Enter a unique name for this object.

Enter the length of the duct.

Unit: m

Enter the hydraulic diameter of the duct. Hydraulic diameter is defined as 4 multiplied by cross section area divided by perimeter

Unit: m

Enter the cross section area of the duct.

Unit: m2

Enter the inside surface roughness of the duct.

Unit: m

Default: 0.0009

Enter the coefficient used to calculate dynamic losses of fittings (e.g. elbows).

Unit: dimensionless

Minimum: 0.0

Default: 0.0

Conduction only Default value of 0.943 is equivalent to 1.06 m2-K/W (R6) duct insulation.

Unit: W/m2-K

Default: 0.943

Enter the overall moisture transmittance coefficient including moisture film coefficients at both surfaces.

Unit: kg/m2

Default: 0.001

Optional. convection coefficient calculated automatically, unless specified

Unit: W/m2-K

Optional. convection coefficient calculated automatically, unless specified

Unit: W/m2-K