Asugar solution is being evaporated in a triple-effect evaporator using saturated steam at 230 kpa. the pressure in the vapour space of the last effect is 32.7 kpa (abs). the overall heat transfer coefficients are u1 2.55, u2 2.2 and us 1.6 kw/m2k. the heat transfer areas are equal. the bpr in each effect are 0.66 c, 1.2 c and 2.1 respectively. no temperature adjustments are required to be made. 2.1. determine the boiling points in all three effects.