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A COMPUTER-CONTROLLED SYSTEM FOR MEASURING BUILDING AIR EXCHANGE RATES USING SULPHUR HEXAFLUORIDE AS A TRACER GAS.

Author(s) : ALEVANTIS L. E., HAYWARD S. B.

Summary

DESCRIBES A COMPUTER-CONTROLLED SYSTEM FOR MEASURING AIR EXCHANGE RATES IN LARGE BUILDINGS. THE SYSTEM CONSISTS OF A DATA ACQUISITION UNIT CONTROLLED BY A PERSONAL COMPUTER, A GAS CHROMATOGRAPH EQUIPPED WITH A MOLECULAR SIEVE COLUMN AND A SCANDIUM-TRITIUM ELECTRON CAPTURE DETECTOR, A WEATHER STATION AND A CARBON DIOXIDE ANALYSER. THE SYSTEM CAN MONITOR UP TO 16 DIFFERENT LOCATIONS, AUTOMATICALLY CALIBRATING ITSELF AND DISPLAYING VENTILATION RATES AT THE END OF THE SAMPLING PERIOD. OXYGEN CANNOT ENTER THE ELECTRON CAPTURE DETECTOR, THUS REDUCING THE TIME BETWEEN SAMPLES AND EXTENDING THE LIFE OF THE DETECTOR.

Details

  • Original title: A COMPUTER-CONTROLLED SYSTEM FOR MEASURING BUILDING AIR EXCHANGE RATES USING SULPHUR HEXAFLUORIDE AS A TRACER GAS.
  • Record ID : 1988-2425
  • Languages: English
  • Publication date: 1987/08
  • Source: Source: Proc. Indoor Air '87, Berl.
    vol. 3; 165-169; 1 fig.; 5 ref.

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