Analysis of Heat Transfer in Building Thermal Insulation
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Analysis of Heat Transfer in Building Thermal Insulation

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Published by Oak Ridge National Laboratory .
Written in English


Book details:

Edition Notes

StatementFine, H.A.
ContributionsJury, S.H., Yarbrough, David W.
The Physical Object
Pagination82 p. $0.00 C.1.
Number of Pages82
ID Numbers
Open LibraryOL17585170M

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insulation thickness in building walls by using a dynamic heat-transfer model and an economic model based on the present-worth method. Mahlia et al. [24] developed correlation between thermal conductivity and the thickness of selected insulation materials for building . Thermal radiation mechanism occurs when thermal energy is emitted similar to light radiation. Heat transfers through insulation material occur by means of conduction, while heat loss to or heat gain from atmosphere occurs by means of convection and radiation. Schuetz, M. A. and Glicksman, L. R. () A basic study of heat transfer through foam insulation. Journal of Cellular Plastics, 20 (2), – CrossRef Google ScholarCited by: A two-dimensional code for solving equations of convective heat transfer in porous media is used to analyze heat transfer by conduction and convection in the attic insulation configuration. The particular cases treated correspond to loose-fill fiberglass insulation, which .

(e.g. nano-cermaic thermal insulation coatings) can reduce the con vective heat transfer coefficient (h i, or h e, according to the insulated side) of the i nsulated surface. Insulation properties will vary, depends on moisture content U-values calculated assuming standard values for mc and rates of heat transfer at surfaces and in cavities see slide on Standard thermal resistances Building Regulations and Scottish Codes use U-values as targets and limits for thermal insulation and energy use U-value standard values common basis for comparison (see table ).   Thermal insulation materials have a significant effect on reducing the heat transfer coefficient in the building's walls. Therefore, the selection of appropriate insulation materials and in particular the determination of the OIT, are two important factors in wall insulation [,,, ]. Calculation of heat storage. Effect of ventilation and need for trickle ventilation. Inside or outside insulation, thermal bridges or heat leakage areas. Relation between insulation and space heating.

Figure 4 is a THERM color infrared diagram of the heat transfer model of a Ventilated Rainscreen assembly. The major temperature change occurs in the rigid insulation outside the building enclosure. Heat from the room is able to warm up the stud cavity above the dew point. The thermal transfer model suggests that there is low risk of condensation. In general, the poor thermal insulation of building materials usually causes elevated room temperature, which not only reduces the comfort of the environment but also adds extra loading to the air conditioner. The objective of this study is to investigate the heat insulation efficiencies of building outer skins used for green building. Chen, J.-J., et al.: Heat Transfer Analysis of Insulation Materials with Flexible Multilayers THERMAL SCIENCE, Year , Vol. 17, No. 5, pp. The heat flux through the material, the boundary temperatures, the thickness of the shields and spacers and other parameters can be obtained by the experiments. Thermal Analysis with SOLIDWORKS Simulation 13 Figure Heat transfer by conduction. Conduction is responsible for heat transfer inside a solid body. Thermal conductivity is vastly different for different materials as shown in Figure Figure Thermal conductivity for different materials.