頁籤選單縮合
題 名 | 狹窄粒徑分佈氣膠產生器之設計與性能評估=Design and Evaluation of a Narrow Size-Distribution Aerosol Generator |
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作 者 | 簡弘民; 周崇光; | 書刊名 | 勞工安全衛生研究季刊 |
卷 期 | 5:2 1997.06[民86.06] |
頁 次 | 頁63-74 |
分類號 | 555.56 |
關鍵詞 | 氣膠產生器; 虛擬衝擊器; 狹窄粒徑分佈氣膠; Aerosol generator; Virtual impactor; Narrow size-distribution aerosols; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究開發一個可產生狹窄粒徑分佈兼具高質量濃度的氣膠產生器,它的主要組 件為一個 Delavan 霧化噴嘴以及一具改良式虛擬衝擊器; 使用噴霧揮發的原理,產生多徑 分佈的液態氣膠,再利用重力沉降以及衝擊原理去除較大及較小的微粒,產生粒徑分佈之幾 何標準偏差 (GSD) 小於 1.5 的固態或液態氣膠。 本研究分別使用玉米油、氯化鈉和螢光素鈉水溶液產生高濃度之狹窄粒徑分佈氣膠,結果顯 示玉米油氣膠氣質的質量中位氣動直徑 (MMAD)=7.2 μ m, GSD=1.48, 氣膠質量產生率 (AGR)=13.8mg/min。氯化鈉或螢光鈉的 MMAD 介於 0.93~ 4.61 μ m, GSD 介於 140~ 1.50 ,而 AGR 則介於 0.04-15.7mg/min。 最後並以 1% 之 NaCI 溶液測試氣膠產生器經過八小 時連續操作的穩定性, 得到其 MMAD 和 GSD 的相對標準偏差值為 0.8%,而 AGR 的相對標 差值等於 9.2%。 |
英文摘要 | An aerosal generator capable of generating a narrow size-distribution aerosol with high mass concentrations was developed. The aerosol generator consists of a Delavan simplex nozzle and an improved virtual impactor. A polydisperse aerosol is generated through atomization/ evaporation processes. Gravity is used to remove large particles and the improved virtual impactor is employed to remove small particles. The geometric standard deviation of the size distribution of the generated aerosol is less than 1.5. The performance of the aerosol generator has been evaluated using corn-oil, sodium chloride and uranine solution, respectively. the results indicated that the MMAD of the corn-oil droplets was 7.2 μ m and the GSD was 1.48. Aerosols generated from a NaCL or uranine solution was found to have a MMAD in the range of 0.93 to 4.61 μ m and GSD varying from 1.40 to 1.50. Aerosol generation rate varied from 0.04 to 15.7 mg/min depending upon the particle size produced. |
本系統中英文摘要資訊取自各篇刊載內容。