Article
Construction & Building Technology
Osman Gencel, Gokhan Hekimoglu, Ahmet Sari, Abid Ustaoglu, Serkan Subasi, Muhammed Marasli, Ertugrul Erdogmus, Shazim Ali Memon
Summary: A comprehensive study on the fabrication and characterization of gypsum plasterboards combined with microencapsulated phase change material (mPCM) reveals their potential in thermoregulation management and energy saving in buildings.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Dileep Kumar, Morshed Alam, Jay Sanjayan, Muhammad Harris
Summary: Phase change materials (PCM) can reduce energy consumption and improve thermal comfort in buildings. However, there are limitations in integrating PCM into construction materials, primarily due to the selection of suitable porous materials. This study aimed to select the most suitable porous material for developing Form Stable PCM (FSPCM) cement composite for concrete panels in building envelopes. Five different porous materials were considered based on their porosity, geometry, and surface morphology, and the performance of the synthesized FSPCM composite was evaluated. The study revealed that silica aerogel granules (SAG) had the highest PCM absorption capacity, while recycled expanded glass (REG) had lower absorption capacity. The Capric Acid/Hydrophobic expanded Perlite (CAHEP) showed the best overall performance in terms of absorption, thermal conductivity, strength, thermal inertia, latent heat storage, and thermal storage.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Article
Thermodynamics
Daniel Lopez Pedrajas, Ana M. Borreguero Simon, I Garrido Saenz, F. Javier Ramos, Juan F. Rodriguez Romero, Manuel Carmona Franco
Summary: Thermoregulating composites with low thermal conductivity and high thermal energy storage capacity were synthesized using a thermoregulating slurry. These composites can be used in insulation and thermal energy storage applications. The addition of nanoencapsulated phase change material allows for significant energy savings and reduction in CO2 emissions.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Energy & Fuels
Dongyao Zhang, Chuanchang Li, Niangzhi Lin, Baoshan Xie, Jian Chen
Summary: Composite phase change materials were synthesized from KH-550-decorated mica and poly-ethylene glycol by vacuum impregnation method, with the addition of expanded graphite to improve thermal conductivity and storage capacity. The Md/EG/PEG composite showed enhanced thermal stability and potential for energy conservation in buildings.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Green & Sustainable Science & Technology
Pushpendra Kumar Singh Rathore, Shailendra Kumar Shukla
Summary: This study investigated the combined effect of loading Expanded Graphite and Expanded Vermiculite on the low-cost PCM, and explored the performance of ss-CPCM. The experiment found that adding 7% EG can increase the thermal conductivity of ss-CPCM, significantly improve its heating and cooling rates, and demonstrate good thermal stability and the ability to regulate indoor temperature.
Article
Green & Sustainable Science & Technology
V. V. Tyagi, K. Chopra, B. Kalidasan, Aditya Chauhan, U. Stritih, Sanjeev Anand, A. K. Pandey, Ahmet Sari, Richa Kothari
Summary: This paper discusses the significant role of thermal energy storage in building energy performance, combining thermal properties of PCM materials and their applications in energy efficient buildings. The article summarizes the advancements, applications, and future solutions in thermal energy storage technologies, with a focus on PCM composites, control strategies, and PCM-based PV/T systems.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2021)
Article
Energy & Fuels
Jakub Curpek, Miroslav Cekon
Summary: This study investigates the simulation approach and validation of a double-skin building-integrated photovoltaic concept coupled with phase change material. The results show that using phase change material in a photovoltaic system can increase electricity production and reduce the operating temperature of the panels.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Thermodynamics
Arni M. Pornea, Hern Kim
Summary: A novel hierarchical SiO2/TiO2/polydopamine composite shell was synthesized to improve the solar-thermal conversion efficiency of encapsulated phase change materials, achieving efficient solar energy storage through light-driven localized heating. This composite shell enhances structural stability, durability, and promotes localized surface photo thermal effect in various PCM solar-thermal conversion applications.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Green & Sustainable Science & Technology
M. Samykano
Summary: Thermal energy storage using phase change materials (PCM) has shown great potential in addressing energy fluctuation issues in solar energy. However, the low thermal conductivity of PCM hinders its storage and heat transfer capabilities. Recent research has focused on thermally enhanced PCMs as a solution for improving thermal conductivity and heat transfer. Various techniques such as increasing heat transfer surface area, using highly conductive porous foam materials, and utilizing nano dispersed PCMs have been explored. The use of porous materials/foam dispersed PCM has shown significantly improved heat transfer and storage capacity. Additionally, organic PCMs are widely used due to their long-term stability, low or no supercooling, low or no corrosion, and recyclability.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Green & Sustainable Science & Technology
Chongwei Wang, Chuanxiao Cheng, Tingxiang Jin, Hongsheng Dong
Summary: The addition of phase change materials (PCMs) to building walls for temperature regulation is a promising approach. In this study, a novel composite PCM with high enthalpy was prepared using wild daisy stem as the raw material. The composite PCM exhibited excellent thermal stability, with a phase change enthalpy of 213.6 J/g and a phase change temperature of 40.1 ?. It was found that the composite PCM effectively regulated building temperature, indicating its potential application in building temperature regulation.
