To solve the problem of air flowrate measurement in an active chilled-beam system

a test rig of active chilled-beam was designed

and the influences of different primary air flowrate on the induced performance of an active chilled beam were investigated. The results show that the induction ratio of the chilled beam increases with the increasing primary air volume when the primary air volume is less than 80 m3/h. The induction ratio tended to 3.17 when the primary air volume later reached 80 m3/h. There is a quadratic relationship between the pressure of the cold plenum and the primary air flow. Under the 4 mm nozzle of the chilled beam

the fitted curve of the static pressure with the primary air is y = 0.0225x2 + 0.0101x. The active chilled-beam model was then set up

the effect of the primary air volume on the induced performance was simulated numerically

and the simulation results were verified based on the test results. The relative errors between the experimental results and the numerical results reached 10.5% and 8.8% for the induction ratio and the pressure of cold plenum

respectively. The overall results and the trend of the simulation are in good agreement with the measured values

which indicates that the simulation has high reliability.