Article
Energy & Fuels
Jinxin Feng, Jiangchang Huang, Ziye Ling, Xiaoming Fang, Zhengguo Zhang
Summary: By developing a low-supercooling phase change material nanoemulsion as a coolant for PV module thermal management system, it can effectively reduce the temperature of PV modules and reduce energy consumption, showing better thermal management performance than traditional water cooling systems.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2021)
Article
Materials Science, Multidisciplinary
Abdullah Mustapha, Yi Wang, Yulong Ding, Yongliang Li
Summary: This study aimed to reduce the supercooling phenomenon in microencapsulated phase change materials (MPCMs) through methods such as increasing microcapsule size, employing nucleating agents, and embedding copper nanoparticles. It was found that these methods were effective in reducing supercooling. Additionally, the rheological behavior of MPCMs was influenced by the MPCM composition.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Energy & Fuels
Drew Lilley, Jonathan Lau, Chris Dames, Sumanjeet Kaur, Ravi Prasher
Summary: This research demonstrates the characterization of supercooling behavior in phase change materials using common lab scale thermal analysis techniques, followed by the development of a statistical model to predict supercooling performance in thermal energy storage applications of varying sizes. By validating the model's accuracy, successful predictions of supercooling temperature changes were achieved.
Article
Energy & Fuels
Yunhan Liu, Liang Wang, Long Peng, Shuang Zhang, Xipeng Lin, Xiangyu Han, Haisheng Chen
Summary: This study investigated the effects of thickening agent CMC and nucleating agent DSP concentrations on the thermal properties of cPCMs, finding that high viscosity CMC helps maintain thermal cycle stability but leads to poor phase change behavior. Excessive use of CMC or DSP can reduce thermal stability and increase supercooling. Additionally, the viscosity of cPCMs irreversibly decays after several thermal cycles due to degradation and weakened entanglement, posing challenges for CMC in long thermal cycle environments.
Review
Construction & Building Technology
Longlei Que, Xuelai Zhang, Jun Ji, Liqiang Gao, Wenhao Xie, Lu Liu, Xingjiang Ding
Summary: Phase change materials can effectively reduce energy consumption in lightweight buildings, but issues such as phase change hysteresis and supercooling during phase transition must be considered. Hysteresis temperature plays a vital role in improving the thermal performance of building envelopes when PCM is used, and incomplete phase transition hysteresis is more noticeable with large temperature fluctuations. Further research is needed to explore nucleation mechanisms and the impact of experimental conditions on hysteresis phenomena in PCM applications.
ENERGY AND BUILDINGS
(2021)
Article
Thermodynamics
Xuemei Zhang, Leihong Guo, Jianlin Ren, Xiangfei Kong
Summary: A new mid-temperature phase change material was prepared in this study, and expanded graphite was added to reduce supercooling and enhance thermal conductivity. Experimental results showed that the material had low supercooling, high thermal conductivity, and low corrosion rate to common metal materials. The use of this material in solar heating systems can significantly save energy.
APPLIED THERMAL ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
J. Chen, Y. Kou, K. Sun, H. Liu, X. Zhang, C. Fang, Q. Shi
Summary: Researchers have designed and synthesized a shape-stable erythritol-based composite phase change material with excellent latent heat controlled storage and release performance. This composite material shows superior shape stability and thermal energy storage capacity.
MATERIALS TODAY SUSTAINABILITY
(2023)
Article
Chemistry, Multidisciplinary
Kyung-Eun Min, Jae-Won Jang, Jun-Ki Kim, Chien Wern, Sung Yi
Summary: This study investigates the thermophysical properties of four types of MnCl2·4H2O PCMs and finds that liquid and dual-phase PCMs have superheating issues, the latent heat of the PCMs ranges from 146 to 176 J/g, and the diffusivities of solid-phase PCM are higher than those of liquid-phase PCM. The study also identifies the homogeneity of the initial states of PCMs and the heating/cooling rates as important factors for accurately measuring the thermophysical properties of PCMs.
