An Advanced Microturbine System with Water-Lubricated Bearings
A prototype of the next-generation, high-performance microturbine system was developed for laboratory evaluation. Its unique feature is its utilization of water. Water is the lubricant for the bearings in this first reported application of water-lubricated bearings in gas turbines. Bearing losses an...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2009-01-01
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| Series: | International Journal of Rotating Machinery |
| Online Access: | http://dx.doi.org/10.1155/2009/718107 |
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| _version_ | 1832567717858639872 |
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| author | Susumu Nakano Tadaharu Kishibe Tomoaki Inoue Hiroyuki Shiraiwa |
| author_facet | Susumu Nakano Tadaharu Kishibe Tomoaki Inoue Hiroyuki Shiraiwa |
| author_sort | Susumu Nakano |
| collection | DOAJ |
| description | A prototype of the next-generation, high-performance microturbine system was developed for laboratory evaluation. Its unique feature is its utilization of water. Water is the lubricant for the bearings in this first reported application of water-lubricated bearings in gas turbines. Bearing losses and limitations under usage conditions were found from component tests done on the bearings and load tests done on the prototype microturbine. The rotor system using the water-lubricated bearings achieved stable rotating conditions at a rated rotational speed of 51,000 rpm. An electrical output of 135 kW with an efficiency of more than 33% was obtained. Water was also utilized to improve electrical output and efficiency through water atomizing inlet air cooling (WAC) and a humid air turbine (HAT). The operation test results for the WAC and HAT revealed the WAC and HAT operations had significant effects on both electrical output and electrical efficiency. |
| format | Article |
| id | doaj-art-3867073c5d9d4808b16ea7cf11459d13 |
| 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-3867073c5d9d4808b16ea7cf11459d132025-02-03T01:00:45ZengWileyInternational Journal of Rotating Machinery1023-621X1542-30342009-01-01200910.1155/2009/718107718107An Advanced Microturbine System with Water-Lubricated BearingsSusumu Nakano0Tadaharu Kishibe1Tomoaki Inoue2Hiroyuki Shiraiwa3Energy and Environmental Systems Laboratory, Hitachi Ltd., Hitachi, Ibaraki 319-1221, JapanEnergy and Environmental Systems Laboratory, Hitachi Ltd., Hitachi, Ibaraki 319-1221, JapanMechanical Engineering Research Laboratory, Hitachi Ltd., Hitachinaka, Ibaraki 312-0034, JapanEngineering Division, Hitachi Engineering & Services Co., Hitachi, Ibaraki 317-0073, JapanA prototype of the next-generation, high-performance microturbine system was developed for laboratory evaluation. Its unique feature is its utilization of water. Water is the lubricant for the bearings in this first reported application of water-lubricated bearings in gas turbines. Bearing losses and limitations under usage conditions were found from component tests done on the bearings and load tests done on the prototype microturbine. The rotor system using the water-lubricated bearings achieved stable rotating conditions at a rated rotational speed of 51,000 rpm. An electrical output of 135 kW with an efficiency of more than 33% was obtained. Water was also utilized to improve electrical output and efficiency through water atomizing inlet air cooling (WAC) and a humid air turbine (HAT). The operation test results for the WAC and HAT revealed the WAC and HAT operations had significant effects on both electrical output and electrical efficiency.http://dx.doi.org/10.1155/2009/718107 |
| spellingShingle | Susumu Nakano Tadaharu Kishibe Tomoaki Inoue Hiroyuki Shiraiwa An Advanced Microturbine System with Water-Lubricated Bearings International Journal of Rotating Machinery |
| title | An Advanced Microturbine System with Water-Lubricated Bearings |
| title_full | An Advanced Microturbine System with Water-Lubricated Bearings |
| title_fullStr | An Advanced Microturbine System with Water-Lubricated Bearings |
| title_full_unstemmed | An Advanced Microturbine System with Water-Lubricated Bearings |
| title_short | An Advanced Microturbine System with Water-Lubricated Bearings |
| title_sort | advanced microturbine system with water lubricated bearings |
| url | http://dx.doi.org/10.1155/2009/718107 |
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