hfg Latent heat of vaporization of water(kJ/kg) hm Mass transfer coefficient of water vapor (kg/m2s) hw Water heat transfer coefficient (W/m2K) k Thermal conductivity (W/mK) L Length of collector (m) Lc Characteristic length of collector (m) Ls Starting length of boundary layer from leading edge (m) (cp)total Total thermal capacitance rate of air and water Mass flow rate (kg/s) Ratio of to N Number of tubes Nu Nusselt number NTU Number of transfer units P Perimeter of plenum cross section (m) Pitch Spacing of holes on absorber plate (m) por Plate porosity Pr Prandtl Number qback Convection to air at back wall of plenum per unit area(W/m2) qback,loss Back convection loss per unit area(W/m2) qconv,loss Front convection loss per unit area(W/m2) qedge Edge Loss per unit area of the collector(W/m2) qrad,loss Front radiation loss per unit area (W/m2) Heat transferred to suction air per unit area (W/m2) Useful energy transferred to water (W) Re Reynolds Number s Distance between tubes in absorber t Thickness (m)
hfg Latent heat of vaporization of water(kJ/kg) hm Mass transfer coefficient of water vapor (kg/m2s) hw Water heat transfer coefficient (W/m2K) k Thermal conductivity (W/mK) L Length of collector (m) Lc Characteristic length of collector (m) Ls Starting length of boundary layer from leading edge (m) (cp)total Total thermal capacitance rate of air and water Mass flow rate (kg/s) Ratio of to N Number of tubes Nu Nusselt number NTU Number of transfer units P Perimeter of plenum cross section (m) Pitch Spacing of holes on absorber plate (m) por Plate porosity Pr Prandtl Number qback Convection to air at back wall of plenum per unit area(W/m2) qback,loss Back convection loss per unit area(W/m2) qconv,loss Front convection loss per unit area(W/m2) qedge Edge Loss per unit area of the collector(W/m2) qrad,loss Front radiation loss per unit area (W/m2) Heat transferred to suction air per unit area (W/m2) Useful energy transferred to water (W) Re Reynolds Number s Distance between tubes in absorber t Thickness (m)
Final%20Draft-pacc.docx