Question

Find out the heat transfer

Answer 1

$QUESTION:$

• Find out the heat transfer.

$ANSWER:$

• Calculating Heat Transfer by Conduction:

Start by entering the known variables into the fairly simple equation used to determine the rate of heat transfer, q, between two mediums by conduction: q = (kA(Thot–Tcold))/d. For example, if k = 50 watts/meter Celsius, A = 10 meters^2, Thot = 100 degrees Celsius, Tcold = 50 degrees Celsius, and d = 2 meters, then q = (50*10(100–50))/2.

Next subtract the two temperatures to work through that part of the equation and get the temperature difference. In this example, the calculation would be 100 degrees Celsius – 50 degrees Celsius = 50 degrees Celsius, resulting in the simplified equation q = (50*10(50))/2.

Multiply the thermal conductivity and the surface area. So now the simplified equation is q = (500*50)/2.

Multiply the product of the thermal conductivity and surface area you found in the previous step by the temperature difference to obtain q = 25,000/2.

Finally, divide the product calculated in the previous step by the thickness to obtain q = 12,500 W.