Newton's law of cooling
" Newton's
law of convective heat transfer state that heat transfer by convection is
directly proportional to temperature difference.
"where
Q = convective
heat transfer (w)
h = heat
transfer coefficient
Δ T =
temperature difference (K)
Example
- Consider fluid at temperature Ta flowing over a flat plate kept at average temperature Ts
According to
Newton's law cooling where q = Q/A = heat flux (W/m2)
- The quantity ' h ' is called the
convection heat transfer coefficient.
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