کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1563816 | 999621 | 2007 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thermal diffusivity measurements of building materials based on 2D models
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مکانیک محاسباتی
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چکیده انگلیسی
This paper presents the results and experimental procedure used for obtaining the thermal diffusivity of building materials like cement, sand, expanded polystyrene, silicone and concrete. The determination of this important physical property is based on the solution of the 2D cartesian and cylindrical Fourier equation adapted to high surface conductances. Material samples are shaped as rectangular prisms or cylinders to accomplish these simple geometries. The measurement technique is based on the sample thermal response when it is suddenly submitted to baths of constant temperature. The uncertainty associated with this method is systematically estimated in both cases. Thermal diffusivity is obtained with a precision of about 6% using a simple proving bench. Such precision is good enough taking into account the typical low values of this property for such kind of materials and their strong dependence with temperature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computational Materials Science - Volume 38, Issue 4, February 2007, Pages 838-846
Journal: Computational Materials Science - Volume 38, Issue 4, February 2007, Pages 838-846
نویسندگان
A. Baïri, J.M. GarcÃa de MarÃa, N. Laraqi,