Fans

harveybaronharveybaron Registered Users Posts: 1
Does anyone know of a fan that is certified for 250cfm at less than 10 amps?

Comments

  • BB.BB. Super Moderators Posts: 26,769 admin
    What is the usage? Computer ac and dc fans use much less power but do not move much air if there is any back pressure (such as blowing through an air filter).

    -Bill
    Near San Francisco California: 3.5kWatt Grid Tied Solar power system+small backup genset
  • jonrjonr Solar Expert Posts: 846 ✭✭✭✭
    In almost all cases, efficiency goes up with size.  Ie, large, slow moving blades.
  • PhotowhitPhotowhit Solar Expert Posts: 4,203 ✭✭✭✭
    Does anyone know of a fan that is certified for 250cfm at less than 10 amps?

    10 amps... AC or DC?

    Do you have a size you would like? I think the 10"O2cool would be in that neighborhood, if it's true that the Endless Breeze is 900 cfm. It draws 7-8 amps at 12 volts... I've never seen a cfm on the 02cool, but keep hearing 900 cfm for the endless breeze. Might be worth looking into.


    I've been pretty happy with my O2cool fans, have 2 running now.
    Home system 4000 watt (Evergreen) array standing, with 2 Midnite Classic Lites,  Midnite E-panel, Prosine 1800 and Exeltech 1100, ForkLift battery. Off grid for @13 of last 14 years. 1000 watts being added to current CC, @2700 watts to be added with an additional CC.
  • WaterWheelWaterWheel Registered Users Posts: 224 ✭✭✭

    Conext XW6848 with PDP, SCP, 80/600 controller, and conext battery monitor

    18 SW280 panels on Schletter ground mount

    48v 790 amp/hr Crown battery bank

  • dmariondmarion Registered Users, Users Awaiting Email Confirmation Posts: 1
    edited July 11 #7
    I just got a aims 4000 inverter however the fan is constantly running and will not shut off at all does anyone know why or how to stop it from running non stop appreciate any help at all.
  • littleharbor2littleharbor2 Solar Expert Posts: 649 ✭✭✭✭
    Cheap inverters leave a lot to be desired.

    2.1 Kw Suntech 175 mono, Classic 200, Trace SW 4024 ( 15 years old  but brand new out of sealed factory box Jan. 2015), Bogart Tri-metric, 700 ah @24 volt AGM battery bank. Plenty of Baja Sea of Cortez sunshine.

  • PhotowhitPhotowhit Solar Expert Posts: 4,203 ✭✭✭✭
    edited July 11 #9
    dmarion said:
    I just got a aims 4000 inverter however the fan is constantly running and will not shut off at all does anyone know why or how to stop it from running non stop appreciate any help at all.
    Is there a load on it?  Is it for a 12 volt battery bank? Is it in a warm area?

    Inverters for a 12 volt battery bank work harder than ones for high voltage battery bank. Also, as Littleharbor2 said, cheap inverters cut corners, it will have to have a fan, but smaller cooling area and smaller cases can be done, if it runs the fan more often.

    Home system 4000 watt (Evergreen) array standing, with 2 Midnite Classic Lites,  Midnite E-panel, Prosine 1800 and Exeltech 1100, ForkLift battery. Off grid for @13 of last 14 years. 1000 watts being added to current CC, @2700 watts to be added with an additional CC.
  • mcgivormcgivor Registered Users Posts: 1,214 ✭✭✭✭
    What does the manual say regarding fan operation, some are load dependant, some by temperature, others run at low speed constantly switching to higher speed under a certain load and the really cheap ones run full speed all the time.
    Good not cheap, cheap not good.......as the saying goes.
      1500W, 6× Schutten 250W Poly panels , Schneider 150 60 CC, Schneider SW 2524 inverter, 8×T105 GC 24V nominal 

  • littleharbor2littleharbor2 Solar Expert Posts: 649 ✭✭✭✭
    mcgivor said:
    What does the manual say regarding fan operation, some are load dependant, some by temperature, others run at low speed constantly switching to higher speed under a certain load and the really cheap ones run full speed all the time.
    Good not cheap, cheap not good.......as the saying goes.

    Full time fans would likely have a high, idle current draw. Not recommended to keep on continuously as it will drain your batteries.

    2.1 Kw Suntech 175 mono, Classic 200, Trace SW 4024 ( 15 years old  but brand new out of sealed factory box Jan. 2015), Bogart Tri-metric, 700 ah @24 volt AGM battery bank. Plenty of Baja Sea of Cortez sunshine.

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