Puspitasari, Dewi (2018) Sertifikat Presenter_The Effect of 45º Upward Flow Straightener Position on Flow Uniformity in Sampling Point of Chimney. IOP Science Publishing.
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Abstract
Air pollution is one of the factors that can cause the decreasing of air quality in urban areas, especially in areas close to the industry. The government made a policy for the industrial sector to conduct the emission quality measurements in their operating chimneys. Commonly, the quality of emissions from the chimney sampling point is still above the permissible threshold. This condition occurs due to the lack of uniform emission flow near the sampling point. Based on the EPA method, the exhausted gas flow condition near the sampling point must have uniform velocity and small helicity. Therefore in this study the author tried to modify the channel in the chimney by installing a flow straightener (FS) in order to reduce helicity and the degree of uniformity of the flow. The upward 450 FS was chosen. For further research, position of flow straightener at a chimney vertical distance was set at 0.75D, 1D and 1.25D from lower disturbance. Based on the computational results, the best KV value of 32.32% with FS 1.25 D and KV value of 35.52% with 0.75 D were obtained. The closer to the sampling point, the KV value will improve. This result indicated that the accuracy of measurement of emission quality at the sampling point can be improved.
| Item Type: | Other |
|---|---|
| Subjects: | #4 Decrees > Certificate / Certificate Ethic |
| Divisions: | 03-Faculty of Engineering > 21201-Mechanical Engineering (S1) |
| Depositing User: | Dr. Dewi Puspitasari |
| Date Deposited: | 21 May 2023 12:26 |
| Last Modified: | 21 May 2023 12:26 |
| URI: | http://repository.unsri.ac.id/id/eprint/104265 |
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