The Study Of Supply Air Parameters And Supply Air Volumn Calculation Formula When Using Partition Type Task Air Conditioning Alone

Task air conditioning can improve air quality, and can create a very good indoor environment, and also have energy saving potential, therefore it has higher application value. Task air conditioning application scope is more extensive. This article mainly uses numerical simulation method to study the partition type task air conditioning in the office room.Through comparison with related experimental research, verified by using numerical calculation model is accurate feasible, then for a follow-up study.According to the load characteristic of the office, the office is divided into two types. One type office is located in the inner zone of the building, considering only internal heat source heat dissipation, need cooling year-round. Other type office is located in the surrounding district of the building, need to consider the influence of heat transfer of palisade structure.Firstly, study the offices located in the inner zone of the building and in the surrounding district of the building. The article selects many groups of air distribution parameters, analyzed air distribution characteristics of velocity field and temperature field. Through the study presented the supply air parameters in the offices located in the inner zone of the building and in the surrounding district of the building. The article also pointed out that the office located in the surrounding district of the building in Chengdu can use the partition type task air conditioning alone in summer, with no need for the ambient air conditioning.Then, the author analyzed the other factors of the partition type task air conditioning. According to the research, the article pointed out that the return air inlet should be in the ceiling, we should set desk side boards. In order to expand to send air adjustment range, the air diffuser area should be a little bigger. In addition, the height of the air diffuser should just above the personnel height of sitting posture. The article assumed the person and the partition type task air diffuser is one to one correspondence. When the personnel density decreases in the office located in the surrounding district of the building, the temperature will rise. When the personnel density changes, the temperature changes very little in the office located in the inner zone of the building.Finally, the paper studies the influence of air quality and compares the temperature field and the pollutant concentration field by using the common air conditioning and the partition type task air conditioning in the same room model and the supply air parameters. The article points out that the partition type task air conditioning is better than the common air conditioning. The partition type task air conditioning can use less supply air volume to achieve the same effect of the common air conditioning. Thus, this paper points out that when use the partition type task air conditioning, the cooling load is less than the total cooling load in the room. When using the partition type task air conditioning in the office, the air conditioning design load should take 75% of the total cooling load.