Heat flow Definition and 104 Threads

  1. W

    Calculating Heat Flow Through a Rod: Step-by-Step Guide

    Hi, I have to find the rate of heat flow through a cross-section of the rod in steady state as shown in the figure.Thermal conductivity of the rod is K. I have used a $(dollar) sign for theta. The formula i know is ΔQ/Δt = [KA($2 - $1)] /x where ΔQ/Δt is the heat current,where A is area of...
  2. K

    Help With Heat Flow Questions: Find Temperature Equilibrium & Flow Lines

    I got 2 questions and I have no idea what they are asking so hopefully someone can help me out here. 1. Find the temperature equilibrium lines and flow lines for : Its just a graph of a circle in the complex plane of radius 1. The 4 points on the axes are labeled and it says 0 degress...
  3. Q

    What is the ratio of heat flow through Window A to Window B?

    Hello ALL, I am really having a hard time with this question, any effort will be greatly appreciated! Window A is a pane of glass 4 mm thick, as shown above. Window B is a sandwich consisting of two extremely thin layers of glass separated by an air gap 2 mm thick. If the thermal...
  4. S

    Heat Flow Rate through Thin Metallic Plates: Air vs. Vacuum

    Two parallel thin metallic plates with a gap between them are used as a heat insulator. How does the heat flow rate through this device depend on the temperatures on its two sides in the following two cases? Case 1: The gap is filled with air. Case 2: There is a vacuum in the gap.
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