analyzing experimental data sets, the ideal parameter values for increasing power density, COD elimination, and coulombic efficiency were determined. The results demonstrate that the fuzzy model and optimization methods can significantly improve the performance of MFCs.
Article
Thermodynamics
Zhang Ruan, Lianzhong Huang, Kai Wang, Ranqi Ma, Zhongyi Wang, Rui Zhang, Haoyang Zhao, Cong Wang
Summary: This paper proposes a grey box model for fuel consumption prediction of wing-diesel hybrid vessels based on feature construction. By using both parallel and series grey box modeling methods and six machine learning algorithms, twelve combinations of prediction models are established. A feature construction method based on the aerodynamic performance of the wing and the energy relationship of the hybrid system is introduced. The best combination is obtained by considering the root mean square error, and it shows improved accuracy compared to the white box model. The proposed grey box model can accurately predict the daily fuel consumption of wing-diesel hybrid vessels, contributing to operational optimization and the greenization and decarbonization of the shipping industry.
Article
Thermodynamics
Huayi Chang, Nico Heerink, Junbiao Zhang, Ke He
Summary: This study examines the interaction between off-farm employment decisions between couples and household clean energy consumption in rural China, and finds that two-paycheck households are more likely to consume clean energy. The off-farm employment of women is a key factor driving household clean energy consumption to a higher level, with wage-employed wives having a stronger influence on these decisions than self-employed ones.
Article
Thermodynamics
Hanguan Wen, Xiufeng Liu, Ming Yang, Bo Lei, Xu Cheng, Zhe Chen
Summary: Demand-side management is crucial to smart energy systems. This paper proposes a data-driven approach to understand the relationship between energy consumption patterns and household characteristics for better DSM services. The proposed method uses a clustering algorithm to generate optimal customer groups for DSM and a deep learning model for training. The model can predict the possibility of DSM membership for a given household. The results demonstrate the usefulness of weekly energy consumption data and household socio-demographic information for distinguishing consumer groups and the potential for targeted DSM strategies.
Article
Thermodynamics
Xinglan Hou, Xiuping Zhong, Shuaishuai Nie, Yafei Wang, Guigang Tu, Yingrui Ma, Kunyan Liu, Chen Chen
Summary: This study explores the feasibility of utilizing a multi-level horizontal branch well heat recovery system in the Qiabuqia geothermal field. The research systematically investigates the effects of various engineering parameters on production temperature, establishes mathematical models to describe their relationships, and evaluates the economic viability of the system. The findings demonstrate the significant economic feasibility of the multi-level branch well system.
Article
Thermodynamics
Longxin Zhang, Songtao Wang, Site Hu
Summary: This investigation reveals the influence of tip leakage flow on the modern transonic rotor and finds that the increase of tip clearance size leads to a decline in rotor performance. However, an optimal tip clearance size can extend the rotor's stall margin.
Article
Thermodynamics
Kristian Gjoka, Behzad Rismanchi, Robert H. Crawford
Summary: This paper proposes a framework for assessing the performance of 5GDHC systems and demonstrates it through a case study in a university campus in Melbourne, Australia. The results show that 5GDHC systems are a cost-effective and environmentally viable solution in mild climates, and their successful implementation in Australia can create new market opportunities and potential adoption in other countries with similar climatic conditions.
Article
Thermodynamics
Jianwei Li, Guotai Wang, Panpan Yang, Yongshuang Wen, Leian Zhang, Rujun Song, Chengwei Hou
Summary: This study proposes an orientation-adaptive electromagnetic energy harvester by introducing a rotatable bluff body, which allows for self-regulation to cater for changing wind flow direction. Experimental results show that the output power of the energy harvester can be greatly enhanced with increased rotatory inertia of the rotating bluff body, providing a promising solution for harnessing wind-induced vibration energy.
