Article
Thermodynamics
Syed Noman Danish, Hany Al-Ansary, Abdelrahman El-Leathy, Mazen Ba-Abbad, Salah Ud-Din Khan, Arslan Rizvi, Jamel Orfi, Ahmed Al-Nakhli
Summary: This paper presents a new solar concentrating system with two novel receivers tested on a novel collector technology. The results show that the system provides higher thermal efficiency and manufacturing ease compared to conventional systems. The economic analysis reveals significant cost savings and a short payback time for the system.
Article
Green & Sustainable Science & Technology
Pramod N. Belkhode, Sagar D. Shelare, Chandrashekhar N. Sakhale, Ravinder Kumar, S. Shanmugan, Manzoore Elahi M. Soudagar, M. A. Mujtaba
Summary: The experiment analyzed the performance of various roof collector materials in a solar updraft tower setup in Nagpur, India, showing significant increases in output power by increasing chimney height and using different collector materials. The experimental results were compared with analytical values, demonstrating good agreement and validating the experimentation.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2021)
Article
Thermodynamics
Kai Liang, Heng Zhang, Haiping Chen, Dan Gao, Yang Liu
Summary: A new type of Annular Fresnel solar concentrator coupled with a circular Fresnel lens (AFSCFL) was developed in the study to improve solar collecting efficiency. Simulation studies and comparison experiments were conducted, showing that AFSCFL has higher thermal efficiency than AFSC under low solar radiation conditions.
Article
Energy & Fuels
Muhammad Saad, Naveed Ahmed, Mariam Mahmood, Muhammad Bilal Sajid
Summary: The study demonstrates that using parabolic chimney wall profiles can improve the efficiency and performance of solar updraft towers. Through numerical modeling and experimental validation, it was found that the convergent effect of the parabolic profiles increased performance and significantly reduced the presence of large eddies near the chimney base. Additionally, considering the impact of chimney diverging angle and collector roof angle, the parabolic chimney wall profiles also significantly increased the power output and collector efficiency.
Review
Environmental Sciences
Pouya Esfanjani, Sajjad Jahangiri, Ali Heidarian, Mohammad Sadegh Valipour, Saman Rashidi
Summary: By utilizing solar-driven cooling systems, the consumption of fossil fuels can be effectively reduced, the potentials of dish collectors and linear Fresnel reflectors in cooling systems can be enhanced, and carbon dioxide emissions can be decreased while increasing production efficiency. In addition, combining solar energy with biomass energy in hybrid systems can also achieve the goal of energy recovery and utilization.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Green & Sustainable Science & Technology
Adriano Silva Martins Brandao, Paulo Renato da Costa Mendes, Julio Elias Normey-Rico
Summary: This paper presents the development of a simplified analytical optical model for Fresnel solar collectors and analyzes the aiming strategies and defocusing strategy. The results show that the simplest solar aiming method is an effective solution with good optical efficiency. The possibility of implementing partial defocusing for control is also demonstrated.
Article
Green & Sustainable Science & Technology
Ridha Chargui, Narjes Bechir, Bourhan Tashtoush
Summary: This paper presents a full-scale experimental evaluation of a new design of solar water heating system. A numerical model is developed to optimize system parameters, evaluate thermal efficiency, and predict system performance. The results show that the system has high thermal efficiency and offers energy savings and reduced electricity bills.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Energy & Fuels
Edouard Montanet, Sylvain Rodat, Quentin Falcoz, Fabien Roget
Summary: Evaluating the heat losses of linear Fresnel concentrator receivers is essential for solar plant efficiency and steam quality management. This study investigates heat losses in a commercial solar power plant using experimental and numerical models. The results show a second-degree polynomial relationship between temperature differences and heat losses, with the influence of wind speed also considered.
Article
Chemistry, Multidisciplinary
Weidong Huang, Bowen Liu
Summary: When precision in calculating the position of the sun is required, assuming the earth's motion to be an ellipse and applying Kepler's equation allows for the calculation of the sun's true position. The method's negligible errors meet the requirements of a concentrated solar tracking system and can be utilized for an extended period.
