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Research of the Thermal Performance Assessment of Building Structure During the Interim Heating

Author: XuJingFeng
Tutor: DingXiaoZhong
School: Chongqing University
Course: Building Science,
Keywords: Run mode Building envelope Thermal performance Finite Difference Method Software simulation Numerical calculation Boundary conditions
CLC: TU111.4
Type: Master's thesis
Year: 2005
Downloads: 313
Quote: 11
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Abstract


Building envelope energy-saving design and energy-saving design are two important means of building energy efficiency and thermal comfort between the two complement each other and influence each other. Users corresponding to different devices running different needs, different devices running mode device will produce different energy-saving design, also affect building energy efficiency design. Energy-saving effect in the development of national building energy efficiency design standards are still used in continuous heating, air-conditioning mode calculation of building energy consumption, the evaluation of building energy-saving design and energy-saving effect, but did not consider the actual equipment operating conditions, the forecast the actual situation is quite different. The same time, not taken into account in the evaluation of the thermal performance of the building envelope on different operating mode of its impact, making the evaluation of the thermal performance of the building envelope is not precise enough and reasonable. Building envelope thermal performance evaluation is the prerequisite and basis for building energy efficiency design. For more accurate evaluation of building envelope thermal performance, through theoretical and practical research in the heating operation mode of building energy consumption and thermal comfort, thermal analysis of the different wall in different modes for different wall performance, provide for the correct evaluation of the thermal performance of building envelope methods provide a more reliable basis for building energy-saving design and energy efficiency evaluation. This study mainly includes five parts: the first part (Chapter 1), the topics presented. First the current status of the four aspects of thermal comfort and building energy-saving, energy-saving design of the building envelope, air-conditioning system energy saving design are reviewed, and some deficiencies that currently exist to clarify this subject - \retaining structure thermal performance evaluation study \The second part (Chapter 2), the operating mode of the established. Survey of residential building heating, air-conditioning system, the operating mode and its building energy consumption situation of the Chengdu region, identified five kinds of heating operation mode of this research project. The third part (Chapter 3, 4, 5), the theoretical analysis of the research. Wall unsteady heat transfer numerical methods to establish the method of calculation of the theoretical model. Comparison of the two building energy consumption software simulation results DOE2IN DeST-h, it is found that the software itself, there are some differences between, it is difficult to draw the right conclusions. Therefore, the authors describe the heat transfer process of the mathematical theory model using an implicit finite difference method and using MATLAB numerical calculation software programming and calculated by analyzing the corresponding conclusions. The fourth part (Chapter 6), the research measured. Through winter testing room in Chengdu energy saving exhibition center field testing of different wall to evaluate the thermal performance of different heating mode operation, test results obtained is not very satisfactory, but its law to verify the correct theory of heat transfer model sex. Part V (Chapter 7), the conclusion of the research and Prospects. The theoretical and experimental results of total

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CLC: > Industrial Technology > Building Science > Building the basic sciences > Building physics > Building Pyrology > Building envelope thermal technology
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