Article
Energy & Fuels
Michel Rivero, Sayra Orozco, Alberto Beltran
Summary: Systems based on phase change materials rely not only on energy absorption or release capacity, but also on the rate of these processes. This study numerically investigates the time-dependent phase change process using ANSYS Fluent. The results show that small aspect ratios and positive tilting angles can modify flow dynamics and affect the melting process and Nusselt number. Additionally, partial heating reduces melting time by up to 38% compared to homogeneous heat flux distribution.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Shilei Lu, Jiehao Zheng, Ran Wang, Jiawen Zhu
Summary: This research introduces a novel coupled heating system that combines a solar air heater with a ventilation Phase Change Material (PCM) wall. The system exhibits high thermal storage and release efficiency, significantly improving indoor thermal comfort.
Article
Thermodynamics
Anna Staszczuk, Tadeusz Kuczynski
Summary: This study compares the effects of PCM and reinforced concrete on the summer thermal performance of existing buildings, finding that reinforced concrete improves thermal performance significantly, while PCM may solidify during heat waves. It may not be possible to plan an optimum range of PCM melting temperatures effective throughout all summer months in a building without air conditioning.
Article
Green & Sustainable Science & Technology
Shuangping Duan, Lin Wang, Zhiqiang Zhao, Chengwang Zhang
Summary: The study tested the use of phase change materials to improve the thermal performance of Trombe wall. Results showed that the suitable PCM with specific melting temperature and latent heat can effectively increase indoor air temperature.
Review
Construction & Building Technology
Michal Krajcik, Muslum Arici, Ondrej Sikula, Martin Simko
Summary: This study reviews water-based wall systems for space heating and cooling and thermal barriers for reducing buildings' thermal load. It provides an overview of the research topics, including thermal performance, comfort, use of renewable energy sources, and application of phase change materials. The study also discusses the working principles, types, and designs of thermal barriers, as well as proposed classification systems for wall systems and thermal barriers. Benefits, drawbacks, and design recommendations for the wall systems are summarized.
ENERGY AND BUILDINGS
(2021)
Article
Construction & Building Technology
Sana Dardouri, Ekrem Tuncbilek, Othmen Khaldi, Muslum Arici, Jalila Sghaier
Summary: This study focuses on the energy-saving performance of PCM-integrated buildings in a Mediterranean climate. The results show that energy demand can be reduced by up to 41.6% depending on the PCM application. PCM with a low melting temperature favors heating energy savings, while PCM with a high melting temperature favors cooling energy savings. The double-layer PCM system provides higher energy savings compared to the single-layer system.
Article
Thermodynamics
Rafal Andrzejczyk, Muhammad Saqib, Tomasz Kowalcyzk, Hafiz Muhammad Ali
Summary: In this paper, a semi-theoretical time-dependent mathematical model of phase change in a double shell thermal energy storage module is developed. The model can be used to optimize the geometry and phase change rate of the energy storage module. The results can also be applied to shell and tube thermal energy storage design. The optimal working time for larger diameter modules is found to be around 2000 s.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2023)
Article
Chemistry, Physical
Qianru Yang, Jianwu Xiong, Gang Mao, Yin Zhang
Summary: The combination of electric heating and thermal energy storage with phase change material (PCM) shows potential for energy saving in buildings. However, traditional PCMs have issues such as poor thermal conductivity and unsuitable charge-discharge cycles. This study proposes a novel electric PCM wall panel module for space heating with quick dynamic thermal response, and conducts numerical simulation studies to optimize its performance.
Article
Construction & Building Technology
Sidi Mohammed El Amine Bekkouche, Rachid Djeffal, Mohamed Kamal Cherier, Maamar Hamdani, Zohir Younsi, Saleh Al-Saadi, Mohamed Zaiani
Summary: The solar water heater can be used as the main energy source in future residential buildings, reducing the energy cost for water heating. A new configuration for the Domestic Hot Water (DHW) storage tank includes a hybrid energy system with a solar collector and an electric heater, as well as a phase change material for heat storage. Experimental results show that using latent heat storage can be economically attractive for hot water production.
Article
Green & Sustainable Science & Technology
Lixi Zhang, Zhengyang Zhang, Hui Yin
Summary: The study reveals that when high liquid fraction paraffin connects with the mushy zone, vortexes increase rapidly, enhancing natural convective heat transfer and resulting in a rapid increase in liquid fraction. The lower the fin position, the longer the time required for paraffin melting, and the inclination and effective length of the fin jointly determine the melting rate.
