In the commercial production of sugar (sucrose), the product crystals are washed and centrifugedto partial dryness. the crystals are then sent through a rotary dryer where they are contacted with ahot stream of air that reduces the moisture content from 1: 0wt%to 0: 1wt%. the ratio of wet sugarto inlet air fed to the dryer is 3.3 kg wet sugar/kg inlet air. the inlet air contains 1.5 mole% water.

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.