APPLIED SCIENCES-BASEL
(2022)
Article
Energy & Fuels
Chunlei Wu, Qing Wang, Shipeng Sun, Xinmin Wang, Da Cui, Shuo Pan, Hongyu Sheng
Summary: In this study, NaCl-KCl-NaF/nanoparticles composite phase change materials (CPCMs) were used to improve thermal conductivity and energy density in high-temperature thermal energy storage systems. The addition of CuO and Al2O3 nanoparticles resulted in a significant enhancement in thermal properties and a reduction in cost per unit of energy density. The CPCMs exhibited excellent operating temperature range and thermal stability.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2023)
Article
Chemistry, Physical
Zhaoqing Kang, Xin Li, Le Zhou, Dan Li, Jiangping Wang
Summary: Microencapsulated phase change materials (MicroPCMs) with polyethylene wax (PE-W) as nucleating agent were prepared using emulsion polymerization. The addition of PE-W significantly reduced the degree of supercooling and increased the enthalpy associated with heterogeneous nucleation in MicroPCMs. The thermal resistance of the MicroPCMs encapsulated by P(MMA-co-AMA) was greatly improved. The MicroPCMs demonstrated exceptional thermal storage and protective characteristics.
SURFACES AND INTERFACES
(2024)
Article
Energy & Fuels
Jie Lv, Jianjun Wang, Ting Zhang, Bochao Yang, Ziwei Zhen, Yi Zheng, Yi Wang
Summary: In this study, nanofibrous Kevlar aerogel containing paraffin and deposited with polypyrrole (PPY-KNF/PF) was successfully fabricated for multi-energy complementary applications. The structure, morphology, and photo/electro-thermal conversion ability of PPY-KNF/PF, as well as the effect of confinement on the latent heat storage capacity of composites without PPY (KNF/PF), were investigated. The results showed that PF was induced to the interface of nanofibers and formed a three-dimensional porous structure. The deposition of PPY had no effect on the structure and morphology of KNF/PF, and the PPY-KNF/PF80 displayed good shape stability and high latent heat storage ability. Moreover, the composite exhibited electrothermal and active photothermal conversion properties, making it suitable for use in situations with insufficient solar energy.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Thermodynamics
Yan Li, Shuo Wang, Wangwang Tan, Shenghui Zhou, Qunzhi Zhu
Summary: In this study, a shape-stabilized composite phase change material (CPCM) was prepared using expanded graphite (EG) with different particle sizes as a supporting material. The experimental results showed that 50 mesh EG was the most suitable adsorption carrier for erythritol. Compared to pure erythritol, the 50 mesh EG/ET composite material exhibited reduced supercooling, increased latent heat of solidification, and improved thermal conductivity, thereby enhancing the heat storage and release capacity.
INTERNATIONAL JOURNAL OF THERMOPHYSICS
(2023)
Article
Energy & Fuels
Maosheng Zheng, Xiaojian Peng, Jia Liu, Shuai Zhang, Xiao Zhang
Summary: The study investigates the performance of PCMs for storing and releasing heat energy, finding that a composite PCM containing 10% Na2CO3∙10H2O performs well in phase transition; furthermore, after adding 2.25% Na2SiO3∙9H2O, the composite material obtained exhibits better performance during cooling, with improved stability.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Review
Energy & Fuels
Weisan Hua, Xin Lv, Xuelai Zhang, Zhe Ji, Jiahao Zhu
Summary: Seasonal thermal energy storage (STES) is a crucial system for achieving low and zero carbon emissions by storing and utilizing thermal energy using different types of storage media. Phase change materials (PCMs) have shown great potential in STES, but their inherent defects such as low thermal conductivity and phase separation limit their further development. However, in the context of STES, the supercooling of PCMs becomes beneficial. Thus, future research should focus on finding stable supercooling PCMs, designing trigger crystallization devices, and developing high-performance STES systems.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Qingjiang Cheng, Xiuli Cheng, Xue Wang, Peixing Du, Chenzhen Liu, Zhonghao Rao
Summary: This study introduces the use of CMC-Na and h-BN to regulate the supercooling and thermal properties of erythritol. The results show that CMC-Na and h-BN can effectively promote the crystal growth and nucleation process of erythritol, improving its thermal energy storage stability.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Engineering, Multidisciplinary
