Article
Chemistry, Physical
Faeze Moradi Nafchi, Ehsan Baniasadi, Ebrahim Afshari, Nader Javani
Summary: This study develops an exergoeconomic model to analyze a direct steam solar tower-hydrogen gas turbine power plant. The results show that increasing solar irradiation improves the cycle's efficiency, and the mass flow rate of the heat transfer fluid in the solar system has a considerable impact on the cost of output power.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Thermodynamics
Turgay Koroglu, Oguz Salim Sogut
Summary: Advanced exergoeconomic analysis is a powerful tool to evaluate the economic improvement potential of a system, but it lacks providing information on the required investments to be made to improve the system and its components while considering cost-benefit assessments. Novel criteria are introduced to fulfill the shortcomings of this analysis and provide further insight about investment feasibility of components as well as the whole system. The criteria are applied to a marine steam power plant to evaluate the system and its components.
Article
Thermodynamics
Mohsen Yazdi, Mohammad Hasan Khoshgoftar Manesh, Saeed Kabiri
Summary: The present study conducted energy, exergy, exergoeconomic, exergoenvironmental, emergoeconomic, and emergoenvironmental analyses, as well as enhanced exergy analysis, for a solar thermal power plant with direct steam generation. The results showed that the overall emergoeconomic factor of the DSG solar power plant was 85.34%, and its total emergoenvironmental factor was 85.56%. Enhanced exergy analysis revealed avoidable percentages of the emergoenvironmental rate allocated to exergy destruction for the solar field, low-pressure turbine, and high-pressure turbine, which were 10%, 42%, and 34%, respectively.
INTERNATIONAL JOURNAL OF EXERGY
(2022)
Article
Energy & Fuels
Somchart Chantasiriwan
Summary: This paper investigates an alternative method of solar-aided power generation using direct steam generating parabolic trough collectors for feed water heating in a small biomass power plant. The method aims to increase power output and electrical energy generation efficiency by raising the temperature of the heat transfer fluid through the use of parabolic trough collectors.
Article
Green & Sustainable Science & Technology
MohammadAmin Javadi, Niloofar Jafari Najafi, Mani Khalili Abhari, Roohollah Jabery, Hamidreza Pourtaba
Summary: The research studied the Abadan Combined cycle power plant in Iran from the perspectives of Energy, Exergy, Economic and Environmental, proposing three different configurations integrating a solar power tower system. Results showed that the first configuration had the lowest initial cost and reduced emissions by 8041 tonnes/year, the second configuration had the highest energy and exergy efficiency saving $11 million in annual fuel consumption and preventing 34563tonnes/year of emissions, while the third configuration had the highest power generation of 370.4 MW.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2021)
Article
Environmental Studies
Hardik K. Jani, Surendra Singh Kachhwaha, Garlapati Nagababu, Alok Das, M. A. Ehyaei
Summary: This study proposes a multidimensional evaluation method to assess the performance of hybrid wind-solar energy systems. Using long-term data and mathematical modeling, the research finds that hybridization can improve the system's capacity factor, exergy efficiency, and extended exergy efficiency, while reducing power fluctuations and specific emissions.
ENERGY & ENVIRONMENT
(2023)
Article
Thermodynamics
Abdullah A. Al Kindi, Paul Sapin, Antonio M. Pantaleo, Kai Wang, Christos N. Markides
Summary: This study analyzes the thermo-economic performance of steam accumulation and integrated concrete-steam TES options in direct steam generation concentrated solar power (CSP) plants. The results show that the integrated concrete-steam TES option provides higher TES capacity, electricity output, and thermal efficiency compared to the traditional steam accumulation option, while reducing costs.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Thermodynamics
Tailu Li, Xuelong Li, Xiang Gao, Haiyang Gao, Nan Meng
Summary: The low performance of geothermal power generation system is mainly caused by the poor performance of its components, especially the turbine. By increasing the isentropic efficiency of the turbines and the working fluid pumps, and decreasing the heat transfer temperature difference of the evaporator and the condenser, the internal exergy destruction of each component can be reduced, thereby improving the system performance.
APPLIED THERMAL ENGINEERING
(2023)
Article
Environmental Sciences
Emmanuel Odeh, Ini Ikpe, Fidelis Abam
Summary: This paper presents an advanced analysis of the exergoenvironmental and thermo-sustainability of a 5-million ton capacity cement plant using real-time operational data. The analysis focuses on component-wise modeling and separates the exergy destruction into different parts for two production lines. The results show varying levels of exergy efficiency and exergoenvironmental factor for the different components, with potential for improvement identified in the study.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Thermodynamics
Heng Chen, Yunyun Wu, Yuchuan Zeng, Gang Xu, Wenyi Liu
Summary: The proposed hybrid solar-municipal solid waste power system effectively improves steam cycle performance by using heat harvested from sunlight to reheat steam in an incineration plant. Thermodynamic and economic assessments demonstrate the system's efficiency and economic viability, with excellent performance throughout the year and long-term economic value.
