Article
Energy & Fuels
Yunkun Tao, Jianbo Bai, Rupendra Kumar Pachauri, Yue Wang, Jian Li, Harouna Kerzika Attaher
Summary: The formulation of a fundamentally new equation through optimizing parameterization of actual rear-shading mismatch losses guides the deployment of revised bifacial gain (BGr)-maximized bifacial systems around the world.
Article
Energy & Fuels
Michelle Kitayama da Silva, Mehreen Saleem Gul, Hassam Chaudhry
Summary: This study reviews the degradation factors of conventional monofacial and bifacial photovoltaic modules, finding that microcracking, encapsulant discoloration, and light induced degradation have similar effects on both, while potential induced degradation affects bifacial modules more. Additionally, bifacial modules have a slower degradation rate compared to monofacial modules under different solar radiation conditions.
Article
Energy & Fuels
Carlos Rossa, Francisco Martinez-Moreno, Eduardo Lorenzo
Summary: The study on mismatch losses in PV arrays examined two different PV generators and found that improvements in technology led to a reduction in MML. The MML component in bifacial PV arrays is higher due to non-uniform rear irradiance, and the aging of monofacial PV arrays results in an annual increase in MML.
PROGRESS IN PHOTOVOLTAICS
(2021)
Article
Energy & Fuels
Gautam Raina, Siddharth Mathur, Sunanda Sinha
Summary: This study presents a comparative analysis of the performance of bifacial and monofacial photovoltaic systems under partial shading scenarios. The results show that bifacial technology consistently outperforms conventional monofacial technology in these conditions.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Energy & Fuels
Annie C. J. Russell, Christopher E. Valdivia, Cedric Bohemier, Joan E. Haysom, Karin Hinzer
Summary: This article introduces DUET, a bifacial PV performance model that calculates optical and electrical performance based on a physically representative array geometry. DUET's shading algorithm combines a 3-D VF model with deterministic ray-object intersections to capture 2-D shade-inclusive irradiance profiles while minimizing computational cost. Validation against open-access system measurements shows that DUET's modeled bifacial energy yield agrees well with measured data, and DUET's simulated rear irradiance has low errors compared to other software tested at the same site. DUET provides computationally efficient bifacial performance modeling with geographic, temporal, and structural specificity, which can be used to determine loss factors for other performance models or directly optimize system design.
IEEE JOURNAL OF PHOTOVOLTAICS
(2022)
Article
Energy & Fuels
D. Prince Winston, G. Karthikeyan, M. Pravin, O. JebaSingh, A. G. Akash, S. Nithish, S. Kabilan
Summary: Solar energy is a clean energy source that will be crucial in future power production. The impact of partial shading on PV systems is a major concern, with mismatch losses affecting overall performance. The proposed technique aims to overcome this issue and improve power generation from the PV array.
Article
Optics
Priya Ranjan Satpathy, Belqasem Aljafari, Sudhakar Babu Thanikanti
Summary: Partial shading among solar photovoltaic (PV) modules leads to a reduction in power generation. This paper proposes a new module electrical reconfiguration technique to mitigate the effect of partial shading and enhance power output. The technique is a fixed electrical reconnection strategy based on a proposed algorithm and does not require sensors or switches.
Article
Green & Sustainable Science & Technology
S. Suriya Kala, D. Prince Winston, M. Pravin, G. Sakthivel
Summary: This article introduces a narrative move towards maximizing power augmentation in poly-crystalline solar photovoltaic (PV) modules through the modified Total Cross Tied (TCT) interlink connection method. Power extraction from sustainable energy sources is crucial as they are abundant, environmentally friendly, safe, and renewable. However, the output power generated from solar photovoltaic arrays can be reduced by up to 60% due to shading effects. Various strategies have been developed to overcome partial shading effects, and in this proposed method, PV cells in modules are connected via a modified TCT fashion with a bypass diode through each row.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2023)
Article
Energy & Fuels
Eduardo Abdon Sarquis Filho, Carlos Alberto Ferreira Fernandes, Paulo Jose da Costa Branco
Summary: Mismatch in photovoltaic arrays can lead to performance loss and current simulation tools have limitations in handling mismatch conditions. This paper proposes a new simulation framework that can accurately reproduce mismatch conditions and calculate the response of PV arrays.
