Research Article
The Mechanical Impact of Aerodynamic Stall on Tunnel Ventilation Fans
Table 4
Factors impacting on fan capital and through life cost.
| Design point pressure | 1.500 Pa | Pressure pulse | 500 Pa | Design point flow | 85 m3/s | Fan type | Reversible, 300°C for 2 hours | Running hours per year | 4.400 (12 hours a day) | Cost of electricity | 0.04 £ per kW/Hour | Cost of capital | 8% | Period of assessment | 10 years |
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