Experimental and Numerical Investigations of Air Cooling for a Large-Scale Motor
This article experimentally and numerically investigates the thermal performance of a 2350-kW completely enclosed motor, which is cooled through an air-to-air heat exchanger. The air in the heat exchanger includes external and internal flow paths. The external air driven by the rotation of the centr...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2009-01-01
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| Series: | International Journal of Rotating Machinery |
| Online Access: | http://dx.doi.org/10.1155/2009/612723 |
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| _version_ | 1849473557821652992 |
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| author | Chih-Chung Chang Chiao-Hung Cheng Ming-Tsun Ke Sih-Li Chen |
| author_facet | Chih-Chung Chang Chiao-Hung Cheng Ming-Tsun Ke Sih-Li Chen |
| author_sort | Chih-Chung Chang |
| collection | DOAJ |
| description | This article experimentally and numerically investigates the thermal performance of a 2350-kW completely enclosed motor, which is cooled through an air-to-air heat exchanger. The air in the heat exchanger includes external and internal flow paths. The external air driven by the rotation of the centrifugal fan goes through the heat exchanger mounted on the top of the frame. The internal air absorbs heat released from the stator and the rotor and then transfers the heat to the heat exchanger through the motion of two axial fans and the rotor. Several test rigs have been set up to measure the performance of the fan and the motor. The Fluent software package is adopted to analyze the complicated thermal-fluid interactions among the centrifugal fan, two axial fans, heat exchanger, stator, and rotor. The measured data, including the fan performance curves and the temperature profiles of the heat exchanger and the stator, show good agreement with the simulated results. The numerical calculations also show that the nonuniform external flow distribution through the heat exchanger and the air leakage between the axial fan and the rotor reduces the cooling ability of the motor. A detailed discussion is also included to improve the motor cooling performance. |
| format | Article |
| id | doaj-art-caabc9d4a9484890b5bc2c25f6cd0b7c |
| institution | Kabale University |
| issn | 1023-621X 1542-3034 |
| language | English |
| publishDate | 2009-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Rotating Machinery |
| spelling | doaj-art-caabc9d4a9484890b5bc2c25f6cd0b7c2025-08-20T03:24:06ZengWileyInternational Journal of Rotating Machinery1023-621X1542-30342009-01-01200910.1155/2009/612723612723Experimental and Numerical Investigations of Air Cooling for a Large-Scale MotorChih-Chung Chang0Chiao-Hung Cheng1Ming-Tsun Ke2Sih-Li Chen3Department of Mechanical Engineering, National Taiwan University, Taipei 106, TaiwanDepartment of Mechanical Engineering, National Taiwan University, Taipei 106, TaiwanDepartment of Energy and Refrigerating Air-Conditioning Engineering, National Taipei University of Technology, Taipei 106, TaiwanDepartment of Mechanical Engineering, National Taiwan University, Taipei 106, TaiwanThis article experimentally and numerically investigates the thermal performance of a 2350-kW completely enclosed motor, which is cooled through an air-to-air heat exchanger. The air in the heat exchanger includes external and internal flow paths. The external air driven by the rotation of the centrifugal fan goes through the heat exchanger mounted on the top of the frame. The internal air absorbs heat released from the stator and the rotor and then transfers the heat to the heat exchanger through the motion of two axial fans and the rotor. Several test rigs have been set up to measure the performance of the fan and the motor. The Fluent software package is adopted to analyze the complicated thermal-fluid interactions among the centrifugal fan, two axial fans, heat exchanger, stator, and rotor. The measured data, including the fan performance curves and the temperature profiles of the heat exchanger and the stator, show good agreement with the simulated results. The numerical calculations also show that the nonuniform external flow distribution through the heat exchanger and the air leakage between the axial fan and the rotor reduces the cooling ability of the motor. A detailed discussion is also included to improve the motor cooling performance.http://dx.doi.org/10.1155/2009/612723 |
| spellingShingle | Chih-Chung Chang Chiao-Hung Cheng Ming-Tsun Ke Sih-Li Chen Experimental and Numerical Investigations of Air Cooling for a Large-Scale Motor International Journal of Rotating Machinery |
| title | Experimental and Numerical Investigations of Air Cooling for a Large-Scale Motor |
| title_full | Experimental and Numerical Investigations of Air Cooling for a Large-Scale Motor |
| title_fullStr | Experimental and Numerical Investigations of Air Cooling for a Large-Scale Motor |
| title_full_unstemmed | Experimental and Numerical Investigations of Air Cooling for a Large-Scale Motor |
| title_short | Experimental and Numerical Investigations of Air Cooling for a Large-Scale Motor |
| title_sort | experimental and numerical investigations of air cooling for a large scale motor |
| url | http://dx.doi.org/10.1155/2009/612723 |
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