Guanhua Zhang, Oana R. Ghita, Kenneth E. Evans
COMPOSITES PART B-ENGINEERING
(2016)
Article
Thermodynamics
Q. Q. Yong, M. Yang, W. Lu, J. Chen
HEAT TRANSFER RESEARCH
(2016)
Article
Thermodynamics
Wei Lu, Tao Zhang, Mo Yang
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2016)
Article
Thermodynamics
Wei Lu, Tao Zhang, Mo Yang, Yupeng Wu
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2017)
Article
Engineering, Chemical
Zhi-bo Xiong, Bai Peng, Fei Zhou, Chao Wu, Wei Lu, Jing Jin, Shi-fa Ding
Article
Energy & Fuels
Wei Lu, Yupeng Wu, Philip Eames
Article
Chemistry, Multidisciplinary
Jing Liu, Zhi-bo Xiong, Fei Zhou, Wei Lu, Jing Jin, Shi-fa Ding
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2018)
Article
Energy & Fuels
W. Lu, S. A. Tassou
Article
Energy & Fuels
W. Lu, S. A. Tassou
Article
Green & Sustainable Science & Technology
Huakeer Wang, Wei Lu, Zhigen Wu, Guanhua Zhang
Proceedings Paper
Automation & Control Systems
Zhuohuan Hu, Wei Lu
2017 IEEE 2ND ADVANCED INFORMATION TECHNOLOGY, ELECTRONIC AND AUTOMATION CONTROL CONFERENCE (IAEAC)
(2017)
Article
Green & Sustainable Science & Technology
Fei Zhou, Zhi-bo Xiong, Wei Lu, Jing Jin, Xu-chun Ding
CLEAN-SOIL AIR WATER
(2017)
Article
Chemistry, Physical
Zhi-bo Xiong, Jing Liu, Fei Zhou, Dun-yu Liu, Wei Lu, Jing Jin, Shi-fa Ding
APPLIED SURFACE SCIENCE
(2017)
Article
Green & Sustainable Science & Technology
Cameron Bracken, Nathalie Voisin, Casey D. Burleyson, Allison M. Campbell, Z. Jason Hou, Daniel Broman
Summary: This study presents a methodology and dataset for examining compound wind and solar energy droughts, as well as the first standardized benchmark of energy droughts across the Continental United States (CONUS) for a 2020 infrastructure. The results show that compound wind and solar droughts have distinct spatial and temporal patterns across the CONUS, and the characteristics of energy droughts are regional. The study also finds that compound high load events occur more often during compound wind and solar droughts than expected.
Article
Green & Sustainable Science & Technology
Ning Zhang, Yanghao Yu, Jiawei Wu, Ershun Du, Shuming Zhang, Jinyu Xiao
Summary: This paper provides insights into the optimal configuration of CSP plants with different penetrations of wind power by proposing an unconstrained optimization model. The results suggest that large solar multiples and TES are preferred in order to maximize profit, especially when combined with high penetrations of wind and photovoltaic plants. Additionally, the study demonstrates the economy and feasibility of installing electric heaters (EH) in CSP plants, which show a linear correlation with the penetration of variable energy resources.
Article
Green & Sustainable Science & Technology
M. Szubel, K. Papis-Fraczek, S. Podlasek
Article
Green & Sustainable Science & Technology
J. Silva, J. C. Goncalves, C. Rocha, J. Vilaca, L. M. Madeira
Summary: This study investigated the methanation of CO2 in biogas and compared two different methanation reactors. The results showed that the cooled reactor without CO2 separation achieved a CO2 conversion rate of 91.8%, while the adiabatic reactors achieved conversion rates of 59.6% and 67.2%, resulting in an overall conversion rate of 93.0%. Economic analysis revealed negative net present worth values, indicating the need for government monetary incentives.
Article
Green & Sustainable Science & Technology
Yang Liu, Yonglan Xi, Xiaomei Ye, Yingpeng Zhang, Chengcheng Wang, Zhaoyan Jia, Chunhui Cao, Ting Han, Jing Du, Xiangping Kong, Zhongbing Chen
Summary: This study investigated the effect of using nanofiber membrane composites containing Prussian blue-like compound nanoparticles (PNPs) to relieve ammonia nitrogen inhibition of rural organic household waste during high-solid anaerobic digestion and increase methane production. The results showed that adding NMCs with 15% PNPs can lower the concentrations of volatile fatty acids and ammonia nitrogen, and increase methane yield.
Article
Green & Sustainable Science & Technology
Zhong Ge, Xiaodong Wang, Jian Li, Jian Xu, Jianbin Xie, Zhiyong Xie, Ruiqu Ma
Summary: This study evaluates the thermodynamic, exergy, and economic performance of a double-stage organic flash cycle (DOFC) using ten eco-friendly hydrofluoroolefins. The influences of key parameters on performance are analyzed, and the advantages of DOFC over single-stage type are quantified.