APPLIED THERMAL ENGINEERING
(2021)
Article
Energy & Fuels
Ernesto Enciso Contreras, Juan Gabriel Barbosa Saldana, Jesus de la Cruz Alejo, Claudia Del C. Gutierrez Torres, Jose Alfredo Jimenez Bernal, Maria Belem Arce Vazquez
Summary: Power generation using renewable technologies, such as solar concentrating technologies, has become a popular option worldwide. The combination of a parabolic trough collector (PTC) with direct steam generation (DSG) has been identified as an excellent choice due to its cost-effectiveness and simplicity. In this study, a numerical tool called SOLEEC software was developed to thermally evaluate the DSG with PTC technology, allowing users to compare different PTC geometrical dimensions and materials for steam generation. The software showed a less than 5% error compared to literature results and was successfully used to evaluate a power plant in Mexico, indicating a potential 35% reduction in the solar field.
Article
Energy & Fuels
Eduardo Gonzalez-Mora, Ma Dolores Duran-Garcia
Summary: This study conducted an energy and exergy (2E) analysis on various configurations of a conceptual direct steam generation solar power plant in Agua Prieta, Mexico, optimized with Fresnel reflectors coupled with a regenerative steam Rankine power cycle. This establishes a reference for future implementation of the technology in concentrated solar power plants in Mexico.
Article
Thermodynamics
Uchenna G. Azubuike, Howard O. Njoku, Onyemaechi Ekechukwu
Summary: The advanced exergy and exergoeconomic analysis methodologies excel in quantifying endogenous/exogenous exergy destruction rates and costs, revealing system component interactions and improvement potentials. This is crucial for enhancing cost-effectiveness of thermal systems.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL OF POWER AND ENERGY
(2023)
Article
Thermodynamics
Iman Fakhari, Parsa Behinfar, Farhang Raymand, Amirreza Azad, Pouria Ahmadi, Ehsan Houshfar, Mehdi Ashjaee
Summary: This study introduces a novel triple-pressure combined cycle power plant system with heat recovery technology and combustion chamber steam injection to reduce hazardous emissions. Through a comprehensive investigation of energy, exergy, economic, and environmental impacts, a tri-objective optimization is conducted to improve efficiency, lower costs, and reduce emissions.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Green & Sustainable Science & Technology
Louay Elmorsy, Tatiana Morosuk, George Tsatsaronis
Summary: This paper provides a comparative analysis of exergy, economic, and exergoeconomic aspects for three solar thermal technologies. The study finds that configurations using Fresnel collectors have the highest exergetic efficiency, while those using a solar tower have the lowest efficiency. Sharing the power block of a combined-cycle plant significantly reduces the investment cost for concentrated solar power. Configurations with direct steam generation produce electricity at the lowest price.
Article
Thermodynamics
Pengcheng Zhao, Jingang Wang, Liming Sun, Yun Li, Haiting Xia, Wei He
Summary: The production of green hydrogen through water electrolysis is crucial for renewable energy utilization and decarbonization. This research explores the optimal electrode configuration and system design of compactly-assembled industrial electrolyzer. The findings provide valuable insights for industrial application of water electrolysis equipment.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
V. Baiju, P. Abhishek, S. Harikrishnan
Summary: Thermally driven adsorption desalination systems (ADS) have gained attention as an eco-friendly solution for water scarcity. However, they face challenges related to low water productivity and scalability. To overcome these challenges, integrating ADS with other desalination technologies can create a small-scale hybrid system. This study proposes integrating ADS with a Thermo Electric Dehumidification (TED) unit to enhance its performance.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
C. X. He, Y. H. Liu, X. Y. Huang, S. B. Wan, Q. Chen, J. Sun, T. S. Zhao
Summary: A decentralized centroid multi-path RC network model is constructed to improve the temperature prediction accuracy compared to traditional RC models. By incorporating multiple heat flow paths and decentralizing thermal capacity, a more accurate prediction is achieved.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Chaoying Li, Meng Wang, Nana Li, Di Gu, Chao Yan, Dandan Yuan, Hong Jiang, Baohui Wang, Xirui Wang
Summary: There is an urgent need to shift away from heavy dependence on fossil fuels and embrace renewable energy sources, particularly in the energy-intensive oil refining process. This study presents an innovative concept called the Solar Oil Refinery, which applies solar energy in oil refining. A solar multi-energies-driven hybrid chemical oil refining system that utilizes solar pyrolysis and electrolysis has been developed, significantly improving solar utilization efficiency, cracking rate, and hydrogen yield.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Chao Ma, Guanghui Wang, Dingbiao Wang, Xu Peng, Yushen Yang, Xinxin Liu, Chongrui Yang, Jiaheng Chen
