Article
Thermodynamics
Mohamed Amine Dekhil, Jules Voguelin Simo Tala, Odin Bulliard-Sauret, Daniel Bougeard
Summary: The study analyzed the melting and solidification processes in three horizontal storage units for Latent Heat Thermal Storage using water as phase change material and a water/glycol solution as the Heat Transfer Fluid. Different configurations were compared to improve thermal performance, with the addition of fins significantly increasing solidification and melting rates, especially in the configuration with longitudinal fins.
APPLIED THERMAL ENGINEERING
(2021)
Article
Metallurgy & Metallurgical Engineering
Faraz Afshari, Adnan Sozen, Ataollah Khanlari, Azim Dogus Tuncer
Summary: The study successfully utilized nanofluid in a shell and tube heat exchanger, increasing thermal energy without adding significant pressure drop. The highest heat transfer rate enhancement of 19.1% was achieved using Fe2O3/water nanofluid with a volume fraction of 2%.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2021)
Article
Construction & Building Technology
Shuai Guo, Kai Xian Cheng, Poh Seng Lee
Summary: An experimental set-up was established to validate the numerical model for optimizing finned-tube heat exchangers under natural convection. The numerical model accurately predicted heat transfer and flow rate, with a difference of less than 3.4% between predicted and measured data. The study also found that a one-row coil performed better than a two-row coil in a passive displacement cooling system with 8-10 fins per inch, despite having a smaller heat transfer area.
BUILDING AND ENVIRONMENT
(2023)
Article
Energy & Fuels
Yasin Maghsoudali, Ali Rastegarkoutenaei, Masoud Sahami, Mofid Gorji Bandpy
Summary: This study investigates the thermal and hydraulic performance of three different shell and tube heat exchanger configurations. The use of finned tubes reduces efficiency and increases pressure drop compared to ordinary tubes. An optimized configuration with a protrusion on the inner wall of the shell is proposed to improve efficiency.
JOURNAL OF ENERGY STORAGE
(2022)
Review
Thermodynamics
S. A. Marzouk, M. M. Abou Al-Sood, Emad M. S. El-Said, M. M. Younes, Magda K. El-Fakharany
Summary: This paper provides a comprehensive overview of methods for heat transfer enhancement in shell and tube heat exchangers, which is essential for researchers and practitioners in the field. The studies reviewed various parameters and techniques and concluded that heat transfer enhancement in STHE is making significant progress.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Energy & Fuels
Jiabin Fang, Tao Han, Yixin Bi, Haobing Yan, Jinjia Wei
Summary: A numerical model was used to investigate the heat transfer characteristics of a shell-and-tube phase change heat exchanger filled with paraffin wax RT50. The study found that the placement forms, tube diameters, and fin structures have an influence on the phase change process. Adding fins to the outer surface of the tube can improve heat transfer and shorten the melting time.
FRONTIERS IN ENERGY RESEARCH
(2022)
Article
Thermodynamics
Zheming Tong, Haidan Wang, Shuiguang Tong, Xin Chen
Summary: The leeward-cut spiral finned tube (LSFT) structure is proposed to enhance the efficiency of industrial boilers. Numerical simulations and experimental validation demonstrate that LSFT outperforms the traditional spiral finned tube (SFT) in terms of energy efficiency and deposition characteristics. Optimized LSFT using the LightGBM model and multi-objective particle swarm optimization (PSO) algorithm further improves energy efficiency and reduces deposition density.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2023)
Article
Energy & Fuels
Vahid Safari, Hossein Abolghasemi, Leila Darvishvand, Babak Kamkari
Summary: This study evaluates the combined effect of fin configuration and eccentricity of heat transfer tube on the melting behavior of phase change material (PCM) inside shell and tube heat exchangers. Experimental findings show that the eccentric tube HX and bifurcated fin configuration can significantly reduce melting time, while numerical simulations indicate that bifurcations increase total heat transfer rate.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Thermodynamics
Florent Herbinger, Dominic Groulx
Summary: This paper presents a series of controlled experiments on a specific PCM-heat exchanger, investigating the impact of different heat exchange configurations and operating conditions on power. By determining and applying two comparative metrics, it takes the first step towards finding design theory and rules for PCM-HX.
