Question

The SI unit of film heat transfer coefficient is __________

(a) W K/m^2

(b) Wm^2K

(c) (m^2K)/W

(d) W/ (m^2K)

The question was asked in class test.

My question is from Dimensions and Units topic in section Introduction & Unit Systems of Food Processing Unit Operations

Answer 1

Correct answer is (a) W K/m^2

Easiest explanation: The SI unit of film heat transfer coefficient isW K/m^2. The heat transfer through convection between a solid and a fluid is measured using heat transfer coefficient. It depends on 1) Hydrodynamic characteristics of its flow, 2)Hydrodynamic characteristics of its flow and 3) Hydrodynamic and thermal boundary conditions.