Article
Energy & Fuels
Ngoc N. Nguyen, Vinh T. La, Chinh D. Huynh, Anh Nguyen
Summary: Carbon capture and storage (CCS) is crucial for reducing CO2 emissions and achieving climate change targets. Hydrate-based carbon capture (HBCC) is a promising and potentially competitive method, but slow kinetics and limited industrial experience present challenges for deployment.
Article
Energy & Fuels
Yuan-Mei Song, Ru-Quan Liang, Fei Wang, Dan-Hui Zhang, Liu Yang, Deng-Bo Zhang
Summary: The study utilized carbon nanotubes to prepare sulfonated carbon nanotubes, which enhanced the methane storage capacity and formation rate in hydrate formations. Sulfonated carbon nanotubes showed excellent dispersity and stability in methane hydrate formations.
Article
Multidisciplinary Sciences
Jeffrey M. Bielicki, Martina Leveni, Jeremiah X. Johnson, Brian R. Ellis
Summary: Achieving ambitious greenhouse gas mitigation targets will require advances in carbon-free power generation and the use of geologic carbon dioxide (CO2) storage. Utilizing CO2 as a working fluid for geothermal energy production and energy storage can help isolate CO2 from the atmosphere and enable high levels of carbon-free electricity production. This article summarizes the state of knowledge for sedimentary basin CO2-geothermal and explores its potential role in decarbonizing the energy sector. It also discusses the promise and challenges of using geologically stored CO2 for bulk energy storage.
Article
Thermodynamics
Elaheh Sadeh, Abdolreza Farhadian, Abolfazl Mohammadi, Mina Maddah, Mahdi Pourfath, Mingjun Yang
Summary: The increased energy demand and population growth have resulted in a significant rise in atmospheric carbon dioxide (CO2). Natural gas and carbon capture and storage are crucial for efficient management. Gas hydrates have potential for CO2 capture and energy storage, but their slow formation kinetics have limited commercial usage. In this study, a novel anionic surfactant called aconitic acid (ASA) was developed to improve the formation kinetics of methane and CO2 hydrates. The experiments showed that even at low concentrations, ASA significantly enhanced the formation kinetics of methane hydrates. Molecular dynamics simulations revealed that ASA molecules increased the solubility of gas molecules in the solution, leading to enhanced hydrate growth. Furthermore, no foam formation occurred in the ASA solution at high concentrations. These findings highlight the potential of ASA as an efficient and foamless gas hydrate promoter for methane storage and CO2 capture applications.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Thermodynamics
Marco Astolfi, Edoardo De Lena, Francesco Casella, Matteo Carmelo Romano
Summary: The study focuses on the potential application of calcium looping CO2 capture system in coal-fired power plants, comparing two different CaL systems and analyzing the role and economic benefits of sorbent storage systems. It is found that the secondary storage system can provide more flexible grid services and reduce the capital cost of CaL systems.
APPLIED THERMAL ENGINEERING
(2021)
Article
Engineering, Environmental
Mohd Hafiz Abu Hassan, Farooq Sher, Saba Sehar, Tahir Rasheed, Ayesha Zafar, Jasmina Sulejmanovic, Usman Ali, Tazien Rashid
Summary: Gas hydrate formation is considered a new technology to reduce the impact of greenhouse gases, specifically the increasing CO2 concentration in the atmosphere. Experimental studies have shown that different sample preparation procedures, stirring speed, and temperature all play a role in the rate of CO2 hydrate formation. Promoters combination has also been found to increase the conversion of water to hydrate over longer experimental durations.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Multidisciplinary Sciences
Pengchen Wang, Beibei Shi, Nan Li, Rong Kang, Yan Li, Guiwen Wang, Long Yang
Summary: This paper discusses the potential of CCUS technology in reducing carbon emissions in China and presents a prediction. The prediction indicates that by increasing the rate of CCUS emission reductions, China could achieve a 3.8% reduction in carbon emissions by 2040. The power and chemical industries have significant potential for emission reduction.
