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Recent content by sicus

  1. sicus

    Heat loss from an insulated cylinder

    The formula for the heat transfer coefficient for a single layer is 1/U=x/k+1/hi+1/ho My question is, how is this equation modified for the same single layer, with an added layer of insulation, ho will change in value, but is there just another x/k added in for the second layer? Also is it...
  2. sicus

    Really simple..just units for a total rate of heat transfer

    Thanks lol, someone else i asked reminded me what a Watt is too =P
  3. sicus

    Really simple..just units for a total rate of heat transfer

    The formula Q=U*A*(Tf-Ti) gives the total rate of heat transfer. Q may be replaced with phi in some formulas The units for U(heat transfer coefficient) are W/(m^2K) and Tf/Ti are K and for A they are m^2 crossing the units gives the units of Q to be Watts(W) Why is it a rate of heat...
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