Research Article
The Mechanical Impact of Aerodynamic Stall on Tunnel Ventilation Fans
Table 5
Capital cost and ten year though life cost of each selection strategy.
| | Fan diameter (m) | Fan efficiency | Fan investment cost (£) | Motor power (kW) | Electricity cost/year (£) | Electricity cost (10 yrs) (£) | Total fan and running costs (£) | Running cost as a percentage of total cost |
| | Strategy 1 | 2.5 | 71% | 28.500 | 185 | 32.412 | 217.488 | 245.988 | 88% | | Strategy 2 | 1.8 | 66% | 23.000 | 214 | 37.493 | 251.582 | 274.982 | 92% | | Strategy 3 | 2.24 | 69% | 32.000 | 190 | 33.288 | 223.366 | 255.366 | 87% |
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