Project ForgePlant Design & Economics
Cost Estimation
GATE 2018
Medium
In 2005, a shell-and-tube HX with 68m² area cost Rs.12.6 Lakh. Cost index in 2005 was 509.4, now 575.4. Using a capacity-scaling index of 0.6, the present cost (Lakh Rs) of a similar HX with 100m² area is
- 17.94
- B19.94
- C20.94
- D22.94
Explanation
Cost_new=12.6×(100/68)^0.6×(575.4/509.4)=12.6×1.2605×1.1296=17.94 Lakh.
Source: GATE CH 2018 (2018)
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