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Heater/defroster heat strip

Discussion in 'The Hokey Ass Message Board' started by anteek49, Feb 22, 2014.

  1. anteek49
    Joined: Aug 7, 2013
    Posts: 223

    anteek49
    Member

    Was working on a clothes dryer this AM and noticed the nichrome wire was larger than in a car defroster. could a longer wire from a dryer be used to be a defroster/miniheater in a car? An alternator should keep up with a length of this on humid mornings here in the swamps of Florida. anyone try this? Love to loose those ugly heaterhoses.
     
  2. gimpyshotrods
    Joined: May 20, 2009
    Posts: 24,378

    gimpyshotrods
    ALLIANCE MEMBER

    P<sub>(W)</sub> = I<sub>(A)</sub>× V<sub>(V)</sub>


    If the dryer element is drawing 10 amps, at 220V, it's running 2200 watts.


    To produce 2200 watts with 14.4 volts, you need 152.78 amps, and that is just for the heating element.

    I guessed at the amp draw of 10. Depending on the actual draw, you can scale from there.
     
  3. stuart in mn
    Joined: Nov 22, 2007
    Posts: 2,655

    stuart in mn
    Member

    This is the problem in a nutshell. At 12 volts, it takes a LOT of amps to run electric heaters.
     
  4. BamaMav
    Joined: Jun 19, 2011
    Posts: 6,969

    BamaMav
    Member Emeritus
    from Berry, AL

    If you get it to work, your car will have that fresh dried clothes smell to it. :D






    Or maybe that fresh burnt up smell :eek::eek::eek:
     
  5. Rusty O'Toole
    Joined: Sep 17, 2006
    Posts: 9,756

    Rusty O'Toole
    Member

    The wire won't hardly get warm but it will kill your battery. There are 12 volt electric heaters but they are lame.

    There was some discussion on this before. Someone knew where they could get 12 volt heaters in 450 watt or 600 watt sizes and wondered which one was best.

    Here is how you find out. Look around your house and find the smallest electric heater you can find. It will probably be 750 watts. Put it in your car and plug it in. See how long it takes to heat up the car. Remember, when the car is moving it will be losing heat so it will only be half as effective.

    To run this size of little lame ass heater you will need to install an alternator twice as big as the one you have now. It will cost several hundred dollars.

    Or, you can use the FREE hot water that your engine produces ALL THE TIME for NOTHING.

    A typical V8 engine throws away enough waste heat to heat a 5 room house.
     
  6. gimpyshotrods
    Joined: May 20, 2009
    Posts: 24,378

    gimpyshotrods
    ALLIANCE MEMBER

    750 watts, at 120 volts is 6.25 amps.
    750 watts, at 14.4 volts is 52.08 amps.

    Remember, your alternator is not producing maximum output, save but at maximum rotor speed.

    A 750 watt heater would leave you stranded, long before you ever got warm.
     
  7. upspirate
    Joined: Apr 15, 2012
    Posts: 2,299

    upspirate
    Member

    Truck stops sell a small electric heater/defroster that plugs into a cig lighter.

    I bought one for an off topic car that was too difficult to change the core.

    I stayed just as cold with the electric heater as without (thought it would at least take the chill off,but....)

    I live in Fla also, so wasn't using in extreme cold,but I threw it out after the fail

    Run the hoses down low instead of across the top of the engine
     
  8. anteek49
    Joined: Aug 7, 2013
    Posts: 223

    anteek49
    Member

    Thanks,forgot that idea.
     
  9. Finding a practical way to use that could make a fella rich.
     
  10. hoop98
    Joined: Jan 23, 2013
    Posts: 1,362

    hoop98
    Member
    from Texas

    These are still around;

    [​IMG]
     
  11. stimpy
    Joined: Apr 16, 2006
    Posts: 3,546

    stimpy


    probably easier to find one from a VW ...
     
  12. stimpy
    Joined: Apr 16, 2006
    Posts: 3,546

    stimpy


    industry around here is starting to do it . as they run generators as the grid is so overloaded . so they try to use as much from the waste as possible .
     

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