Cotton Insulation vs Glad Wrap Bag for solar water heater?

AI Thread Summary
For a solar water heater project, the choice between cotton insulation and a glad wrap bag is debated. The glad wrap bag allows more light to reach the reservoir, potentially enhancing heating efficiency. However, cotton may provide better stability in windy conditions. An experiment is suggested to compare the effectiveness of both materials under varying conditions. The discussion emphasizes the importance of insulation material in optimizing solar water heater performance.
lasisdabomb
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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.
 
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lasisdabomb said:
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.
Can you think of an experiment that you could try, to decide which is best?
 

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