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Found 4 calculators
HVAC and building services
Duct air velocity
Calculates duct air velocity from volumetric flow rate and cross-sectional area.
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HVAC and building services
Duct area from flow and velocity
Calculates duct cross-sectional area from volumetric flow rate and air velocity.
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HVAC and building services
Rectangular duct equivalent diameter
Calculates a helper equivalent diameter for a rectangular duct from its side lengths, without HVAC equipment selection.
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HVAC and building services
Sanitary system design
Two pipe-sizing modules: pressurized Hazen-Williams and gravity Manning with velocity, loss and utilization checks.
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