Article
Thermodynamics
Z. Ebrahimpour, Seyyed Ali Farshad, M. Sheikholeslami
Summary: This paper examines the exergy loss and hydrothermal analysis of the Linear Fresnel Reflector (LFR) unit using the finite volume method. Multiple mirrors are used to guide solar radiation into the parabolic-shaped receiver. The radiation model is utilized to simulate the radiation mode. The aim is to minimize heat losses from the receiver for optimal design. The outputs are summarized as contours of incident radiation, isotherm, and streamline.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2022)
Review
Chemistry, Analytical
Raul Alejandro Martinez-Sanchez, Juvenal Rodriguez-Resendiz, Jose Manuel Alvarez-Alvarado, Idalberto Macias-Socarras
Summary: This article explores the patents of solar energy technologies in the organic Rankine cycle (ORC) applications. It highlights the lack of updated information regarding the number of published patents, International Patent Classification (IPC) codes, technology life cycle status, and the most relevant patented developments. The study investigates patents published between January 2010 and May 2022 and presents the trends in patent development for each technology. China is identified as the country with the highest number of published patents in this field.
Article
Energy & Fuels
Ali Ahmadpour, Abdolmajid Dejamkhooy, Hossein Shayeghi
Summary: This paper investigates the optimization of the construction of a Linear Fresnel Reflector Solar Concentrator (LFRSC) to improve its efficiency. The primary mirrors are slightly curved to focus the rays, and a novel structure for the secondary reflector is proposed. Simulation using the Monte Carlo Ray Tracing (MCRT) and optimization using the Improved Prey Predator Optimization Algorithm (IPPOA) are conducted. The results show that the small-sized model is the most cost-efficient, while the fully optimized model achieves the highest efficiency.
Article
Green & Sustainable Science & Technology
Zongxian Duan, Wei An
Summary: The utilization of offset-axis mirrors in linear Fresnel micro-concentrators can significantly improve ground utilization ratio and efficiency, providing a more compact design compared to conventional central-axis mirrors. This approach shows a promising potential to enhance solar energy harvesting efficiency in building integrated PV/T applications.
Article
Energy & Fuels
A. Barbon, J. A. Fernandez-Rubiera, L. Martinez-Valledor, A. Perez-Fernandez, L. Bayon
Summary: The new open-loop solar tracking system for a small-scale linear Fresnel reflector is able to automatically position itself with an accuracy of +/- 0.006 degrees, providing 16.64% more energy and a 78.46% higher energy-to-area ratio compared to the classic tracking system.
Article
Energy & Fuels
Z. Ebrahimpour, M. Sheikholeslami
Summary: The study discusses a new design for domestic usage where mirrors are used as primary reflectors, with the implementation of trapezoidal tanks and the use of alumina-water as the operating fluid to enhance optical performance. The analysis also examines the impact of twisted tapes and different parameters on various scenarios, while reporting on the irreversibility and thermal behavior of each case.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2021)
Article
Engineering, Environmental
Bing Mei, Yahong Qin, Mohammad Taghavi
Summary: This paper presents a novel energy conversion system that utilizes waste heat from molten carbonate fuel cells and concentrated solar collectors to generate electricity and facilitate carbon dioxide separation process. The results show that the hybrid system has an electrical efficiency of 58.02%, an exergy efficiency of 44.2%, and a high carbon dioxide removal efficiency.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2021)
Article
Thermodynamics
Hani Beltagy
Summary: This paper aims to develop a new shape of secondary reflector for Fresnel linear concentrator. Through parameter optimization, the optimal configuration of the secondary reflector and other elements has been determined, improving the efficiency of light utilization and energy collection.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Green & Sustainable Science & Technology
Mokhtar Ghodbane, Zafar Said, Arun Kumar Tiwari, L. Syam Sundar, Changhe Li, Boussad Boumeddane
Summary: The study conducted a numerical investigation of an industrial process in the El-Oued region of Algeria using a linear Fresnel reflector (LFR) coupled with a Therminol 66 oil storage tank. By utilizing different concentrations of MXene/silicone oil nanofluids, the study showed improvements in thermal conductivity and thermal efficiency, cost reduction, and reduction in greenhouse gas emissions.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Optics
Zhengbo Zhu, Le Yang, Donglin Ma
Summary: In a concentrating photovoltaic (CPV) system, designing a freeform mirror array is proposed to achieve uniform illumination and high optical performance. Each mirror can generate a uniform illumination pattern on the CPV cell. Its effectiveness is demonstrated through design examples and analysis of factors affecting the optical performance.
Article
Multidisciplinary Sciences
Syed Aun Ali Rizvi, Muhammad Uzair
Summary: This study investigates the geometry and configuration of secondary reflectors in a solar parabolic trough collector. The optical efficiency is analyzed using four different profiles of secondary reflectors. Ray-tracing software is used to simulate and analyze their effects on flux uniformity and intensity. The results show that the parabolic reflector has the highest efficiency, increasing solar flux by 37% with high uniformity. Triangular reflectors enhance solar flux by 28% but have weaker flux distribution. The flat-parabolic reflector is the second best option, improving flux by 32% and providing improved uniformity. The parabolic-parabolic segmented reflector has the lowest efficiency due to the non-uniformity caused by the divergence of its focal points.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Green & Sustainable Science & Technology
Sebastian Taramona, Pedro Angel Gonzalez-Gomez, Javier Villa Briongos, Jesus Gomez-Hernandez
Summary: This paper introduces the configuration and optimization of a linear beam-down solar field, proposing a novel secondary reflector composed of multiple flat mirrors to overcome the limitations of the previous hyperbolic reflector. A model is developed to calculate the optimal layout and efficiency of the solar field, and two dimensionless parameters are proposed to simplify the design process. The results show significant improvements in concentration and optical efficiency for the novel solar field.