Article
Green & Sustainable Science & Technology
Nicolas Kirchner-Bossi, Fernando Porte-Agel
Summary: This study investigates the optimization of power density in wind farms and its sensitivity to the available area size. A novel genetic algorithm (PDGA) is introduced to optimize power density and turbine layout. The results show that the PDGA-driven solutions significantly reduce the levelized cost of energy (LCOE) compared to the default layout, and exhibit a convex relationship between area and LCOE or power density.
Article
Green & Sustainable Science & Technology
Chunxiao Zhang, Dongdong Li, Lin Wang, Qingpo Yang, Yutao Guo, Wei Zhang, Chao Shen, Jihong Pu
Summary: In this study, a novel reversible liquid-filled energy-saving window that effectively regulates indoor solar radiation heat gain is proposed. Experimental results show that this window can effectively reduce indoor temperature during both summer and winter seasons, while having minimal impact on indoor illuminance.
Article
Green & Sustainable Science & Technology
Alessandro L. Aguiar, Martinho Marta-Almeida, Mauro Cirano, Janini Pereira, Leticia Cotrim da Cunha
Summary: This study analyzed the Brazilian Equatorial Shelf using a high-resolution ocean model and found significant tidal variations in the area. Several hypothetical barrages were proposed with higher annual power generation than existing barrages. The study also evaluated the installation effort of these barrages.
Article
Green & Sustainable Science & Technology
Francesco Superchi, Nathan Giovannini, Antonis Moustakis, George Pechlivanoglou, Alessandro Bianchini
Summary: This study focuses on the optimization of a hybrid power station on the Tilos island in Greece, aiming to increase energy export and revenue by optimizing energy fluxes. Different scenarios are proposed to examine the impact of different agreements with the grid operator on the optimal solution.
Article
Green & Sustainable Science & Technology
Peimaneh Shirazi, Amirmohammad Behzadi, Pouria Ahmadi, Sasan Sadrizadeh
Summary: This research presents two novel energy production/storage/usage systems to reduce energy consumption and environmental effects in buildings. A biomass-fired model and a solar-driven system integrated with photovoltaic thermal (PVT) panels and a heat pump were designed and assessed. The results indicate that the solar-based system has an acceptable energy cost and the PVT-based system with a heat pump is environmentally superior. The biomass-fired system shows excellent efficiency.
Article
Green & Sustainable Science & Technology
Zihao Qi, Yingling Cai, Yunxiang Cui
Summary: This study aims to investigate the operational characteristics of the solar-ground source heat pump system (SGSHPS) in Shanghai under different operation modes. It concludes that tandem operation mode 1 is the optimal mode for winter operation in terms of energy efficiency.
Article
Green & Sustainable Science & Technology
L. Bartolucci, S. Cordiner, A. Di Carlo, A. Gallifuoco, P. Mele, V. Mulone
Summary: Spent coffee grounds are a valuable biogenic waste that can be used as a source of biofuels and valuable chemicals through pyrolysis and solvent extraction processes. The study found that heavy organic bio-oil derived from coffee grounds can be used as a carbon-rich biofuel, while solvent extraction can extract xantines and p-benzoquinone, which are important chemicals for various industries. The results highlight the promising potential of solvent extraction in improving the economic viability of coffee grounds pyrolysis-based biorefineries.
Article
Green & Sustainable Science & Technology
Luiza de Queiroz Correa, Diego Bagnis, Pedro Rabelo Melo Franco, Esly Ferreira da Costa Junior, Andrea Oliveira Souza da Costa
Summary: Building-integrated photovoltaics, especially organic solar technology, are important for reducing greenhouse gas emissions in the building sector. This study analyzed the performance of organic panels laminated in glass in a vertical installation in Latin America. Results showed that glass lamination and vertical orientation preserved the panels' performance and led to higher energy generation in winter.
Article
Green & Sustainable Science & Technology
Zhipei Hu, Shuo Jiang, Zhigao Sun, Jun Li
Summary: This study proposes innovative fin arrangements to enhance the thermal performance of latent heat storage units. Through optimization of fin distribution and prediction of transient melting behaviors, it is found that fin structures significantly influence heat transfer characteristics and melting behaviors.