Review
Energy & Fuels
A. W. Kandeal, Almoataz M. Algazzar, M. R. Elkadeem, Amrit Kumar Thakur, Gamal B. Abdelaziz, Emad M. S. El-Said, Ashraf Mimi Elsaid, Meng An, Reham Kandel, Hossam Eldin Fawzy, Swellam W. Sharshir
Summary: The use of solar photovoltaic panels for power generation has become increasingly important due to environmental concerns and growing energy demands. However, the low conversion efficiency of PV panels has led to the development of cooling systems utilizing nanotechnology to enhance performance. Studies have shown that nano-based cooling units can significantly reduce surface temperatures and improve electrical efficiency of PV panels.
Review
Green & Sustainable Science & Technology
T. Anfas Mukram, Joseph Daniel
Summary: The prime concern of the scientific community nowadays is high energy consumption and related greenhouse gas emissions. One of the major energy consumers is the building sector, which accounts for nearly 30% of total energy consumption. Researchers have suggested and implemented different cooling methods using phase change materials (PCMs) for building cooling. This article evaluates the application of PCM in building walls and bricks, highlighting the associated difficulties and possible alternatives.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Review
Thermodynamics
Poppy O'Neill, Ludger Fischer, Remi Revellin, Jocelyn Bonjour
Summary: Phase change dispersions are two-phase fluids with high thermal storage capacity, potentially used as heat transfer fluids in cooling applications. However, challenges such as stability and supercooling need to be addressed. Fundamental knowledge, types of dispersions, and methods of improving formulations are discussed, with potential figures of merit for evaluating efficiency presented.
APPLIED THERMAL ENGINEERING
(2021)
Article
Nanoscience & Nanotechnology
Shubing Li, Ming Li, Li Chen, Xionghu Xu, Anyang Cui, Xin Zhou, Kai Jiang, Liyan Shang, Yawei Li, Jinzhong Zhang, Liangqing Zhu, Zhigao Hu, Junhao Chu
Summary: Flexible memory and wearable electronics based on the STSe phase change material exhibit excellent thermal stability, mechanical reliability, and performance. The STSe-based phase change memory shows remarkable reversible phase change ability and the flexible device can monitor and respond to human activities, demonstrating its reusability and potential as wearable electronics. The STSe device also shows outstanding working reliability, with durability over 100 seconds and long retention over 100 hours.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Energy & Fuels
Vishnuprasad Selvaraj, Haribabu Krishnan
Summary: This study investigates the thermal performance of acidic functionalized graphene dispersed polyethylene glycol nano-phase change material in a simulated electronic cooling system. Results show improved latent heat capacity and thermal conductivity, leading to decreased core temperatures in electronic systems compared to traditional cooling methods. This innovative material shows promise for thermal management applications.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Construction & Building Technology
Jonathan Dallaire, Hafiz Muhammad Adeel Hassan, Jesper Holm Bjernemose, Mads Peter Rudolph Hansen, Ivar Lund, Christian T. Veje
Summary: This paper presents experimental investigations of a dual-stack latent thermal energy storage system for cooling applications in buildings. The results show that the pressure distribution is relatively uniform within the inlet and outlet pressure chambers. The design using two PCM stacks achieved high heat storage effectiveness.
BUILDING AND ENVIRONMENT
(2022)
Review
Energy & Fuels
Lu Han, Xuelai Zhang, Jun Ji, Kunlin Ma
Summary: This paper summarizes the experimental research progress in three aspects: the types of nano-additives, the properties of nano-additives and the effects of nano-additives on the thermophysics of phase change materials. Different types of nano-additives have varying degrees of influence on enhancing the thermal conductivity of the phase change material.
