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A phase change material nano-emulsion for cooling applications.

Number: 2031

Author(s) : AGRESTI F., ARX S. von, O'NEILL P., ROSSI S., BARISON S.

Summary

A nano-emulsion based on commercial PCM Rubitherm RT21HC has been successfully prepared in water with a concentration of 16 wt% and an average droplet size of less than 120 nm. Carbon Nanohorns have been incorporated into the dispersed phase as a nucleating agent. The nano-emulsion has been prepared in a batch of 200 mL with a solvent-assisted method and it has been characterized by DLS, Polarisation Intensity Differential Scattering, Rheometry, DSC, Thermoacoustic Thermal Diffusivity. Heat transfer capability has been tested with a Mettler Toledo EasyMax Synthesis Reactor. The system showed interesting stability and rheological properties; however, further work is needed to overcome some usual problems related to nano-confined systems, as the reduction of expected latent heat and PCM solidification supercooling. It can be estimated that this system shows an increase of apparent specific heat of about 8% with respect to pure water in a working temperature range of 18°C.

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Details

  • Original title: A phase change material nano-emulsion for cooling applications.
  • Record ID : 30028869
  • Languages: English
  • Subject: Technology
  • Source: 13rd IIR Conference on Phase-Change Materials and Slurries for Refrigeration and Air Conditioning. Proceedings: (online) Vicenza, Italy, September 1-3, 2021.
  • Publication date: 2021/09/01
  • DOI: http://dx.doi.org/10.18462/iir.PCM.2021.2031

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