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B Cotton Insulation vs Glad Wrap Bag for solar water heater?

  1. Mar 18, 2016 #1
    Hello Physics Forum. I have to complete a solar water heater project for school and choosing between what would be better for the insulation of a tin reservoir. I'm leaning towards the glad wrap bag because it will let more light hit our reservoir. However it will be a quite windy day and cotton might better suited for this type of conditions.
  2. jcsd
  3. Mar 19, 2016 #2


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    Can you think of an experiment that you could try, to decide which is best?
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