Transient temperature distribution in homogeneous and composite materials

Abstract

<span style="font-size:11.0pt;line-height:115%; font-family:" calibri","sans-serif";mso-ascii-theme-font:minor-latin;mso-fareast-font-family:="" "times="" new="" roman";mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:="" minor-latin;mso-bidi-font-family:"times="" roman";mso-ansi-language:en-us;="" mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">The paper deals with the time temperature history in semi-infinite plates of different materials for the same exposed temperature and initial temperature. Theoretical study is based on Gauss's Integral formula. A comparison has been made between the results of theoretical and experimental study. It becomes easy to select the proper material to get required time or temperature by the curve plotted between RC-value and response factor, depending on situations. This method can be used widely for measurement of steady and transient thermal properties of building and insulating materials and may find extensive application in the prediction of thermal response subjected to high temperature, exposure due to fire and for extremely low temperature like cryogenics also. RC values for different single section and multi-layered composite sections have also been discussed here.</span>