Article
Energy & Fuels
Amit Kumar, Prashant Verma, L. Varshney
Summary: The study demonstrates that configuring the outer shell of a circular latent heat thermal energy storage unit into a semi-circular shape can enhance the melting rate of phase change materials. The semi-circular heat storage unit shows better melting performance compared to the circular one, melting the phase change material in almost half the time. Additionally, the thermal energy storage rate and total stored energy are higher in the semi-circular latent heat thermal energy storage system compared to the circular one.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Thermodynamics
Amir Abdi, Mina Shahrooz, Justin N. W. Chiu, Viktoria Martin
Summary: Extending the heat transfer area is an effective way to improve the thermal performance of phase change materials with low thermal conductivity. Vertical fins have a greater impact on the solidification process compared to melting, with increasing fin volume fraction significantly enhancing solidification while having a relatively lower effect on melting. These findings can be valuable for future simulation tools and models in the field.
APPLIED THERMAL ENGINEERING
(2021)
Article
Construction & Building Technology
Demin Liang, Muhammaad Ibrahim, Tareq Saeed, Adel M. El-Refaey, Zhixiong Li, Moram A. Fagiry
Summary: This article numerically examines the effect of a Trombe wall on room temperature in a mild winter climate. Factors such as heat flux, air gap size, number of fins, and the use of phase change material (PCM) are found to have an impact on the average room temperature.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Energy & Fuels
Shuangping Duan, Hongxiang Li, Zhiqiang Zhao, Lin Wang
Summary: Integrating PCM into Trombe wall can improve its heating performance and utilize solar energy efficiently. The optimal combination of PCM melting temperature and layer thickness depends on the solar energy distribution in different regions and significantly affects indoor air temperature.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Energy & Fuels
Ahmed H. N. Al-Mudhafar, Andrzej F. Nowakowski, Franck C. G. A. Nicolleau
Summary: The study investigated the enhancement of PCM thermal performance using tee shaped fins in a shell and tube heat exchanger. Results showed that tee fins accelerated PCM melting process and reduced total melting time by 33% compared to longitudinal fins.
Article
Energy & Fuels
Karima Ghazouani, Safa Skouri, Salwa Bouadila, Amen Allah Guizani
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2019)
Article
Thermodynamics
Farah Mehdaoui, Majdi Hazami, Anis Messaouda, AmenAllah Guizani
APPLIED THERMAL ENGINEERING
(2020)
Article
Energy & Fuels
Anis Messaouda, Majdi Hazami, Farah Mehdaoui, Mohamed Hamdi, Marco Noro, Renato Lazzarin, AmenAllah Guizani
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2020)
Article
Thermodynamics
Anis Messaouda, Mohamed Hamdi, Majdi Hazami, Amen Allah Guizani
APPLIED THERMAL ENGINEERING
(2020)
Article
Thermodynamics
Afifa Riahi, Abdessalem Ben Haj Ali, Abdelhamid Fadhel, Amenallah Guizani, Moncef Balghouthi
ENERGY CONVERSION AND MANAGEMENT
(2020)
Article
Green & Sustainable Science & Technology
Zaineb Azaizia, Sami Kooli, Ilhem Hamdi, Wissem Elkhal, Amen Allah Guizani
Article
Physics, Multidisciplinary
Hafedh Belmabrouk, Houssem Rezgui, Faouzi Nasri, Mohamed Fadhel Ben Aissa, Amen Allah Guizani
EUROPEAN PHYSICAL JOURNAL PLUS
(2020)
Article
Green & Sustainable Science & Technology
Anis Messaouda, Mohamed Hamdi, Majdi Hazami, Amen Allah Guizani
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
(2020)
Article
Chemistry, Physical
Afifa Riahi, Saleh Khamlich, Moncef Balghouthi, Touria Khamliche, Terence Brian Doyle, Wissem Dimassi, Amenallah Guizani, Malik Maaza
JOURNAL OF MOLECULAR LIQUIDS
(2020)
Proceedings Paper
Energy & Fuels
Daniel Benitez, Sofiane Bouaichaoui, Andreas Kazantzidis, Abdessalem Ben Haj Ali, Moncef Balghouthi, AmenAllah Guizani, Ahmed Al-Salaymeh
2019 10TH INTERNATIONAL RENEWABLE ENERGY CONGRESS (IREC)
(2019)
Proceedings Paper
Energy & Fuels
Fathia Eddhibi, Mahmoud Ben Amara, Moncef Balghouthi, AmenAllah Guizani
2019 10TH INTERNATIONAL RENEWABLE ENERGY CONGRESS (IREC)
(2019)
Article
Computer Science, Theory & Methods
Islem Salem, Hichem Taghouti, Ahmed Rahmani, Abdelkader Mami
INTERNATIONAL JOURNAL OF ADVANCED COMPUTER SCIENCE AND APPLICATIONS
(2019)
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.