JOURNAL OF ENERGY STORAGE
(2022)
Review
Green & Sustainable Science & Technology
Muhammad Aamer Hayat, Yong Chen, Mose Bevilacqua, Liang Li, Yongzhen Yang
Summary: The article discusses the current research on nano-enhanced phase change materials and the impact of nanofillers on their thermophysical properties. It also explores stability enhancement techniques, challenges, and applications of nano-PCMs.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Thermodynamics
S. Maalej, I Saad, M. A. Nasri, M. C. Zaghdoudi
Summary: This study focuses on the thermal performance of phase change materials (PCMs) used as thermal interface materials (TIMs) between a heat pipe cooling system and an electronic component. The experiments show that different PCMs have varying sensitivities to heat input power and clamping pressure, and the heat transfer enhancement increases with higher heat input power.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2022)
Article
Energy & Fuels
Jiahao Liu, Yining Fan, Qimiao Xie
Summary: This paper experimentally investigates the thermal performance of mixed phase change materials (PCMs) with different phase change temperatures (PCTs) in battery cooling. The findings show that mixed PCMs perform well at lower ambient temperatures, while pure PCM is more effective at higher temperatures.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Thermodynamics
Mohamed G. Gado, Hamdy Hassan
Summary: This study investigates the potential application of phase change materials (PCM) with heat pump (HP) throughout the year in Egypt's climatic conditions. The results show that the PCM-based HP system can achieve significant electricity savings during summer under forced convection, with an average of 4.6%. However, the energy-saving potential is reduced by 1.4% during winter under natural convection when incorporating the same PCM inside the conditioned room. The PCM-based HP system has a substantial payback period of 7.9 years and carbon dioxide mitigation of 7.5 kg/year.
Article
Energy & Fuels
Elisangela Jesus D'Oliveira, Sol Carolina Costa Pereira, Dominic Groulx, Ulugbek Azimov
Summary: This review article mainly focuses on the processes and methods of using highly conductive nanoparticles as a thermal conductivity enhancement technique of low-temperature PCMs (temperatures from 20 to 70 °C) as a promising storage media in residential applications. The paper presents a comprehensive and up-to-date overview of the preparation methods used for Nano-enhanced PCMs (NEPCMs), the impact of nanoparticles on the thermophysical properties, stability of NEPCMs, the hybrid heat transfer enhancement techniques using nano particles, the promising low-temperature applications with NEPCMs, and the research gaps in the field.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Materials Science, Composites
Elangovan Thangapandian, Ponnusamy Palanisamy
Summary: This study investigates the effects of copper oxide (CuO) and aluminum oxide (Al2O3) nanoparticles on the thermophysical properties of lauric acid (LA), and finds that low concentrations of aluminum oxide nanoparticles significantly enhance the thermal conductivity of LA.
POLYMER COMPOSITES
(2022)
Article
Energy & Fuels
Rebeca Salgado-Pizarro, Marc Martin, Adela Svobodova-Sedlackova, Alejandro Calder, Laia Haurie, Camila Barreneche
Summary: The use of adequate thermal energy storage systems has the potential to increase energy efficiency in various fields, including the building sector. Shape-stabilized phase change materials (SS-PCMs) have attracted attention for their ability to overcome the leakage issue of PCMs during the liquid state. However, SS-PCMs still need to address drawbacks such as poor fire reaction and thermal stability. This study presents a new shape-stabilized nano-enhanced phase change material (SS-NEPCM) that incorporates layered silicates to overcome these limitations. The experimental results showed improved thermal stability and fire resistance of the SS-NEPCM.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Thermodynamics
Alex Soh, Zhifeng Huang, Weidong Chen, M. R. Islam, K. J. Chua
Summary: This study proposes a novel design optimization method for a low-temperature latent thermal energy storage (LTES) in a shell-and-tube heat exchanger configuration for district/urban cooling networks. The method improves storage capacity by up to 54.7% and demonstrates that maximizing heat transfer increases costs significantly. Furthermore, optimizing for discharge exergy efficiency in addition to cost and heat transfer efficiency can lead to significant capital cost savings.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Safa Sabet, Murat Barisik, Bernardo Buonomo, Oronzio Manca
Summary: This study analyzed the effects of rarefaction on permeability and heat transfer coefficients in convective gas flows by conducting pore-level analysis of a Kelvin cell model. The results showed that rarefaction significantly enhanced permeability, but this enhancement decreased with increasing porosity. Rarefaction also weakened inertial effects and drag forces, with a more pronounced effect at high Reynolds numbers. For highly conductive metal foam structures, the influences of boundary slip and temperature jump canceled each other out, resulting in Nusselt numbers primarily being dependent on Reynolds number.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2022)
Review
Energy & Fuels
Davide Menegazzo, Giulia Lombardo, Sergio Bobbo, Michele De Carli, Laura Fedele
Summary: This article reviews the current status and potential future developments of GSHP technology, focusing on its application in the refurbishment of existing buildings and the obstacles to its widespread adoption. The parameters characterizing borehole heat exchangers, as well as the latest developments involving refrigerants and secondary fluids, are studied. Additionally, the design and control strategies of GSHPs are discussed.
