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Performance analyses of capacity control scheme for a machine tool cooler.

Author(s) : WANG F. J., CHANG T. B., WANG Y. J., et al.

Summary

Highly accurate manufacture in machining industry can only be obtained with precise temperature control of the coolant (oil or water). Machine tool with more accurate, stable and advancing the precision of the working component cannot be developed without appropriate cooling. However, the process coolers are facing the control hunting of cooling temperature and the dramatic variation of heat load in high-accuracy machining. In this study, both hot-gas by-pass scheme and suction valve regulation for capacity control have been proposed. Effects of using capillary tube and thermostatic expansion valve along with different capacity control scheme will be investigated. Cooling performance and power consumption of the cooler system will also be measured and analyzed by comparison with different opening percentage of throttling valve under specific coolant temperature. The experimental results reveal that the proposed cooler systems with different capacity control schemes are not only cost-effective than an inverter driven system, but also can perform energy-saving and precise temperature control specific for high-accuracy machine tool cooling.

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Format PDF

Pages: pp. 115-121

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Details

  • Original title: Performance analyses of capacity control scheme for a machine tool cooler.
  • Record ID : 2010-0925
  • Languages: English
  • Source: ACRA-2009. The proceedings of the 4th Asian conference on refrigeration and air conditioning: May 20-22, 2009, Taipei, R.O.C.
  • Publication date: 2009/05/20

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