Tunnel Fan Comparison Spreadsheet 2014


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


  • Input:



    • House length

    • House witdh

    • open ceiling/dropped ceiling

    • Minimum desired tunnel fan capacity (typically between 9 and 11 cfm/ft2)

    • Electricity rate

    • 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 0.05" & 0.10")

    • Desired air speed




  • Outputs:



    • Air speed in the house

    • Number of each type of fan inputted required

    • Air flow ratio of fan inputted

    • Estimated air moving capacity of each tunnel fan at expected operating static pressure

    • Total air moving capacity of the tunnel fas at expected operating static pressure

    • Yearly power usage for each of the fans inputted

    • Theoretical windchill effect produced

    • Number of tunnel fans required are based of the expectant static pressure at the desired air speed 

      • 500 ft/min = 0.10"

      • 600 ft/min = 0.15"

      • Over 725 ft/min = 0.20.



    • 5 and 10 year operating costs



ATTACHMENTS

Details

Year Volume Number Categories
2014