Problem 2: ( 60 points) 20kg/s of ethylene glycol at 10C is used to cool water at 80C down to 45C in a shell-andtube heat exchanger ( 1 shell pass, 1 tube pass), so that 15kg/s of water can be discharged to the environment safely. U0 is estimated to be 800W/m2C. The water flows in the tubes. You may assume the properties for the fluids stay constant with the following values: Ethylene Glycol: =1110kg/m3,=0.015kg/ms,cp=2,400J/kgC,k=0.25W/mC Water: =980kg/m3,=4.3104kg/ms,c=4,180J/kgC,k=0.66W/mC b) If the exchanger is replaced with a new exchanger ( 1 shell passes, 2 tube passes) with the same length (so that the heat transfer area will double), same inlet temperatures, and assuming the same Uo, what would be the new outlet temperature for each stream? (30 points) (Box both answers)