Q1. The purchased cost of a shell-and-tube heat exchanger (floating-head and carbon-steel tubes) with 6511 m2 of the heating surface was OMR 6511 in 2015.

(a) What will be the 2015 purchased cost of a similar heat exchanger with 23 m2 of the heating surface if the purchased cost capacity exponent is 0.65 for surface areas ranging from 10 to 50 m2?

(b) If the purchased cost capacity exponent for this type of exchanger is 0.83 for surface areas ranging from 50 to 200 m2 , what will be the purchased cost of a heat exchanger with 6511 m2 of heating surface in 2018? [15 Marks] Use suitable Marshall & Swift or Chemical engineering plant cost index data values with proper referencing.