APPLIED THERMAL ENGINEERING
(2022)
Article
Energy & Fuels
Mohamed Amine Dekhil, Jules Voguelin Simo Tala, Odin Bulliard-Sauret, Daniel Bougeard
Summary: The present study numerically investigates the melting and solidification processes of a Phase Change Material (PCM) in different geometrical configurations of Latent Heat Thermal Energy Storage (LHTES) units. It is found that configurations with fewer fins have better thermal performance during the melting and solidification processes, while configurations with more fins perform better at low melting/solidification rates.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Thermodynamics
Xiuzhen Li, Lin Wang, Rong Feng, Zhanwei Wang, Shijie Liu, Dongsheng Zhu
Summary: The study investigated the shell side heat transport enhancement characteristics of double tube heat exchangers with twisted oval tubes and circular tubes, finding that reducing twist pitch length and increasing inner tube aspect ratio can significantly improve comprehensive heat transport performance, with the best performance observed in the case with the largest inner tube aspect ratio and the smallest twist pitch length.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Thermodynamics
Amin Amiri Delouei, Meysam Atashafrooz, Hasan Sajjadi, Sajjad Karimnejad
Summary: This study experimentally investigates the effects of nanofluid concentration on forced convective heat transfer in an ultrasonic vibrating finned tube heat exchanger. The results reveal that increasing nanofluid concentration can enhance the effect of ultrasonic vibration, while the increase of ambient temperature and passing air velocity reduces the ultrasonic effect.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2022)
Article
Thermodynamics
Seyed Soheil Mousavi Ajarostaghi, Amin Hosseinian-Sorkhi, Muslum Arici
Summary: In this study, the effect of natural convection caused by immiscible intermediate fluid on the melting process in a horizontal shell-and-tube latent heat storage is investigated numerically. The study is divided into two parts, with the first part analyzing a simple 2D latent heat storage system with varying volume proportions of water as the intermediate fluid. The second part examines the effect of the number and arrangement of heat transfer fluid channels. The results show that the case with 50% of the storage volume capacity filled by water saves the maximum energy, and the system with four heat transfer fluid tubes arranged in a diamond pattern absorbs the highest amount of energy.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Engineering, Chemical
Han-Taw Chen, Ming-Hsun Hsu, Kai-Chen Yang, Kuei-Hao Chang, Kuo-Chi Liu
Summary: This study predicts heat transfer using an inverse CFD method and selects an appropriate flow model through validation tests. The study finds the presence of vortex rings in the low-velocity region of the tubes and the inclination of thermal plumes varies with the diameter. The experimental results agree with theoretical models.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Article
Energy & Fuels
Nidhal Ben Khedher, Jasim M. Mahdi, Anmar Dulaimi, Ilia Shojaeinasab Chatroudi, Mohammadreza Ebrahimnataj Tiji, Raed Khalid Ibrahem, A. Yvaz, Pouyan Talebizadehsardari
Summary: Phase-change materials (PCMs) have the potential to address the mismatch between energy supply and demand due to their energy savings, uniform operating temperature, and low cost. This study demonstrates the advantage of using arc-shaped fins as thermal enhancers to improve the thermal functionality of PCM in a storage system. Parametric studies show that modifying the dimensions and angles of the fin configuration can further enhance the heat storage rate.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Thermodynamics
Yang Sui, Jiqiang Niu, Yanping Yuan, Qiujun Yu, Xiaoling Cao, Dan Wu, Xiaofeng Yang
Summary: Evacuated tube transportation is an important development direction for future high-speed transportation technology. This study investigates the aerothermal environment in the tube using a 2D axisymmetric model and DDES based on the SST kappa-omega turbulence model. The results show that the aerothermal environment is significantly affected by the blockage ratio, with the choking limit, shock wave, and Mach disk making the flow field more complicated.
JOURNAL OF THERMAL SCIENCE
(2022)
Article
Energy & Fuels
Chao Zeng, Fujiao Tang, Yanping Yuan, Xiaoling Cao, Fariborz Haghighat, Karthik Panchabikesan
Summary: This study numerically analyzed the feasibility and thermal characteristics of implementing Energy Diaphragm Wall (EDW) adjacent to an air-conditioned space. The results showed that the cooling capacity of the pipe in EDW and the wall's natural cooling capacity were both reduced due to the influence of adjacent air-conditioned space for the same operational period.
Review
Construction & Building Technology
Hanlin Li, Dan Wu, Yanping Yuan, Lijun Zuo
Summary: This study summarizes the daylight performance metrics of TDGSs and provides estimation methods for evaluating their suitability, focusing on their potential energy savings. It aims to assist building designers in creating healthy, comfortable, and energy-efficient indoor environments.
INDOOR AND BUILT ENVIRONMENT
(2022)
Article
Energy & Fuels
Bo Xiang, Yasheng Ji, Yanping Yuan, Dan Wu, Chao Zeng, Jinzhi Zhou
Summary: This study introduces a novel solar energy collector PVTR and its corresponding PVTR-GSHP system to replace the traditional PVT collector. Simulation analysis suggests that under specific conditions, the optimal combination of GHE length and PVTR area is 4000m and 216m².
Article
Energy & Fuels
Daning Hao, Tingsheng Zhang, Liang Guo, Yan Feng, Zutao Zhang, Yanping Yuan
Summary: This study developed a portable solar energy harvesting system (SEHS) to supply power for rail-side applications. The system consists of a solar foldable-wings module and an energy storage module, suitable for providing permanent or temporary power supply. Experimental results show that the system has a high output power in laboratory settings.
Article
Construction & Building Technology
Lingfei Qi, Tingsheng Zhang, Kai Xu, Hongye Pan, Zutao Zhang, Yanping Yuan
Summary: The paper introduces a novel terrain adaptive omni-directional unmanned ground vehicle (TAOUGV) for search and rescue missions in underground space, which consists of obstacle detection, terrain adaptive mechanical module, and control module. The TAOUGV can detect obstacles, navigate through rough terrain, climb obstacles, and implement different control modes for emergency detection in underground space. Simulation and testing results demonstrate the feasibility of the proposed TAOUGV.
