Question

_____________ consists of a single tube mounted inside another tube.

(a) Shell and tube Heat exchanger

(b) Plate heat exchanger

(c) Double tube heat exchanger

(d) Plate fin heat exchanger

I got this question in class test.

The doubt is from Heat Transfer Applications in section Heat Transfer Applications of Food Processing Unit Operations

Answer 1

Right option is (c) Double tube heat exchanger

The explanation: Double pipe heat exchanger contains of two concentric pipes of different diameters. One pipe is for cold fluid and the other one is for hot fluid.The fluid can flowin co-current direction or counter current direction.