Calcolatrice Diametro Idraulico Gratuita

Calcola il diametro idraulico di un condotto rettangolare.

mm
mm

Hydraulic Diameter

342.9 mm

Cross-Sectional Area120,000 mm^2
Wetted Perimeter1,400 mm

Hydraulic Diameter vs Duct Width (a)

Vedi formula →

Formula

## Hydraulic Diameter The hydraulic diameter allows non-circular conduits to be analysed using the same formulas developed for circular pipes. ### Formula **D_h = 4 A / P** where A is the cross-sectional flow area and P is the wetted perimeter. For a rectangular duct with sides a and b: D_h = 4ab / (2(a+b)) = 2ab / (a+b). For a circle, D_h equals the actual diameter.

Esempio Risolto

A rectangular HVAC duct 400 mm wide and 300 mm tall.

  1. 01Area = 400 x 300 = 120,000 mm^2
  2. 02Perimeter = 2 x (400 + 300) = 1,400 mm
  3. 03D_h = 4 x 120,000 / 1,400 = 342.9 mm