Review
Construction & Building Technology
Pushpendra Kumar Singh Rathore, Naveen Kumar Gupta, Devanand Yadav, Shailendra Kumar Shukla, Sanjay Kaul
Summary: This study discusses the thermophysical properties of building envelope and building materials, with a focus on the applicability of phase change materials (PCM) in building envelopes. It provides an overview of the latest literature in which PCM is directly incorporated in building materials and offers future recommendations based on identified research gaps.
SUSTAINABLE CITIES AND SOCIETY
(2022)
Article
Thermodynamics
Muhammad Imran Khan, Faisal Asfand, Sami G. Al-Ghamdi
Summary: Concentrated solar power (CSP) technologies are considered as one of the most promising ways to generate electric power in the future. The integration of efficient and cost-effective thermal energy storage (TES) systems is crucial for the development of CSP technology due to the unstable and intermittent nature of solar energy availability. Over the past decade, phase change materials (PCM) have gained significant interest for CSP applications as a latent heat TES system. This comprehensive review provides an overview of the current state and future challenges of cutting-edge PCM based TES technologies for CSP application, including the functional parts and research progress in each part.
APPLIED THERMAL ENGINEERING
(2023)
Article
Energy & Fuels
K. Kant, P. H. Biwole, I Shamseddine, G. Tlaiji, F. Pennec, F. Fardoun
Summary: Phase change materials (PCM) have the potential to store thermal energy at a constant temperature, but they have limitations such as low phase change enthalpy and poor specific heat. Improving the thermophysical properties of PCMs is essential for efficient thermal energy storage.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2021)
Article
Construction & Building Technology
Meryem Terhan, Gamze Ilgar
Summary: This study investigates the effects of using different phase change materials (PCMs) integrated into exterior walls on the building's thermal energy performance. By changing PCM position, thickness, and melting temperature, four exterior wall types were designed to decrease heating and cooling energy demand. The results show that the three-layer BioPCM27 integrated wall has the highest heating energy savings (21.32%) with a melting temperature of 21 degrees C. The three-layer InfiniteRPCM21C configuration (Type 3) has the best thermal energy performance, with 24.45% energy savings in the cooling season and 14.76% in the heating season.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Alexandra E. Pirtsul, Alexey Krainov, Maria I. Rubtsova, Rais I. Mendgaziev, Kirill A. Cherednichenko, Vladimir Vinokurov, Denis V. Voronin
Summary: Composite phase change material prepared by adsorbing stearic acid onto cellulose microfibrils modified with Ag nanoparticles showed improved heating and cooling rates, as well as enhanced latent heat release during the solidification of stearic acid on the fiber surface.
Article
Thermodynamics
J. L. Valverde, V. R. Ferro, A. Giroir-Fendler
Summary: The study aims to calculate and validate binary interaction parameters for different salts in water using regression analysis, showing that the calculated parameters obtained through two different procedures can effectively fit experimental results and improve the prediction quality of multicomponent systems.
FLUID PHASE EQUILIBRIA
(2022)
Article
Chemistry, Physical
Sonia Lopez, Jesus Manuel Garcia-Vargas, Maria Teresa Garcia, Juan Francisco Rodriguez, Ignacio Gracia, Maria Jesus Ramos
Summary: This study examines the effects of different catalysts on copper(I)-catalyzed reactions and compares the use of organic solvents and green solvents. The results indicate the potential of using heterogeneous catalysts and supercritical CO2 as a sustainable process strategy, which warrants further research on green solvents.
