# CFD-Simulink Modeling of the Inflatable Solar Dryer for Drying Paddy Rice
## 5 Conclusions
\begin{tabular}{l l} \(K_{abs\_asp}\) & Thermal conductance from the absorber to the asphalt, kJ m\({}^{-2}\) s\({}^{-1}\) \\ \(K_{pad\_abs}\) & Thermal conductance from the paddy rice to the absorber, kJ m\({}^{-2}\) s\({}^{-1}\) \\ \(K_{asp\_soil}\) & Thermal conductance from the asphalt to soil, kJ m\({}^{-2}\) s\({}^{-1}\) \\ \(k\) & Drying constant h\({}^{-1}\) \\ \(L_{c}\) & Characteristic length of the geometry, m \\ \(L_{pad}\) & Latent heat of paddy rice, kJ kg\({}^{-1}\) \\ \(M\) & Moisture content d.b. \\ \(Me\) & Equilibrium moisture content d.b. \\ \(Nu\) & Nusselt number \\ \(Pr\) & Prandtl number \\ \(p\) & Static pressure, Pa \\ \(p_{atm}\) & Atmospheric pressure, Pa \\ \(p_{s}\) & Saturation vapor pressure, Pa \\ \(Re\) & Reynolds number \\ \(S_{m}\) & Momentum source term, Pa m\({}^{-1}\) \\ \(t\) & Time, h \\ \(t_{f}\) & Final drying time, h \\ \(T_{cov}\) & Temperature of the cover, \({}^{\circ}\)C \\ \(T_{abs}\) & Temperature of the absorber, \({}^{\circ}\)C \\ \(T_{pad}\) & Temperature of the paddy rice, \({}^{\circ}\)C \\ \(T_{air}\) & Temperature of the drying air, \({}^{\circ}\)C \\ \(T_{sky}\) & Temperature of the sky, \({}^{\circ}\)C \\ \(T_{amb}\) & Ambient temperature, \({}^{\circ}\)C \\ \(T_{sep}\) & Temperature of the asphalt, \({}^{\circ}\)C \\ \(T_{dp}\) & Dew point temperature, \({}^{\circ}\)C \\ \(v_{air}\) & Air velocity, m s\({}^{-1}\) \\ \(\overset{\circ}{v}\) & Velocity vector, m s\({}^{-1}\) \\ \(\Delta x\) & Finite distance, m \\ Greek letters \\ \(\alpha_{cov}\) & Absorptance of the cover \\ \(\alpha_{abs}\) & Absorptance of the absorber \\ \(\alpha_{pad}\) & Absorptance of the paddy rice \\ \(\epsilon_{cov}\) & Emittance of the cover \\ \(\epsilon_{pad}\) & Emittance of the paddy rice \\ \(\epsilon_{abs}\) & Emittance of the absorber \\ \(\tau_{cov}\) & Transmittance of the cover \\ \(\epsilon\) & Porosity of paddy rice \\ \(\rho_{air}\) & Density of air, kg m\({}^{-3}\) \\ \(\rho_{abs}\) & Density of absorber, kg m\({}^{-3}\) \\ \(\rho_{pad}\) & Density of paddy rice, kg m\({}^{-3}\) \\ \(\rho_{asp}\) & Density of asphalt, kg m\({}^{-3}\) \\ \(\rho_{sci}\) & Density of soil, kg m\({}^{-3}\) \\ \(\rho\) & Reflectance \\ \(\lambda_{air}\) & Thermal conductivity of air, W m\({}^{-1}\) K\({}^{-1}\) \\ \(\lambda_{abs}\) & Thermal conductivity of absorber, W m\({}^{-1}\) K\({}^{-1}\) \\ \(\lambda_{pad}\) & Thermal conductivity of paddy rice, W m\({}^{-1}\) K\({}^{-1}\) \\ \(\lambda_{asp}\) & Thermal conductivity of asphalt, W m\({}^{-1}\) K\({}^{-1}\) \\ \(\lambda_{sci}\) & Thermal conductivity of soil, W m\({}^{-1}\) K\({}^{-1}\) \\ \(\sigma\) & Stefan-Boltzmann constant, W m\({}^{-2}\) K\({}^{-4}\) \\ \(\overset{\leftarrow}{\tau}\) & Reynolds stress tensor, Pa \\ \(\theta\) & Zenith angle \\ \(\upsilon\) & Kinematic viscosity, m\({}^{2}\) s\({}^{-1}\) \\ \(\varphi\) & Relative humidity, \% \\ \(\mu_{air}\) & Dynamic viscosity of air, kg m\({}^{-1}\) s\({}^{-1}\) \\ \(\delta_{air}\) & Thickness of air, m \\ \(\delta_{abs}\) & Thickness of paddy absorber, m \\ \(\delta_{pad}\) & Thickness of paddy rice, m \\ \(\delta_{apr}\) & Thickness of asphalt, m \\ \(\delta_{syi}\) & Thickness of soil, m \\ \end{tabular}