Article
Computer Science, Interdisciplinary Applications
Cristina Elsido, Emanuele Martelli, Ignacio E. Grossmann
Summary: This work proposes a multiperiod synthesis methodology to optimize utility systems, Rankine cycles, and Heat Exchanger Networks under different expected operating modes and off-design conditions. By using a bilevel decomposition algorithm, the proposed method can find cost-effective designs for complex systems with various constraints and operating conditions.
COMPUTERS & CHEMICAL ENGINEERING
(2021)
Article
Thermodynamics
Wahab Mubashir, Muhammad Adnan, Muhammad Zaman, Muhammad Imran, Salman Raza Naqvi, Atif Mehmood
Summary: This paper proposes an optimized trigeneration system that utilizes waste heat from an internal combustion engine for power generation and refrigeration. By integrating different technologies, the system achieves simultaneous power generation and refrigeration. The performance of different system configurations is analyzed in terms of energy, exergy, and economics, and the most efficient and economical configuration is identified. Genetic algorithm optimization improves the system's efficiency and reduces the levelized cost of electricity.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2023)
Article
Thermodynamics
Cesar Adolfo Rodriguez Sotomonte, Thiago Gotelip Correa Veloso, Christian J. R. Coronado, Marco A. Rosa do Nascimento
Summary: This study aims to optimize the design of a small-scale cogeneration system using ORC and absorption refrigeration cycle, evaluating the best solutions through a multi-objective genetic optimization algorithm. The results show that factors such as specific working fluids, net power output, and overall energy efficiency have significant impacts on the technical and economic performance of the cycle.
APPLIED THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Thalyta S. A. Santiago, Ana Elisa Achiles, Jose Vicente H. Dangelo
Summary: This study focused on the parametric analysis and optimization of a trigeneration system integrated with an ORC operating in a medium-sized hospital, aiming to improve energetic and exergetic efficiencies. Different configurations were evaluated based on the position of the ORC and the season group, with the best configuration achieving an energetic efficiency of approximately 81% and an exergetic efficiency of around 42%.
Article
Green & Sustainable Science & Technology
Ali Sharifi, Moharram Jafari, Faramarz Ranjbar, Faramarz Talati
Summary: According to research by the International Energy Agency, fossil fuels have met around 80% of the world's energy demands in recent years, resulting in increased CO2 emissions. The transition to more efficient energy systems that utilize renewable energy sources, including hydrogen fuels, is crucial in order to address environmental issues and reduce reliance on fossil fuels.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2023)
Article
Thermodynamics
Lixia Kang, Jianping Tang, Yongzhong Liu
Summary: This paper presents a three-step method for designing the optimal ORC waste heat recovery system that meets the requirements of multi-period and multi-source heat recovery. The method involves selecting candidate working fluids and WHRS cycles, establishing a multi-source and multi-cycle WHRS model, and finalizing the design using a time-sharing model.
Article
Green & Sustainable Science & Technology
Yongzhen Wang, Chengjun Li, Jun Zhao, Boyuan Wu, Yanping Du, Jing Zhang, Yilin Zhu
Summary: Geothermal power generation technology in China faces challenges and opportunities, with main obstacles including energy scarcity of geothermal resources and immature technology. However, there are numerous opportunities for improving GPG in China through approaches such as utilizing abandoned oil wells, developing dry hot rocks, or creating multi-energy complementary systems.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Energy & Fuels
Zheng Liang, Yingzong Liang, Xianglong Luo, Jianyong Chen, Zhi Yang, Chao Wang, Ying Chen
Summary: Organic Rankine cycle (ORC) is a promising technology for converting low-grade energy into electricity. Conventional ORCs often operate with a single heat source, which can reduce efficiency. This study proposes a superstructure-based method for ORC design that synthesizes heat exchanger network for hybrid heat sources and optimizes the ORC and heat sources' parameters. Results show that implementing hybrid heat sources improves the system performance.
Article
Thermodynamics
Lukasz Witanowski, Piotr Klonowicz, Piotr Lampart, Pawel Ziolkowaki
Summary: This paper focuses on the multi-objective efficiency optimization of a one-stage axial ORC turbine using an Implicit Filtering algorithm. The efficiency is improved in both modes of operation by changing the rotor profiles and the shape of endwall contours of the rotor domain.
Article
Thermodynamics
Zekuan Liu, Zixuan Wang, Kunlin Cheng, Cong Wang, Chan Ha, Teng Fei, Jiang Qin
Summary: The coupling of organic Rankine cycle (ORC) system with closed Brayton cycle (CBC) system is an effective method to recover waste heat and generate more electricity, solving the challenge of lunar base energy system during the long lunar night. A mathematical model is developed to evaluate the variation of thermal efficiency, exergy destruction, and Brayton-Rankine rotating unit (BRRU) mass throughout the lunar day with the driving source of collector or heat storage unit. The results show that when the helium mole fraction is 0.9, CBC stops on the day of 7.7 at night, with a maximum power generation of 169.21 kW. The thermal and exergy efficiency can reach 34.49% and 31%, respectively. After three-objective optimization, the thermal efficiency (30.07%), exergy destruction (169.62 kW), and BRRU mass (720.3 kg) can be improved compared to the basic working condition, which is crucial for practical applications.
