Axial Fan Performance under the Influence of a Uniform Ambient Flow Field
In their application to air-cooled condensers, axial fans are often subject to the detrimental influence of ambient flow fields at their inlet or outlet. While effects have been investigated mostly under perpendicular cross-flow conditions on fans operating as part of an array in their target design...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2018-01-01
|
| Series: | International Journal of Rotating Machinery |
| Online Access: | http://dx.doi.org/10.1155/2018/6718750 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832559238542524416 |
|---|---|
| author | Till Heinemann Stefan Becker |
| author_facet | Till Heinemann Stefan Becker |
| author_sort | Till Heinemann |
| collection | DOAJ |
| description | In their application to air-cooled condensers, axial fans are often subject to the detrimental influence of ambient flow fields at their inlet or outlet. While effects have been investigated mostly under perpendicular cross-flow conditions on fans operating as part of an array in their target design point, this study aims at examining the integral influence of uniform ambient flow fields on a single axial fan over a wide operating range. For this purpose, a wind tunnel fan test rig has been designed and assessed. Multiple angles between uniform ambient flow field and fan axis are examined in their integral influence on the characteristic curve of two distinct industrial axial fans with varying inlet modifications. Increasingly with the fan flow rate, perpendicular inlet cross-flow was found to always have a detrimental influence on fan performance. The straight bladed fan reacted less sensitively than the forward skewed fan, and the adverse cross-flow influence could be reduced with an inlet guard grille and with short conical shroud extensions. Cross-flow at the fan outlet showed potential static fan pressure increases at low flow rates. |
| format | Article |
| id | doaj-art-c0282955f3984f7c82bad1ac0585b3e0 |
| institution | Kabale University |
| issn | 1023-621X 1542-3034 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Rotating Machinery |
| spelling | doaj-art-c0282955f3984f7c82bad1ac0585b3e02025-02-03T01:30:37ZengWileyInternational Journal of Rotating Machinery1023-621X1542-30342018-01-01201810.1155/2018/67187506718750Axial Fan Performance under the Influence of a Uniform Ambient Flow FieldTill Heinemann0Stefan Becker1Institute of Process Machinery and Systems Engineering, University of Erlangen-Nuremberg, Cauerstr. 4, 91058 Erlangen, GermanyInstitute of Process Machinery and Systems Engineering, University of Erlangen-Nuremberg, Cauerstr. 4, 91058 Erlangen, GermanyIn their application to air-cooled condensers, axial fans are often subject to the detrimental influence of ambient flow fields at their inlet or outlet. While effects have been investigated mostly under perpendicular cross-flow conditions on fans operating as part of an array in their target design point, this study aims at examining the integral influence of uniform ambient flow fields on a single axial fan over a wide operating range. For this purpose, a wind tunnel fan test rig has been designed and assessed. Multiple angles between uniform ambient flow field and fan axis are examined in their integral influence on the characteristic curve of two distinct industrial axial fans with varying inlet modifications. Increasingly with the fan flow rate, perpendicular inlet cross-flow was found to always have a detrimental influence on fan performance. The straight bladed fan reacted less sensitively than the forward skewed fan, and the adverse cross-flow influence could be reduced with an inlet guard grille and with short conical shroud extensions. Cross-flow at the fan outlet showed potential static fan pressure increases at low flow rates.http://dx.doi.org/10.1155/2018/6718750 |
| spellingShingle | Till Heinemann Stefan Becker Axial Fan Performance under the Influence of a Uniform Ambient Flow Field International Journal of Rotating Machinery |
| title | Axial Fan Performance under the Influence of a Uniform Ambient Flow Field |
| title_full | Axial Fan Performance under the Influence of a Uniform Ambient Flow Field |
| title_fullStr | Axial Fan Performance under the Influence of a Uniform Ambient Flow Field |
| title_full_unstemmed | Axial Fan Performance under the Influence of a Uniform Ambient Flow Field |
| title_short | Axial Fan Performance under the Influence of a Uniform Ambient Flow Field |
| title_sort | axial fan performance under the influence of a uniform ambient flow field |
| url | http://dx.doi.org/10.1155/2018/6718750 |
| work_keys_str_mv | AT tillheinemann axialfanperformanceundertheinfluenceofauniformambientflowfield AT stefanbecker axialfanperformanceundertheinfluenceofauniformambientflowfield |