Abstract:
ABSTRACT
Exergo-economic analysis is carried out using the data
given in Part I, for both LDO fired and PG fired HAG.
While carrying out the analysis in each case, three key
parameters influencing the cost of operation of the system
were identified, viz. capital cost, electricity cost, and fuel
cost. Each parameter is allowed to vary 50% beyond that
of its basic cost to study the sensitivity of the parameter
on operating cost. It is found that cost of fuel is affecting
the most in both the cases. Costs of generation of hot air
for both the cases are estimated for different mass flow
rates and the optimum cost of hot air generation in case of
LDO fired and PG fired HAG are found to be about ` 264
and ` 60 per hour respectively. As a result of study a
‘Thermo-economic De-rating factor’ is found to be of the
order of 40%, giving savings in operation cost up to 77%