SCIENTIFIC REPORTS
(2023)
Article
Energy & Fuels
Hui Wang, Yi Lu, Xiaoxin Zhang, Qi Fan, Qingping Li, Lunxiang Zhang, Jiafei Zhao, Lei Yang, Yongchen Song
Summary: The current situation of global warming requires immediate attention due to the excessive accumulation of CO2 in the atmosphere. This paper investigates the behavior of CO(2) hydrate growth in salt-containing electrolyte solutions using molecular dynamics simulations. The study explores the effect of thermodynamic conditions and salt ions on hydrate growth and provides insights into the mechanism of CO2 hydrate generation in seawater at the microscopic level.
Article
Green & Sustainable Science & Technology
Tahamina Khanam, David M. Reiner
Summary: This study investigates the gaps between knowledge and willingness, willingness and performance, and knowledge and performance among 2137 British residents in relation to carbon dioxide emissions reduction and emerging technologies. The findings reveal that while the respondents have good knowledge about climate change and carbon issues, there is a disparity between their willingness and actual performance. Policymakers and researchers need to address this gap and develop comprehensive plans to meet their emissions reduction targets.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Green & Sustainable Science & Technology
Andre Bolt, Ibrahim Dincer, Martin Agelin-Chaab
Summary: This study presents a novel multigeneration system that combines solar and wind energy to store thermal energy, capture carbon dioxide emissions from steel production, and produce electricity, space heating, methane, hydrogen gas, and freshwater. The system demonstrates high energy and exergy efficiencies.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Energy & Fuels
Meku Maruyama, Shun Kao, Hitoshi Kiyokawa, Satoshi Takeya, Ryo Ohmura
Summary: In this study, clathrate-hydrate-based continuous CO2 capture was experimentally investigated, and it was found that the CO2 concentration rate and recovery ratio were lower compared to pre-combustion systems. However, it was revealed that improving the geometry of mixing impellers could enhance the CO2 recovery ratio for continuous operation.
Article
Energy & Fuels
Xiao-Yan Deng, Ying Yang, Dong-Liang Zhong, Xi-Yue Li, Bin-Bin Ge, Jin Yan
Summary: This study investigates the morphology and kinetics of CO2 hydrate formation in the presence of sodium dodecyl sulfate (SDS). It was found that the growth of CO2 hydrate above the gas-liquid interface became stronger with higher SDS concentration, indicating an enhanced promoting effect of SDS on CO2 hydrate formation. The highest efficiency for CO2 hydrate formation was achieved at 1500 and 3000 ppm of SDS, showing potential for improving hydrate-based CO2 capture technology in the future.
Article
Thermodynamics
Harsha Kumar Bokka, Hon Chung Lau
Summary: This paper investigates the opportunities to use carbon capture and storage (CCS) in Vietnam's power and industry sectors to reduce carbon emissions. The results show that Vietnam's power sector emits 136 Mtpa CO2 and the industry sector emits 88 Mtpa CO2. The nearby sedimentary basins have sufficient storage capacity to store 831 years of CO2 emissions. Additionally, there is potential for CO2 enhanced oil recovery and enhanced gas recovery, which could recover 1058 MMbbl and 95 MMbbl of oil from oil fields and gas fields, respectively. The study proposes establishing four CCS hubs to connect regional CO2 sources and sinks, which could remove up to 142 Mtpa CO2 or 64% of Vietnam's stationary emissions.