Article
Environmental Sciences
J. Del Amo, D. Simon, M. J. Ramos, J. F. Rodriguez, A. De Lucas, A. M. Borreguero
Summary: The economic viability of the split-phase glycolysis process for recycling flexible polyurethane foam waste using crude glycerol as a cleavage agent has been demonstrated. Through pilot plant experiments and scale-up design, the process can be successfully implemented in industrial production, providing an efficient solution for foam waste recycling.
JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT
(2022)
Article
Engineering, Environmental
Daniel Lopez-Pedrajas, Ana M. Borreguero, F. Javier Ramos, Juan Francisco Rodriguez, Macarena Jimenez-Vazquez, Manuel Carmona
Summary: Phase Change Dispersions (PCDs) with large colloidal stability were produced using gum arabic (GA) and sodium dodecyl sulfate (SDS) mixtures as dispersant agent. The interplay between PCD base properties and final phase change slurry (PCS) characteristics was observed. Homogeneous PCSs were obtained from GA/SDS mass ratios of 70/30 and 40/60, while two phase products were generated from mass ratios 20/80 or 0/100. The PCS prepared with a GA/SDS mass ratio of 40/60 satisfied the European classification as nanomaterial.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Computer Science, Interdisciplinary Applications
Jose L. L. Valverde, Victor R. R. Ferro, Anne Giroir-Fendler
Summary: Aspen HYSYS is commonly used in Chemical Engineering courses at the University of Castilla-La Mancha, and automation is seen as a powerful tool for simulating complex processes. A seminar on automation has had a positive impact on students, although more examples are needed for better understanding and application of automation.
COMPUTER APPLICATIONS IN ENGINEERING EDUCATION
(2023)
Article
Chemistry, Physical
P. Belmonte, M. J. Ramos, J. F. Rodriguez, I Garrido, M. T. Garcia, J. M. Garcia-Vargas
Summary: This study explores the transformation of TPUs into foams using supercritical CO2 and investigates the influence of pressure, temperature, and contact time on the foam properties. The results indicate that pressure has the greatest impact on foam properties, while temperature affects the expansion ratio and cell size significantly.
JOURNAL OF SUPERCRITICAL FLUIDS
(2023)
Article
Chemistry, Physical
Maria del Prado Garrido, Ana Maria Borreguero, Maria Jesus Ramos, Manuel Carmona, Francisco Javier Redondo Calvo, Juan Francisco Rodriguez
Summary: This study developed styrene-divinylbenzene (St-DVB) particles with polyethylene glycol methacrylate (PEGMA) and/or glycidyl methacrylate (GMA) brushes for the removal of bilirubin in haemodialysis. Immobilizing bovine serum albumin (BSA) onto the particles increased their capacity for bilirubin removal and enabled quick and selective removal from plasma. The St-DVB-GMA-PEGMA particles wetted in ethyl lactate with BSA reduced the concentration of bilirubin in plasma by 53% in less than 30 minutes.
Article
Polymer Science
Juan Catala, Irene Guerra, Jesus Manuel Garcia-Vargas, Maria Jesus Ramos, Maria Teresa Garcia, Juan Francisco Rodriguez
Summary: This article introduces non-isocyanate polyurethanes (NIPUs) based on biobased polyamines and polycarbonates as a sustainable alternative to conventional polyurethanes. A novel method is disclosed to control the crosslinking density of fully biobased isocyanate-free polyurethanes, and the synthesis procedure and influence of partial blocking of active polymerization sites are explored. Fully biobased NIPUs with targeted crosslinking density are successfully synthesized using hybrid NIPUs.
Article
Chemistry, Multidisciplinary
P. Belmonte, J. M. Garcia-Vargas, J. F. Rodriguez, S. Medovarschi, I. Garrido, M. T. Garcia, M. J. Ramos
Summary: Reprocessing polyurethane elastomers into foams using supercritical CO2 is an opportunity to promote the recycling of polyurethane materials. This study examines the influence of hard segment content on the foaming process. The results show that increasing hard segment content leads to increased crystalline phase, changes in foaming temperature window, and the possibility of obtaining foams suitable for insulation applications.
JOURNAL OF CO2 UTILIZATION
(2023)
Article
Chemistry, Multidisciplinary
Maria del Prado Garrido, Juan Francisco Rodriguez, Maria Jesus Ramos, Manuel Carmona, Francisco Javier Redondo Calvo, Ana Maria Borreguero
Summary: The scale-up and economic feasibility of synthesizing St-MMA-GMA-PEGMA particles biofunctionalized with HSA were studied. The geometrical similarity between laboratory and pilot plant reactors was examined to develop a scaling-up process based on the criterion of constant Re number. A reaction was carried out in the pilot plant scale, confirming the suitability of the scale-up criterion as particles with similar characteristics and functional groups were obtained. The economic feasibility of an industrial plant producing HSA functionalized particles was addressed, showing a high internal rate of return (IRR) and net present value (NPV), as well as a short payback time.
