Evaluation of indoor air quality using the decibel concept based on carbon dioxide and TVOC
Evaluation of indoor air quality using the decibel concept based on carbon dioxide and TVOC
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DOI：
10.1016/s0360-1323(99)00042-6
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发表时间：
2000-11
影响因子：
7.4
通讯作者：
M. Jokl
中科院分区：
文献类型：
--
作者：
M. Jokl
两个新的单位提出了室内空气质量的评价使用分贝的概念，这给了一个更好的近似人类感知的气味强度，相比，CO2和TVOC的浓度尺度：decoribdiox和decititabox。在根据Yaglou的心理-生理量表上，可以由人类气味传感器检测到的最弱气味等于1，并且对应于5.8%的不满意百分比（PD）的下限，并且相当于（a）485 ppm -0 dB的CO2阈值浓度（气味CO2）- dCd（decidibdiox），和（B）TVOC阈值浓度为50 μg/m3- 0 dB（气味TVOC）-0 dTv（decitriol）。上限由毒性的初始值（a）CO2- 15，000 ppm - 134 dCd和（B）TVOC -25，000 μg/m3- 135 dTv确定。假设最佳值对应于PD= 20%，对于不适应和适应的人，PD=30%的容许值，以及长期耐受值（确定SBS范围）和短期耐受值（毒性范围的开始）。用于评估噪音的相同数字可用于评估空气质量，此外，还可确定单个成分（目前为声音和气味）对环境总体质量的贡献。新的单位dCd和dTv可以表示空气污染的增加或减少，即通过使用空气净化器，新的建筑材料等，建议的dCd和dTv系统与BSR/ASHRAE 62-1989 R兼容，可用于确定通风所需的新鲜空气量，通过改进的方法，考虑到所需的室内空气质量的不同水平。
Two new units are proposed for the evaluation of indoor air quality using the decibel concept, which give a much better approximation of the human perception of odour intensity, compared to the CO2and TVOC concentration scales: the decicarbdiox and the decitvoc. On the Psycho-Physical Scale according to Yaglou, the weakest odour that can be detected by the human smell sensors is equal to 1 and corresponds to the lower limit of percentage dissatisfaction (PD) of 5.8% and is equivalent to (a) a CO2threshold concentration of 485 ppm — O dB (odour CO2) — dCd (decicarbdiox), and (b) a TVOC threshold concentration of 50 μg/m3— O dB (odour TVOC) — O dTv (decitvoc). The upper limit is determined by the initial value of toxicity (a) CO2— 15,000 ppm — 134 dCd, and (b) TVOC — 25,000 μg/m3— 135 dTv. It is supposed that optimal values corresponding to PD=20%, admissible values to PD=30% for unadapted and adapted persons and that long-term tolerable values (determining SBS range) and short-term tolerable values (beginning of toxic range) are stated as well. The same figures used to evaluate noise can be used to evaluate air quality, additionally the contribution of individual constituents (at present acoustic and odour) to the overall quality of the environment can be ascertained. The new units dCd and dTv can express an increase or decrease in air contamination, i.e. by using air cleaners, new building materials, etc. The proposed system of dCd and dTv is compatible with BSR/ASHRAE 62-1989 R which can be used to determine the required volume of fresh air for ventilation by an improved method which takes into account different levels of required indoor air quality.