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. Uo 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,cp=4,180J/kgC,k=0.66W/mC c) If you instead doubled the area of the exchanger by doubling the number of tubes in a 1shell pass, 1-tube pass exchanger, that is, the same flow rate would be divided into twice as many tubes. Would you expect U0, to increase, decrease, stay the same, or would it be impossible to determine? Why? (Assume h0 stays the same)