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Air supply systems for HVAC&R controls.

Author(s) : BENTSEN L. J.

Type of article: Article

Summary

Pneumatic devices, used in HVAC&R control, require clean, dry air at correct pressures to operate satisfactorily. These devices contain filters, orifices, nozzles and valve mechanisms that are affected by the combination of oil, dirt and water. Devices that contain small orifices, as small as 0.002 inch diameter, are the most susceptible. Oil, when mixed with fine dirt particles, causes a build-up which is especially harmful to many pneumatic devices. Water, or condensation, causes corrosion and affects filter performance.

Details

  • Original title: Air supply systems for HVAC&R controls.
  • Record ID : 1998-2272
  • Languages: English
  • Source: ASHRAE Journal - vol. 39 - n. 9
  • Publication date: 1997/09
  • Document available for consultation in the library of the IIR headquarters only.

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