Utilization of Phase Change Materials (PCM) to Reduce Energy Consumption in Buildings

2011 ◽  
Author(s):  
Ragab M. Moheisen ◽  
Keith A. Kozlowski ◽  
Aly H. Shaaban ◽  
Christian D. Rasmussen ◽  
Abdelfatah M. Yacout ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Phase Change ◽  
Phase Change Materials ◽  
Reduce Energy Consumption

scholarly journals A Review of a Stand-Alone Hydrogen System Application for Private Houses in Greece and the Use of Phase Change Materials in Their Building Construction

2017 ◽  
Author(s):  
Leonidas C. Raptis ◽  
Giouli K. Michalakakou ◽  
Evangelos I. Gkanas ◽  
Sofoklis S. Makridis
Keyword(s):  
Renewable Energy ◽  
Energy Consumption ◽  
Phase Change ◽  
Phase Change Materials ◽  
Action Plan ◽  
Energy System ◽  
Standard Of Living ◽  
Hydrogen Energy ◽  
Reduce Energy Consumption ◽  
First Time

Energy is a fundamental ingredient in economic development and energy consumption is an index of prosperity and the standard of living. The consumption of energy has increased significantly in the last number of decades, as the standard of living has improved. Renewable energy is a sustainable and clean source of energy derived from nature. Renewable energy technology is one of the solutions, which produces energy by transforming natural resources into useful energy forms. When you do something for the first time in the world, you never attain a perfect product or solution from the start. In Central Greece Lamia city, we are the first to design and implement an off-grid energy system using hydrogen energy storage technology and phase change materials for a house residence. The action plan for energy efficiency, a series of directives and incentive mechanisms, mandatory energy certification of buildings, indicate the urgent need to reduce energy consumption in buildings, which results in a more comfortable living, long service life of buildings, which in turn preserves the environment.

scholarly journals Using Phase Change Materials (PCMs) in a Hot and Humid Climate to Reduce Heat Gain and Energy Consumption

2021 ◽  
Vol 13 (19) ◽  
pp. 10965
Author(s):  
Mohammad S. Bagazi ◽  
Ammar A. Melaibari ◽  
Ahmed B. Khoshaim ◽  
Nidal H. Abu-Hamdeh ◽  
Abdulmohsen O. Alsaiari ◽  
...  
Keyword(s):  
Saudi Arabia ◽  
Energy Consumption ◽  
Phase Change ◽  
Building Materials ◽  
Phase Change Materials ◽  
Residential Buildings ◽  
Maximum Energy ◽  
Humid Climate ◽  
Clay Bricks ◽  
Reduce Energy Consumption

Twenty percent of the world’s energy is consumed by the construction sector, including commercial and residential buildings, where 13% is consumed by the residential sector only. Half of the total energy consumed by buildings in Saudi Arabia is specifically attributed to the hot summer season, which, unlike in many other countries in the Middle East, continues for more than 5 months annually. The use of a phase change material (PCM), as an insulator in building materials, can be a solution to provide a comfortable indoor temperature and reduce energy consumption. This study examined two different melting ranges for PCMs RT35 and RT35HC inserted into hollow clay bricks to investigate their thermal behavior and heat storage capacity and compare them with polystyrene foam. To perform this experiment, four chambers were constructed using cement plastering. The data were collected at Jeddah, Saudi Arabia, from mid-November 2020 to the end of February 2021. When the highest temperature was reached during the experiment, PCM RT35 provided a better cooling effect by 13% compared to 24% and 28.56% for PCM RT35HC and foam, respectively, compared to hollow bricks alone. However, when the lowest temperature was reached during the experiment, PCM RT35HC performed better than the other chambers in saving energy and keeping the chamber warm, which was 9.5% for the reference chamber, 7.0% for the foam chamber, and 2.8% for PCM RT35. The maximum energy saving of PCM RT35 was around 1920 kJ, which is around 0.533 kWh, for one wall only, and for PCM RT35HC, it was 2880 kJ, or 0.8 kWh, which can reduce energy consumption of the HVAC system by 97 kWh/m2 and 146 kWh/m2 per year, respectively.

scholarly journals Influence of Thermal Insulation’s and Phase Change Material’s Insertion within a Partition Wall on the Energy Consumption of a Conditioned Room under Adjacent Local Periodical Temperature Effect

2020 ◽  
Vol 307 ◽  
pp. 01024
Author(s):  
Nisrine Hanchi ◽  
Hamid Hamza ◽  
Rabiaa Idmoussa ◽  
Jawad Lahjomri ◽  
Abdelaziz Oubarra
Keyword(s):  
Energy Consumption ◽  
Phase Change ◽  
Phase Change Material ◽  
Thermal Insulation ◽  
Phase Change Materials ◽  
Thermal Conditions ◽  
Thermal Activity ◽  
Partition Wall ◽  
Reduction Of Energy Consumption ◽  
Change Material

