Research On Temperature Influencing Thermal Comfort In VAV System

people worship an internal building environment that is safer, more comfortable and more intelligentized with the development of modernization and the improvement of people's living standard in twenty years. At the same time, environmental problems have become more and more urgent. Human beings now pay more attention to the effective use of energy and the sustainable development. Researchers in domestic air-conditioning industry have focused on a Variable-Air-Volume air-conditioning system with superior comfort in combination with energy saving and high efficiency. With the extensive application of air-conditioning technology, a higher requirement has been put forward not only on the thermal comfort but also in the thermal health on indoor thermal environment. So, this paper studies temperature which influences on thermal comfort in VAV system.First of all, this thesis discusses specialty,sort and composing of VAV system, then mainly investigates and summarizes four kinds of basal control, i.e. control of indoor temperature,control of outdoor air volume,control of unvaried pressure & variable pressure and total air volume.On the second part, the thesis analyses indoor parameters like indoor temperature,humidity and airflow velocity etc which influence thermal comfort, then analyses the human body temperature mechanism and introduces the connection and distinction in thermal comfort and thermal feeling. then it draws a conclusion that human body's thermal comfort only exists in dynamic thermal environment As a result, the thesis demonstrates that the technique of dynamic modulation in the thermal environment is necessary and rational.Thirdly, I introduce thermal comfort equation and analyse thermal comfort index, then from CAV system I establish mathematical model of temperature in VAV system, finally applies the MATLAB simulation technology to get temperature changed curve and make it at the range of thermal comfort. In the end the paper makes summary to full text and previews the application.