Air torque position damper energy consumption analysis

Bikić, Siniša; Uzelac, D Ema; Bukurov, Maša; Tašin, Slobodan

doi:10.1016/j.enbuild.2015.04.009

Cited by 4 publications

(1 citation statement)

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“…The effects of blade profiles and damper locations in the duct system (on the measurement accuracy and the model adequacy) argued in this paper are consistent with the findings that ATP dampers are highly prone to impacts when they are more open, i. e. with the low moment of airstream force exerted on the damper. The specified impacts can be neutralized for the purpose of air velocity measurements provided the blade angle of attack is set to render the damper more closed, which will undoubtedly increase the damper sensitivity and the accuracy of air velocity measurements [11] with a simultaneous increase in the damper pressure drop and energy dissipation [12].…”

Section: Resultsmentioning

confidence: 99%

Accuracy analysis of air torque position dampers based on blade profiles and damper locations

Bikić

Bukurov

Radojcinb³

et al. 2018

THERM SCI

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The primary concern of this paper is a single-blade air torque position damper used for the indirect measurement of volumetric air-flow rates by measuring the moment of airstream force exerted on the blade and the damper position. The purpose of the paper is to analyze the accuracy of the air velocity measurements and the adequacy of the damper mathematical model on the basis of the blade profile and the damper location in a duct system. The analysis was performed on the basis of the experimentally obtained results. Four different blade profiles (flat, Vgroove, symmetrical airfoil, and non-symmetrical airfoil blades) were taken into account, as well as three different damper locations in the duct system (at the duct entrance, within the duct, and at the duct exit). Two blade orientations at the duct entrance were examined relative to the direction of air-flow (with front and rear mounting flanges). It was determined that the blade profile and particularly the damper location in the duct system affect the measurement accuracy and the adequacy of the damper mathematical model provided the blade angle of attack is less than or equal to 30°, i. e. within the range of a more open damper.

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Section: Resultsmentioning

confidence: 99%