Article
Thermodynamics
Bernardo Buonomo, Oronzio Manca, Sergio Nappo, Sergio Nardini, Anna di Pasqua
Summary: This study numerically investigates the behavior of foams with Kelvin cell structure in forced convection using water/Al2O3 nanofluids. The results show that the maximum local entropy generation density occurs near the points with higher temperature, and it increases with higher foam porosity and fluid velocity.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2022)
Review
Green & Sustainable Science & Technology
D. Cabaleiro, F. Agresti, L. Fedele, S. Barison, C. Hermida-Merino, S. Losada-Barreiro, S. Bobbo, M. M. Pineiro
Summary: This article reviews the research on formulation, thermophysical, rheological, hydrodynamics, and heat transfer properties of phase change material emulsions (PCMEs). It focuses on the stability of emulsions during storage time, freeze-thaw cycling, shear mechanical stresses, and other operational conditions, as well as the characteristics of phase change and the influence of droplet size and surfactant type on the properties of PCMEs. The article also discusses the potential of PCMEs for efficient thermal management and promoting the use of renewables in various industrial fields.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Thermodynamics
Giovanni A. Longo, Simone Mancin, Giulia Righetti, Claudio Zilio
Summary: This paper presents the local heat transfer coefficients of R32 and R410A complete condensation inside a Brazed Plate Heat Exchanger (BPHE). Experimental data was compared against theoretical models, and the results showed good agreement with both gravity controlled condensation and forced convection condensation.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Thermodynamics
Giovanni A. Longo, Simone Mancin, Giulia Righetti, Claudio Zilio
Summary: This paper presents the measurement of liquid phase density, thermal diffusivity, thermal conductivity, and dynamic viscosity of five commercial PCM in the temperature range of 2-30 degrees Celsius. The results show that the performance of these PCM is significantly lower than water in many aspects.
INTERNATIONAL JOURNAL OF REFRIGERATION
(2022)
Article
Thermodynamics
Bernardo Buonomo, Furio Cascetta, Anna di Pasqua, Oronzio Manca
Summary: This work numerically investigates the effect of metal foam thickness on the performances of external thermoelectric generators (TEGs) in an automotive exhaust gas line. The study evaluates the influence of metal foam on TEG efficiency for different foam thicknesses, porosity, pore densities, and exhaust gas mass flow rates. Results show that the use of metal foams significantly increases the wall temperatures of the channel and improves TEG efficiency for certain foam thickness values. However, an increase in pressure drop is observed, leading to a decrease in net useful power. Optimal configurations with the highest ratio of electric power to pumping power are identified based on mass flow rate, metal foam thickness, porosity, and pore density values.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2023)
Article
Energy & Fuels
Laura Fedele, Sergio Bobbo, Davide Menegazzo, Michele De Carli, Laura Carnieletto, Fabio Poletto, Andrea Tarabotti, Dimitris Mendrinos, Giulia Mezzasalma, Adriana Bernardi
Summary: The European building sector accounts for 40% of total energy consumption and 36% of greenhouse gas emissions. The European Commission is actively seeking technological solutions to reduce energy consumption and greenhouse gas emissions, with ground source heat pumps being of particular interest. This paper presents the results of an analysis on the performance of geothermal heat pumps using low-GWP refrigerants as alternatives to R134a and R410A.
