pressure difference
[EN 12792:2003, 296]:difference between pressures measured at two points or levels in fluids or gases.
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pressure difference, available external static
[EN 14511-1:2022, 3.3]:positive pressure difference measured between the air (or water) outlet section and the air (or water) inlet section of the unit, which is available for overcoming the pressure drop of any additional ducted air (or water) circuit.NOTE Expressed … Continue reading →
pressure difference, external fan
[EN 12792-2003, 142]:difference between the total gauge pressure at the outlet of a unit and the total gauge pressure at the inlet
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[EN 13141-7:2021, 3.12]:pressure increase induced by the ventilation unit given as difference between the static pressures at the unit outlet and the unit inlet.Note 1 to entry: The external static pressure difference is used to determine the maximum air volume … Continue reading →
pressure difference, internal static
[EN 14511-1:2022, 3.30]:negative pressure difference measured between the air (or water) outlet section and the air (or water) inlet section of the unit, which corresponds to the total pressure drop of all components on the air (or water) side of … Continue reading →