Chapter 14, Problem 90A

Interpretation Introduction

Interpretation − To explain how a vacuum can prevent heat transfer.

Introduction-

Heat transfer can take place in three ways:

1. Conduction is when heat is transferred from a hotter body to a colder body without any movement of particles.
2. Convection: Heat transfer takes place from high temperature to low temperature by the movement of particles
3. Radiation: Heat transfer takes place through electromagnetic waves.

Explanation of Solution

When the vacuum is created between the walls of the tank, there is no medium present for the traveling of particles. Hence, the vacuum prevents heat transfer by convection.