Economics

Section 1
Dr.Hoda’s part
Sheet 1: Calculating equipment cost
Eng. Reda Zein
Section time
Sections
Place
8:30 - 10
1,4
33307
2 - 3:30
2,3
33129
Equipment Cost

 Why we need to calculate it?
 Equipment cost could be calculated using:
1- Chart
OR
2- Equation
OR
3- Table
Factors to be taken under consideration
in getting equipment cost

1- Size of equipment (e.g.: diameter, height, volume or area of
heat transfer).
2- Material of construction.
3- Operating conditions (e.g.: pressure).
Cost index

𝐼𝑛𝑑𝑒𝑥 𝑣𝑎𝑙𝑢𝑒 𝑎𝑡 𝑝𝑟𝑒𝑠𝑒𝑛𝑡 𝑡𝑖𝑚𝑒
 Present cost=Old cost x
𝐼𝑛𝑑𝑒𝑥 𝑣𝑎𝑙𝑢𝑒 𝑎𝑡 𝑜𝑙𝑑 𝑡𝑖𝑚𝑒
Old time is the time at which you calculated
the cost.
Let’s begin first sheet

1) Estimate
the
cost
of
the
following:
(a) Condenser ; fixed tube sheets, area 25.3
m2, carbon steel shell and tubes, operating
pressure 1 bar.
(Ans.=£ 3040)
(b) Cooler ; U tubes, area 10.1 m2, carbon
steel shell and tubes, operating pressure 5
bar.
(Ans.=£ 1785)
2) Estimate the cost of a storage tank having
the following specs ; fixed cone roof, capacity
35 m3, carbon steel.
n
Purchased cost= C S
𝐶2 =
𝑆2 0.6
𝐶1 ( )
𝑆1
(Ans. =£ 24220)
Note: There is a difference between storage tank and
process tank that in tables (Where the process tank
may have any operation say settling, mixing).
3) Estimate the cost of a recovery column,
date mid-1979 ; diameter 1 m, vessel overall
height 20 m, 35 sieve plates, vessel and plates
are stainless steel, operating pressure 1 bar.
(Ans.=£ 41000)
Note: The cost of a specialized equipment that can
not be found in literature, so it can usually be
estimated from the cost of components that make up
the equipment.
5) Estimate the
cost of the following
equipment, date mid-1979, absorption column
; diameter 1 m, vessel overall height 15 m,
packed height 12 m, packing 38 mm stainless
steel pall rings, vessel carbon steel, operating
pressure 5 bar.
(Ans.=£ 11000)
Any questions? 
