Article
Green & Sustainable Science & Technology
Faisal Hassan, Furqan Jamil, Abid Hussain, Hafiz Muhammad Ali, Muhammad Mansoor Janjua, Shahab Khushnood, Muhammad Farhan, Khurram Altaf, Zafar Said, Changhe Li
Summary: This review discusses the applications of phase change materials (PCMs) in energy conservation and thermal control. Various methods, such as adding highly thermal conductivity nanoparticles and encapsulation, have been used to improve the low thermal conductivity of PCMs. PCMs have a wide range of applications, including in photovoltaic, thermal management, and food packaging. Based on analysis of recent literature, phase transition temperature, phase transition enthalpy, and thermal conductivity are identified as important parameters for selecting suitable PCMs.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Energy & Fuels
Morteza Motevalizadeh, Amin Rooberahan, Mohammad Sanaee Namaghi, Majid Mohammadi, Mohammad Passandideh-Fard, Mohammad Sardarabadi
Summary: This study investigates the application of PCM-assisted heat pipes in cooling portable computers. The results show that the melting point of PCM and the input heat flux have a significant impact on the cooling performance, and forced convection improves the cooling efficiency. In addition, image processing can be used to estimate the liquid fraction.
JOURNAL OF ENERGY STORAGE
(2022)
Review
Chemistry, Multidisciplinary
Ghada Ben Hamad, Zohir Younsi, Hassane Naji, Fabien Salauen
Summary: The paper reviews the properties of PCMs, studies on microencapsulation techniques, and emphasizes critical examination of existing techniques and factors influencing microcapsule performance. It investigates microencapsulation efficiency and limitations of each technique, highlighting optimal operating conditions for each process.
APPLIED SCIENCES-BASEL
(2021)
Article
Energy & Fuels
Claudia Fabiani, Carolina Santini, Marco Barbanera, Tommaso Giannoni, Gianluca Rubino, Franco Cotana, Anna Laura Pisello
Summary: In this study, different phase change materials (PCMs) were incorporated into gypsum panels by stabilizing them in biochar and lignin through vacuum impregnation technique. The goal was to produce an environmentally friendly shape-stabilized material that can be easily integrated into gypsum-based building components. The thermophysical performance and long-term stability of the obtained compounds were analyzed using various techniques. The results showed promising thermal buffer capability of the shape-stabilized samples, with a higher impregnation rate for a paraffin with a melting temperature of 21 degrees C. The samples exhibited relatively stable behavior for applications within typical local boundary conditions.
JOURNAL OF ENERGY STORAGE
(2023)
Review
Energy & Fuels
Surajudeen Sikiru, Temidayo Lekan Oladosu, Temitope Ibrahim Amosa, Sanusi Yekinni Kolawole, Hassan Soleimani
Summary: This study provides a cutting-edge review of recent literature on thermal energy storage systems for solar thermal management. It also gives an in-depth overview of solar thermal storage mechanisms and reviews the application of phase change materials (PCM) and photovoltaic performance indicator variables. The study summarizes the research trend and research gap in PCM adoption to photovoltaic energy harnessing.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Materials Science, Composites
Guang-Zhong Yin, Jose Luis Diaz Palencia, De-Yi Wang
Summary: A novel fully bio-based polymer PGI was designed and synthesized efficiently by solvent-free polycondensation. The PEG was used as a phase change material working substance and tightly encapsulated in the PGI supporting material for high form stability and phase change enthalpies. The process allows for convenient adjustment of phase change temperatures and enthalpies by regulating PEG content and molecular weight, facilitating efficient mass production with eco-friendly nature, high efficiency and low cost.
COMPOSITES COMMUNICATIONS
(2021)
Article
Materials Science, Composites
Xianjun Ji, Pengwei Liu, Chendong Qiu, Lu Weng, Jiajun Hu, Renzhong Wei, Yi Zhang, Weisheng Sun, Xi Guo
Summary: In this study, thermal energy storage (TES) composites with excellent thermal performance and acceptable mechanical properties were fabricated. By using bamboo charcoal encapsulating polyethylene glycol as the phase change material and low-density polyethylene as the matrix, the problem of leakage and short service life in conventional phase change materials was effectively solved.
POLYMER COMPOSITES
(2023)
Article
Chemistry, Physical
Muhammad Shaban, Talha Irfan Khan, Muhammad Anwar, Meshal Alzaid, Rakan Alanazi
Summary: This study focuses on enhancing the charging rate and the uniformity of the melting rate in thermal energy storage units (TESU) based on phase change materials (PCM). By symmetrically placing two horizontal partial fins in the PCM-based TESU, the melting rate and the charging rate can be improved effectively.
