(Solved): heat urgent The defroster of an automobile functions by discharging warm air on the inner surface o ...

The defroster of an automobile functions by discharging warm air on the inner surface of the windshield. To prevent condensation of water vapor on the surface, the temperature of the air and the surface convection coefficient (T?i, hi) must be large enough to maintain a surface temperature Tsi that is at least high as the dew point (Tsi $$?$$ Tdp). Consider a windshield of length $$\mathrm{L}=0.8\mathrm{m}$$ and thickness $$\mathrm{t}=0.006\mathrm{m}$$ and driving conditions for which the vehicle moves at a velocity of $$\mathrm{V}=$$ $$100\mathrm{km}/\mathrm{h}$$ in ambient air at $$0^{?}\mathrm{C}$$. Air properties may be approximated as: $$0.023\mathrm{W}/\mathrm{m}?\mathrm{K}$$, viscosity $$=1.69\mathrm{E}?05\mathrm{m}?2/\mathrm{s},\mathrm{Pr}=0.71$$. The glass conductivity is $$1.4\mathrm{W}/\mathrm{m}/\mathrm{K}$$. If the dew point temperature is $$10^{?}\mathrm{C}$$ and $$\mathrm{Tool}=50^{?}\mathrm{C}$$, 1. Determine the critical distance $$Xc$$ 2. Determine the value of Reynolds number, Re 3. Determine the value of Nusselt Number, Nu, 4. Determine the convection coefficient at the interior of the car, hi. 5. Determine the hot air velocity required to prevent condensation on the inner surface, assuming laminar Flow.