Study On The Thermal Environment Of Air Condition Room In Winter

With the rapid improvement of our economy and people's living standard, central air condition system is increasing day by day, and family heat pump air condition becomes more and more popular, which lead to the dramatic growth of buildings that adapt air condition system to heat themselves.There are many advantages to heat by air condition system, but there are also many problems. The air distribution of air condition room is often designed according to the summer outdoor parameters. Thus, in winter, the hot air will arise with the influence of buoyancy, which result in the decline of vertical temperature gradient and produce a successive of problems. All above these will degenerate the thermal comfort and decrease the energy utilization efficiency. Though people have the primary knowledge about the indoor thermal comfort under different controlling systems, conserve energy and air quality and so on, they are still lack of overall and quantitative analysis and evaluation. So to research indoor thermal environment character and human thermal comfort is a practical thesis.The article quantitatively analyses the winter hot air's distribution regulation in the human work region and reveals the regulation of temperature gradient forming and change and the influence to human thermal comfort. After test research, it clarifies the thermal characteristic regulation of indoor environment in winter air condition room. The mainly characteristic regulations are the over-great vertical temperature gradient and the over-low mean radiation temperature of air condition room.The reasons that affect human thermal comfort in air condition room include the integral human thermal comfort and local discomfort. Evaluating thermal comfort should synthesize the two facets. Both the mean radiation temperature of air-condition room and the dissymmetric radical temperature character will produce un-benefit effect to human thermal comfort in winter. Local discomfort is an important reason of human discomfort in winter air condition room.Basis of the method of computation fluid dynamics, through PHOENICS computation simulation, with the premise that flow and temperature distribution is basically consistent, the article further analyzes the distribution regulation of indoor parameters in air condition room and reflects the characters which can't give out and reveal only by experience and practical measurement on the spot. At the same time, itprovides some very excellent forecast and evaluation methods by use of CFD.The article bases on the simulation computation and makes a contrast between the energy consume and comfort of rooms with different air supply method. And contracts the temperature field by shutter air supply and diffuser air supply. Above the conclusions, in some degree, have an instructive and directive significance to actual object practice.