Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
EXPERIMENTAL EVALUATION OF THE FLUID FLOW MANAGEMENT SYSTEM OF A MAGNETIC AIR CONDITIONER
Submission Author:
Diego dos Santos , SC
Co-Authors:
Diego dos Santos, Maria Claudia Régio e Silva, Gislaine Hoffmann, Anderson Lorenzoni, Guilherme Fidelis Peixer, Jaime Lozano, Jader Riso Barbosa Jr.
Presenter: Maria Claudia Régio e Silva
doi://10.26678/ABCM.COBEM2021.COB2021-1836
Abstract
Magnetic refrigeration stands out as one of the most promising emerging cooling technologies. It relies on the magnetocaloric effect - the thermal response some magnetic materials present upon a variation in the magnetic field applied over them. A magnetocaloric device is composed mainly of a magnetic circuit, an active magnetic regenerator, heat exchangers and a hydraulic system. A fundamental feature of such systems is the precision of the hydraulic system, especially regarding the fluid flow management system, given its high influence on the cooling capacity and performance. Additionally, this system has a large role in the overall performance of magnetic refrigerators since it represents one of the largest power consumption shares of the device. An approach previously defined to achieve a more efficient fluid flow management system for the magnetic refrigerators by using electronically controlled valves is applied. An experimental apparatus was applied to provide quantitative data on the operation of the valves, allowing a standardized validation to be made. The performance has been evaluated in terms of mass flow rates, operating frequencies and blow fractions. The experimental results show that solenoid valves were successfully applied as the fluid flow management system of a magnetic refrigeration system. Its performance is highly dependent on the operating conditions of the system, presenting better results as the mass flow rate and blow fraction rises, and as the frequency drops.
Keywords
Magnetocaloric refrigeration, fluid flow management system, Solenoid Valve, magnetocaloric air conditioner
