Improving thermal and energy performance of buildings in summer with internal phase change materials

2013 ◽  
Vol 37 (3) ◽  
pp. 296-324 ◽  
Author(s):  
Rachel Becker
Keyword(s):  
Phase Change ◽  
Phase Change Materials ◽  
Energy Performance ◽  
Energy Performance Of Buildings ◽  
Internal Phase

scholarly journals Experimental and Numerical Study on Energy Performance of Buildings Integrated with Phase Change Materials

2017 ◽  
Vol 105 ◽  
pp. 2214-2219 ◽  
Author(s):  
Sayanthan Ramakrishnan ◽  
Xiaoming Wang ◽  
Jay Sanjayan ◽  
John Wilson
Keyword(s):  
Phase Change ◽  
Phase Change Materials ◽  
Numerical Study ◽  
Energy Performance ◽  
Energy Performance Of Buildings

Preliminary Proposal of a Shading System Composed of Photovoltaic Modules and Phase Change Material

2016 ◽  
Vol 820 ◽  
pp. 218-223
Author(s):  
Richard Jedinák
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Phase Change Materials ◽  
Energy Performance ◽  
Zero Energy ◽  
Photovoltaic Modules ◽  
Architectural Engineering ◽  
Energy Performance Of Buildings ◽  
New Buildings ◽  
Change Material

Energy efficiency of buildings is one of the basic requirements of current architectural engineering. The new recast of the Energy Performance of Buildings Directive (EPBD) calls for all new buildings to be nearly zero energy buildings by the end of 2020. To achieve this target is quite challenging. The article deals with the design of a shading system, which consists of lamination made from photovoltaic modules and phase change materials. The lamination is composed of thin but durable photovoltaic modules, which are located on the profile formed from aluminum in which the phase change material is mounted. The shading system is a part of the building facade from the exterior side. In this article there are presented results of simulation of a single zone which was set with a shading system using two different phase change materials.

scholarly journals Thermal Dynamic Behavior in Bi-Zone Habitable Cell with and without Phase Change Materials

Proceedings ◽  
2020 ◽  
Vol 63 (1) ◽  
pp. 41
Author(s):  
Hanae El Fakiri ◽  
Lahoucine Ouhsaine ◽  
Abdelmajid El Bouardi
Keyword(s):  
Thermal Behavior ◽  
Thermal Comfort ◽  
Phase Change ◽  
Dynamic Behavior ◽  
Phase Change Materials ◽  
Energy Performance ◽  
High Energy ◽  
Water Heater ◽  
Simplified Modeling

The thermal dynamic behavior of buildings represents an important aspect of the energy efficiency and thermal comfort of the indoor environment. For this, phase change material (PCM) wallboards integrated into building envelopes play an important role in stabilizing the temperature of the human comfort condition. This article provides an assessment of the thermal behavior of a “bi-zone” building cell, which was built based on high-energy performance (HEP) standards and heated by a solar water heater system through a hydronic circuit. The current study is based on studying the dynamic thermal behavior, with and without implantation of PCMs on envelope structure, using a simplified modeling approach. The evolution of the average air temperature was first evaluated as a major indicator of thermal comfort. Then, an evaluation of the thermal behavior’s dynamic profile was carried out in this study, which allowed for the determination of the PCM rate anticipation in the thermal comfort of the building cell.

Review on building energy performance improvement using phase change materials

2018 ◽  
Vol 158 ◽  
pp. 776-793 ◽  
Author(s):  
Mengjie Song ◽  
Fuxin Niu ◽  
Ning Mao ◽  
Yanxin Hu ◽  
Shiming Deng
Keyword(s):  
Phase Change ◽  
Performance Improvement ◽  
Phase Change Materials ◽  
Building Energy ◽  
Energy Performance ◽  
Building Energy Performance

scholarly journals Solar gain mitigation in ventilated tiled roofs by using phase change materials

2020 ◽  
Vol 15 (3) ◽  
pp. 434-442
Author(s):  
Michele Bottarelli ◽  
Francisco Javier González Gallero ◽  
Ismael Rodríguez Maestre ◽  
Gang Pei ◽  
Yuehong Su
Keyword(s):  
Phase Change ◽  
Phase Change Materials ◽  
Building Energy ◽  
Energy Performance ◽  
Building Envelope ◽  
Dynamics Model ◽  
Night Time ◽  
Low Wind Speed ◽  
Cooling Design ◽  
Hot Season

Abstract Several passive cooling design techniques are known for reducing solar heat gain through building envelope in summer season. These include the use of phase change materials (PCM), which has received an increased attention over the last years, and the strategy of increasing the above-sheathing ventilation (ASV) in ventilated roofs. However, few studies combine both technologies to maximise the building resilience in hot season. The effect of including a PCM layer into a ventilated roof is numerically analysed here in two different configurations: firstly, laid on the roof deck (PCM1 case) and, secondly, suspended in the middle of the ASV channel (PCM2 case). A computational fluid dynamics model was implemented to simulate airflow and heat transfer around and through the building envelope, under 3 days of extreme hot conditions in summer with high temperatures and low wind speed. Results showed slight differences in terms of mean temperatures at the different roof layers, although temperature fluctuations at deck in the PCM1 case were smaller than half of those estimated for the benchmark case. However, PCM2 configuration achieved a daily reduction of about 10 Wh/m2 (18%) in building energy load with respect to the benchmark case, whilst PCM1 got only 4% due to the lower ventilation at night time. Therefore, a suspended PCM layer in the ASV channel would be a better measure in terms of energy performance than laid on the deck surface, although this last option significantly decreases thermal stress of the insulation layer.

scholarly journals Multiscale Modelling Approach Targeting Optimisation of PCM into Constructive Solutions for Overheating Mitigation in Buildings

2020 ◽  
Vol 10 (22) ◽  
pp. 8009
Author(s):  
António Figueiredo ◽  
Romeu Vicente ◽  
Rui Oliveira ◽  
Fernanda Rodrigues ◽  
António Samagaio
Keyword(s):  
Phase Change ◽  
Energy Demand ◽  
Phase Change Materials ◽  
Supply And Demand ◽  
Energy Performance ◽  
Simulation Software ◽  
Rate Reduction ◽  
Melting Temperatures ◽  
Detached House ◽  
Global Energy Supply

Nowadays, the rising gap between the global energy supply and demand is a well-known circumstance in society. Exploring the solution to invert this tendency leads to several different scenarios of energy demand saving strategies that can be improved using phase change materials (PCM), especially in cold-formed steel-framed buildings. The present research reports the overheating (indoor air temperature above 26 °C expressed as an annualized percentage rate) reduction in south-oriented compartments and energy performance of a detached house located in the Aveiro region, in Portugal. An optimisation study was performed incorporating different phase change materials (PCMs) solutions and their position in the exterior envelope focusing overheating rate reduction and heating demand. The optimisations were managed by using a hybrid evolutionary algorithm coupled with EnergyPlus® simulation software. The overheating risk was reduced by up to 24% in the cooling season, for the case of the building compartments with south orientation. Thus, the use of construction solutions using PCMs with different melting temperatures revealed to be a good strategy to maximise PCM efficiency as a passive solution.

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