Eventos Anais de eventos
ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
DESIGN AND EXPERIMENTAL VALIDATION OF A FLUID FLOW MANAGEMENT SYSTEM BASED ON SOLENOID VALVES FOR A LARGE MAGNETIC REFRIGERATOR
Submission Author:
Diego dos Santos , SC
Co-Authors:
Diego dos Santos, Sergio Luiz Dutra, Guilherme Fidelis Peixer, Jaime Lozano, Jader Riso Barbosa Jr., Gabriel Martins do Rosario, Maria Claudia Régio e Silva, Anderson Lorenzoni
Presenter: Diego dos Santos
doi://10.26678/ABCM.ENCIT2020.CIT20-0666
Abstract
Magnetic refrigeration stands out as one of the most promising emerging cooling technologies. It is based on the magnetocaloric effect (MCE) which is the thermal response of a magnetic material to a change in magnetic field. A magnetocaloric device is composed mainly of a magnetic circuit, a magnetic active regenerator (AMR) and a hydraulic system. The latter is based mainly on a fluid flow management system (FFMS) that allows alternating fluid flows through the AMR and it has an important role in the overall performance of the magnetic refrigerator as it is generally one of the major energy-consuming components of the device. A novel approach to achieve a more efficient FFMS for a large magnetic refrigerator (LMR) is proposed by using electronically-controlled (solenoid) valves. In the development of a LMR, several operating requirements arises that the FFMS has to overcome. To emulate the operating conditions of a LMR, an experimental apparatus has been developed and experimental analyses of a selected set of commercial solenoid valves were carried out. Their performance has been evaluated in terms of mass flow rates and operating frequencies analogous to those require by a LMR. The experimental results show that solenoid valves could be successfully applied to a LMR as the opening and closing time responses obtained by the electronic valves and the resulting mass fluid flow profile do fulfill the requirements needed to operate a LMR.
Keywords
Magnetocaloric refrigeration, large magnetic refrigerator, fluid flow management system, Solenoid Valve
DOWNLOAD PDF VIEW PRESENTATION
