A Study on the Influence of Correlative Variables of office space on the concentration of Volatile Organic Compounds-The office spaces in Taiwan for example

• Main Authors: Chao-Hsing Li, 李昭興
• Other Authors: Che-Ming Chiang
• Format: Others
• Language: zh-TW
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/757qvp

碩士 === 國立成功大學 === 建築學系碩博士班 === 90 === Abstract Referred to series studies of indoor air quality (IAQ) in architecture environment control, this study emphasized on the kinds of interior decoration material, decorated area and relative influence factors with the relative discussion of contaminants concentration of TVOC and formaldehyde. In this survey, the characteristic of the space, the kinds of building material, decorated area, room volume, were investigated. Another the concentration of TVOC and formaldehyde, air temperature, related humidity were monitored and air change rate and Air leakage value were measured. Based on the theory review of VOC contaminants emission mass balance and results of field study, the investigated dates were used to establish the correctional factor for emission intensity of decorative material were often used in office space and empirical model related to formaldehyde and TVOC concentration. This model can be control reference for decorated areas of the materials were often used in office space. This paper’s major findings are as below: 1、The results of the field investigation reveal that the materials were often used in office space. The sequences were wood-based material(29%)、polyvinyl chloride flooring(21%)、carpet(18%)、gypsum board (18%)、mineral fiber board (14%). 2、According to the result of field measure , the correlation analysis on the off-working hours concentration of formaldehyde, TVOC and decorative intensity divided into air leakage value can obtain the equation；the equation1：C( the concentration of formaldehyde)=0.066(air leakage value/ decorative intensity)-0.41 (R2=0.50)；the equation2：C( the concentration of TVOC)=0.52(air leakage value/ decorative intensity)-0.38 (R2=0.56). It mean that 「the value of leakage/ decorative intensity were more high , the concentration of interior contaminants were more low. 3、By the theory of mass balance and the way of regression to analysis the correlation on correlative influence factor with concentration of TVOC and formaldehyde. We establish the empirical model of the formaldehyde and TVOC concentration. The numerous equation is (1)The empirical model of formaldehyde concentration： ER C=--------(-124.12+1.98×Da1+1.52×Da2+2.14×Da3) ACH×VOL (2)The empirical model of TVOC concentration： ER C=--------(9.55+1.31×Da1+0.99×Da2+2.02×Da3) ACH×VOL where C: the concentration of formaldehyde, TVOC, (mg/m3)；ER the emission rate of formaldehyde, TVOC (mg/m2hr)； ACH: Air Change Rate (Air leakage value) (hr-1)；VOL：interior Volume(m3)；Da1：wood-base decorated area(m2). Da2：gypsum board decorated area(m2). Da3：carpet decorated area(m2). 4、The factor emission intensity of each decorative material be established The kind of materials The kind of contaminants 1、wood-based materialThe factor of emission intensity gypsum board 2、The factor of emission intensity 3、CarpetThe factor of emission intensity Concentration of formaldehyde 1.98 1.52 2.14 Concentration of TVOC 1.31 0.99 2.02 Key：expirical model,office space,decorated area, TVOC,formaldehyde