Question

___________ results from a chemical reaction involving the heat exchanger surface material.

(a) Biological Fouling

(b) Chemical Fouling

(c) Corrosion Fouling

(d) Freezing Fouling

The question was asked by my college professor while I was bunking the class.

My question is taken from Heat Transfer Applications topic in section Heat Transfer Applications of Food Processing Unit Operations

Answer 1

Right choice is (c) Corrosion Fouling

For explanation I would say: Corrosion fouling results from a chemical reaction involving the heat exchanger surface material.Biological Fouling is due to the microorganisms present on heat transfer surfaces. Chemical fouling results from chemical reactions of fluid that causes deposition of material on the surface of the heat exchanger. Freezing fouling is seen when one of the component in hot fluid  is cooled to near freezing point.