60,000 lb/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 50psia and a maximum pressure drop of 10 psi is specified. A fouling factor of 0.002h ft2F/Btu is required for each stream. The petroleum fraction is not corrosive, and its properties may be assumed constant at the values given below,

Property

Cp (Btu/lbm. F)

Petroleum Fraction

0.52

0.074

Water

K (Btu/h ft F)

1.0

2.75

0.37

0.72

Specific gravity

0.82

0.99

Prandtl Number

46.7

4.707

MOC Admiralty brass (71% Cu, 28% Zn, 1% Sn, k = 64 Btu/h ft F). Suitable design assumptions can be made to rate and design the Heat exchanger

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 50psia and a maximum pressure drop of 10psi is specified. A fouling factor of 0.002h.ft2F/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=64Btu/hftF). Suitable design assumptions can be made to rate and design the Heat exchanger. [20 Marks]