The Research On The Application Of Underfloor Air Distribution In Open Office Building

As a new air condition system ,the Underfloor Air Condition system(UFAD) had been widely used in Europe for its various advantages ,such as good air quality, economical,energy conservation, flexibility, conveniency for cooperating and so on. However, nowadays, the UFADsystem is not popular in home,most of the which are used in the occasions that produce high heat and need to be cooled all the year round,for example, the communication room.And in other occasions, for lacking of corresponding design criterions and experience,many people are afraid of the high cost,uncomfortble cold and blowy feelings on the feet, scrap and junk falling into the UFADsystem,the dewing and dehumidify problems,etc.Based on these problems,this paper will focus on how to solve them in order to use it in the opening office.The paper bring forward the suitable applied situations by analysing characteristic of various kinds of architectures.Through analysing swirl diffuser peculiarity, we come to the issues that should be noted in its design process.Providing the heat flow above the heat source calculating formula is inconsequential in the literature through dimension harmonious principles.Using the CFD method to compare the four kinds of load calculating way at present about the UFAD,getting the conclusion which method is fit for the opening offices,this is important in the UFAD applications. And through the CFD simulation,put the stess on the distance between the supply diffuser and the body,supply air tempreture,supply air velocity and indoor air quality when consider the accumulating dust on the floor ,provide some design instructional advices of UFAD.The paper sets the UFADsystem and the VRV with fresh air system in the same project,and using the CFD simulating to compare them charicters.At last,conclude the UFAD's application foreground,and provide the development direction for the future research.