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Numerical design and performance assessment of multical: a hybrid multicaloric heat pump.

Number: 0028

Author(s) : CIRILLO L., GARGIULO S., GRECO A., MASSELLI C., ORABONA V., VERNEAU L.

Summary

The growing need for sustainable and efficient thermal management has renewed interest in solid-state heat pumps based on caloric effects [1]. These systems exploit reversible temperature changes induced by magnetic, electric, or mechanical fields, enabling the use of solid materials as zero-GWP refrigerants [2]. However, single-field caloric devices still face limitations due to high field requirements and restricted temperature spans. The MULTICAL project introduces a novel approach by exploiting the multicaloric effect, where two or more caloric responses are simultaneously or sequentially activated within the same material or device. Depending on the material properties, different dual-field couplings (e.g., magneto–elasto-, electro–baro-, magneto–electrocaloric) can be tailored to improve efficiency and durability. A numerical investigation was carried out to model and optimize the MULTICAL heat pump. The magneto-baro MnCoGe0.99In0.01 and elasto-electro (Ba0.5Sr0.5)TiO3 are the materials under test. The multicaloric behaviour of MULTICAL heat pump working with (Ba0.5Sr0.5)TiO3 always overestimates (+ 30% on temperature span, +62% on cooling power) the multicaloric behaviour of the system employing MnCoGe0.99In0.01. The simulations highlight how hybrid caloric activation enhances temperature span and COP, paving the way for next-generation, fully eco-friendly refrigeration systems.

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Pages: 9 p.

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Details

  • Original title: Numerical design and performance assessment of multical: a hybrid multicaloric heat pump.
  • Record ID : 30035077
  • Languages: English
  • Subject: Technology
  • Source: 11th IIR Conference on Solid-State Cooling, Heating and Energy Harvesting.
  • Publication date: 2026/06/07
  • DOI: http://dx.doi.org/10.18462/iir.thermag.2026.0028

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