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Estimate heat transfer coefficient

  1. Mar 27, 2012 #1
    i prepared a setup wherein i heat a nichrome wire with 3 volts battery, measure its power, the temperature of the nichrome and the temperature of air.. by using the formula

    ΔT=PRsurf

    where

    ΔT=Tnichrome - Tair

    P=VI

    Rsurf=1/hA,

    R is, basically, the thermal resistance to heat from the copper surface to the surrounding air

    A is the area of nichrome wire...pi x D x length

    h is the heat transfer coefficient you are looking for and the only unknown...

    i calculated the heat transfer coefficient..

    .. i got that formula from a post somewhere here in PF..

    now tell me.. is my setup right to calculate the h.. or is something wrong with the formula?
     
  2. jcsd
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