The purchased cost of a shell-and-tube heat exchanger (floating-head and carbon-steel tubes) with A m^2 of the heating surface was OMR B in 2015.

(a) What will be the 2015 purchased cost of a similar heat exchanger with C m^2 of the heating surface if the purchased cost capacity exponent is 0.65 for surface areas ranging from 10 to 50 m^2?

(b) If the purchased cost capacity exponent for this type of exchanger is 0.83 for surface areas ranging from 50 to 200 m^2 , what will be the purchased cost of a heat exchanger with A m2 of heating surface in 2018? [15 Marks] Use suitable Marshall & Swift or Chemical engineering plant cost index data values with proper referencing.

Where

A = 7728 m^2

B= 7728 OMR

C= 28 m^2