Article
Energy & Fuels
Alaric Christian Montenon, Rowida Meligy
Summary: The modelling of Linear Fresnel Collectors is crucial for accurate yield prediction and designing appropriate controller commands. This study compares two alternative modelling methodologies based on experimental data from a solar system in Cyprus. The RealTrackEff model, an improved ISO9806 modelling, shows the least error in temperature prediction.
Article
Thermodynamics
Gang Wang, Zijun Ge, Jianqing Lin
Summary: The current study evaluates the performance of a novel photovoltaic thermal system using a compact linear Fresnel reflector and a nanofluids beam splitting device. The system exhibits high optical efficiency and can enhance thermal efficiency by adjusting the flow velocity and temperature of the nanofluids.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Thermodynamics
Xiaoyan Zhao, Zhuang Chen, Suying Yan, Tingzhen Ming, Ze Wu, Rui Ma
Summary: The study investigated the impact of dust accumulation on the reflectivity of a linear Fresnel reflector, finding that an increase in dust density over time resulted in a decrease in relative reflectivity. Additionally, the dust density increased while the reflectivity decreased with a decrease in mirror tilt angle. The main component of the dust particles was found to be SiO2, and a model was proposed to predict the influence of natural dust accumulation on the relative reflectivity of the reflector.
JOURNAL OF THERMAL SCIENCE
(2021)
Article
Thermodynamics
S. Z. Xu, R. Z. Wang, L. W. Wang, J. Zhu
Article
Construction & Building Technology
Hongyu Bai, Jie Zhu, Junze Chu, Xiangjie Chen, Yuanlong Cui, Yuying Yan
ENERGY AND BUILDINGS
(2019)
Review
Thermodynamics
Yuanlong Cui, Jie Zhu, Ssennoga Twaha, Junze Chu, Hongyu Bai, Kuo Huang, Xiangjie Chen, Stamatis Zoras, Zohreh Soleimani
ENERGY CONVERSION AND MANAGEMENT
(2019)
Review
Thermodynamics
Yuanlong Cui, Jie Zhu, Stamatis Zoras, Xiangjie Chen, Haixia Bi, Yaning Qiao, Zohreh Soleimani
ENERGY CONVERSION AND MANAGEMENT
(2019)
Article
Thermodynamics
Wei Li, Yuhao Lin, Kan Zhou, Junye Li, Jie Zhu
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2019)
Article
Energy & Fuels
Hongyu Bai, Jie Zhu, Xiangjie Chen, Junze Chu, Yuanlong Cui, Yuying Yan
Article
Thermodynamics
Zengwen Li, Hongxia Zhao, Jitian Han, Xinli Wang, Jie Zhu
Article
Green & Sustainable Science & Technology
Yuanlong Cui, Jie Zhu, Fanran Meng, Stamatis Zoras, Jon McKechnie, Junze Chu
Article
Thermodynamics
Yuanlong Cui, Jie Zhu, Stamatis Zoras, Yaning Qiao, Xin Zhang
Review
Green & Sustainable Science & Technology
Yuanlong Cui, Jie Zhu, Stamatis Zoras, Jizhe Zhang
Summary: This study provides an overview of the state-of-the-art in solar photovoltaic/thermal systems with different loop-pipe configurations and nanoparticles. It explores the impacts of critical parameters on system performance and discusses the structure of solar cells, micro-thermometry analysis, and recycling process. The study demonstrates that advanced configurations and nanofluids can significantly enhance energy efficiency compared to traditional systems.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Review
Green & Sustainable Science & Technology
Yuanlong Cui, Jie Zhu, Stamatis Zoras, Lin Liu
Summary: This paper provides a comprehensive assessment of the DPEC technology in terms of energy, economic, and environmental aspects. It compares key performance indicators such as coefficient of performance, cooling capacity, and cooling effectiveness between different climate conditions and flow configurations. Additionally, it discusses the economic evaluation approaches and environmental impact assessments of the DPEC system.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Thermodynamics
Tugberk Hakan Cetin, Jie Zhu, Ekrem Ekici, Mehmet Kanoglu
Summary: This paper proposes a combined power and cooling cogeneration system powered by geothermal energy and connected with the grid. The system integrates a turbine ejector cogeneration cycle, an air liquefaction cycle, a liquid air direct expansion cycle, and a cryogenic organic Rankine cycle. The system is able to produce a considerable amount of power and cooling capacity simultaneously, with different functionalities under different operation modes.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Green & Sustainable Science & Technology
Yuanlong Cui, Jie Zhu, Fan Zhang, Yiming Shao, Yibing Xue
Summary: This study reviews the recent advancements in the application of phase change materials in solar photovoltaic thermal technology. The study examines the impact of different tube configurations, working fluids, and thermal regulation strategies on the performance of the system. The findings suggest that incorporating phase change materials can improve the electrical and thermal efficiency of the system, while reducing costs.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Energy & Fuels
Yuanlong Cui, Jie Zhu, Stamatis Zoras, Khalid Hassan, Hui Tong
Summary: This study develops a mathematical model of a PV/T module integrated with optical filtration and MXene-enhanced PCM technology, which improves the thermal and electrical efficiency of solar energy. The results show that by optimizing the height and concentration of the optical filtration channel, the overall thermal efficiency of the system can be enhanced.
Article
Thermodynamics
Tugberk Hakan Cetin, Jie Zhu
Summary: This paper proposes a self-condensing sCO(2) recompression system with a vortex tube, which can achieve CO2 condensation without the need for a low temperature heat sink and recompression near the critical point, thus improving the system's energy and exergy efficiencies.
ENERGY CONVERSION AND MANAGEMENT
(2022)
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)
