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Development of the large capacity semi-hermetic single screw compressor for ice storage chiller.

Number: pap. 1359

Author(s) : MORI K., MIYAMURA H., GOTO H., et al.

Summary

Use of air conditioners has been increasing due to economic development. As a result, ratio of the electrical consumption by the air conditioning equipment is continuously increasing, and the lack of electricity at day time or the remaining of electricity at night time is becoming a problem. Ice storage technology is one of the methods to moderate the peak demand and is used widely. Ice storage is the technology that ice will be generated in the night time and the ice will be used in the day time for air conditioning. This will enable to flatten the demand of electricity between day time and night time. The large capacity ice storage chiller is required in the market; therefore we developed the largest capacity semi-hermetic single screw compressor in the world with the capacity of 490TR in the ice generation mode and 730TR in the cooling mode. For this design, the internal volume index was optimized for both the operation of ice generation and cooling mode. In addition, as for the critical speed which would be an issue in the development of the large compressor, the bearing location was optimized to avoid the resonance with the rotating speed. Consequently, 5% of COP improves from the existing model especially for ice storage chiller. We believe that we can contribute to the environment protection with the high efficient air conditioning equipment by using this compressor.

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Pages: 6

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Details

  • Original title: Development of the large capacity semi-hermetic single screw compressor for ice storage chiller.
  • Record ID : 30024325
  • Languages: English
  • Source: 2018 Purdue Conferences. 24th International Compressor Engineering Conference at Purdue.
  • Publication date: 2018/07/09

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