Article
Thermodynamics
L. Fedele, G. Lombardo, I. Greselin, D. Menegazzo, S. Bobbo
Summary: In recent decades, the HVAC&R industry has been striving to find environmentally friendly refrigerants. However, the availability of low GWP fluids, particularly HFOs, is limited. There is still a lack of comprehensive knowledge about the thermophysical properties of HFOs, especially for blends, which necessitates further research.
INTERNATIONAL JOURNAL OF THERMOPHYSICS
(2023)
Article
Chemistry, Physical
Filippo Agresti, David Cabaleiro, Laura Fedele, Stefano Rossi, Simona Barison
Summary: PCM emulsions or micro-nano-encapsulated into organic and inorganic shells have been studied to enhance the thermal capacity and efficiency of heat transfer liquids. In this work, RT21HC, a commercial PCM, was successfully nano-encapsulated into PMMA shells to obtain stable colloidal dispersions. The colloidal dispersions were characterized for microstructure, colloidal stability, rheological properties, heat capacity, and thermal diffusivity. The effect of incorporating nucleating agents into the nano-capsules to mitigate PCM crystallization supercooling was also investigated.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Thermodynamics
T. Maranna, U. S. Mahabaleshwar, L. M. Perez, O. Manca
Summary: This research investigates the thermal transport properties of second-grade and ternary nanoliquids on a two-dimensional shrinking flat surface. It finds that the slip parameter significantly affects the velocity field, and explores the effects of several emerging factors on the research results through plots and discussions. Furthermore, the study concludes that ternary nanoliquids have a higher thermal flow rate than hybrid or standard nanoliquids.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2023)
Review
Energy & Fuels
Assunta Andreozzi, Pietro Asinari, Antonio Barletta, Vincenzo Bianco, Johan Augusto Bocanegra, Pedro Vayssiere Brandao, Bernardo Buonomo, Roberta Cappabianca, Michele Celli, Eliodoro Chiavazzo, Paolo De Angelis, Andrea Diani, Sauro Filippeschi, Marcello Iasiello, Oronzio Manca, Sergio Nardini, Carlo Nonino, Luisa Rossetto
Summary: In the past decade, innovative methods for the design of heating, cooling, and heat storage devices have focused on the use of nanofluids, metal foams, and phase change materials (PCMs). A network of nine Italian universities has achieved significant results by collaboratively researching and evaluating the enhancement in heat transfer and thermal performance through the combined use of these materials.
Article
Thermodynamics
Bernardo Buonomo, Davide Cinquegrana, Michele Ferraiuolo, Oronzio Manca, Sergio Nardini, Renato Elpidio Plomitallo
Summary: Icing is a significant weather hazard for flying an airplane. Recent recognition of ice accumulation as a risk to flight safety has led to a review of models used for investigating icing phenomena. The review focuses on ice accretion models, icing phenomena including phase change material problem, and ice as a porous medium. The study highlights the need for a meso-scale model for ice melting or solidification. Numerical simulations are performed to investigate air and ice behavior during melting process using enthalpy porosity and volume of fluid models. The results offer a good estimation of permeability values during the melting process.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Correction
Thermodynamics
J. C. Umavathi, Bernardo Buonomo, Oronzio Manca, Mikhail A. Sheremet
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2023)
Article
Physics, Fluids & Plasmas
David Cabaleiro, Sonia Losada-Barreiro, Filippo Agresti, Carolina Hermida-Merino, Laura Fedele, Luis Lugo, Simona Barison, Manuel M. Pineiro
Summary: This study focuses on preparing and characterizing phase change material nanoemulsions as thermal fluids with latent functionality. The results show that the formulated nanoemulsions have good stability and thermal reliability, effectively reducing subcooling and enhancing energy storage capacity.
