浴廁通風系統依其配置分成下列三種類型;1. 天花板機械進風側牆機械排風(Model A),2. 窗戶自然進風天花板機械排風(Model B),與3. 天花板機械進風天花板機械排風(Model C)等類型。本研究以示蹤氣體量測技術,分析此三種通風系統之通風效率。以局部空氣品質指標、汙染物移除效率、局部平均空氣齡、與室內空氣交換率做為通風系統的評估指標。研究結果顯示;1. 局部空氣品質指標範圍Model A為0.97~1.10、Model B為0.74~0.95、Model C為0.66~1.3,2. 汙染物移除效率(PRE),由大到小依序為Model A (PRE = 1.05±0.09 )、Model C (PRE = 0.92%±0.1 )、Model B (PRE = 0.89±0.09 ),3. 局部平均空氣齡分佈範圍Model A為485~545sec、Model B為644~693 sec、Model C為516~583 sec,與4. 室內空氣交換率(AEE),由大到小依序為Model A (AEE = 47.63%±0.41 )、Model C (AEE = 46.27%±0.32 )、Model B (AEE = 45.37%±0.29 )。
The ventilation systems of bathrooms are divided into the following modes; 1. Model A: Ceiling mechanical supply and wall mechanical exhaust, 2. Model B: Window natural inlet and ceiling mechanical exhaust, and 3. Model C: Ceiling mechanical supply and ceiling mechanical exhaust. This research employed the technology of tracer gas test to analyze their ventilation efficiency with local air quality index (QI), pollutant removal efficiency (PRE), local mean age of air (LMA), and air exchange efficiency (AEE). Results show that 1. QI of Models A, B, and C ranged 0.97~1.10, 0.74~0.95, and 0.66~1.3, respectively, 2. PRE in the order from higher to lower levels was Model A (PRE = 1.05±0.09), Model C (PRE = 0.92%±0.1), and Model B (PRE = 0.89±0.09), 3. LMA of Models A, B, and C ranged 485~545, 644~693, and 516~583 sec, respectively, and 4. AEE in the order from higher to lower levels was Model A (AEE = 47.63%±0.41), Model C (AEE = 46.27%±0.32), and Model B (AEE = 45.37%±0.29).