APPLIED SCIENCES-BASEL
(2022)
Article
Energy & Fuels
Sajjan Raj Keshari, V. P. Chandramohan, Pritam Das
Summary: A three-dimensional turbulent study was conducted on the Manzanares plant in Spain to investigate the effects of collector inclination angle (theta). An optimized theta of 6 degrees was proposed based on various parameters, leading to improved theoretical power and air velocity. Any deviation from this optimal angle resulted in decreased performance. The results were compared with experimental data and showed a favorable agreement.
Article
Green & Sustainable Science & Technology
Rongji Xu, Zhencheng He, Liwei Yang, Shuhui Xu, Ruixiang Wang, Huasheng Wang
Summary: The compound parabolic concentrator is a non-imaging concentrator that can concentrate solar radiation without a tracking system. To increase the effective working hours at high concentration ratio, a tracking solar collector is proposed that integrates the compound parabolic concentrator and flat microchannel tube.
Article
Multidisciplinary Sciences
Arkbom Hailu Asfaw
Summary: The efficiency of renewable energy equipment relies on the mechanism for capturing resources and equipment performance. A manual tracking mechanism for a solar-powered steam injera stove was created, which tracks the sun's path seasonally and daily. The experiment shows a strong positive correlation between solar intensity and the temperature on the receiver surface.
Article
Thermodynamics
Hakim Kebabsa, Mohand Said Lounici, Ahmed Daimallah
Summary: The study introduces a novel concept of annular tower solar chimney power plant to improve the performance of the divergent tower system, showing a significant increase in power output. Simulation results indicate a strong sensitivity of flow behavior, power output and thermal efficiency to the changes in exterior and interior tower radius, with the best performance observed at the exterior radius of 17m and interior radius of 13m.
Article
Optics
Hifsa Shahid, Muhammad Salim Butt, Umer Rashid, Haris Anwer, Hafiz Muhammad Obaid, Farhan Ahmed Butt, Munazza Sadaf, Muhammad Adnan
Summary: This paper proposes a methodology for optimum power point tracking in tandem solar cell technology, utilizing UV solar irradiation, to generate green energy. The methodology avoids the need for complex maximum power point tracking hardware and can serve as an alternative to conventional concentrated photovoltaic systems. The proposed system is optimized for output power stability and finds utility in areas with high levels of UV radiation.
Article
Thermodynamics
Magdalena Barnetche, Luis F. Gonzalez-Portillo, Ruben Abbas
Summary: This study analyzes the optimum integration of latent storage in solar heating and cooling for an industrial process, comparing two configurations. It concludes that connecting the thermal energy storage (TES) in series represents the optimal configuration due to its cost-effectiveness and simplicity compared to the parallel layout.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Gang Wang, Cheng Wang, Zeshao Chen, Peng Hu
Article
Thermodynamics
Gang Wang, Shuqun Niu, Shuyang Yu, Jianqing Lin, Zeshao Chen, Peng Hu
INTERNATIONAL JOURNAL OF THERMOPHYSICS
(2020)
Article
Green & Sustainable Science & Technology
Gang Wang, Fasi Wang, Fan Shen, Tieliu Jiang, Zeshao Chen, Peng Hu
Article
Green & Sustainable Science & Technology
Gang Wang, Yubo Yao, Botong Wang, Peng Hu
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2020)
Article
Thermodynamics
Gang Wang, Shuyang Yu, Shuqun Niu, Zeshao Chen, Peng Hu
APPLIED THERMAL ENGINEERING
(2020)
Article
Thermodynamics
Peng Hu, Yi-Ran Jiang, Gao-Wei Zhang, Zhen Miao
Summary: The study indicates that the expander's inlet and outlet pressure, heat transfer coefficient, and logarithmic mean temperature difference have significant effects on system thermal efficiency and cooler length. Both thermal efficiency and cooler length should be fully considered in the design of the system operating conditions.
JOURNAL OF THERMAL SCIENCE AND ENGINEERING APPLICATIONS
(2021)
Article
Thermodynamics
Gang Wang, Junhui Yin, Jianqing Lin, Zeshao Chen, Peng Hu
Summary: A novel nuclear-solar complementary power system utilizing heavy liquid metal is proposed in this study, which can produce electricity and freshwater. The system shows high efficiency and cost savings according to simulations and analysis.
