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OPTIMAL CONTROL APPLIED TO AIR CONDITIONING IN BUILDINGS.

Author(s) : NIZET J. L., LECOMTE J., LITT F. X.

Summary

OPTIMAL CONTROL THEORY IS APPLIED TO THE SIMULATION OF HEATING, VENTILATING, AND AIR CONDITIONING SYSTEMS IN BUILDINGS. THE PROBLEM IS AS FOLLOWS: GIVEN A SYSTEM OF ORDINARY DIFFERENTIAL EQUATIONS THAT DESCRIBES THE THERMAL BEHAVIOUR OF A COMMERCIAL BUILDING, AND ITS AIR CONDITIONING SYSTEM, TRY TO FIND THE OPTIMAL AIR CONDITIONING POLICY LEADING TO A MINIMUM OF THE TOTAL ENERGY COST. THE FLOW RATE OF AIR, AT CONSTANT TEMPERATURE, IS CHOSEN AS THE VARIABLE. THE MINIMIZING ALGORITHM USES THE CONJUGATE GRADIENT METHOD. INTEGRATION OF THE ORDINARY DIFFERENTIAL EQUATIONS IS PERFORMED BY A FIFTH ORDER EXPLICIT RUNGE-KUTTA-FEHLBERG METHOD, WITH VARIABLE STEP SIZE.

Details

  • Original title: OPTIMAL CONTROL APPLIED TO AIR CONDITIONING IN BUILDINGS.
  • Record ID : 1985-2102
  • Languages: English
  • Publication date: 1984
  • Source: Source: ASHRAE Trans.
    vol. 90; n. 1B; 587-600; 11 fig.; 16 ref.
  • Document available for consultation in the library of the IIR headquarters only.

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