Article
Energy & Fuels
Haodong Huang, Meng Lin
Summary: High-temperature solar receivers are essential components in concentrated solar energy systems, and a numerical model has been developed to evaluate their thermal conversion behavior under different design parameters. The study found that windowless receivers generally have higher optical efficiency compared to window receivers, but in some cases, window receivers can surpass windowless receivers. Optimization of porosity and pore diameter can enhance the performance of both types of receivers.
Article
Thermodynamics
M. Faizan, A. Almerbati, B. S. Pilbas
Summary: This study investigates the design and performance of a solar volumetric receiver, taking into account the 3D connectivity of the pore sites. The research demonstrates that increasing Reynolds numbers can improve the thermal performance of the receiver.
APPLIED THERMAL ENGINEERING
(2022)
Article
Energy & Fuels
Cyprien Heisel, Cyril Caliot, Thierry Chartier, Sylvain Chupin, Patrick David, Denis Rochais
Summary: The study optimized the structure of solar volumetric receivers used in Solar Thermal Power Plants (STPP) using a digital design approach, demonstrating their stability and reliability at high temperatures through experimental validation of SiC structures manufactured with 3D printing.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2021)
Article
Energy & Fuels
Chen Kang, Wang Xiao, Chen Pengfei, Wen Long
Summary: Numerical simulation study reveals that metal foam absorbers can effectively reduce pressure loss and improve overall performance index PEC.
Article
Thermodynamics
X. Randez, F. Zaversky, D. Astrain
Summary: A new active volumetric receiver prototype was used in this study to evaluate its thermal performance. Numerical and experimental investigations were conducted on the rotating disk cooling and convective heat transfer from the disks to a crossflow of air. The results show promising thermal performance of the lab-scale receiver and a potential improvement in efficiency compared to existing volumetric receivers.
APPLIED THERMAL ENGINEERING
(2022)
Article
Energy & Fuels
Tao Li, Lingtian Xie, Boyang Zhao, Wenran Shen, Yun Liu
Summary: In this study, six types of porous volumetric receiver structures were designed and their effects on heat transfer performance were analyzed. The result showed that the drum-type structure had the best heat transfer performance, with the fluid outlet average temperature being significantly increased compared to other structures.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2023)
Article
Thermodynamics
Lianxuan Wu, Bachirou Guene Lougou, Boshu Jiang, Hao Zhang, Yanming Guo, Boxi Geng, TianTian Yan, Piotr Lapka, Yong Shuai
Summary: Solar energy efficient utilization is an effective way to close carbon cycles and remediate the environment. Understanding the spectrum and intensity features of induced light is crucial for optimizing solar systems. This study discusses radiation transfer processes, clarifies photothermal effect principles, and presents a numerical model for estimating spectra and intensity transfer characteristics in solar reactors.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Thermodynamics
A. Leroy, B. Bhatia, J. Sircar, E. N. Wang
Summary: Polyethylene aerogels (PEAs) have unique optical and thermal properties that make them ideal for applications requiring infrared-transparent thermal insulation. By studying thermal transport in PEAs, we find that gas conduction and radiative transfer are the dominant heat transfer mechanisms. We propose several ways to improve the thermal insulation performance, such as reducing pore size, gas pressure, and using lower thermal conductivity gases.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Thermodynamics
N. A. Cisneros-Cardenas, R. A. Perez-Enciso, C. A. Perez-Rabago, R. A. Calleja-Valdez, V. M. Maytorena-Soria, R. Garcia-Gutierrez, R. E. Cabanillas-Lopez
Summary: This paper presents an experimental assessment of a reactor-receiver system with different receivers. The study evaluates the performance of two SiC receivers with different PPI sizes under high-temperature HTF conditions. The authors calculated the thermal efficiency and compared it with similar solar concentration technologies. The results showed that a 20 PPI receiver achieved the highest temperature, and the paper also provided recommendations to improve energy conversion efficiency.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Xuewei Ni, Bingxin Liu, Hao Feng, Ying Zhang, Dong Liu, Qiang Li
Summary: This study proposes a unique design method that combines the optimization of geometric parameters of porous receivers to maximize the combination of volumetric convection coefficient, effective solid-phase thermal conductivity, and optical thickness, thus improving the efficiency of heat utilization.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xue Chen, Jinxin Lyu, Chuang Sun, Xinlin Xia, Fuqiang Wang
Summary: A pore-scale flow and heat transfer model is developed to investigate the thermal and hydrodynamic performance of a volumetric solar receiver under highly concentrated irradiation. Three-dimensional simulations are conducted based on the Weaire-Phelan structure modeling an open-cell ceramic foam absorber. The study predicts and compares the energy conversion characteristics of two ceramic materials (SiC and Al2O3). Various control approaches for the optical property of the solar absorber are introduced and analyzed. Results show that SiC absorber outperforms Al2O3 absorber and the optical property of the absorber front region significantly affects overall performance. Decreasing absorptivity and spectral selective design have positive impacts, with spectral selective improvement showing the highest effectiveness. Additionally, adding a porous fused silica as the front absorber layer effectively shifts the high-temperature area inward with a slight decrement in efficiency, and honeycomb structure exhibits advantages over foam silica.
Article
Green & Sustainable Science & Technology
Xiao-Lei Li, Xin-Lin Xia, Chuang Sun, Zhi-Hao Chen
Summary: A solar receiver with an annular inner window is proposed to improve temperature uniformity of the absorber, the numerical model analysis shows that installing an annular window can reduce the temperature difference in the absorber and increase the thermal efficiency.
Article
Energy & Fuels
Chao Fan, Xin-Lin Xia, Yang Li, Xiuli Liu, Wei Du
Summary: An adjoint algorithm is used to optimize the structure of tomographied porous solar receiver for reducing pressure drop. The results show that the pressure drop of the porous receiver decreased significantly after optimization, while the comprehensive efficiency remains unchanged.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2023)
Article
Energy & Fuels
Shen Du, Ming-Jia Li, Ya-Ling He, Sheng Shen
Summary: A porous volumetric solar receiver using molten salt as the heat transfer fluid shows higher thermal efficiency compared to traditional air receivers, with a 9.6% improvement at an outlet temperature of 1000 K. The molten salt receiver has a large heat storage capacity and efficient convective heat transfer, requiring a smaller mass flow rate and resulting in significantly smaller pressure drop. Additional research on this type of receiver is outlined for experimental verification and application with high temperature molten salt.
Review
Thermodynamics
Sukumar Pati, Abhijit Borah, Manash Protim Boruah, Pitambar R. Randive
Summary: This paper provides a comprehensive review of the use of porous media in thermal systems, discussing the effects of different modelling approaches on heat transfer and entropy generation, and critically evaluates the applicability of LTE and LTNE methods.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2022)
Article
Thermodynamics
Xue Chen, Xin-lin Xia, Xian-hong Dong, Gui-long Dai
ENERGY CONVERSION AND MANAGEMENT
(2015)
Article
Thermodynamics
Xue Chen, Xin-Lin Xia, Hua Liu, Yang Li, Bo Liu
ENERGY CONVERSION AND MANAGEMENT
(2016)
Article
Thermodynamics
Xue Chen, Fuqiang Wang, Xuewei Yan, Yafen Han, Ziming Cheng, Zhu Jie
Article
Thermodynamics
Xue Chen, Fuqiang Wang, Yafen Han, Ruitian Yu, Ziming Cheng
ENERGY CONVERSION AND MANAGEMENT
(2018)
Article
Energy & Fuels
Xue Chen, Fuqiang Wang, Xuewei Yan, Ziming Cheng, Yafen Han, Zhu Jie
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)