APPLIED THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Yi-Ran Jiang, Peng Hu
Summary: This study investigated the cooling heat transfer performance of s-R1234ze(E) in horizontal helically coiled tubes through numerical simulation, revealing heat transfer oscillation under certain conditions and proposing a piecewise correlation for heat transfer. Additionally, the varying angles between gravitational buoyancy and centrifugal force in horizontal helical tubes result in uneven temperature distribution of the fluid.
JOURNAL OF THERMAL SCIENCE AND ENGINEERING APPLICATIONS
(2021)
Article
Thermodynamics
Nan Zhang, Peng Hu, Long-xiang Chen, Ming-hou Liu, Qi Chen
Summary: The critical temperatures and pressures of the binary mixture of 1,1,1-trifluoroethane (HFC-143a) + trans-1,3,3,3-tetrafluoropropene (HFO-1234ze(E)) were experimentally measured using a static method with uncertainties estimated to be less than 6.2 kPa, 0.02 K, and 0.003 for pressure, temperature, and mole fraction, respectively. The experimental critical properties were correlated using the Redlich-Kister method and showed good agreement with the experimental data.
JOURNAL OF CHEMICAL AND ENGINEERING DATA
(2021)
Article
Thermodynamics
Zirui Wu, Lingfeng Shi, Rui Sun, Hua Tian, Xuan Wang, Peng Hu, Gequn Shu
Summary: CO2-based binary mixtures are promising working fluids in refrigeration and power cycles. This study develops a temperature independent prediction model based on vdW mixing rules for the vapor-liquid phase equilibrium of CO2-based binary mixtures. The model shows excellent predictive performance compared to other models.
INTERNATIONAL JOURNAL OF REFRIGERATION
(2022)
Article
Thermodynamics
Ya-Nan Ma, Peng Hu, Cheng-Qi Jia, Ze-Rui Wu, Qi Chen
Summary: This study investigates the feasibility and performance optimization of using xenon and krypton as additives in the supercritical carbon dioxide recompression Brayton cycle (SCO2RBC). The results show that the supercritical CO2/krypton cycle outperforms other cycles and can achieve cost reduction through suitable decision variables.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Cheng-Qi Jia, Peng Hu, Min-Shan Zhou, Yi-Ran Jiang, Pan -Pan Zhao, Lei Jia
Summary: This study numerically simulated the flow and heat transfer characteristics of supercritical R1233zd(E) in horizontal cooling tubes and discussed the buoyancy effect and applicability. A new heat transfer correlation was developed for supercritical R1233zd(E).
APPLIED THERMAL ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Dongliang He, Zerui Wu, Yao Lin, Guoyuan Li, Zhanhao Zhang, Yuheng Qiu, Yanan Ma, Chengqi Jia, Shan Wei, Guangzhu Shang, Xingyue Lei, Peng Hu, Liqun He
Summary: This article introduces a power-free and user-friendly microfluidic device for preparing small, monodisperse microdroplets. The device uses simple hand-operated syringes and capillaries to generate vacuum and fluid on site, allowing for flexible control of droplet size by adjusting micropores and vacuum levels. Unlike traditional methods, this self-activated device eliminates the need for external power supply and reduces sample/reagent consumption, simplifying operations and saving costs, making it suitable for immediate diagnostic testing or field trace substance detection.
JOURNAL OF FLOW CHEMISTRY
(2023)
Article
Thermodynamics
Yi-Ran Jiang, Peng Hu, Cheng-Qi Jia, Pan-Pan Zhao, Lei Jia
Summary: This study simulated the application of helically coiled tube with internally ribbed roughness and found the influence of different structural parameters on suppressing circumferential non-uniformity and axial oscillation. The comparison between internally ribbed roughness and concaved roughness was conducted. Additionally, the effects of spiral roughness, centrifugal force, and gravitational buoyancy force on flow field distributions were also revealed.
APPLIED THERMAL ENGINEERING
(2022)
Article
Thermodynamics
Liang-Hui Zhi, Peng Hu, Long-Xiang Chen, Gang Zhao
APPLIED THERMAL ENGINEERING
(2020)
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.
