貨櫃空間增設前室對室內負壓值保護力實測研究

Experimental Study on the Protective Effect of Adding an Antechamber to Indoor Negative Pressure Value in 20-Foot Container Space

新型流行傳染病蔓延，各國相繼利用貨櫃改建負壓空間，但此空間多數缺乏前室，在沒有前室空間的情況
下人員進出開關門會直接影響室內壓力變化，室內空氣也會隨著正負壓反轉使得室內空氣外洩，如室內含有污
染性氣溶膠，將會直接影響到戶外衛生安全。本研究探討20呎貨櫃屋增設前室後對負壓空間的負壓值變化探討與分析，供日後類似的設施之設計參考。研究實驗結果分為三大項，第一是未增設前室之負壓變化，研究結果
發現人員進出開門瞬間會造成負壓加乘影響，導致負壓值急遽上升，即便在20回換氣次數、-9.5Pa的情形會使
負壓上升至-11.3Pa，且在關門時會下降且反轉成正壓狀態。第二增設前室後室內負壓變化，研究結果發現，在
12回換氣次數(含)下以會反轉成正壓。第三是前項條件下針對人員進出前室時開關門瞬間對於負壓空間的壓力
值變化分析，結果僅12回換氣次數以下的實驗組有部分結果反轉成正壓的情況。綜合上述實測結果，20呎貨
櫃改造負壓空間在有無前室時最顯著的差異為以下兩點; 1.有效維持負壓狀態，避免負壓歸零2.人員進出前室時
開關門的急緩對內部負壓效果仍有一定的壓力波動影響。對於今後20呎貨櫃要改造成負壓用途時，建議加設前室與進出管理機制。

This study is to investigate the negative pressure protection ability of the negative pressure after buildan anteroom facilities in the 20-foot container. The results of this study are mainly divided into three major category. First is the negative pressure change state in the container without build anteroom in it, results of this categoryillustrate that the negative pressure will increase at the moment when the person open the door, resulting in a sharp increase in the negative pressure value. In the case of 20 ACH and -9.5Pa, the negative pressure rises to -11.3Pa, and as long as it is within -9.5Pa, it will definitely drop and reverse to a positive pressure, even if the ACH or the value of negative pressure is increased. The second is the changing state of negative pressure in the container after the addition of an anteroom. The results of this categoryillustrate that the negative pressure will be reversed within 12 ACH, and the ACH increased to 12 times, negative pressure value is above-4.0Pa, No reverse positive pressure result was detected. The third is the negative pressure change state in the container due to the slowing of the entry and exit speed under the previous condition. The results showed that the experimental group only partially reversed to positive pressure within 12ACH.