TY - JOUR
TI - Experimental calibration of the mathematical model of Air Torque Position dampers with non-cascading blades
AU - Bikić Siniša M
AU - Uzelac Dušan N
AU - Bukurov Maša Ž
AU - Radojčin Milivoje T
AU - Pavkov Ivan S
JN - Thermal Science
PY - 2016
VL - 20
IS - 2
SP - 567
EP - 578
PT - Article
AB - This paper is focused on the mathematical model of the Air Torque Position  dampers. The mathematical model establishes a link between the velocity of  air in front of the damper, position of the damper blade and the moment  acting on the blade caused by the air flow. This research aims to  experimentally verify the mathematical model for the damper type with  non-cascading blades. Four different types of dampers with non-cascading  blades were considered: single blade dampers, dampers with two cross-blades,  dampers with two parallel blades and dampers with two blades of which one is  a fixed blade in the horizontal position. The case of a damper with a  straight pipeline positioned in front of and behind the damper was taken in  consideration. Calibration and verification of the mathematical model was  conducted experimentally. The experiment was conducted on the laboratory  facility for testing dampers used for regulation of the air flow rate in  heating, ventilation and air conditioning systems. The design and setup of  the laboratory facility, as well as construction, adjustment and calibration  of the laboratory damper are presented in this paper. The mathematical model  was calibrated by using one set of data, while the verification of the  mathematical model was conducted by using the second set of data. The  mathematical model was successfully validated and it can be used for  accurate measurement of the air velocity on dampers with non-cascading  blades under different operating conditions. [Projekat Ministarstva nauke  Republike Srbije, br. TR31058]