Literature Review on Study of Looped Travelling Wave in Thermo Acoustic Refrigerator

Abstract

Thermo acoustic have been known for over years but the use of this phenomenon to develop engines and
pumps is fairly recent. Thermo acoustic refrigeration is one such phenomenon that uses high intensity sound waves
in a pressurized gas tube to pump heat from one place to other to produce refrigeration effect. In this type of
refrigeration all sorts of conventional refrigerants are eliminated and sound waves take their place. All we need is a
loud speaker and an acoustically insulated tube. Also this system completely eliminates the need for lubricants and
results in 40% less energy consumption. Thermo acoustic heat engines have the advantage of operating with inert
gases and with little or no moving parts, making them highly efficient ideal candidate for environmentally-safe
refrigeration with almost zero maintenance cost. Now we will look into a thermo acoustic refrigerator, its principle
and functions