基于空气负离子浓度的建筑室内空气清洁度评价

对深圳某办公楼部分房间的空气负离子浓度分布进行了观测研究,利用空气离子单极系数和安倍空气离子评价指数对不同设备制冷的办公室空气质量进行了评价分析。结果表明:自然通风状态下的空气清洁度比机械通风状态下高,利用可再生能源制冷技术的室内空气质量比普通空调制冷技术的好,放置负离子发生器对室内空气质量有显著提高。因此提高室内负离子浓度可以创造舒适的空气环境,并建议把空气负离子浓度列为室内环境的监测和评价指标,为今后城乡建设规划、城市林业规划和环境能源保护提供科学依据和设计思路。

Evaluation of Air Cleanness inside Building Based on Negative Air Ion Concentration

Based on observing negative air ion concentration of some rooms in an office-building in Shenzhen, the air quality in the rooms cooled with various equipments was assessed by using air ion polarity ratio and air ion assessment index （CI）. The results showed that the indoor air cleanness with the natural ventilation was better than mechanical ventilation, using renewable energy for cooling was better than normal air-conditioning, and placing the negative air ion generator could improve indoor air quality significantly. So enhancing the concentration of negative air ions could create a comfortable indoor air environment, and the negative air ion concentration should be used as a monitoring and evaluation indicator of the indoor environment, so as to provide a scientific basis and design concept for urban planning and construction, urban forestry planning, energy planning and environmental protection in the future.