Trox developed a new measurement method and a new type of damper blade, for which a patent application has already been filed.
The new damper blade is part of the new VAV terminal units Type TVE.
The requirement to save energy often leads to the installation of larger air handling units, which in turn results in lower airflow velocities. So it is necessary to change the measurement principle in order to measure even very small volume flows, the company stated. Another frequent issue is space at the installation site, or the lack of it. This is why development efforts have to aim at products that are fairly easy and safe to install and provide good measurement results.
VAV terminal units of Type TVE apply a new measurement principle as the volume flow rate is measured not with a probe or sensor, but by means of the damper blade itself. This design allows for a reduction in length and helps to ensure precise measurement results even in case of unfavourable upstream conditions; with dynamic measurement, this is even independent of the airflow direction.
Matthias Kasprowicz, managing director, Trox Middle East, said: “This world premiere of VAV is an complete new innovation in VAV technology. For the first time ever the volume flow measurement of an VAV was integrated into the blade itself. Hence, the Trox damper blade is revolutionizing the VAV segment since it is eliminating space constraints of VAVs in the ducting. Due to the high precision sensors and its two way functionality you can place it at any duct position you want, without a need of considering a certain duct space before or after the measurement.”