The aim of this work is to study the combined insertion effect of Phase Change Materials (PCM) and thermal insulation within a partition wall separating a conditioned room from an adjacent local which is under a periodic thermal activity. This is done by a comparative study with a reference wall under the same thermal conditions. The comparison criterion is the energy density transmitted to the local conditioned in established regime. The results show that the inclusion of thermal insulation and phase change material provides a significant reduction of energy consumption of the conditioned local; thereby a judicious choice of phase change material with thermal level and range melting temperature reduces further this reduction.

scholarly journals Evaluation of Energy Performance and Thermal Comfort Considering the Heat Storage Capacity and Thermal Conductivity of Biocomposite Phase Change Materials

Processes ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 2191
Author(s):  
Su-Gwang Jeong ◽  
Taemin Lee ◽  
Jeonghun Lee
Keyword(s):  
Thermal Conductivity ◽  
Energy Consumption ◽  
Thermal Comfort ◽  
Phase Change ◽  
Chemical Stability ◽  
Phase Change Materials ◽  
Storage Capacity ◽  
Heat Storage ◽  
Building Energy ◽  
Vacuum Impregnation

The application of phase change materials (PCMs) has been verified as an effective strategy for improving energy efficiency and reducing greenhouse gas emissions. Biocomposite PCMs (Bc-PCM) exhibit large latent heat, chemical stability, and a wide temperature range. In this study, thermal conductivity improved Bc-PCM (TBc-PCM) was made via vacuum impregnation with graphene nanoplatelets (GNPs). Chemical stability analysis and thermal performance analyses of the Bc-PCM and TBc-PCM were carried out as well as building energy simulations and thermal comfort analyses. Our results show Bc-PCM showed a higher heat storage capacity and enthalpy value compared to TBc-PCM. TBc-PCM exhibited a 378% increase in thermal conductivity compared to Bc-PCM. Building energy simulation results revealed that annual heating and cooling energy consumption decreased as the thickness of the PCM layer increased. In addition, the Bc-PCM with a larger PCM capacity was more effective in reducing energy consumption during the heating period. On the other hand, the cooling energy reduction effect was greater when TBc-PCM with high thermal conductivity was applied because of the high heat transfer during the cooling period. Thermal comfort evaluation revealed it was more comfortable when PCM was applied.

Investigation Progress of Phase Change Building Materials

2014 ◽  
Vol 672-674 ◽  
pp. 1828-1832
Author(s):  
Hai Yang Ni ◽  
Xiao Qin Zhu ◽  
Jin Hu ◽  
Yu Bie ◽  
Liang Chen ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Thermal Comfort ◽  
Phase Change ◽  
Energy Saving ◽  
Building Materials ◽  
Phase Change Materials ◽  
Structure And Function ◽  
Heating Energy Consumption ◽  
And Function ◽  
Important Significance

Phase change building materials are a category of building materials with the integration of structure and function, which can be achieved by phase change materials composite with the traditional building materials. They have such characteristics as the improvement of energy saving efficiency in buildings, the decrease of heating energy consumption and the adjustment of thermal comfort in the room environment etc. Therefore, phase change building materials are one of the most efficient means of energy utilizations, which has important significance for promoting their investigation and applications of energy saving in buildings.

scholarly journals Thermal management and phase change heat transfer characteristics of LiFePO4 batteries by cooling PCM

2021 ◽  
pp. 338-338
Author(s):  
Yaoting Wang ◽  
Tong Meng ◽  
Wenxiao Chu
Keyword(s):  
Heat Transfer ◽  
Energy Consumption ◽  
Phase Change ◽  
Phase Change Materials ◽  
Lithium Iron Phosphate ◽  
Heat Storage ◽  
Expanded Graphite ◽  
Iron Phosphate ◽  
Thermal Safety ◽  
Heat Transfer Characteristics

The cycle life and thermal safety of lithium-iron-phosphate batteries are important factors restricting the popularization of new energy vehicles. The study aims to prevent battery overheating, prolong the cycle life of power batteries and improve their thermal safety by discussing the heat production of lithium-iron-phosphate batteries to solve the problem of temperature rise in the natural convection environment and cut the energy consumption in the liquid cooling system. A numerical simulation and experiment are employed to study the heat production characteristics of LiFePO4 batteries and the heat transfer characteristics of the system, with its Phase Change Materials (PCMs) and Coupling Phase Change Materials of Paraffin and Expanded Graphite), channel liquid, and microchannel PCM coupling cooled to control the temperature of the batteries. The results show that the temperature goes higher with the discharge rate during discharge. Since it has large internal component values, LiFePO4 produces more heat at the beginning and end of discharge. When the battery pack is discharged at 1C and 2C rates, the mass flow rates are 1.8?10?3kg/s and 3.6?10?3kg/s, the temperature can be controlled at most 40?C, and the temperature difference less than 3?C respectively. Paraffin is composed of expanded graphite, and the thermal conductivity of the composite Heat Storage PCMs (Phase Change Heat Storage Materials) is 24 times of that of pure paraffin. Therefore, cooling the active liquid and coupled PCMs can improve the cooling efficiency and has a good effect on solving the problem of temperature rise and energy consumption reduction. The research provides a reference for the thermal energy management of LiFePO4 batteries, providing a method of cooling PCMs (Phase Change Materials) of LiFePO4 batteries.

Sign in / Sign up

Export Citation Format

Share Document