Recent content by Brownstone

  1. B

    Calculating thickness of insulation, rate of T rise and fall

    "After this, I thought that I should've instead taken 80% instead of 20%, since I think I'm accounting for heat, so I tried that. Those calculations gave me ΔT = 6425.7, t = 1.39063, leading, again, to a rate of 4620.71 (that I should've seen)." I'd already tried that. :H
  2. B

    Calculating thickness of insulation, rate of T rise and fall

    So I should've used the 80% instead of the 20%?
  3. B

    Calculating thickness of insulation, rate of T rise and fall

    Homework Statement A.[/B] Someone is walking outside when the temperature of the air is -10°C. The metabolic rate of walking is 140 Cal/m2hr, and the usual muscle efficiency (20%) applies. They are completely covered by clothing with a coefficient of thermal conductivity of 0.36 Cal-cm/m2hr...