I'm studying on Heat Balance Equations for Shading Device and Adjacent Glass at Engineering Reference V.6.0 (p.269).
(Interior blind system)
As far as I understand, user can input custom convective coefficients for any surface, such as walls, floors, windows, etc. using SurfaceProperty:ConvectionCoefficients object.
My question is,
Does the hi value (shown in Figure 90, p.269) is substitute by 4 (user input convective coefficient) at the inside of the window surface (ext window) regarding interior blind system?
SurfaceProperty:ConvectionCoefficients,
ext window, !- Surface Name
Inside, !- Convection Coefficient 1 Location
Value, !- Convection Coefficient 1 Type
4; !- Convection Coefficient 1 {W/m2-K}
I'm little bit confusing due to the concept the gap convective coefficient (hcv).