Review
Thermodynamics
Harry Mahon, Dominic O'Connor, Daniel Friedrich, Ben Hughes
Summary: Mitigating climate change requires exploring a diverse range of technologies for reducing emissions. Seasonal thermal energy storage is an effective method to reduce energy demand and increase renewable resource efficiency. Despite some barriers, four advanced sensible heat storage methods are currently being implemented within energy systems.
Article
Construction & Building Technology
Farjallah Alassaad, Karim Touati, Daniel Levacher, Nassim Sebaibi
Summary: Climate change is driving the construction industry to enhance materials thermal insulation and heat storage capacity, leading to the development of energy efficient building materials with low environmental impact. Earth-based materials are widely known for their advantages but face limitations in large-scale deployment. Incorporating phase change materials into soil can improve thermal properties while maintaining mechanical properties, but may deteriorate hygrometric properties.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Energy & Fuels
Liang Wang, Xipeng Lin, Han Zhang, Long Peng, Haisheng Chen
Summary: This study investigates the transient behavior of a 10 MW/8 h Joule-Brayton PHES system under four operation modes, including series, parallel, in-sequence, and the innovative "temperature complementation," through numerical simulations considering coupling dynamics, transient heat transfer, and thermodynamics. The series-connected reservoirs array has better round-trip efficiency and delivery variation than the parallel and in-sequence operating modes of the singular reservoir PHES. The innovative "temperature complementation" operation mode further improves delivery stability and reduces the TES reservoir volume with improved efficiency.
Article
Energy & Fuels
P. Kropotin, O. Penkov, I. Marchuk
Summary: This study investigates the feasibility of using unstabilized Compressed Earth Blocks (uCEBs) as a cost-effective alternative for weight manufacturing in Gravity Energy Storage (GES) systems. The analysis shows that uCEBs have competitive advantages in terms of density and cost, and can improve the efficiency of energy storage systems while reducing manufacturing costs.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Gholamabbas Sadeghi
Summary: Climate change and increasing energy demand necessitate a shift towards more rational and sustainable energy use, which can be achieved through the deployment of innovative energy technologies. Thermal energy storage plays a significant role in managing the out-of-phase demand and generation of energy. While there are valuable review contents addressing various heat storage methods separately, there is still a need for a concise and comprehensive source of information to present related ideas and applications. The present review paper aims to investigate significant research contributions focusing on practical applications and scientific aspects of thermal energy storage systems, considering design, optimization, and integration challenges at different scales.
ENERGY STORAGE MATERIALS
(2022)
Article
Energy & Fuels
Liang Wang, Xipeng Lin, Han Zhang, Long Peng, Haoshu Ling, Shuang Zhang, Haisheng Chen
Summary: A novel pumped thermal-liquid air energy storage (PTLAES) system is proposed in this paper, which converts electricity to heat and liquid air and re-converts them to electricity when needed. With a high energy storage density and no requirement for low-density cold storage devices, the PTLAES system shows round-trip efficiencies in the range of 58.7% to 63.8% and an energy storage density of 107.6 kWh/m3 when using basalt as the thermal energy storage material.
Article
Energy & Fuels
Abdelrahman M. Elshaer, A. M. A. Soliman, M. Kassab, A. A. Hawwash
Summary: Thermal management is crucial for small satellites in the thermal environment of low earth orbit. Phase change materials (PCM) show promise for improving thermal control performance.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Construction & Building Technology
Xin Guo, Haibin Wei, Xiao He, Miao He, Dong Yang
Summary: This study proposes a combination mode, EAHE-PCM, to regulate the indoor thermal environment during summer. Experimental results show that this combined operation mode effectively lowers the indoor air temperature and humidity, maintaining a comfortable indoor environment.
BUILDING AND ENVIRONMENT
(2022)
Article
Construction & Building Technology
Farjallah Alassaad, Karim Touati, Daniel Levacher, Nassim Sebaibi
Summary: Embedding phase change materials (PCM) in lightweight earth-based materials has attracted interest for their ability to store thermal energy. This study examined the impact of incorporating PCM on the thermal properties of lightweight earth-based materials. The results showed improved thermal conductivity and specific heat capacity of the material, leading to improved thermal comfort for occupants and reduced energy consumption in buildings.
BUILDING AND ENVIRONMENT
(2023)
Article
Multidisciplinary Sciences
Mulin Qin, Feng Xiong, Waseem Aftab, Jinming Shi, Haiwei Han, Ruqiang Zou
Summary: Passive cooling of buildings has become increasingly important, and daytime radiative cooling technology has made significant breakthroughs. This research introduces a radiative paint with latent heat storage capacity to enhance cooling performance. The bifunctional paint shows good performance in phase transition temperature, enthalpy, reflectivity, and emissivity. It offers the potential to broaden the applications of PCM and DRCT for energy saving and environmental protection.
Article
Chemistry, Physical
Shafiq Ishak, Hassane Lgaz, Soumen Mandal, Raihana Jannat Adnin, Dong-Eun Lee, Han-Seung Lee, Nurul Syahira Mohammad Harmay, Mohd Mustafa Al Bakri Abdullah, Xiao-Yong Wang, Hyun-Min Yang
Summary: This study investigates the absorption effect of diatomaceous earth-based phase change composite on phase change materials (PCMs) through experimental and molecular dynamics (MD) simulation. The experimental results show that the composite with the highest loading ratio has a high absorption capacity, excellent thermal stability, and chemical compatibility. MD simulation reveals that increasing the loading of PCMs restricts molecular mobility. The study also highlights the importance of the pore-filling process in PCM absorption.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Energy & Fuels
Martin Nilsson
Summary: This paper introduces a concept of pumped thermal energy storage based on the Stirling cycle, which provides a smaller sized energy storage and power conversion unit compared to conventional systems. By utilizing a single Stirling machine and combined with a single-tank liquid thermal storage on the hot side and a fan and radiator combination on the cold side, high round-trip efficiencies are achieved.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Saeid Faraji, Hemayat Shekaari, Mohammed Taghi Zafarani-Moattar, Masumeh Mokhtarpour
Summary: Energy storage chemicals, such as ionic liquids, have potential for thermal energy storage due to their thermophysical properties. In this project, three protic ionic liquids were synthesized and evaluated for thermal energy storage. The ionic liquid 2-hydroxyethylammonium lactate showed higher heat capacity and thermal conductivity, making it a suitable candidate for thermal energy storage.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Engineering, Chemical
Juan Rios-Arriola, Nicolas Velazquez-Limon, Jesus Armando Aguilar-Jimenez, Saul Islas, Juan Daniel Lopez-Sanchez, Francisco Javier Caballero-Talamantes, Jose Armando Corona-Sanchez, Cristian Ascencion Casares-De la Torre
Summary: This study evaluates the potential of using an underground thermal energy storage tank supplied by solar thermal collectors to provide hot water for a single-effect absorption cooling system. The simulation results show that the underground tank reduces thermal energy losses by 27.6% and saves 639 kWh of electrical energy due to reduced pumping time.
Article
Chemistry, Physical
Wojciech Wegner, Tomasz Jaron
Summary: Three novel organic derivatives of lanthanide borohydrides, n-But(4)NRE(BH4)(4) (TBAREB), RE = Ho, Tm, Yb, have been prepared using mechanochemical synthesis and purified via solvent extraction. Crystallographic studies revealed two polymorphic forms, alpha- and beta-TBAREB, adopting monoclinic and orthorhombic unit cells, respectively. Thermal decomposition of these compounds was investigated using TGA/DSC measurements, analysis of gaseous products with mass spectrometry, and analysis of solid decomposition products with PXRD.
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.