You also need a big enough battery to get through slow hours.

So you can get the Zero-emissions Off-the-grid gym!

  • I_Miss_Daniel@lemmy.world
    link
    fedilink
    English
    arrow-up
    48
    arrow-down
    1
    ·
    20 hours ago

    Might be difficult.

    Bicycle riders make 30-70 watts from memory. That’ll run a few LED lights, but if you want the fridge you need five cyclists, and for the aircon about 30 to 50 I think.

    • socsa@piefed.social
      link
      fedilink
      English
      arrow-up
      1
      ·
      7 hours ago

      A brand new rider makes around 50w off the couch. 100-200w functional threshold power is normal for someone who rides casually but regularly. Pro racers are doing like 5 w/kg so around 300w for a smallish person.

    • SpaceNoodle@lemmy.world
      link
      fedilink
      arrow-up
      84
      ·
      19 hours ago

      If they generate that much just from their memories, imagine how much they must generate when they pedal the bikes!

    • Rivalarrival@lemmy.today
      link
      fedilink
      English
      arrow-up
      8
      ·
      14 hours ago

      but if you want the fridge you need five cyclists

      Your numbers suggest the fridge uses 5 * (30 to 70), or 150 to 350 watts. Which are reasonable numbers when the compressor is running.

      But, the duty cycle of a fridge is typically less than 30%. It only draws a couple watts with the compressor off and the door closed.

      In a long enough “race”, two cyclists should be able to drive the electric meter backward faster than the fridge drives it forward.

    • Creat@discuss.tchncs.de
      link
      fedilink
      arrow-up
      8
      arrow-down
      1
      ·
      edit-2
      14 hours ago

      70 W is very casual riding, like 15 km/h or so. Anyone actually training (20-25 km/h or simulating anything with hills) will be more in the 100-150 W range. My fridge uses 70 W as an example, and only when actively running, with a duty cycle of 40% or so. Obviously this isn’t an industrial fridge or freezer.