Background... An independent Swedish report shows generally low accuracy on flow-measurement of plenum boxes in the ventilation market.
{"Image DocumentName": "Background...An independent Swedish report shows generally low accuracy on flow-measurement of plenum boxes in the ventilation market.", "Image ImageDescription": "Quotes from the report: For ceiling diffusers with plenum box we have found that the distance to disturbing source often has larger impact for calculation of air flow than the suppliers indicates. Even the position of the damper often has influence but that is not mentioned in the suppliers instructions for calculations of air flow... We request that suppliers correct the majority of K-values and improve the documentation and labelling . If a diffuser has more K-values it provides substantially better opportunities to get correct measuring results . This we had to take seriously.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}