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A TALE OF 2 CONTROL SYSTEMS.

Author(s) : MCMASTERS R. L.

Type of article: Article

Summary

THE PAPER OFFERS AN IMPROVED SYSTEM OF REHEAT CONTROL FOR A SI MPLE AIR-CONDITIONING PLANT. THE NORMAL SYSTEM USES A HUMIDISTAT SENSOR TO LOWER COOLING COIL TEMPERATURE ON A RISE IN SPACE HUMIDITY. SPACE TEMPERATURE THEN DROPS TO THE LOW END OF THE TEMPERATURE CONTROLLER PROPORTIONAL BAND BEFORE REHEAT OPERATES. THE SUGGESTED SYSTEM USES A HUMIDISTAT SENSOR TO BRING ON THE REHEAT COIL IN A SIMILAR SITUATION, EFFECTIVELY RAISING TEMPERATURE AND CAUSING AN IMMEDIATE ACTION FROM THE TEMPERATURE CONTROLLER TO INCREASE COOLING. THE REQUIRED EFFECT ON HUMIDITY AND TEMPERATURE WILL LAY IN A NARROWER BAND. D.W.H.

Details

  • Original title: A TALE OF 2 CONTROL SYSTEMS.
  • Record ID : 1991-1294
  • Languages: English
  • Source: Heat. Pip. Air Cond. - vol. 62 - n. 9
  • Publication date: 1990/09
  • Document available for consultation in the library of the IIR headquarters only.

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