Engineering Board Exam Reviewer · Engineering Materials · medium
Heat flows through a 100 mm thick polystyrene insulation panel (k = 0.05 W/m· K) of area 10 m2 with a temperature difference of 30 °C. What is the heat flow?
- 1500 W
- 15.0 W
- 150 W
- 15 W
Answer
C. 150 W
Solution
q = kA T/L = 0.05(10)(30)/0.1 = 150 W.
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