Simulation Study About The Ceiling Air Supplu Air-distribution In The Winter

With the development of social economy and people living standard rise, people on indoor environmental comfort requirement enhances unceasingly. Comfortable indoor air conditioning environment, to people’s health, life and work has a very important role in promoting. However, relative to the summer of indoor environment quality research, the study of indoor air conditioning environment becomes more scarce. Moreover, people in the indoor air distribution design, mostly according to the working condition of the summer air conditioning design and ignore the winter, lead to air conditioning system in both in running in winter can’t satisfy people’s comfort requirements, also caused the waste of energy.Winter conditions, the author of this paper top airflow organization mode of air distribution system design and optimization problems, adopt the method of CFD numerical simulation for the type of air distribution to simulate a detailed and comprehensive analysis, find out the more suitable for this kind of air conditioning system optimization method of each parameter, improve the winter conditions of indoor environment of comfort, for certain guidance for the design of the system.Winter conditions analysis of various factors on the influence of the indoor air distribution system, comprehensive analysis, with reference to the role of the way and the importance of find a suitable simplified modeling principle, and the physical model was established based on the simplified principle for simulation, proved that the reliability of the modeling principles. Based on the simplified principle for the winter top mode of air distribution condition of the physical model, and using the model of the various factors that affect the winter air distribution simulation analysis and calculation.Through to affect the air had a greater influence on the organization of the supply air velocity and supply air temperature two parameters of simulation calculation and analysis, it is concluded that using the method of curve fitting can be better than the working condition of discrete points selected parameters of air distribution, and according to different characteristics of room air conditioning system can be optimized to a certain extent. On these two parameters optimization, because of the influence of the working condition of supply air velocity of the airflow organization relative to the supply air temperature difference is bigger, first after the optimization of supply air velocity calculation, after the optimization method of supply air velocity to optimize the supply air temperature than the reversion method can optimize the air distribution in a greater degree, improve the indoor environment of comfort.With different characteristics of room air conditioning system for air supply optimization, it is concluded that using the method of curve fitting can to a certain extent, optimize the air conditioning system of air distribution. The room floors had a greater influence on the choice of air supply Angle, the load has little effect of the room. And lower floors in the room, the choice of air supply Angle is bigger also, the optimization of air distribution effect is more obvious. After the room height reached a certain degree, the Angle of supply air distribution optimization effect is more and more weak, refers to disappear.For on indoor air distribution by different room load caused by the negative effect, by changing the position of air supply outlet and change the delivery method can improve this kind of negative effect to a certain extent, further optimize the indoor environment, and the improvement of the former is superior to the latter.