Article
Green & Sustainable Science & Technology
Siyue Ren, Xiao Feng, Yufei Wang
Summary: The research conducted emergy analysis on coal and biomass based IGCC power generation systems with/without CCS, showing that the sustainability of systems can be improved with the integration of CCS but will result in increased investment costs. It was found that under high CO2 tax values, adopting CCS can further enhance the sustainability of IGCC systems.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Thermodynamics
Sanehiro Muromachi, Kiyofumi Suzuki, Norio Tenma
Summary: This study reports phase equilibrium data for urea + methane + water and urea + carbon dioxide + water systems, and finds that urea can be used as a thermodynamic hydrate inhibitor in subsea methane hydrate systems. The inhibition effect of urea is slightly weaker than that of methanol, but it can reach applicable hydrate inhibition temperatures under specific conditions. Based on the present equilibrium data and seafloor conditions, urea can be used for methane gas production and hydrate-based carbon capture and storage systems.
FLUID PHASE EQUILIBRIA
(2023)
Article
Engineering, Geological
Yongchang Feng, Lin Chen, Sukru Merey, Koorthedath Pullayikodi Lijith, Devendra N. Singh, Atsuki Komiya, Shigenao Maruyama
Summary: Gas hydrates are a promising alternative energy source and a multilayered reservoir model was simulated to study the dissociation process during depressurisation production. The model considers the effects of initial reservoir temperature and permeability on hydrate dissociation, which in turn affects gas production. The simulation results match closely with field tests, making the proposed multilayered model useful for analysing production strategies.
ENVIRONMENTAL GEOTECHNICS
(2023)
Article
Engineering, Geological
Lin Chen, Sukru Merey, Ingo Pecher, Junnosuke Okajima, Atsuki Komiya, Juan Diaz-Naveas, Shouding Li, Shigenao Maruyama, Sain Kalachand, Bjorn Kvamme, Richard Coffin
Summary: This study analyses the recent progress in worldwide drilling and production activities of methane hydrate and confirms its potential for comprehensive utilisation. Although different countries have divergent production methods, there is promising prospect for future large-scale utilisation. Therefore, it is necessary to establish international regulations for commercial explorations of methane hydrate projects.
ENVIRONMENTAL GEOTECHNICS
(2022)
Review
Food Science & Technology
Ksenija Rutnik, Masa Knez Hrncic, Iztok Joze Kosir
Summary: Hop essential oil is the reason behind the specific pleasant aroma in beer, and besides being used in beer production, it also has positive effects on human health and can be used as a natural pesticide without harm to humans.
FOOD REVIEWS INTERNATIONAL
(2022)
Article
Energy & Fuels
Dong Yang, Lin Chen, Jiaxiang Chen, Yongchang Feng
Summary: This study focuses on numerical simulation and analysis of heat transfer characteristics in a supercritical heat transfer loop, examining the flow transitions and heat transfer behaviors from subcritical to supercritical conditions. The research proposes an empirical correlation and a neural network prediction model, which are compared with experimental and numerical results, to understand the impacts of boundary layer and core flow transitions on heat transfer enhancements and deteriorations.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Thermodynamics
Lin Chen, Qiaoge Zhang, Qixian Wu, Dong Yang, Gang Zeng, Yizhi Zhang, Atsuki Komiya
Summary: Visual characterization of the cross-mixed fiber (CA-CN) membrane process was conducted using a newly proposed Pixelated-Array Masked Phase-Shifting Interferometer system in this study, revealing that localized features dominate the cross-membrane transportation process and subsequent diffusion process is largely dependent on localized transportation.
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2022)
Article
Mechanics
Lin Chen, Rui Zhang, Yuki Kanda, Dipankar N. Basu, Atsuki Komiya, Haisheng Chen
Summary: The role of near-critical properties in transient fluid transport physics, especially in the boundary layers, is investigated in this study. The results show that the diffusion effect mainly governs the boundary layers, while exhibiting wave characteristics in the bulk.
Article
Nuclear Science & Technology
Dong Yang, Lin Chen, Yongchang Feng, Haisheng Chen
Summary: This paper investigates the heat transfer mechanism of supercritical water during the transition process from subcritical to supercritical states. The results reveal that the difference in thermophysical properties between the boundary layer and the core region is the main reason for the heat transfer behavior, and the flow structure on the buffer layer is a dominating factor for heat transfer deterioration.
