C1 0.025[W/(m*K)] First constant for convective heat transfer coefficient (ha) calculation
C2 0.73[W/(m^2*K^(4/3))] Second constant for convective heat transfer coefficient (ha) calculation
sigma 5.67e-8[W/(m^2*K^4)] Stefan-Boltzmann constant
epsilon 0.90 Surface emissivity
Te 0[degC] External temperature
Ti 20[degC] Internal temperature
Rsi_n 0.13[m^2*K/W] Internal surface resistance (normal)
Rsi_p 0.20[m^2*K/W] Internal surface resistance (protected)
Rse 0.04[m^2*K/W] External surface resistance
lambda_p 0.035[W/(m*K)] Thermal conductivity of the panel