Paper 2
A Novel Method to Measure the Air
Entrainment Ratio of an Active Chilled Beam
Mika Ruponen
and John A. Tinker
School of Civil Engineering, University of Leeds, UK
Abstract
This paper presents a new
simplified method to measure the air entrainment ratio of an active
chilled beam or induction unit. The method uses a single anemometer and a
simple purpose built measurement venturi together with the primary airflow
rate. The new method is described and its calibration procedure is
explained. Measured results are compared with results obtained according
to European Standard prEN15116 with two extra sensors measuring the after
coil air temperature. Results show that the new rectangular venturi method
produces reliable and consistent results.
Key words: chilled
beam, air entrainment ratio, measurements, venturi method.
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