Article
Energy & Fuels
Andres Calcabrini, Raoul Weegink, Patrizio Manganiello, Miro Zeman, Olindo Isabella
Summary: This study explores how changing the module topology can increase the electrical output of photovoltaic systems under partial shading, suggesting that the shading tolerance of conventional solar modules can be significantly improved when shading is caused by nearby obstructions.
Article
Energy & Fuels
Xinyi Chen, Yu Shen, Tamas Kerekes, Yiye Wang, Kanjian Zhang, Haikun Wei
Summary: This article develops a comprehensive mathematical PV model based on a single-diode model, taking into account the effects of nonuniform complex shading patterns on PV behavior. The proposed model is validated in experimental tests and shows high accuracy.
IEEE JOURNAL OF PHOTOVOLTAICS
(2023)
Article
Energy & Fuels
Shuto Tsuchida, Yuki Tsuno, Daisuke Sato, Takashi Oozeki, Noboru Yamada
Summary: This study analyzes the albedo dependence of the bifacial gain losses in bifacial PV modules due to inherent partial shading caused by rear-side support structures. The results demonstrate that the bifacial gain decreases nonlinearly at high albedo when the beam is closely attached to the rear side of the module. The study also identifies the mismatch loss caused by each part of the module's support structure.
IEEE JOURNAL OF PHOTOVOLTAICS
(2023)
Article
Thermodynamics
Oussama Hachana, Belkacem Aoufi, Giuseppe Marco Tina, Mohamed Amine Sid
Summary: A novel hybrid algorithm is proposed to accurately identify the unknown parameters of photovoltaic modules/strings, with a larger search range and higher computational efficiency, enabling more accurate parameter identification under different operating conditions.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Thermodynamics
T. Hariharasudhan, D. Prince Winston, M. Palpandian, M. Pravin
Summary: This paper compares the effects of partial shading on the performance of PPVM and BPVM, and verifies that BPVM has 26% less loss than polycrystalline under frontside partial shading.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Review
Energy & Fuels
Alexander Abramovitz, Doron Shmilovitz
Summary: Since the industrial revolution, the world's economy has heavily relied on fossil fuels, leading to environmental issues. The growing awareness of environmental problems has sparked interest in clean and sustainable energy sources, with solar energy standing out as a promising solution.
Review
Energy & Fuels
Gautam Raina, Sunanda Sinha
ENERGY STRATEGY REVIEWS
(2019)
Article
Energy & Fuels
Gautam Raina, Rohit Vijay, Sunanda Sinha
Summary: The study focuses on optimizing the installation of bifacial PV devices, finding the optimal parameter setting to maximize power generation. Through experiments and validation, it is shown that a combination of beta angle, module elevation, and azimuth angle contributes to higher output efficiency and performance of the bifacial PV module.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Energy & Fuels
Gautam Raina, Siddharth Mathur, Sunanda Sinha
Summary: This study presents a comparative analysis of the performance of bifacial and monofacial photovoltaic systems under partial shading scenarios. The results show that bifacial technology consistently outperforms conventional monofacial technology in these conditions.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Green & Sustainable Science & Technology
Gautam Raina, Rohit Vijay, Sunanda Sinha
Summary: This research investigates the accuracy of extracting unknown parameters using a modified IEC 60891 procedure in varying ranges of irradiance and temperature conditions. The results show that the errors are minimal (<1%) for P-MAX and V-OC values, but increase (1%-9%) for I-SC, I-MP, and V-MP values under large variations in irradiance and temperature conditions (>300 W/m(2)).
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Green & Sustainable Science & Technology
Gautam Raina, Sunanda Sinha, Gaurav Saini, Shubham Sharma, Prashant Malik, N. S. Thakur
Summary: This research work focuses on studying the impact of module temperature on the conversion efficiency of photovoltaic systems. A passive cooling system with fins has been designed and evaluated through experiments and simulations. The results show that the cooling system can effectively reduce module temperatures and improve overall performance, especially in hot climates.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Engineering, Multidisciplinary
Gautam Raina, Shubham Sharma, Sunanda Sinha
Summary: This study quantifies the impact of dust accumulation on power generation and bifacial gain through experiments and analyzes the correlation between dust deposition rate and environmental parameters. The results show that dust has a significant effect on the performance of PV modules.
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
(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)