不同空調通風路徑對工作空間室內污染物移除效果之比較

COMPARISONS ON THE PERFORMANCES OF THE INDOOR AIR AND THERMAL ENVIRONMENT IN WORKING SPACES WITH VARIANCE VENTILATION ROUTES

本研究是以工作空間不同空調通風路徑為研究對象，於足尺實驗室中，運用計算流體動力學（CFD, Computational Fluid Dynamics）紊流模型之電腦解析方法，並藉以與實驗室測定數據比對，確認數值解析之準確性，針對工作空間室內環境因子中的CO2濃度場分佈狀態、換氣次數、室內平均濃度、空氣齡、空氣交換效率進行定量的比較分析。目的在於模擬不同空調通風路徑對室內污染物移除的影響，建立工作單元空間不同出風方式之基本空氣環境模式，進而改變出風口位置以尋求較佳出風口配置模式，綜合歸納評估結果在以「健康」考量下，對工作空間之良好空調通風路徑提出建議給予設計者參考。

This study is to compare the performance of indoor-pollutants elimination by different air flow routes in a working room. The numerical simulation was performed using CFD techniques which the standard k-ε turbulence model was adopted. The measured results in the full-scale chamber were obtained to validate the simulated results. The benchmark properties of the ventilation efficiency, such as the concentration of carbon dioxide, the air-change rate (ACH), the age-of-air and the air exchange efficiency (AEE), were calculated to find out the ideal location of the vents. The position of the occupant, meanwhile, was considered in sedentary work. The air-draft phenomina by the various airflow routes were evaluated. Findings of this study will provide the designers a better way toward a healthy and energy-saving approach.