Article
Engineering, Chemical
Xi Gu, Feng Ji, Linlin Liu, Jian Du
Summary: This study proposes a global energy integration method for industrial parks to address the issue of multiple forms of energy production, distribution, and recovery. The proposed method is demonstrated through a case study, showing that the quantity of consumed fuel has a considerable influence on energy distribution and park costs, and the introduction of solar energy affects emissions and energy distribution.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Thermodynamics
Yuan Zhang, Tianyang Liang, Ke Yang
Summary: This paper proposes an integrated energy storage system consisting of Compressed Carbon dioxide Energy Storage (CCES) and Organic Rankine Cycle (ORC) and evaluates the system performance using four criteria. The results show the influence of key parameters on system performance and recommend the optimal parameters through multi-objective optimization.
Article
Chemistry, Physical
Haitao Lin, Xianhua Wu, Hamdi Ayed, Abir Mouldi, Syed Zaheer Abbas, Amir Ebrahimi-Moghadam
Summary: This paper introduces a new layout of an electricity and liquid hydrogen cogeneration power plant and evaluates its performance from the exergoeconomic and environmental standpoints. The optimal design parameters are determined using a parametric model and a multi-objective optimization approach, resulting in maximum electricity and hydrogen production and minimum total cost rate. The optimal environmental index is found to be 1.09 kg(CO2)/kWh.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Thermodynamics
P. Ahmadi, I. Fakhari, Marc A. Rosen
Summary: This research introduces an innovative optimization method based on a Genetic Algorithm. The method is applied to a system consisting of multiple components. By optimizing multiple objectives, the best points are obtained, and the performance and reliability of the optimization results are evaluated through a comparative parametric study.
Article
Engineering, Marine
Luis Alfonso Diaz-Secades, R. Gonzalez, N. Rivera, Elena Montanes, Jose Ramon Quevedo
Summary: Waste heat recovery is an effective method to improve engine efficiency and meets the needs of the maritime industry. The proposed waste heat recovery system can recover high, medium, and low-grade waste heat by using steam Rankine cycle, organic Rankine cycle, thermoelectric harvesters, and desalination. It effectively recovers waste energy, offers economic benefits, and satisfies the daily demand for fresh water.
Article
Thermodynamics
Zheng Liang, Yingzong Liang, Xianglong Luo, Jianyong Chen, Zhi Yang, Chao Wang, Ying Chen
Summary: The performance and design of organic Rankine cycle are influenced by heat source properties, cycle structures, and working fluids. Using a mixed-integer nonlinear programming model can optimize operating conditions, determine the best working fluid composition and cycle structure, increase net power output, and find a balanced design.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Chemistry, Multidisciplinary
Tania Itzel Serrano-Arevalo, Luis Fernando Lira-Barragan, Mahmoud M. El-Halwagi, Jose Maria Ponce-Ortega
Summary: This paper presents a mathematical programming approach for managing wastewater in shale gas production. The approach considers the variability of wastewater characteristics and seasonal variabilities in freshwater availability, aiming to achieve economic and environmental objectives through stream segregation and water reuse.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Fahad M. Al-Fadhli, Nawaf Alhajeri, Hisham Ettouney, Debalina Sengupta, Mark Holtzapple, Mahmoud M. El-Halwagi
Summary: This paper investigates the goals of sustainable water and energy production and proposes a novel systems-integration approach. Using the case study of the Kuwait water-energy nexus, it explores optimized design and operational strategies to meet economic and environmental objectives.
CLEAN TECHNOLOGIES AND ENVIRONMENTAL POLICY
(2022)
Article
Thermodynamics
Xianglong Luo, Pengfei Chen, Yingzong Liang, Jianyong Chen, Zhi Yang, Chao Wang, Ying Chen
Summary: The study proposes a novel partial condensation trans-critical CO2 recompression cycle (PCRC) to address the issues of condensing difficulty and low performance in traditional recuperated trans-critical CO2 Rankine cycle (RTRC). Thermodynamic analysis and optimization models are formulated, and the superiority of PCRC in thermal efficiency and operation flexibility is validated through case studies. The study also investigates the influence of key parameters and carries out sensitivity analysis to determine the operational flexibility of PCRC.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Engineering, Chemical
Juan Jose Olivarez-Areyan, Sandra Cecilia Cerda-Flores, Fabricio Napoles-Rivera, Mahmoud M. El-Halwagi
Summary: This work presents an optimization model for macroscopic water networks, considering wastewater treatment, rainwater harvesting, allocation, and recycle/reuse. The systematic optimization approach provides rigorous trade-offs and synergistic opportunities for the design and operation of the macroscopic water system while considering multiple intertwined objectives.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Computer Science, Interdisciplinary Applications
N. J. Chrisandina, S. Vedant, E. Iakovou, E. N. Pistikopoulos, M. M. El-Halwagi
Summary: This article discusses the challenges faced by energy supply chain resilience and the necessity of adopting a multi-scale approach. The authors propose a framework for energy supply chain resilience and list four scales of operation.
