Indoor Natural Wind Simulation And Study On Its Thermal Comfort Application

In the modern society,the rhythm of the people lives become more and more quickly, along with society competition continuously turns worse,the pressure that people confront become more and more great. Modern office Building makes the space that people exist in incline toward close to turn. Although the central air condition system provided an comfort indoor environment, as the invariable wind never give people an environment stimulation that make people tired.people who has a long-term survival in this kind of environment usually has various health problem, The modern city crowd has been looking forward to the nature space, bland and changeful natural wind makes people pleasure. However, because of the heavy work and the space restriction, people can hardly has an opportunity to contact with the nature intimately. The content of the thesis is that how to realize the natural wind in the room, so that people can receive the blow of the breeze.Primarily nature wind was carried on sample analysis, at this research we selected four typical spaces for wind sampling, such as forest, open spaces between the buildings, lakeside, and building crest. Each point we take for three times. The wind velocity sample was analyzed and calculated, included average velocity, velocity probability distribution, turbulence intensity, and spectral function. We also analyzed the relation between the characteristic parameter and the surface roughness.The fractal and chaotic characteristics are emphasized in the thesis. According to the fractal theory of TAKENS, the sample was carried on phace space reconstruction, Then we analyzed self-correlation function of the wind sample, sumed up the regular and character of the natural wind sample after the phace space reconstruction, calculated the fractal diamention of the wind sample,and so on. The analysis data provides new theoretical basis.We introduced a new method for the natural wind simulation.that is chaotic function.in the process of simulation.we selected eight kinds of wind signals, include 6 sets of chaotic function,a set of random data, and a set of invariable data. The auto control procedure was written in the Labview. the computer sent the information to the transducer. The transducer output connected the fan. Thus the natural wind was carried out in the room. The realization wind signal was analyzed and calculated and we found that the wind sample from different kind of function signal has the different velocity character.For the sake of understanding the comfort of the natural wind, in this research the wind sample that realized was carried on comfort evaluation.the subjective evaluation model TSV and TCV that brought forward by the ARSHAE were selected.in this dissertation, two wind sample was selected to carry on the comfort evaluation,one was the chaotic function signal that most conformed with natural wind character,the other was invariable wind.compared the two result,we found the tested person taked more pleasure in that natural wind simulation sample.