Project Description

Linear low-induction diffuser: An innovative solution to a challenging application

Northern Quebec Prihoda rep, Armeco, came to us with a challenging worker safety and productivity application their client, industrial contractor Cytech-Corbin had encountered with laminated floor manufacturer Prolam.

Ambient temperatures of 35C (95F) around one process dictated frequent worker breaks to avoid overheating. If temperatures at workers’ chest level (~ 1.2 meters/4 ft) could be kept at 28C (82F) or lower, workers could more easily prevent overheating and require fewer breaks. An extremely high delta between supply and room temperatures resulted in an extremely high induction rate of room air. This meant that traditional methods of distribution like perforations or nozzles would not adequately cool at the worker level.

Multiple concepts were considered as potential solutions, from nozzles with special microperfoated cones ….. to using perforations to create an air curtain that would prevent induction ….. to a microperforated half-round diffuser with fabric curtains, which would direct cool air downward and prevent induction.

Extensive CFD modeling and lab testing by our corporate parent company, Prihoda s.r.o., proved the half-round diffuser concept to be viable, and a prototype unit was built and installed at Prolam.

Deflection issues uncovered during prototype field testing were corrected by angular adjustments to
Prihoda’s patented Directional Microperforation.

Field test results were outstanding! Cytech-Corbin is very happy and sees strong long-term potential for this solution.