Tunnel Fan Comparison Spreadsheet 2014 - Metric

Tunnel Fan Comparison Spreadsheet 2014 - Metric

  • This spreadsheet allows the user to compare different tunnel fans: the number required, air speed produced, and yearly electricity usage.

  • Input:

    • House length (m)
    • House width (m)
    • Open ceiling/dropped ceiling
    • Electricity rate
    • Minimum tunnel fan capacity (typically between 9 and 11 cfm/ft2)
    • Estimated tunnel fan operating hours
    • Air moving capacities of fans you want to compare (@ static pressure of 0.05" - 0.20")
    • Energy efficiency rating of fans you want to compare (@ static pressure of 0.10")
    • Desired tunnel velocity (ft/min)
    • Initial price of fan
  • Outputs:

    • Air speed in the house (m/sec and ft/min)
    • Number of each type of fan inputted required
    • Air moving capcity of each fan at expected static pressure (cfm/cmh)
    • Total air moving capacity (cfm/cmh)
    • Air flow ratio of fan inputted
    • Yearly power usage for each of the fans inputted
    • Theoretical windchill effect produced (F/C)
    • Number of tunnel fans required are based of the expectant static pressure at the desired air speed

       

      • 500 ft/min/2.5 m/sec = 0.10"
      • 600 ft/min/3 m/sec = 0.15"
      • Over 725 ft/min/3.63 m/sec = 0.20.
    • 5 and 10 year operating costs