کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
78557 49336 2012 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation and thermal performance of gypsum boards incorporated with microencapsulated phase change materials for thermal regulation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Preparation and thermal performance of gypsum boards incorporated with microencapsulated phase change materials for thermal regulation
چکیده انگلیسی

The application of phase change materials (PCMs) for solar thermal-energy storage has received considerable attention in recent years due to their high storage density. A series of microencapsulated PCMs (micro-PCMs) with good phase change behavior have been synthesized through in-situ polymerization and the applications of the obtained micro-PCMs in thermal regulation of gypsum boards are presented in this study. Scanning electron microscope images reveal that the micro-PCMs were dispersed homogeneously in the gypsum boards. Differential scanning calorimeter results show that all the gypsum boards with different weight percentages of the micro-PCMs possess good phase change behavior. The melting and freezing temperatures as well as the latent heat of the gypsum board with 50 wt% or 60 wt% micro-PCMs and 3 wt% glass fibers are quite suitable for the potential thermal energy storage of building applications. Thermal cycling tests indicate that the gypsum board with micro-PCMs maintains excellent thermal reliability after 60 melting–freezing cycles. Furthermore, the gypsum boards with micro-PCMs show a good thermal-regulated property. The temperature of the board incorporated with 60 wt% micro-PCMs can be kept in the rage of 22–27 °C for about 1735 s due to the phase change of the inside micro-PCMs. In addition, the thermal-regulated gypsum boards achieve good thermal stability, high thermal capacity and thermal conductivity, especially for the sample incorporated with 50 wt% micro-PCMs. From the above results, it can be concluded that the gypsum boards incorporated with 50 wt% micro-PCMs have a good potential for thermal energy storage purpose in buildings.


► A novel thermal-regulated gypsum board (GB) is designed for building.
► Latent heat of GB with 60 wt% microcapsules is 76.9 J/g.
► Latent heat of GB almost has no change after 60 thermal cycling.
► Temperature of GB with microcapsules can be kept in the range of 22–27 °C.
► Thermal conductivity of GB with 50 wt% microcapsules is 0.3129 W M−1 K−1.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solar Energy Materials and Solar Cells - Volume 102, July 2012, Pages 93–102
نویسندگان
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