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目前在设计洁净室的空调送风系统时,送风量的确定多采用设计规范中的经验数据,这往往会使得所设计的换气次数过大,造成能源的大量浪费。为了减少这种现象的发生,需要依据洁净室室内实际颗粒物浓度和工艺要求的洁净度等级来建立颗粒污染物负荷控制换气次数的理论计算模型。本文在对原有洁净室理论计算模型进行完善和改进的基础上,建立了新的计算模型;而后通过实验方法对洁净室可能达到的一些典型条件进行了实际模拟,将实测结果与理论计算的结果进行了比较,并以此对理论计算模型进行了修正。通过理论和实验研究可知,洁净室室内的颗粒物浓度主要取决于室内的发尘量、换气次数的大小和洁净室室内气流组织形式。
Currently in the design of clean air-conditioned air supply system, the air supply to determine more to use the design specifications in the empirical data, which often make the design of the number of ventilation is too large, resulting in a lot of energy waste. In order to reduce the occurrence of this phenomenon, it is necessary to establish a theoretical calculation model of the particle pollution load control ventilation times based on the actual indoor particle concentration in the clean room and the cleanliness level required by the process. In this paper, based on the improvement and improvement of the original theoretical model of clean room, a new calculation model is established. After that, some typical conditions that may be achieved in the clean room are simulated by experiments. The measured results are compared with the theoretical calculation The results are compared and the theoretical calculation model is modified. Through theoretical and experimental studies, it can be seen that the concentration of particulate matter in the clean room interior mainly depends on the amount of dust generated in the room, the number of air changes and the form of indoor air flow in the clean room.