zurück

Magnetic heat pumps involve transferring thermal energy from a low-temperature heat source to a high-temperature heat sink through magnetic work on a solid-state refrigerant undergoing a magnetic phase transition. In the active magnetic regenerator (AMR) cycle, the coupling of thermal, hydraulic, and magnetic phenomena in a porous magnetocaloric matrix subjected to alternating flows of a liquid coolant provides cooling capacity at a specified temperature span. Noteworthy advantages of magnetic refrigeration include the reversibility of the magnetocaloric effect in select materials, the utilization of permanent magnets for magnetization work recovery, and the absence of environmentally harmful substances. In this presentation, I will review recent results on the design, commissioning, and testing of two TRL-6 magnetic cooling prototypes: a 30-bottle wine cooler and a 9000-BTU/h magnetic air conditioner. The discussion will focus on: (i) Developing high-fidelity, first-principles modeling approaches and artificial intelligence-based methods to design and optimize magnetic circuit-AMR assemblies; (ii) Designing, optimizing, and integrating ancillary sub-systems, such as heat exchangers, insulated cabinets, and hydraulic management systems (flow-magnetic field synchronization and control); (iii) Proposing thermodynamic performance evaluation criteria (1st and 2nd-law based) and test procedures for magnetic refrigerators based on standards and test methods for conventional systems; and (iv) Outlining the major challenges involved in commercializing magnetic cooling technologies and identifying new areas in need of further research.

Wann?

18. Juni 2024, 16:00-17:00

Wo?

Zoom (link on website)

Zoom (link on website)

Veranstalter

SFB270

https://www.veranstaltungskalender.tu-darmstadt.de/media/Teaser_Colloquium_2024_1713336188562_255.PNG
 

Tags

MaWi