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Displacement ventilation performance - office space application (TN 3/93)

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Explains the principle of displacement ventilation and its advantages. Reports on measurements of velocity and temperature fields in three modern office spaces to analyse the performance of the incorporated displacement ventilation system, based on thermal comfort and temperature...

Overview

This publication explains the principle of displacement ventilation and its advantages. It reports on measurements of velocity and temperature fields in three modern office spaces to analyse the performance of the incorporated displacement ventilation system, based on thermal comfort and temperature gradient assessment. It states the measurements at one of the sites were used to verify the predicted data obtained by a microclimate computer model based on computational fluid dynamics techniques. The model was subsequently used to study the effect of cold surfaces, infiltration, floor obstruction and supply air flow rates. The publication also states that although the application of displacement ventilation is more difficult in office spaces with low ceiling heights, acceptable conditions were measured in two of the three sites considered. However, both measurements and predictions indicated that secondary air flows resulting from infiltration and cold surfaces can adversely affect the ventilation performance and reduce thermal comfort. Finally the publication states that in the application of displacement ventilation care should be taken to minimise these extraneous effects.

Product details

  • Published: January 1993
  • Publisher: BSRIA
  • Author: Alamdari F
  • ISBN-10: 0860223388
  • ISBN-13: 9780860223382