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Heat Transfer - Engineering

Q1:

In SI units, fouling factor is expressed in

A m2°K/W

B W/m2°K

C m2°K

D m°K/W

ANS:A - m2°K/W

In SI units, the fouling factor is expressed in m2°C/W (square meters per degree Celsius per watt). Explanation:

  • The fouling factor represents the thermal resistance caused by fouling or deposits on heat transfer surfaces.
  • It indicates the additional thermal resistance encountered by heat transfer due to the presence of fouling materials.
  • The fouling factor is defined as the temperature difference across the fouled surface divided by the heat flux.
  • The units of the fouling factor are typically square meters per degree Celsius per watt (m2°C/W), which represent the thermal resistance per unit area.
  • This unit indicates the additional temperature difference (in degrees Celsius) per unit area (in square meters) per unit heat flux (in watts).