便利商店室內空氣品質與人體舒適度影響因子及改善策略研究

隨著現代生活及工作型態的改變，平均每人每天80至90%時間是待在室內空間，因此室內空氣品質的議題越來越受到重視，而在研究室內空氣品質議題時，也需要透過人體舒適度調查及瞭解室內氣流分布狀況才能對室內研究場所作完整性的評估探討。因此本研究針對一家學校內的便利商店進行室內空氣品質檢測與人體舒適度調查，室內氣流分布狀況模擬，另外也分別探討室內氣流分布與二氧化碳濃度空間分布差異及人體舒適度模式值與實際調查值間差異。研究結果顯示，研究場所中二氧化碳濃度值在平日檢測日比假日檢測日高，且大部分檢測時段出現超過二氧化碳濃度標準值，在人體舒適度調查部分，不論是模式值與實際調查均以適中狀態比例較多，且符合可接受的人體舒適度範圍，而全體受測者的人體舒適度模式值與實際調查結果相似，在場所室內氣流分布狀況中有出現短路及死域現象，而出現死域的區域相似於較容易累積二氧化碳濃度的區域，最後在改善策略研擬探討中，較佳改善策略為改成置換式通風方式、水平通風方式及改變送風角度至30°，其中再考量花費經費的限制下，以改變送風角度至30°為最佳的方式。

關鍵字

二氧化碳；計算流體力學模擬；預測平均回答指標；預測不滿意百分比；送風不滿意程度；垂直溫差

並列摘要

With the change in lifestyle, each person spends an average of 80~90% a day in the indoor environment. Therefore, the indoor air quality plays an important role in the public health. The airflow field and human thermal comfort in the building room are also the necessary factors on the integrity assessment of the indoor environment. This study focused on the measurements of indoor air quality, investigations of human thermal comfort and airflow fluid in a campus convenience store. The difference between simulation and measurement were discussed. The results revealed that the carbon dioxide concentration was higher in the weekday than that in the weekend. The concentrations of carbon dioxide were out of limits in most of time. According to the investigation of human thermal comfort, the neutral state highly occupied the mode values and the questionnaire results. It showed the acceptable range of human thermal comfort and the similarity between the mode values and questionnaire results. However, there were a short circuit and death zone phenomenon in the indoor air distribution. The areas of dead zone were easily accumulated by carbon dioxide. The final discussion provides better improvement strategies, the displacement ventilation, the horizontal ventilation and the modification of 30 ° air supply angle. After considering the cost limits, the modification of 30 ° air supply angle is the best strategy.

並列關鍵字

Carbon dioxide ； Computational fluid dynamics ； Predicted Mean Vote ； Predicted Percentage of Dissatisfied ； Draught ； Vertical Air Temperature Difference

參考文獻

ASHRAE HVAC Fundamentals Handbook, 1997.

Balocco, Carla., Lio, Pietro. (2011) Assessing ventilation system performance in isolation rooms. Energy and Buildings 43, 246-252.

Cheong, K.W., Chong, K.Y. (2001) Development and application of an indoor air quality audit to an air-conditioned building in Singapore. Building and Environment 36, 181-188.

Chung, K.C., Hsu, S.P. (2001) Effect of ventilation pattern on room air and contaminant distribution. Building and Environment 36, 989-998.

ISO 7730, 2005.

國際替代計量

便利商店室內空氣品質與人體舒適度影響因子及改善策略研究

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