A double-effect evaporator is used to concentrate a solution. Steam is sent to the first effect at $110\:^{\circ} C$ and the boiling point of the solution in the second effect is $63.3\: ^\circ C$. The overall heat transfer coefficient in the first effect and second effect are $2000 \: W \: m^{-2} \: K^{-1}$ and $1500 \: W \: m^{-2} K^{-1}$, respectively. The heat required to raise the temperature of the feed to the boiling point can be neglected. The heat flux in the two evaporators can be assumed to be equal.
The temperature at which the solution boils in the first effect is _________$^\circ C$ (round off to nearest integer)