Question

1. A feed of 4535 kg/h of a 2.0 wt % salt solution at 311 K enters continuously a horizontal-tube natural circulation single-effect evaporator and is being concentrated to 3.0%. The evaporation is at atmospheric pressure. Saturated steam at 383.3 K is supplied for heating. Since, the solution is dilute, it can be assumed to have the same boiling point as water. The heat capacity of the feed can be taken as $C_p = 4.10 ext{ kJ kg}^{-1} ext{K}^{-1}$. Calculate steam used, steam economy in kg vaporized/kg steam used, and heating surface area in m$^2$

          1. A feed of 4535 kg/h of a 2.0 wt % salt solution at 311 K enters continuously a horizontal-tube natural circulation single-effect evaporator and is being concentrated to 3.0%. The evaporation is at atmospheric pressure. Saturated steam at 383.3 K is supplied for heating. Since, the solution is dilute, it can be assumed to have the same boiling point as water. The heat capacity of the feed can be taken as $C_p = 4.10 	ext{ kJ kg}^{-1} 	ext{K}^{-1}$. Calculate steam used, steam economy in kg vaporized/kg steam used, and heating surface area in m$^2$

$1. A feed of 4535 kg/h of a 2.0 wt % salt solution at 311 K enters continuously a horizontal-tube natural circulation single-effect evaporator and is being concentrated to 3.0%. The evaporation is at atmospheric pressure. Saturated steam at 383.3 K is supplied for heating. Since, the solution is dilute, it can be assumed to have the same boiling point as water. The heat capacity of the feed can be taken as $Cp = 4.10 ext{ kJ kg}^{-1} ext{K}^{-1}$. Calculate steam used, steam economy in kg vaporized/kg steam used, and heating surface area in m$^2$$

Added by Susan C.

Question

Please give Ace some feedback