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Mechanical Engineering · Q21

Heat And Mass Transfer

Engineering and GATE · Mechanical Engineering · question 21

Q21

The unit of overall coefficient of heat transfer is

A.
kcal/m2
B.
kcal/hr °C
C.
kcal/m2 hr °C
Answer
D.
kcal/m hr °C

Answer: Option C

Solution

Answer: Option C
Solution:
Kilocalorie per hour per square meter per degree Celsius (kcal/m2 hr °С) is a metric unit of the heat transfer coefficient. The heat transfer coefficient has SI units in watts per squared meter kelvin: . Heat transfer coefficient is the inverse of thermal insulance.
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