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Matt, Engineer
Category: Engineering
Satisfied Customers: 21618
Experience:  Mechanical Engineering Hons degree, been working in automotive industry for the last 18 years - Engine development engineer
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How hot does a metal roof get.(thin corrugated galvanized)

Customer Question

How hot does a metal roof get.(thin corrugated galvanized) in northern Virginia?
And can I generate electricity from it using thermo generators?
Submitted: 1 year ago.
Category: Engineering
Expert:  Matt replied 1 year ago.


I'd estimate that a black painted roof will reach temperatures of about 50°C / 122F ?

it'd be best to take some measurement though to confirm this

and the thermo generators I've seen work best when the temperature difference ( hot side to cold side ) is at least 40°C so if you were to rig up some kind of cooling circuit on 1 side then this might be enough but then you have losses with running a pump to circulate the water etc

or use this firms product which incorporate a fan on the cold side

However to be honest I'd say you're better off with a water heater like this, as I don't think your thermal difference is going to be hot enough for it to pay for itself

rather than trying to make electricity from a thermo generator

Expert:  Matt replied 1 year ago.


do you still need help?

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