Research On Heat Transfer Of Exterior Wall Compound Blocks

Based on the development which brings about by efficacy buildings'demands for new materials and wall innovation, this dissertation focuses on concrete blocks which is a new kinds of wall system and take efforts to learn about the pyrology performance. This discourseresearched by experimentation and simulation.The paper tests the heat transfer properties of the composite brick wall using the correspond operating platform, and then calculates the transfer coefficient of brick wall, interior temperature distribution, and the heat intensity through the brick wall, provides the experimental data for validating the simulating results.This paper has analyzed several methods of theoretical simulation on heating transfer among Compound Slabs ,then proposed and made out the mathematic model of the Compound Concrete Building Pieces' heat transfer by using Finite Volume Method. A program has been written, which is used to carry out problem of heat transfer among 3-D pieces made by difference materials by using Matlab. The 3-D pieces' heat transfer coefficient and heat flux and temperature field can be set out by using the program. And it proved that the program is feasible and reliable by the contrast of simulation conclusions and experimental conclusions.This paper finds out the reason to deficiency in "Average Law " that is proposed in Thermal Design Codes for Civil Building by analyzing the simulation conclusions .Moreover, a series of correction factors has been given, which is used to amending the modulus deficiency in "average law " for better. Finally, the article designs the program of graphical user interfaces with Matlab. The interfaces are concise and user-friendly and are fit for the operational custom and can be learned easily. The function of the program is so powerful that it can realize the calculation of the heat quantity and heat quotiety from different material concrete blocks in many conditions. It can also work out the resules about concrete blocks temperature distributing .These functions provide lots of convenience for the designing, and research of. concrete blocks.