discharge coefficient, louvre
[EN 12792-2003, 107]:actual discharge air flow rate, divided by the theoretical discharge air flow rate at a given pressure difference across a louvre.
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displacement air diffusion
[EN 12792-2003, 108]:air diffusion where the mixing of supply air and room air external to the air terminal device is intended to be at a minimum.(see also air diffusion and air terminal devices)
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[EN 12792-2003, 109]:maximum horizontal distance (Lv) from the centre of an air terminal device to the rectangle circumscribing the specified isovel and independent of the distance from the floor.(see isovel)
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[EN 12792-2003, 205]:maximum vertical distance from the floor (or reference plane) to the specified isovel.
Continue reading →displacement air diffusion, width of the v (m/s) isovel
[EN 12792:2003, 398]:maximum width of the rectangle circumscribing the specified isovel perpendicular to the intended direction of flow and independent of the distance from the floor.
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