Article
Green & Sustainable Science & Technology
Sheng Zhang, Pawel Oclon, Jiri Jaromir Klemes, Piotr Michorczyk, Kinga Pielichowska, Krzysztof Pielichowski
Summary: This paper introduces the recent developments in Renewable Energy Systems for building heating, cooling and electricity production with thermal energy storage. The buildings contribute about 40% of total energy consumption, with significant potential for primary energy savings. The application of various Renewable Energy based systems is discussed including: the presentation of Hybrid Renewable Energy bases systems, methodology for their design and methods for the optimisation of Buildings RES.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Energy & Fuels
Guanhua Zhang, Yuqian Guo, Zhiqiang Liu, Wei Lu, Xiaoyu Yan, Yanping Du
Summary: Through experiments and simulations, it was found that phase change composite boards can delay the occurrence of indoor high temperatures, reduce indoor maximum temperatures, and decrease energy consumption.
FRONTIERS IN ENERGY RESEARCH
(2021)
Article
Construction & Building Technology
Hafiz Muhammad Ali
Summary: This manuscript discusses a proposed method for storing solar energy and highlights the importance of PCMs, nanofluids, and molten salts as storage materials. It also provides an overview of other current solar energy storage materials. The research focuses on measuring absorption efficiency, examining the effects of different particles, and evaluating the thermophysical and storage properties of the discussed materials. The studies presented in the manuscript show significant enhancements in efficiency and other positive outcomes. However, the commercialization of these materials is hindered by various challenges such as high costs, corrosion and erosion, pressure drop, friction factor appreciation, and instability.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Energy & Fuels
Reji R. Kumar, M. Samykano, A. K. Pandey, K. Kadirgama, V. V. Tyagi
Summary: Thermal energy storage systems are crucial for modern energy production, and nano-enhanced phase change materials (NePCM) can improve the thermophysical properties of base PCM. However, the poor thermal conductivity and light transmission capability of the dispersed nanoparticles are major challenges. This research focuses on addressing those challenges by dispersing pristine and functionalized multi-walled carbon nanotubes (MWCNT and FMWCNT) in salt hydrate PCM, leading to improved thermal conductivity, latent heat, and solar spectrum absorption.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Article
Materials Science, Ceramics
Qun Ma, Deqiu Zou, Yinshuang Wang, Ke Lei
Summary: Ceramic composites are commonly used in medium/high temperature thermal energy storage and catalysis. The combination of PCMs with ceramic materials can effectively improve TES capacity, but precautions need to be taken for PCM leakage. This paper prepared a novel MEPCM with thermal expansion void and two ceramic composites, showing great potential in energy storage and catalysis.
CERAMICS INTERNATIONAL
(2021)
Review
Energy & Fuels
Bobo Xiang, Xuelai Zhang
Summary: China still has a gap in vegetable planting and logistics compared to foreign countries, and the cold chain preservation technology needs to be improved. Pre cooling technology has important prospects in cold chain development, and the comprehensive utilization of solar energy and biomass energy is also a direction worth exploring.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Green & Sustainable Science & Technology
Yang Yu, Sheng Chen
Summary: This study proposes a new method to improve the thermal responsive rate of PCMs-based energy storage systems by combining the use of a fin and mechanical vibration. Numerical simulations reveal that a moderate vibration frequency and optimal fin length can effectively accelerate the charging processes.
Article
Construction & Building Technology
Lewis Setter, Eric Smoorenburg, Sajith Wijesuriya, Paulo Cesar Tabares-Velasco
JOURNAL OF BUILDING ENGINEERING
(2019)
Article
Construction & Building Technology
Sajith Wijesuriya, Paulo Cesar Tabares-Velasco, Kaushik Biswas, Dariusz Heim
BUILDING AND ENVIRONMENT
(2020)
Article
Energy & Fuels
Sajith Wijesuriya, Paulo Cesar Tabares-Velasco
JOURNAL OF ENERGY STORAGE
(2020)
Article
Thermodynamics
Sajith Wijesuriya, Paulo Cesar Tabares-Velasco
Summary: The study examines the potential impact of thermal energy storage on electricity demand and the importance of predicting energy performance in buildings, while validating PCM modelling algorithms. A parallel path heat transfer modelling approach is found to have the closest agreement with experimental data in building envelope applications.
APPLIED THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Ravi Anant Kishore, Chuck Booten, Sajith Wijesuriya
Summary: Radiative cooling is a promising technology for passive refrigeration and air conditioning, but estimating its performance is challenging due to its complexity. This study proposes an iterative method to calculate the effective radiative properties, providing an overall estimation error of less than 0.2%.
