A Simplified Energy Balance (RC) Model for DSF System

developed through Project FAIR – EFRE1035 – CUP D53C23003090005 offered as DeepSeeBit · DSF Studio, a Vinamravigyan Technologies brand

Inputs

Weather data

Choose a weather file or drag one here — .xls, .xlsx or .csv

Boundary conditions

Use values from the weather file

Solar irradiance on outer facade Sol W/m²

External wind speed V_amb m/s

External air temperature T_a °C

Room air temperature T_r °C

Geometric parameters

Height H m

Cavity depth D m

Width W m

Outer pane (transparent/opaque)

Emissivity ε_ow

Transmittance τ_ow

Reflectance ρ_ow

Thermal conductivity k_ow W/mK

Thickness d_ow m

Inner pane (transparent/opaque)

Emissivity ε_iw

Transmittance τ_iw

Reflectance ρ_iw

Thermal conductivity k_iw W/mK

Thickness d_iw m

Cavity layer

Specific heat of air Cp J/kgK

Discharge coefficient Cd

Density of air ρ_air kg/m³

Cavity vertical zones N

single-lump cavity, the original model

Sky depression T_a − T_sky K

Shading layer

Coverage from the top cov %

no blind, base case

Longwave emissivity ε_sh

Solar transmittance τ_sh

Solar reflectance ρ_sh

Longwave transmittance τ_ir

Derived

—

Solver settings

Algorithm

Initial guess

Function tolerance ftol

Step tolerance xtol

Gradient tolerance gtol

Max function evaluations

Acceptance limit

Robust retry

Output

Solution status

Run a solve to see the status.

A Simplified Energy Balance (RC) Model for DSF System

Results viewer

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Plot

Results viewer i Temperature Heat flux Cavity 2D Energy balance

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Plot i

Results viewer

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