Heat and Mass Transfer

Which of the following would lead to a reduction in thermal resistance?

  • A. In conduction, reduction in the thickness of the material and an increase in thermal conductivity.
  • B. In convection, stirring of the fluid and cleaning the heating surface.
  • C. In radiation, increasing the temperature and reducing the emissivity.
  • D. All of the above
Answer: Option D.
Explanation:

Following Steps are use to reduce the thermal resistance:
In conduction, reduction in the thickness of the material and an increase in thermal conductivity.
In convection, stirring of the fluid and cleaning the heating surface.
In radiation, increasing the temperature and reducing the emissivity.

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