APPLIED THERMAL ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Sajith Wijesuriya, Chuck Booten, Marcus V. A. Bianchi, Ravi Anant Kishore
Summary: This paper investigates the energy savings and load flexibility capacity of phase change material (PCM) integrated into building envelope under a future energy generation scenario, where 80% of the energy load comes from renewable sources. The study optimizes the operating parameters of PCM, such as thickness, latent heat, interior setpoint profile, distribution, and heat transfer coefficient, to maximize energy reduction and load flexibility without compromising thermal comfort. The results show that the proposed PCM-integrated envelope can provide annual load flexibility of up to 33.6% and annual energy savings of up to 10.8% in a lightweight residential building located in Baltimore, MD. This study is important as it addresses the increasing contribution of renewable energy and explores practical ways to implement PCM in buildings to improve energy efficiency and load flexibility.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Green & Sustainable Science & Technology
Sajith Wijesuriya, Ravi Anant Kishore, Marcus V. A. Bianchi, Chuck Booten
Summary: This study investigates the benefits and limitations of implementing radiative coatings on the building envelope of residential buildings in the United States. The analysis compares the performance of ideal and realistic radiative coatings and shows that energy savings differ based on geographical location and climate conditions.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Energy & Fuels
Shitong Fang, Houfan Du, Tao Yan, Keyu Chen, Zhiyuan Li, Xiaoqing Ma, Zhihui Lai, Shengxi Zhou
Summary: This paper proposes a new type of nonlinear VIV energy harvester (ANVEH) that compensates for the decrease in peak energy output at low wind speeds by introducing an auxiliary structure. Theoretical and experimental results show that ANVEH performs better than traditional nonlinear VIV energy harvesters under various system parameter variations.
Article
Energy & Fuels
Wei Jiang, Shuo Zhang, Teng Wang, Yufei Zhang, Aimin Sha, Jingjing Xiao, Dongdong Yuan
Summary: A standardized method was developed to evaluate the availability of solar energy resources in road areas, which combined the Analytic Hierarchy Process (AHP) and the Geographic Information System (GIS). By analyzing critical factors and using a multi-indicator evaluation method, the method accurately evaluated the utilization of solar energy resources and guided the optimal location selection for road photovoltaic (PV) projects. The results provided guidance for the application of road PV projects and site selection for route corridors worldwide, promoting the integration of transportation and energy.
Article
Energy & Fuels
Chang Liu, Jacob A. Wrubel, Elliot Padgett, Guido Bender
Summary: The study investigates the effects of coating defects on the performance of the anode porous transport layer (PTL) in water electrolyzers. The results show that an increasing fraction of uncoated regions on the PTL leads to decreased cell performance, with continuous uncoated regions having a more severe impact compared to multiple thin uncoated strips.
Article
Energy & Fuels
Marcos Tostado-Veliz, Xiaolong Jin, Rohit Bhakar, Francisco Jurado
Summary: In this paper, a coordinated charging price mechanism for clusters of parking lots is proposed. The research shows that enabling vehicle-to-grid characteristics can bring significant economic benefits for users and the cluster coordinator, and vehicle-to-grid impacts noticeably on the risk-averse character of the uncertainty-aware strategies. The developed pricing mechanism can reduce the cost for users, avoiding to directly translate the energy cost to charging points.
Article
Energy & Fuels
Duan Kang
Summary: Building an energy superpower is a key strategy for China and a long-term goal for other countries. This study proposes an evaluation system and index for measuring energy superpower, and finds that China has significantly improved its ranking over the past 21 years, surpassing other countries.
Article
Energy & Fuels
Fucheng Deng, Yifei Wang, Xiaosen Li, Gang Li, Yi Wang, Bin Huang
Summary: This study investigated the synergistic blockage mechanism of sand and hydrate in gravel filling layer and the evolution of permeability in the layer. Experimental models and modified permeability models were established to analyze the effects of sand particles and hydrate formation on permeability. The study provided valuable insights for the safe and efficient exploitation of hydrate reservoirs.
Article
Energy & Fuels
Hao Wang, Xiwen Chen, Natan Vital, Edward Duffy, Abolfazl Razi
Summary: This study proposes a HVAC energy optimization model based on deep reinforcement learning algorithm. It achieves 37% energy savings and ensures thermal comfort for open office buildings. The model has a low complexity, uses a few controllable factors, and has a short training time with good generalizability.
