Parametric study of air sampling cyclones /
| Main Author: | |
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| Other Authors: | , , , |
| Format: | Thesis Book |
| Language: | English |
| Published: |
1991.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Abstract: | An improved method has been developed for the design of single and multiple inlet aerosol sampling cyclones. A single inlet design methodology allows aerodynamic particle (AED) cutpoint diameter predictions to be made for a standard Stairmand cyclone which has had an alteration in its outlet tube diameter. Three cyclone body diameters, 38.10 mm, 57.15 mm, 88.90 mm, were tested, while three different exhaust tubes sizes 26.7 mm, 42.9 mm, and 68.3 mm (inside diameter) were used to vary the exhaust tube diameter in the cyclone. Tested cyclone flowrates ranged from 16.3 LPM to 124 LPM. The measured particle AED cutpoints went from a minimum of 4.0 μm to a maximum of 18.8 μm. A functional relation using two nondimensional parameters, the cyclone flow Reynolds numbers, Re(Df), and the ratio of the cutpoint particle diameter to the cyclone diameter, (D[0.5]/D[c]) . A multiple inlet cyclone was tested for two different length ratios, which allows for a degree of flexibility in the design of new systems. The size of the body diameter of the multiple inlet cyclones varied from 38.10 mm to 139.7 mm, where the two different lengths were twice and four times that of the cyclone body diameter. The minimum tested cyclone flowrate was 9.39 LPM, while the maximum tested flowrate was 1027 LPM. Particle AED outpoints ranged from 3.9 μm to 17.1 μm. The data gathered was used to develop a technique for predicting the performance for a cyclone which had a length twice that of the cyclone diameter. The predicted flow rate for an 88.90 mm diameter cyclone differed by only 15 percent from the experimentally determined flowrate for a particle cutpoint of 10.0 um AED diameter. |
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| Item Description: | Typescript (photocopy). Vita. "Major subject: Mechanical Engineering." |
| Physical Description: | xviii, 141 leaves : illustrations ; 29 cm |
| Bibliography: | Includes bibliographical references. |