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CFD Simulation and Study on Air-conditioning in Large and Complex Space as "Box Inside Box" Buildings of Museum

Author: LiChunRu
Tutor: ZhangHuan
School: Tianjin University
Course: Heating,Gas Supply, Ventilation and Air Conditioning Engineering
Keywords: Complex large space Radiant floor Stratified air conditioning Airflow Thermal comfort
CLC: TU831
Type: Master's thesis
Year: 2010
Downloads: 78
Quote: 0
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Abstract


With the development of modern architectural design ideas , new building not only the scale of the large space is huge , complex modeling , rely on the experience of the traditional design of the air-conditioning system , it is difficult to meet the various demands . Therefore, in the beginning of the design of the air conditioning , the use of computer simulation technology building load , predict airflow , temperature field, comfort index . For this purpose , combined with the project of Tianjin in northern town museum to be built , according to the museum complex characteristics of the tall space ( atrium ) , select the radiant floor preliminary design of both new wind of joint working and stratified air conditioning system air conditioning program . calculated using Fluent software simulation study of the two programs in winter and summer , the most unfavorable conditions of thermal comfort and air flow organization , and the simulation results were analyzed and compared to research to actual engineering design guidance value . In this paper, the museum complex tall space ( atrium ) model for the study , the principles and methods of calculation of CFD technology to provide theoretical support for the simulation study . Two separate programs on the basis of preliminary design calculations both in the fresh air of radiant floor joint working system and stratified air conditioning system air conditioning , a simulation study and evaluation . Radiant floor new wind of joint working role in complex large space , winter conditions with significant energy-saving effect . The radiant floor only provide indoor calculate the heat load of 30% of the heat is sufficient to satisfy the requirements of interior design parameters and good thermal comfort , indoor personnel are not satisfied with only 5% . Simultaneously, the system can also be in summer conditions to meet the comfort requirements , and the floor is no condensation . The stratified air conditioning system acting on the large space of the complex , and summer conditions with a good energy saving effect of energy saving of about 30% . This article and for winter conditions , the indoor thermal environment analysis and comparison of different air supply angle . The results show that the the return vents relative position and wind conditions in the preliminary design , the next inclination of 30o Airflow best . Concluded for complex tall space building air conditioning system , the program selected airflow prediction and thermal comfort design reference .

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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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