Question

The unit rate of heat transfer (Q) is ____________

(a) J/s

(b) J m^2 s^-1 K^-1

(c) m^2

(d) J

I have been asked this question during a job interview.

Query is from Large Capacity Fermenters in portion Fermentation System & Management of Fermentation Technology

Answer 1

Right answer is (a) J/s

Best explanation: The unit of the rate of heat transfer is Joules per second. It is also known as Watts. J m^2 s^-1 K^-1 is the unit of heat transfer coefficient and m^2 is the unit of area of the jacket.