Green Energy

Biography

Biography: Irna Farikhah

Abstract

Handling thermal pollution due to the industrial waste heat is required to minimize the impact of the emitted thermal heat on the environment. There are some technologies that can be used to recovery the waste heat, one of which is thermoacoustic technology. In recent years, converting low-grade energy into valuable energy such as acoustic for driving cooler has become an applicable method to regain wasted thermal energy. The thermoacoustic engine can convert thermal into acoustic energy then the acoustic energy could be transferred for refrigeration. Thermoacoustic technology can be divided into two parts: one is thermoacoustic engine and cooler (Figure 1). To design the cooler system having high efficiency and lower onset heating temperature (Figure 2), the varied cooling temperature is numerically investigated from -15 to 15⁰C. The heating temperature generating acoustic power can be decreased from 256 to 205⁰C. Moreover, 6% of Thermodynamic upper limit value of the whole system is achieve and the efficiency of the engine, cooler and tube are 66%, 41% and 23%, respectively when the cooling temperature is -15^0c and the heating temperature is 256⁰C.