APPLICATION OF PHASE CHANGING MATERIALS IN RESIDENTIAL BUILDINGS INNER ENVELOPE
Rabab Fikry Taher Fareed;
Abstract
Residential buildings account for a large portion of total energy consumption in Egypt. In fact reducing this residential energy usage as well as maintaining comfort conditions by achieving energy management have been an attractive magnitude for architects and engineers for the last decades. Subsequently, several energy efficiency schemes such as incorporating thermal energy storage (TES) building envelope have been proposed.
Thermal energy storage systems (TES), using Phase Change Material (PCM) in buildings, is a widely investigated technology and a fast developing research area. PCMs are considered to be the most promising latent heat thermal storage (LHTS) system as it has the ability to store passive solar, and other heat gains within a specific temperature range, leading to a reduction of energy requirement for maintaining thermal comfort, downsizing the air condition /heating equipment, shifting the time of the peak load on the electrical grid, and increasing thermal comfort.
This research aims to provide a thorough review of a broad range of Phase Changing Materials (PCMs) technologies including their potential application in buildings. Subsequently, a comparative study and simulation between a base case and optimized models by PCM is considered to understand the effect of high thermal storage building’s shell on energy efficiency and indoor thermal comfort, where, the model takes into account the transient boundary conditions, absorbed solar radiation, the melting/freezing of the PCM and employed a nonlinear film coefficient.
For selecting a specific PCM shields, it was necessary to perform a simulation on the baseline model and to record its thermal performance as reference. According to the base model simulation, three different PCM commercial products are selected carefully to suit the indoor temperature range of the cooling season. The chosen incorporation ways include distributing a PCM in drywall (Case A- Knauf Smartboard), or in an essential plaster layer (Case B- Weber.Mur.Clima) or adding a concentrated PCM sheet between walls (Case C- BioPCMat).
Thermal energy storage systems (TES), using Phase Change Material (PCM) in buildings, is a widely investigated technology and a fast developing research area. PCMs are considered to be the most promising latent heat thermal storage (LHTS) system as it has the ability to store passive solar, and other heat gains within a specific temperature range, leading to a reduction of energy requirement for maintaining thermal comfort, downsizing the air condition /heating equipment, shifting the time of the peak load on the electrical grid, and increasing thermal comfort.
This research aims to provide a thorough review of a broad range of Phase Changing Materials (PCMs) technologies including their potential application in buildings. Subsequently, a comparative study and simulation between a base case and optimized models by PCM is considered to understand the effect of high thermal storage building’s shell on energy efficiency and indoor thermal comfort, where, the model takes into account the transient boundary conditions, absorbed solar radiation, the melting/freezing of the PCM and employed a nonlinear film coefficient.
For selecting a specific PCM shields, it was necessary to perform a simulation on the baseline model and to record its thermal performance as reference. According to the base model simulation, three different PCM commercial products are selected carefully to suit the indoor temperature range of the cooling season. The chosen incorporation ways include distributing a PCM in drywall (Case A- Knauf Smartboard), or in an essential plaster layer (Case B- Weber.Mur.Clima) or adding a concentrated PCM sheet between walls (Case C- BioPCMat).
Other data
| Title | APPLICATION OF PHASE CHANGING MATERIALS IN RESIDENTIAL BUILDINGS INNER ENVELOPE | Other Titles | تطبيق المواد متغيرة الأطوار في المباني السكنية " الغلاف الداخلي" | Authors | Rabab Fikry Taher Fareed | Issue Date | 2016 |
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