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Study Numerical Simulation of Air Distribution and Air Quality Evaluation in Air-Conditioned Office

Author: ZhuBaiRu
Tutor: GuoRenNing
School: Liaoning Technical University
Course: Heating,Gas Supply, Ventilation and Air Conditioning Engineering
Keywords: CFD simulation Air-conditioning system Airflow Optimization
CLC: TU831
Type: Master's thesis
Year: 2009
Downloads: 127
Quote: 0
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Abstract


Choose the right organizational form of airflow to determine the evaluation of good and bad effects of air distribution methods, and how to improve the energy efficiency of air forms of organization and others are air-conditioned air distribution design problems. In response to this situation, papers to office as the research object, the computational fluid dynamics (CFD) simulation software as a tool to be applied to the Office of the Organization of the different forms of air-conditioning system airflow simulation, and analyze and compare the findings with a view to the actual office air-conditioning engineering design guide.First of all papers with relevant literature and correlation of gray system theory, selecte a set of relatively complete, adaptable relatively strong for the assessment of strengths and weaknesses of the Office of Air-conditioning airflow organizational design standards; followed by the establishment of internal flow field in three-dimensional solid modeling, meshing the completion of using the flow field calculation software, choose the more appropriate mathematical model, radiation model, meshing methods, iterative methods, the use of unstructured grid-based SIMPLEC algorithm, pairs of air-conditioned indoor air flow field in three-dimensional numerical simulation of turbulence obtained the internal parameters of the flow field; once again, of several air organizations program of quantitative and qualitative analysis, analysis of different forms of organization under the airflow of air quality, thermal comfort, etc., to conduct a comprehensive comparison of four ventilation and ultimately have to displacement ventilation can work out the indoor air quality district has a high, high thermal comfort and high ventilation efficiency; again, through theoretical argument, as well as comparison with the experimental data field of literature, the error of 10% within demonstrated the accuracy of mathematical and physical model; and finally the use of computational fluid dynamics (CFD) software research and blast parameters on the impact of air quality of indoor air, and its velocity field and temperature field in numerical simulation solver to finalize a better air supply parameters to achieve optimal air-conditioning system design.

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CLC: > Industrial Technology > Building Science > Housing construction equipment > Air-conditioning, heating, ventilation,and its equipment > Air-conditioning
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