60,000lb/h of petroleum fraction will be cooled from 250F to 150F using water with a range of 85F to 120F. For each stream, the inlet pressure will be 50 psia and a maximum pressure drop of 10 psi is specified. A fouling factor of 0.002hft2F/Btu is required for each stream. The petroleum fraction is not corrosive, and its properties may be assumed constant at the values given below, MOC: Admiralty brass (71%Cu,28%Zn,1%Sn,k=64Btw/hftF). Suitable design assumptions can be made to rate and design the Heat exchanger. [20 Marks]