APPLIED SCIENCES-BASEL
(2023)
Article
Thermodynamics
E. Castellanos, J. L. Valverde, M. C. Navarro
Summary: This study focuses on modeling and numerical simulation of gas flow and temperature in a 0.09 m diameter and 1 m long reactor to optimize the temperature inside. The research shows that locating the support device at the center or closer to the outlet of the reactor results in optimal temperatures at the reactor shell, with better energy efficiency achieved when it is closer to the outlet. The findings are significant for laboratory experiments to control the temperature required for optimal formation of these important industrial nanomaterials.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2023)
Article
Construction & Building Technology
Samiran Khorat, Debashish Das, Rupali Khatun, Sk Mohammad Aziz, Prashant Anand, Ansar Khan, Mattheos Santamouris, Dev Niyogi
Summary: Cool roofs can effectively mitigate heatwave-induced excess heat and enhance thermal comfort in urban areas. Implementing cool roofs can significantly improve urban meteorology and thermal comfort, reducing energy flux and heat stress.
ENERGY AND BUILDINGS
(2024)
Article
Construction & Building Technology
Qi Li, Jiayu Chen, Xiaowei Luo
Summary: This study focuses on the vertical wind conditions as a main external factor that limits the energy assessment of high-rise buildings in urban areas. Traditional tools for energy assessment of buildings use a universal vertical wind profile estimation, without taking into account the unique wind speed in each direction induced by the various shapes and configurations of buildings in cities. To address this limitation, the study developed an omnidirectional urban vertical wind speed estimation method using direction-dependent building morphologies and machine learning algorithms.
ENERGY AND BUILDINGS
(2024)
Article
Construction & Building Technology
Xiaojun Luo, Lamine Mahdjoubi
Summary: This paper presents an integrated blockchain and machine learning-based energy management framework for multiple forms of energy allocation and transmission among multiple domestic buildings. Machine learning is used to predict energy generation and consumption patterns, and the proposed framework establishes optimal and automated energy allocation through peer-to-peer energy transactions. The approach contributes to the reduction of greenhouse gas emissions and enhances environmental sustainability.
ENERGY AND BUILDINGS
(2024)
Article
Construction & Building Technology
Ying Yu, Yuanwei Xiao, Jinshuai Chou, Xingyu Wang, Liu Yang
Summary: This study proposes a dual-layer optimization design method to maximize the energy sharing potential, enhance collaborative benefits, and reduce the storage capacity of building clusters. Case studies show that the proposed design significantly improves the performance of building clusters, reduces energy storage capacity, and shortens the payback period.
ENERGY AND BUILDINGS
(2024)
Article
Construction & Building Technology
Felix Langner, Weimin Wang, Moritz Frahm, Veit Hagenmeyer
Summary: This paper compares two main approaches to consider uncertainties in model predictive control (MPC) for buildings: robust and stochastic MPC. The results show that compared to a deterministic MPC, the robust MPC increases the electricity cost while providing complete temperature constraint satisfaction, while the stochastic MPC slightly increases the electricity cost but fulfills the thermal comfort requirements.
ENERGY AND BUILDINGS
(2024)
Article
Construction & Building Technology
Somil Yadav, Caroline Hachem-Vermette
Summary: This study proposes a mathematical model to evaluate the performance of a Double Skin Facade (DSF) system and its impact on indoor conditions. The model considers various design parameters and analyzes their effects on the system's electrical output and room temperature.
ENERGY AND BUILDINGS
(2024)
Article
Construction & Building Technology
Ruijun Chen, Holly Samuelson, Yukai Zou, Xianghan Zheng, Yifan Cao
Summary: This research introduces an innovative resilient design framework that optimizes building performance by considering a holistic life cycle perspective and accounting for climate projection uncertainties. The study finds that future climate scenarios significantly impact building life cycle performance, with wall U-value, windows U-value, and wall density being major factors. By using ensemble learning and optimization algorithms, predictions for carbon emissions, cost, and indoor discomfort hours can be made, and the best resilient design scheme can be selected. Applying this framework leads to significant improvements in building life cycle performance.
ENERGY AND BUILDINGS
(2024)