| Summary: | 碩士 === 逢甲大學 === 建築所 === 102 === “Indoor Air Quality Management Act” has been passed by Legislative Yuan on November 8, 2011, and announced by the President on November 23, 2011. It accounts for the significance of the indoor air quality for our environment and thus makes Taiwan, next to South Korea, as the second country put indoor air quality management into legislation. This act extends the past outdoor air pollution control to indoor air management. It shows that the government pays more attention to the air quality of public spaces, such as the residential environment, official spaces, teaching spaces, etc. The joint endeavor of central government and local government in the implementation of this act will enhance the health and the living quality of the citizens of this country. The Act should be enacted legally one year after the announcement of the President. Therefore it has been implemented on November 23, 2012.
This study is to know whether the computer labs are providing healthy spaces for the users. The research takes the computer labs in the Jhongcin Tower of Feng Jia University as its main samples. Under the conditions of being with closed windows or with open windows, with or without air-conditioned system, various factors that affect the quality of indoor air were detected. The factors accounting for the quality of indoor air are as follows: basic living factors-temperature, humidity, chemical factors-CO2,CO,O3,HCHO,TVOC, physical factors-PM2.5,PM10, biological factors-bacteria, fungi. During the experiment, with the view of not affecting the activities of the users, the ”Spathiphyllum” was planted therein in most natural way, that the concentrations or the amounts of indoor pollutants could be observed and obtained instrumentally.
In this study, the space types of the computer labs, the number of users, the number of the computer units were measured, recorded and compared with the data obtained from relevant literature on indoor major pollutants and analyzed and the linear changes of concentration of indoor air were obtained. The main achievements of this study are as follows:
1 From the detection of the three computer labs, there were 9 pollutants: among them CO2, O3 and bacteria do not meet the standard, the concentrations or the amounts of CO, HCHO,TVOC,PM10 and fungi are acceptable.
2 Among the 50 EPA’s recommended plants, “Spathiphyllum” was planted in the computer labs that the changes of environmental pollutants could be observed”
3 With an average of 45 persons in the computer labs, the concentration of CO2 changes from 500-600ppm to 2000ppm after about one hour.
4 With 50 persons in the class, when the concentration came to 2383ppm(an average gained from six observations , standard value: 1000ppm). After putting 7 pots of “Spathiphyllum”, the concentration of CO2 would come to 2123ppm, with a reduction of 260ppm.
5 The concentration of ozone, O3 would be 0.163, higher than the standard by 0.06ppm, the average of six observations, after putting 7 pots of “Spathiphyllum”, the condition was improved significantly, the concentration came to 0.021, which met the standard.
6 With 50 persons in class, the colonies of bacteria came to 2493.9CFC/m3( an average of the six measured data, higher than the acceptable value:1500CFC/m30), after putting 7 pots of “Spathiphyllum”, the amounts of colonies of bacteria came to 1313.7CFC/m3, which met the standard.
7 To analyze the data, the negative correlation group are subdivided:
High negative correlation:O3 and bacteria
Middle negative correlation: temperature, CO, PM2.5, PM10
Low negative correction: humidity, CO2, HCHO, fungi.
8 By calculation, a 6-inch-pot of “Spathiphyllum” removes the amount of 45ppmCO2 per hour(the metabolic exhaling amount per hour of a 22kg man.)
Keywords: indoor air quality, computer labs, indoor planting
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