Design and Construction of Thermo acoustic Refrigerator for its optimum Performance and Its application in Machining Process

Abstract

Different types of coolant are used in machining process to reduce heat and friction between the tool and the work piece, to improve the surface finishing and to increase tool life. But long term exposure to these kinds of working fluids can present with some health hazards. To eliminate these types of coolant in the manufacturing process, a Thermo Acoustic Refrigerator (TAR) generated air coolant is developed. This technology uses high intensity acoustic waves in a pressurized gas tube to pump heat from one place to other to produce a refrigeration effect. In this study, an electromagnetic loudspeaker is used to generate the acoustic input inside an acoustically insulated tube filled with inert gases inside and with little or almost no moving parts which making the system highly efficient. Cooling effect produced by TAR will be applied in machining process as coolant. The result shows a promising window of application for thermo acoustic refrigerator coolant in machining process.