International Research Journal of Engineering and Technology (IRJET) Volume: 09 Issue: 06 | Jun 2022
www.irjet.net
e-ISSN: 2395-0056 p-ISSN: 2395-0072
Piezoelectric Thermo-Acoustic Refrigeration System with Peltier Module Energy Regeneration Alex Jayaprakash Thomas1, Ambady S2 Abhiram KK3, Merit Kurian4 Assi.Prof.Santhu Varghese Thomas5 1,2,3,4Btech
students,Department of Mechanical Engineering,Mangalam College of Engineering,Kottayam,Kerala,India 5Professor, Department of Mechanical Engineering, Mangalam College of Engineering, Kottayam, Kerala,India ---------------------------------------------------------------------***--------------------------------------------------------------------effects. " If warmth is supplied to the air for the time being of Abstract - Thermoacoustic refrigeration is a technology that
most compression or taken from it for the time being of most rarefaction (expansion), the vibration is promoted," he explains how acoustic oscillations are created. The thermoacoustic impact may be understood via way of means of following a given parcel of fluid because it actions via the stack or regenerator. Fig. 1 shows the (idealized) cycles a normal fluid parcel is going via because it oscillates along the plate.
operates without the use of any moving parts or hazardous refrigerants. Acoustic waves are used in this technology to transport heat across a temperature gradient. The acoustic input in this project is generated by a piezoelectric speaker. One of the safest types of refrigeration systems is thermoacoustic refrigeration. Furthermore, the potential of piezoelectric actuation as an effective means of driving thermoacoustic refrigerators is demonstrated in comparison to conventional electromagnetic loudspeakers, which are heavy and require a large amount of actuation energy. The theoretical and experimental tools developed can be used to design and test other piezoelectrically-driven thermoacoustic refrigerator configurations. The proposed model is based on the Peltier effect and employs the Peltier module, a thermoelectric device that converts electricity into temperature and vice versa. In our project, we're using it to generate electricity from waste heat. The primary goal of this paper is to provide a detailed overview of the configuration and operation of the refrigeration system using high intensity sound waves.
2.OBJECTIVE AND SCOPE The purpose of this study is a comprehensive study of thermoacoustic refrigerators with piezoelectric and Peltier modules. These thermoacoustic energy collector prototypes, as well as piezo-driven thermoacoustic refrigerators, are designed, modeled, built, and operated. This work also aims to show how to combine the developed mathematical model with the widely used DeltaEC thermoacoustic modeling software. Electromagnetic speakers power almost every thermoacoustic refrigerator on the market. These refrigerators, which provide engineers with excellent design tools, have many excellent numerical models. However, at high frequencies, the performance of the electromagnetic speaker will be significantly reduced. Piezoelectric drivers have thus been used in high frequency thermoacoustic cooling applications. Electromagnetic drivers may be required in applications that use magnetically sensitive devices. In contrast to their electromagnetically driven counterparts, there is no numerical model of a piezoelectrically driven thermoacoustic refrigerator. In this task, we will build a thermoacoustic refrigerator powered by piezoelectrics. The overall efficiency of thermoacoustic energy is determined by the efficiency of heat-to-acoustic and acoustic-to-electrical energy conversions. From this perspective, both approaches to improving the output power of a particular sound energy or transducer need to represent higher overall efficiency for improving the performance of different systems. Efforts to improve the acoustic performance of the stack are primarily related to stack optimization. Various stacking configurations such as materials, porosity, spacing, and parallel plates, pin arrays, circular pores, and changes in tube shape and aspect ratio.
Key Words: Thermo acoustic , Piezoelectric, Peltier module, Aluminium stack.
1. INTRODUCTION According to Rott, who built the majority of the theoretical framework for the topic, the term thermoacoustics has a fairly self-explanatory definition. As the name implies, thermoacoustics is concerned with the interaction of heat (thermo) and pressure oscillations in gases (acoustics). This field is divided into two subcategories. The first is the forward effect, which is concerned with the development of pressure oscillations caused by heat. This effect is widely used to create thermoacoustic engines, which are frequently mentioned in the literature. The second subcategory, or reverse effect, is the use of acoustic waves to pump heat. This reversal effect is commonly used in thermoacoustic refrigerators. However, on this study, we can give attention to thermoacoustic gadgets that leverage thermoacoustic standards to create beneficial refrigeration. Lord Rayleigh's landmark work "The Theory of Sound" posted in 1887 supplied the primary qualitative rationalization of acoustic
© 2022, IRJET
|
Impact Factor value: 7.529
|
ISO 9001:2008 Certified Journal
|
Page 922