1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

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

    User Avatar
    Science Advisor
    Homework Helper

    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

    User Avatar
    Science Advisor
    Homework Helper

    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

    User Avatar
    Gold Member

    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

    User Avatar
    Science Advisor
    Homework Helper

    $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

    User Avatar
    Gold Member

    Hey!
    What about stimulating the economy.:biggrin:
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Heat creating Exercise Bike
  1. Forces on a Bike (Replies: 8)

  2. Bike on a hill (Replies: 1)

  3. Bike Vectors (Replies: 7)

  4. Bike projection (Replies: 5)

Loading...