Heating system on showers
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Group 4 project on showers at RCNUWC

Group 4 project on showers at RCNUWC

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Heating system on showers Presentation Transcript

  • 1. Heating system on Showers
    Red Cross Nordic UWC
  • 2. How long do we shower?
    And...what about you?
  • 3. Methodology
    • Data from 10 people taken for the shower time
    • 4. Two different temperatures of water taken (warm and quite warm water)
    • 5. Use of formula:
    H= ms∆T
    where: m=mass; s= specific heat capacity of water ∆T= Change in temperature
  • 6. Process
    • Raw data:
    • 7. Temperature:
    • 8. Average final temperature: 38.7 ºC
    • 9. Volume of water: 350 ml
    • 10. Time taken : 4 seconds
    • 11. Video
  • Calculation
    • Mass of water:
    m=dV
    where: m=mass/d=density/V=volume
    m=1x350=350g= 0.35kg
    • Change in temperature:
    ∆T= T2 – T1
    =38.7- 2.6= 36.1 ºC
    • Specific heat capacity of water: 4180 Jkg-1ºC-1
    H= ms∆T
    = 0.35x4180x36.1= 52814.3
  • 12.
    • Calculation for 16.5 minutes shower:
    H= ms∆T
    =52814/4 x 60x16.5
    =13071539.25 J
    • Energy:
    E= 13071539.25/3600000
    = 3.63 Kwh
    • For all students:
    E1= 3.63x200
    =726Kwh
  • 13. Now If we shower for 10 minutes...
    • Mass of water:
    m=dV
    where: m=mass/d=density/V=volume
    m=1x350=350g= 0.35kg
    • Change in temperature:
    ∆T= T2 – T1
    =38.7- 2.6= 36.1 ºC
    • Specific heat capacity of water: 4180 Jkg-1ºC-1
    H= ms∆T
    = 0.35x4180x36.1= 52814.3
  • 14.
    • Calculation for 10 minutes shower:
    H = ms∆T
    = 52814.3/4 x10x60
    = 7922145 J
    • Energy:
    E= 7922145/3600000
    = 2.20Kwh
    • For all students:
    E2= 2.20x200
    =440.12KwH
  • 15. Energy Saved
    Es= E1 – E2
    = 726-440.12
    =285.88Kwh
  • 16. Suggestion
    • We are not imposing our thoughts but we would like to suggest that shower for 10 minutes would be reasonable and more importantly it would save 285.88 kwh of energy.
    • 17. THAT Can light up 4765 LIGHT BULBS!
    • 18. Possibility to use Patented Shower Timer : A device which allows full flow for determined time (5-11 mins) and cut the flow by 2/3 when time ends. Timer will restart after 5 mins.
  • Proposed Model
    Water goes out
    Filter
    Waste water goes into the pipes
    Pipes
    Room
    Bathroom
  • 19.
    • This model can be used because the water after a shower still is warm enough:
    • 20. Average final temperature:
    At= (F1+ F2)/2
    =33.8 ºC