Heat conduction across double brick walls via BEM |
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| Affiliation: | 1. School of Physics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, Hubei, PR China;2. Department of Electrical and Mechanical Engineering, Xinxiang Vocational and Technical College, Xinxiang 453007, Henan, PR China;3. State Key of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, 8 Xindu Road, Chendu 610500, Sichuan, PR China;1. Institute of Heat Science and Power Engineering, Naval University of Engineering, Wuhan 430033, PR China;2. Military Key Laboratory for Naval Ship Power Engineering, Naval University of Engineering, Wuhan 430033, PR China;3. College of Power Engineering, Naval University of Engineering, Wuhan 430033, PR China |
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| Abstract: | The Boundary Element Method (BEM) is used to compare the steady-state heat and moisture diffusion behaviour across double brick walls provided by two different models: in the first one, the brick wall is assumed to be composed of a set of homogeneous layers bonded together, which is the model frequently used to predict internal condensation; in the second model, the geometrical modelling and hygrothermal properties of the individual bricks are taken into account.The BEM is implemented allowing the use of multi boundaries, which permits the full discretization of the brick cavities.Three different construction solutions are analysed. In the first, the double-brick wall is assumed not to be thermally insulated; in the second, the space between the two layers of bricks is filled with thermal insulation material; in the third solution, both the space between the brick layers and the holes of the inner brick layer are filled with thermal insulating material. |
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