温度控制与污染物浓度控制相独立的通风空调系统
摘要：为解决传统通风空调系统温度控制与污染物浓度控制需求风量不匹配的问题，提出了一种温度控制与污染物浓度控制相独立的通风空调系统结构和控制方法。通过室内负荷计算及PM2.5浓度计算，对比分析了北京、上海、深圳地区在保证室内温湿度需求时典型办公室内的PM2.5浓度水平。结果表明，该通风空调系统可以同时满足室内温度和PM2.5浓度的控制要求，尤其在室外气候温和且大气污染较重时期对室内环境的保障效果更为明显。以北京地区2018年为例计算，在室内温度相同情况下，采用该通风空调系统室内PM2.5浓度全面达标，而采用传统通风空调系统则有10.3%的时间超标。
关键词：温度污染物浓度独立控制通风空调系统变风量PM2.5浓度
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Ventilation and air conditioning systems with independent control of air temperature and pollutant concentration
Abstract: In order to solve the problem of air volume mismatch between temperature control and pollutant concentration control in traditional ventilation and air conditioning systems, this research proposes a ventilation and air conditioning system structure and its control method with independent control of air temperature and pollutant concentration. Through the calculation of indoor load and PM2.5 concentration, the PM2.5 concentration levels in typical offices in Beijing, Shanghai and Shenzhen are compared and analysed. The results show that the new system can satisfy the control requirements of indoor temperature and PM2.5 concentration simultaneously. The protection for the indoor environment of the system is outstanding, especially in a moderate climate with heavy air pollution. This research calculates the indoor PM2.5 concentration in a typical office room in Beijing during 2018. At the same indoor temperature, the indoor PM2.5 concentration fully meets the standard with the new system, and exceeds the limit in 10.3% of the year with the traditional system.
Keywords: temperature; pollutant concentration; independent control; ventilation and air conditioning system; variable air volume; PM2.5 concentration;
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