SUSTAINABLE CITIES AND SOCIETY
(2021)
Article
Energy & Fuels
P. Sarafoji, Vairavan Mariappan, R. Anish, K. Karthikeyan, N. Babu
Summary: A prototype solar cold storage system based on PCM was developed in this study to investigate the shelf life of post-harvested mango and system performance. Experimental results showed significant weight reduction and hardness increase in cold storage mangoes compared to atmospheric storage, along with a gradual increase in total soluble solids. The titratable acidity slightly decreased within permissible limits in cold storage mangoes.
INTERNATIONAL JOURNAL OF AMBIENT ENERGY
(2021)
Review
Thermodynamics
Mahmood Mastani Joybari, Hakon Selvnes, Alexis Sevault, Armin Hafner
Summary: Shell-and-tube heat exchangers have long been the industry's most common choice, but pillow-plate heat exchangers have gained a growing market share in recent years. This study aims to fill the literature gap by systematically and critically surveying earlier studies on pillow-plate heat exchangers and providing an in-depth discussion on the achievements so far.
APPLIED THERMAL ENGINEERING
(2022)
Review
Thermodynamics
Zeng Chao, Yuan Yanping, Fariborz Haghighat, Karthik Panchabikesan, Mahmood Mastani Joybari, Cao Xiaoling, Lubomir Klimes
Summary: This review paper critically analyzes the recent literature on latent heat thermal energy storage systems in buildings, consolidating commercial software and in-built codes used for mathematical modeling. It also provides suggestions for future works to develop PCM-based thermal energy storage systems more effectively.
JOURNAL OF THERMAL SCIENCE
(2022)
Article
Construction & Building Technology
Soroush Samareh Abolhassani, Mahmood Mastani Joybari, Mirata Hosseini, Mojtaba Parsaee, Ursula Eicker
Summary: Global warming has significantly impacted communities, health, and infrastructure. Previous studies have shown that climate change leads to warmer temperatures, affecting the heating and cooling needs as well as thermal performance of buildings. Analyzing how buildings respond to climate change in terms of energy consumption is crucial for future energy planning and decision-making. However, the existing literature lacks a coherent approach, making it difficult to draw universal conclusions. This study introduces a step-by-step procedure to harmonize future research and guide building impact assessment under climate change.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Thermodynamics
Mahmood Mastani Joybari, Hakon Selvnes, Erling Vingelsgard, Alexis Sevault, Armin Hafner
Summary: This study conducted a parametric study on the design and operational parameters of an industrial-scale pillow plate heat exchanger with carbon dioxide. The results showed that the difference between refrigerant and carbon dioxide phase change temperatures and plate material had the highest significance on storage size and cost, while the refrigerant flow rate had the lowest significance.
APPLIED THERMAL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
H. Vishnu Nandan, R. Anish, G. Jayaprasad, Subin Sunny, Jackson Scaria Jomon, R. Shibin, J. B. Sajin
Summary: Increasing concerns about environmental pollution have prompted researchers to seek sustainable alternatives. This study focuses on the fabrication and experimental validation of a hybrid bio composite using coir and cotton fiber reinforcement dispersed in a paper matrix. The results show that the specimen with 20 wt% coir has better tensile strength and Izod impact value compared to the standard sample, while maintaining thermal stability comparable to conventional packaging materials.
Proceedings Paper
Materials Science, Multidisciplinary
P. Sarafoji, V. Mariappan, R. Anish, K. Karthikeyan, Jayabharata Reddy
Summary: This study presents the performance and evaluation of phase change material in the Prototype Solar Cold Storage (PSCS) system. Experimental results showed that PCM has a high charging speed and insulation effect, which can effectively replace part of the total power consumption. Furthermore, these technologies can also be used for solar PV generation and reduction of greenhouse gas emissions.
MATERIALS TODAY-PROCEEDINGS
(2021)
Proceedings Paper
Materials Science, Multidisciplinary
B. S. Arun, V. Mariappan, R. Anish, P. Nimisha
Summary: An experimental investigation was conducted to evaluate the performances of air-to-air heat exchanger and regenerative evaporative cooler under low and high humidity. The heat exchanger functions as a sensible heat recovery ventilator under low humidity and as a dehumidifier for the evaporative cooler under high humidity. Results showed that the temperature below the wet-bulb temperature of intake air is achieved under low humidity conditions.
MATERIALS TODAY-PROCEEDINGS
(2021)
Proceedings Paper
Materials Science, Multidisciplinary
K. Karthikeyan, V. Mariappan, R. Anish, P. Sarafoji, M. Jaya Bharata Reddy
Summary: The study synthesized a mixture for low temperature PCM and conducted experiments in a double helical coil CTESU to analyze its charging and discharging behavior and performance parameters. Analysis showed that the developed coil improved heat transfer performance, with faster discharging rate and controlled solidification during charging process.
MATERIALS TODAY-PROCEEDINGS
(2021)
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.
