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Homework Help: Heat creating Exercise Bike

  1. Dec 7, 2008 #1
    Hi all,

    I was wondering if there was such thing as a heat creating exercise bike. Made for the purpose of creating heat.

    It's really cold and the power bill is going up and I am wondering if this idea is stupid or has it already been tried. I would buy one.

    Any thoughts?
     
  2. jcsd
  3. Dec 7, 2008 #2

    mgb_phys

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    If you are a racing cyclist you can probably put out about 1/3 hp for an hour - or approx 0.2kwh. That much electricity would cost you about 2c but it would take about a big-mac worth of calories.
     
  4. Dec 7, 2008 #3
    So you are saying that even if I were a racing cyclist (which I am not), not much energy could be produced? Not enough to heat even a small room?

    I'm not sure if you were saying that 2c is "2 cents".
     
  5. Dec 7, 2008 #4

    mgb_phys

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    Electricity costs around 10cents / kWh - that is 1kW of power for an hour.
    1KW is a single bar electric fire or a small fan heater.
    Unfortunately you can only generate around 1/5 of a kW.
     
  6. Dec 7, 2008 #5

    RonL

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    Why not build it like a heat pump and amplify the energy of 200 watts into the equivilant of 800 or more ?:smile:

    Ron
     
  7. Dec 7, 2008 #6

    mgb_phys

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    $1000 racing bike
    $200 trainer
    $100 cycling shoes
    $50 silly little cycling shorts
    $10k heat pump + digging up nearby 100m^2 of land to install pipes
    Generates 1KW
    or:
    1KW Fan heater $10
    1Kw hour electric 10 cents

    ps -- Of course if you cycle enough to generate a reasonable amount of heat you will have the sort of bulging muscles to become irresistible to evo - then staying warm will not be a problem.
     
    Last edited: Dec 7, 2008
  8. Dec 7, 2008 #7
    lol, I was waiting for the "Priceless" to come in at the end of mgb_phys's post. =)

    Sounds like one of those commercials.

    Ken
     
  9. Dec 7, 2008 #8

    RonL

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    Hey!
    What about stimulating the economy.:biggrin:
     
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