COMPUTERS & CHEMICAL ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Yingzong Liang, Jiacheng Xu, Chi Wai Hui, Xianglong Luo, Jianyong Chen, Zhi Yang, Ying Chen
Summary: A thermodynamically oriented method is developed to identify the theoretical and practical limits of pressure-retarded osmosis (PRO) on converting salinity gradient power to mechanical energy. Pinch analysis is used to find the mass exchange limit, and a graphical method is derived to determine the optimal pressure change. Additionally, a problem table method is presented for analyzing multi-stream PRO processes.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Energy & Fuels
Jiacheng Xu, Yingzong Liang, Xianglong Luo, Jianyong Chen, Zhi Yang, Ying Chen
Summary: Pressure-retarded osmosis is a promising technique for generating energy by recovering salinity gradient from high concentration effluents. This study proposes a novel method for optimizing the modules layout of a multi-stream PRO system, resulting in improved energy recovery efficiency.
Review
Engineering, Chemical
Cesar Ramirez-Marquez, Musaed M. Al-Thubaiti, Mariano Martin, Mahmoud M. El-Halwagi, Jose Maria Ponce-Ortega
Summary: Nowadays, industrial processes need to meet market demands and be sustainable. Process intensification (PI) offers opportunities to enhance process performance and achieve sustainability objectives. PI can be achieved through reducing resource consumption, increasing efficiency, downsizing equipment, improving throughput, and reducing environmental emissions. This perspective article discusses the background, challenges, and opportunities of PI in order to identify options for enhanced sustainability. It also explores emerging tools that can help intensify conventional processes and improve sustainable performance.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Moises Ferreyra-Quiroz, Luis Fernando Lira-Barragan, Mahmoud M. El-Halwagi, Jose Maria Ponce-Ortega
Summary: This paper proposes a mathematical programming formulation to optimize the configuration of water and CO2 in shale gas hydraulic fracturing operations. The aim is to minimize the total annual cost while considering water availability and CO2 generation. The results show that increasing the percentage of CO2 in the fracturing fluid can reduce freshwater requirements but increases the overall cost, and the availability of freshwater has an impact on the optimization.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Engineering, Chemical
Francisco Javier Lopez-Flores, Luis Fernando Lira-Barragan, Eusiel Rubio-Castro, Mahmoud M. El-Halwagi, Jose Maria Ponce-Ortega
Summary: In this study, deep learning models based on a multilayer perceptron are developed to forecast 12 month cumulative produced shale gas and 90 day produced flowback water using data from the Eagle Ford Formation. These models provide important references for decision-makers in drilling new wells. Input variables such as latitude, longitude, true vertical depth, lateral longitude, total proppant, and total fracture water are used. The trained models are then evaluated in the Burgos Basin to analyze energy benefits, freshwater consumption, and flowback water produced through well drilling in Mexico. The results show that the multilayer perceptron models perform well with high coefficient of determination and low mean absolute error values for the validation set.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Francisco Javier Lopez-Flores, Luis Fernando Lira-Barragan, Eusiel Rubio-Castro, Mahmoud M. El-Halwagi, Jose Maria Ponce-Ortega
Summary: This paper proposes a novel mathematical programming approach that combines mixed-integer nonlinear programming with machine learning models for determining operating conditions, gas production, and optimal water management in shale gas fields during the completion phase. The dataset used for developing the artificial neural network model is collected from the Eagle Ford Texas formation, selecting total cumulative gas production and flowback water as output variables. The mathematical optimization model considers machine learning models, mass balances, treatment, storage, reuse, and disposal options, as well as well location selection and economic indicators from shale gas sales. A case study demonstrates the benefits of the proposed approach, which achieves a water consumption of 6.71 L/GJ and allows for 27% of the required fracture water to be obtained through flowback water reuse, with attractive economic indicators.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Thermodynamics
Yisheng Huang, Jianyong Chen, Ying Chen, Xianglong Luo, Yingzong Liang, Jiacheng He, Zhi Yang
Summary: A novel heat pump system (LEHP) is proposed, which can actively adjust the composition of working fluid to achieve separation and combination. Compared with traditional heat pumps, this system has better performance and can achieve higher performance coefficients under various operating conditions.
APPLIED THERMAL ENGINEERING
(2023)
Article
Engineering, Chemical
Saul Herrera-Ovando, Arturo Jimenez-Gutierrez, Nikolaos K. Kazantzis, Mahmoud M. El-Halwagi
Summary: This study presents a probabilistic approach for inherent process safety assessment, which takes into account uncertainties and provides a more accurate evaluation and characterization of inherent process safety during the design stage of chemical processes.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Engineering, Chemical
Eman Aldamigh, Sarbajit Banerjee, Mahmoud M. El-Halwagi
Summary: Municipal solid waste (MSW) is an important resource for biomass-based monetization and decarbonization. This study combines MSW utilization with solar-assisted electrolysis to generate green hydrogen and oxygen. The results show the tradeoffs of various design and operating strategies in terms of profitability and environmental impact.
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.