Please help!! Calculate these please! PP$2)$ Solar collector $($Incropera ch$.12,$ Radiation: Processes and Properties $)$ Consider a solar collector of area A $=2\mathrm{.}4$ m$2.$ Solar irradiance is IS $=900$W$/$m$2,$ the surface emissivity and absorbtivity of the solar collector are $=0\mathrm{.}1$ and $=0\mathrm{.}95,$ respectively, and the surface temperature of the solar collector is Ts $=100$C$.$ The effective sky temperature is Tsky $=10$C and the sky emissivity is approximated as $=0\mathrm{.}1.$ The convective heat transfer coefficient at the surface is h $=2\mathrm{.}5$W$/($m$2$ K$)$ and the ambient air temperature is T $=15$C$.($a$)$ Calculate the net heat flux $($b$)$ Calculate efficiency $($c$)$ The net heat flux is used to heat water. Calculate the flow rate $($L$/$min$)$ of water when the inlet temperature is Ti $=15$C and the desired outlet temperature is To $=60$C$.$ Comment on the result.

Tips: Using heat collection to heat water a$)$ Create an energy balance for the system component by component: Incoming heat fluxes: Sun radiation Radiation from the sky Outgoing fluxes: Convection from the surface of the collector Radiation to heaven The sum of these is the heat flow that can be used to heat water b$)$ Efficiency is the ratio of usable heat flow to solar radiation c$)$ Water temperature q $=$mcp$($Tu $$ Ti$),$ from which the flow rate can be calculated. The correct answers are around a$)560$ W$/$m$2$ b$)60\%$ c$)0\mathrm{.}4$ L$/$min