Article
Energy & Fuels
Moyue Cong, Yongzhuo Gao, Weidong Wang, Long He, Xiwang Mao, Yi Long, Wei Dong
Summary: This study introduces a multi-strategy ultra-wideband energy harvesting device that achieves high power output without the need for external power input. By utilizing asymmetry, stagger array, magnetic coupling, and nonlinearity strategies, the device maintains a stable output voltage and high power density output at non-resonant frequencies. Temperature and humidity monitoring are performed using Bluetooth sensors to adaptively assess the device.
Article
Energy & Fuels
Tianshu Dong, Xiudong Duan, Yuanyuan Huang, Danji Huang, Yingdong Luo, Ziyu Liu, Xiaomeng Ai, Jiakun Fang, Chaolong Song
Summary: Electrochemical water splitting is crucial for hydrogen production, and improving the hydrogen separation rate from the electrode is essential for enhancing water electrolyzer performance. However, issues such as air bubble adhesion to the electrode plate hinder the process. Therefore, a methodology to investigate the two-phase flow within the electrolyzer is in high demand. This study proposes using a microfluidic system as a simulator for the electrolyzer and optimizing the two-phase flow by manipulating the micro-structure of the flow.
Article
Energy & Fuels
Shuo Han, Yifan Yuan, Mengjiao He, Ziwen Zhao, Beibei Xu, Diyi Chen, Jakub Jurasz
Summary: Giving full play to the flexibility of hydropower and integrating more variable renewable energy is of great significance for accelerating the transformation of China's power energy system. This study proposes a novel day-ahead scheduling model that considers the flexibility limited by irregular vibration zones (VZs) and the probability of flexibility shortage in a hydropower-variable renewable energy hybrid generation system. The model is applied to a real hydropower station and effectively improves the flexibility supply capacity of hydropower, especially during heavy load demand in flood season.
Article
Energy & Fuels
Zhen Wang, Kangqi Fan, Shizhong Zhao, Shuxin Wu, Xuan Zhang, Kangjia Zhai, Zhiqi Li, Hua He
Summary: This study developed a high-performance rotary energy harvester (AI-REH) inspired by archery, which efficiently accumulates and releases ultralow-frequency vibration energy. By utilizing a magnetic coupling strategy and an accumulator spring, the AI-REH achieves significantly accelerated rotor speeds and enhanced electric outputs.
Article
Energy & Fuels
Yi Yang, Qianyi Xing, Kang Wang, Caihong Li, Jianzhou Wang, Xiaojia Huang
Summary: In this study, a novel hybrid Quantile Regression (QR) model is proposed for Probabilistic Load Forecasting (PLF). The model integrates causal dilated convolution, residual connection, and Bidirectional Long Short-Term Memory (BiLSTM) for multi-scale feature extraction. In addition, a Combined Probabilistic Load Forecasting System (CPLFS) is proposed to overcome the inherent flaws of relying on a single model. Simulation results show that the hybrid QR outperforms traditional models and CPLFS exceeds the best benchmarks in terms of prediction accuracy and stability.
Article
Energy & Fuels
Wen-Jiang Zou, Young-Bae Kim, Seunghun Jung
Summary: This paper proposes a dynamic prediction model for capacity fade in vanadium redox flow batteries (VRFBs). The model accurately predicts changes in electrolyte volume and capacity fade, enhancing the competitiveness of VRFBs in energy storage applications.
Article
Energy & Fuels
Yuechao Ma, Shengtie Wang, Guangchen Liu, Guizhen Tian, Jianwei Zhang, Ruiming Liu
Summary: This paper focuses on the balance of state of charge (SOC) among multiple battery energy storage units (MBESUs) and bus voltage balance in an islanded bipolar DC microgrid. A SOC automatic balancing strategy is proposed considering the energy flow relationship and utilizing the adaptive virtual resistance algorithm. The simulation results demonstrate the effectiveness of the proposed strategy in achieving SOC balancing and decreasing bus voltage unbalance.
Article
Energy & Fuels
Raad Z. Homod, Basil Sh. Munahi, Hayder Ibrahim Mohammed, Musatafa Abbas Abbood Albadr, Aissa Abderrahmane, Jasim M. Mahdi, Mohamed Bechir Ben Hamida, Bilal Naji Alhasnawi, A. S. Albahri, Hussein Togun, Umar F. Alqsair, Zaher Mundher Yaseen
Summary: In this study, the control problem of the multiple-boiler system (MBS) is formulated as a dynamic Markov decision process and a deep clustering reinforcement learning approach is applied to obtain the optimal control policy. The proposed strategy, based on bang-bang action, shows superior response and achieves more than 32% energy saving compared to conventional fixed parameter controllers under dynamic indoor/outdoor actual conditions.
