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变风量方式是节省空调耗能的重要手段之一,它越来越受到人们的重视。随之而来的是必须解决变风量方式的特殊问题,其中包括控制问题。在变风量方式中,随着负荷的变化,送、回风的风量和风管内的静压也要发生变化。因此要有新的控制功能。在集中送风系统内,调节风量、静压的目的是:保持空调空间为正压以防止渗透风的侵入;为末端装置在适当动作范围内而维持风管内的静压不变;确保空调空间所需的最小新风量。维持建筑物内外静压差为2.5毫米水柱。
The variable air volume method is one of the important means to save energy consumption of air conditioners, and it has received increasing attention from people. What follows is the need to address the special issues of VAV methods, including control issues. In the variable air volume method, the air volume of the sending and returning air and the static pressure in the air duct also change with the change of the load. Therefore, new control functions are required. In the centralized air supply system, the purpose of adjusting the air volume and static pressure is to maintain a positive pressure in the air-conditioning space to prevent the penetration of the infiltration air; to maintain the static pressure in the air duct within the proper range of operation of the terminal device; to ensure the air-conditioning space The minimum amount of fresh air required. Maintain a static pressure difference of 2.5 mm water column inside and outside the building.