Summary: This study proposes a bio-inspired fish-tail wind rotor to improve the wind power efficiency of the traditional Savonius rotor. Through transient simulations and orthogonal experiments, the key factors affecting the performance are identified. A response surface model is constructed to optimize the power coefficient, resulting in an improvement of 9.4% and 6.6% compared to the Savonius rotor.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Sina Bahmanziari, Abbas-Ali Zamani
Summary: This paper proposes a new framework for improving electrical energy harvesting from piezoelectric smart tiles through a combination of magnetic plucking, mechanical impact, and mechanical vibration force mechanisms. Experimental results demonstrate a significant increase in energy yield and average energy harvesting time compared to other mechanisms.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Nanjiang Dong, Tao Zhang, Rui Wang
Summary: This study establishes a multiobjective mixed-variable configuration optimization model for a comprehensive combined cooling, heating, and power energy system, and proposes an efficient generating operator to optimize this model. The experimental results show that the proposed algorithm performs better than other state-of-the-art algorithms.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Ahmed E. Mansy, Eman A. El Desouky, Tarek H. Taha, M. A. Abu-Saied, Hamada El-Gendi, Ranya A. Amer, Zhen-Yu Tian
Summary: This study aims to convert office paper waste into bioethanol through a sustainable pathway. The results show that physiochemical and enzymatic hydrolysis of the waste can yield a high glucose concentration. The optimal conditions were determined using the Box-Behnken design, and a blended membrane was used for ethanol purification.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Sven Klute, Marcus Budt, Mathias van Beek, Christian Doetsch
Summary: Heat pumps are crucial for decarbonizing heat supply, and steam generating heat pumps have the potential to decarbonize the industrial sector. This paper presents the current state, technical and economic data, and modeling principles of steam generating heat pumps.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Le Zhang, To-Hung Tsui, Yen Wah Tong, Pruk Aggarangsi, Ronghou Liu
Summary: This study investigates the effectiveness of a current-carrying-coil-based magnetic field in promoting anaerobic digestion of chicken manure. The results show that the applied magnetic field increases methane yield, decreases carbon dioxide production, and reduces the concentration of ammonia nitrogen. Microbial community analysis reveals the enrichment of certain methanogenic genera and enhanced metabolic pathways. Pilot-scale experiments confirm the technical effectiveness of the magnetic field assistance in enhancing anaerobic digestion of chicken manure.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Bo Chen, Ruiqing Ma, Yang Zhou, Rui Ma, Wentao Jiang, Fan Yang
Summary: This paper presents an advanced energy management strategy for fuel cell hybrid electric heavy-duty vehicles, focusing on speed planning and energy allocation. By utilizing predictive co-optimization control, this strategy ensures safe inter-vehicle distance and minimizes energy demand. Simulation results demonstrate the effectiveness of the proposed method in reducing fuel cell degradation cost and overall operation cost.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Fabio Fatigati, Roberto Cipollone
Summary: Organic Rankine Cycle-based microcogeneration systems that use solar sources to generate electricity and hot water can help reduce CO2 emissions in residential energy-intensive sectors. The adoption of a recuperative heat exchanger in these systems improves efficiency, reduces thermal power requirements, and saves on electricity costs.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Lipeng He, Renwen Liu, Xuejin Liu, Xiaotian Zheng, Limin Zhang, Jieqiong Lin
Summary: This research proposes a piezoelectric-electromagnetic hybrid energy harvester (PEHEH) for low-frequency wave motion and self-sensing wave environment monitoring. The PEHEH shows promising power output and the ability to self-power and self-sense the wave environment.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Shangling Chu, Yang Liu, Zipeng Xu, Heng Zhang, Haiping Chen, Dan Gao
Summary: This paper studies a distributed energy system integrated with solar and natural gas, analyzes the impact of different parameters on its energy utilization and emissions reduction, and obtains the optimal solution through an optimization algorithm. The results show that compared to traditional separation production systems, this integrated system achieves higher energy utilization and greater reduction in carbon emissions.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Qingpu Li, Yaqi Ding, Guangming Chen, Yongmei Xuan, Neng Gao, Nian Li, Xinyue Hao
Summary: This paper proposes and studies a piston-type thermally-driven pump with a structure similar to a linear compressor, aiming to eliminate the high-quality energy consumption of existing pumps and replace mechanical pumps. The coupling mechanism of working fluid flow and element dimension is analyzed based on force analysis, and experimental data analysis is used to determine the pump operation stroke. Theoretical simulation is conducted to analyze the correlation mechanism of the piston assembly. The research shows that the thermally-driven pump can greatly reduce power consumption and has potential for industrial applications.
ENERGY CONVERSION AND MANAGEMENT
(2024)