Table 4: Factors impacting on fan capital and through life cost.

Design point pressure1.500 Pa
Pressure pulse500 Pa
Design point flow85 m3/s
Fan typeReversible, 300°C for 2 hours
Running hours per year4.400 (12 hours a day)
Cost of electricity0.04 £ per kW/Hour
Cost of capital8%
Period of assessment10 years