Akademik Veri Yönetim Sistemi
8. Uluslararası Dicle Bilimsel Araştırmalar ve İnovasyon Kongresi, Diyarbakır, Türkiye, 15 - 16 Mart 2025, cilt.1, ss.796-801
Conventional vapor-compression systems are widely used for air conditioning and refrigeration needs. CFC and HCFC refrigerants in these systems have undesirable environmental effects such as ozone layer depletion and global warming. The discovery of the magnetocaloric effect and research on magnetocaloric materials have led to the emergence of magnetic refrigeration systems. Magnetic refrigeration is a new technology alternative to conventional vapor compression systems. The positive effects of magnetic cooling systems that can operate at room temperature on the environment have led to an increase in scientific studies in this field. Many device prototypes have been developed in recent years. Magnetic refrigerators developed to date have some limitations in terms of performance and production costs compared to conventional refrigerators. However, devices with high magnetocaloric effect materials and low energy requirement movement mechanisms in different configurations stand out with their refrigeration performance. In this study, a new hydraulic system design for magnetic refrigerators is presented. The aim is to improve heat transfer and reduce pressure losses and dead volumes in the installation. The refrigerant movement is provided by a piston mechanism driven by a linear actuator. It aims to reduce energy consumption by using a low friction movement mechanism and servo motor. A special configuration is created by using three-way valves to direct the fluid to the relevant working elements of the refrigerator at different cycle stages. The structure is modular to allow easy replacement of system components. Various experimental studies were carried out under different operating conditions and optimum operating parameters were determined. The energy consumption of the system was measured for different flow rates and its effect on magnetic refrigeration performance was examined.