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On the accuracy and repeatability of the pulse and step-down tracer gas methods for measuring mean ages of air.

Author(s) : ZHANG J. S., SHAW C. Y., MAGEE R. J.

Summary

Tests were conducted in a full-scale office room with internal heat loads and furnishing. It was found that the error band due to the combined effect of the limited accuracy and repeatability was wider for the pulse method than for the step-down method. An example is provided to illustrate how these results can be used to interpret the measurements of mean ages of air in evaluating the performance of ventilation systems.

Details

  • Original title: On the accuracy and repeatability of the pulse and step-down tracer gas methods for measuring mean ages of air.
  • Record ID : 1996-1763
  • Languages: English
  • Source: ASHRAE Transactions.
  • Publication date: 1995/01
  • Document available for consultation in the library of the IIR headquarters only.

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