NUCLEAR SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Mechanical
Yuka Iga, Junnosuke Okajima, Yuki Yamagichi, Hirotoshi Sasaki, Yu Ito
Summary: The thermodynamic suppression effect of cavitation in a NACA0015 hydrofoil is experimentally investigated in this study. The results show that the cavity length at higher temperatures is shorter than that at lower temperatures, except in the case of unsteady cavitation. The temperature reduction inside the cavity is accurately measured using thermistors, and the predicted temperature reduction at different temperatures is obtained from the measured cavity length.
JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME
(2023)
Review
Energy & Fuels
Lin Chen, Yizhi Zhang, Karim Ragui, Chaofeng Hou, Jinguang Zang, Yanping Huang
Summary: This paper reviews the molecular dynamics concepts in analyzing heat transfer of supercritical CO2 and identifies the major parameters affecting thermal coefficients accuracy. It organizes the aspects of construction, transfer identification, and thermal performance according to their challenges and potential solutions related to the properties of supercritical CO2. The characteristics of bound force field schemes and thermal relaxation approaches are discussed in a case-by-case manner. The paper also recommends future studies on molecular dynamics models in a wide range of supercritical conditions and phase-interactions for coupled heat and mass transfer systems, due to the lack of literature on similar inquiries. The review emphasizes the importance of determining the thermo-hydraulic characteristics of supercritical CO2 for the feasibility of developed technology.
Article
Thermodynamics
Abid Ustaoglu, Volkan Akgul, Junnosuke Okajima
Summary: The electric conversion efficiency of a conventional photovoltaic cell in the market is around 13-22%. The remaining part is converted into heat. In this study, a comparative performance analysis was carried out among non-imaging concentrating photovoltaic thermal systems with various truncation levels of the reflector to attain uniform illumination and better electrical and thermal energy conversion performance. The results show that truncation reduces the photovoltaic cell temperature and provides more uniform temperature distribution. Compound Hyperbolic Photovoltaic Thermal system has the highest power generation per unit reflector area for all truncation levels and incidence angles.
APPLIED THERMAL ENGINEERING
(2023)
Article
Construction & Building Technology
Hikaru Ishibashi, Riku Tomabechi, Kurumu Nishidate, Nanaho Osaka, Tomoki Shimomura, Shoei Yamada, Junnosuke Okajima, Takuma Kogawa
Summary: The study investigated the importance of modeling radiative absorption in a high concentration of water vapor environment, such as inside a sauna, through numerical analysis and fieldwork. Radiative heat transfer analysis was performed using the discrete ordinate method (DOM) with OpenFOAM software, and a full-spectrum k-distribution (FSK) was adopted to model the radiative absorption of the medium. The results showed significant improvement in predicting mean radiant temperature (MRT) when using the FSK method compared to the conventional transparent gas method.
BUILDING AND ENVIRONMENT
(2023)
Article
Mechanics
Takahiro Okabe, Keitaro Shirai, Takumi Okawa, Junnosuke Okajima, Minori Shirota
Summary: This study investigates the spreading behaviors of water drops impacting a heated sapphire plate and establishes a phase diagram to describe different processes. The experimental results indicate that wall temperature and Weber number have significant influences on the spreading behaviors, and the contact line instability induced by thermal effects is observed.
JOURNAL OF FLUID SCIENCE AND TECHNOLOGY
(2022)
Article
Mechanics
Yuma Okubo, Junnosuke Okajima, Yuka Iga
Summary: This study developed an estimation method for cavity temperature from unsteady temperature response, visualized cavity image, and lumped capacitance model, which can solve the issue of limited temperature measurement inside the cavity.
JOURNAL OF FLUID SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Aerospace
Shuang Ma, Lin Chen
Summary: This study developed a numerical method for digitalizing flow fields using luminescent mini-tufts for visualization. The study analyzed the changing mode of the mini-tufts' angle and observed their transient oscillation.
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.
