In a vertical tube single effect evaporator, the boiling film coefficient inside the tubes is $1350 \mathrm{~W} \mathrm{~m}^{-2} \mathrm{~K}^{-1}$. Steam condensation film coefficient outside is $7500 \mathrm{~W} \mathrm{~m}^{-2} \mathrm{~K}^{-1}$. Thermal conductivity of 20 tubes made of $\mathrm{SS} 304$ is $16 \mathrm{~W} \mathrm{~m}^{-1} \mathrm{~K}^{-1}$. The vertical tubes are $4.3 \mathrm{~m}$ long and are of $25 \mathrm{~mm} \mathrm{ID}$ and 27 mm OD. maintaining a steady $15^{\circ} \mathrm{C}$ temperature difference across the tube walls. Assume no boiling point rise, no heat losses, the feed enters the evaporator at the boiling point and the latent heat of vaporization of water is $2346.3 \mathrm{~kJ} \mathrm{~kg}^{-1}$. Total water evaporation rate from the evaporator bundle of tubes in kg $\mathrm{h}^{-1}$ will be_________
In a vertical tube single effect evaporator, the boiling film coefficient inside the tubes is $1350 \mathrm{~W} \mathrm{~m}^{-2} \mathrm{~K}^{-1}$. Steam condensation film coefficient outside is $7500 \mathrm{~W} \mathrm{~m}^{-2} \mathrm{~K}^{-1}$. Thermal conductivity of 20 tubes made of $\mathrm{SS} 304$ is $16 \mathrm{~W} \mathrm{~m}^{-1} \mathrm{~K}^{-1}$. The vertical tubes are $4.3 \mathrm{~m}$ long and are of $25 \mathrm{~mm} \mathrm{ID}$ and 27 mm OD. maintaining a steady $15^{\circ} \mathrm{C}$ temperature difference across the tube walls. Assume no boiling point rise, no heat losses, the feed enters the evaporator at the boiling point and the latent heat of vaporization of water is $2346.3 \mathrm{~kJ} \mathrm{~kg}^{-1}$. Total water evaporation rate from the evaporator bundle of tubes in kg $\mathrm{h}^{-1}$ will be_________