# Biomimetic anti-icing surfaces applied to second generation refrigerating systems

Florian Bas, Maude Jimenez, Vincent Thomy, Laurence Fournaison, Anthony

Delahaye, Pascal Clain, Yannick Coffinier

► To cite this version:

Florian Bas, Maude Jimenez, Vincent Thomy, Laurence Fournaison, Anthony Delahaye, et al. Biomimetic anti-icing surfaces applied to second generation refrigerating systems. Biofouling & Environment, Jul 2024, Lorient (56100), France. hal-04894730

HAL Id: hal-04894730

https://hal.science/hal-04894730v1

Submitted on 17 Jan 2025

HAL is a multi-disciplinary open access
archive for the deposit and dissemination of sci-
entific research documents, whether they are pub-
lished or not. The documents may come from
teaching and research institutions in France or
abroad, or from public or private research centers.

L'archive ouverte pluridisciplinaire HAL, est
destinée au dépôt et à la diffusion de documents
scientifiques de niveau recherche, publiés ou non,
émanant des établissements d'enseignement et de
recherche français ou étrangers, des laboratoires
publics ou privés.

<figure><img src="image_1.png" /></figure>

Distributed under a Creative Commons Attribution 4.0 International License
# BIOMIMETIC ANTI-ICING SURFACES APPLIED TO SECOND GENERATION REFRIGERATING SYSTEMS

BAS Florian*¹,², JIMENEZ Maude²,³, THOMY Vincent¹, FOURNAISON Laurence⁴, DELAHAYE Anthony⁴, Pascal CLAIN⁵, COFFINIER Yannick¹

1. Univ. Lille, CNRS, Univ. Polytechnique Hauts-de-France, UMR 8520 - IEMN - Institut d'Electronique de Microélectronique et de Nanotechnologie, F-59000 Lille, France

2. Univ. Lille, CNRS, INRAE, Centrale Lille Institut, UMR 8207 - UMET - Unité Matériaux et Transformations, France

3. Institut Universitaire de France (IUF), Rue Descartes, 75000 Paris

4. Univ Paris Saclay, INRAE, FRISE, F-92761 Antony, France

5. Leonard de Vinci Pôle Universitaire, Research Center, 92916 Paris La Défense, France

## Résumé:

One action to protect environment in this global climate change crisis is to lower the use of CFCs (ChloroFluoroCarbons) in primary refrigerating systems. To reduce the use of such substances, second generation refrigerating systems using ecological high energy density refrigerant (ice slurry) have been developed. However, such processes need mechanical parts that tend to wear out, damage the surface of the ice slurry generator and consequently lead to high maintenance costs. In addition, its mechanical ice slurry production increases the electricity consumption [1]. To limit these drawbacks, we aim, through a multidisciplinary collaborative project, to develop eco-efficient ice slurry generators with motionless mechanical parts, through surface modifications. Ice particles would be carried away by the flow without adhering to this surface. We target to design, inspired from the Nepenthes pitcher plant, biomimetic non-wetting laser structured stainless surfaces infused by an inert ecological lubricant, leading to Slippery Liquid Infused Porous Surfaces (SLIPS) [2] presenting anti-icing properties (Figure 1.a). After a review of possible lubricants (ionic liquid, silicone oil, vegetable oil), it was decided to focus on fatty compounds, such as fatty alcohol, fatty ester or glyceride (Figure 1.b). The first goal is to match the chemical structure of fats and their slippery property in order to identify the most efficient lubricant for our application.

<figure><img src="image_2.png" /><figcaption>Figure 1. (a) Laser structured stainless steel surface (b) Frozen water droplet on a triglyceride-infused SLIPS</figcaption></figure>

## Références:

[1] W. Samah et al., "Review on ice crystallization and adhesion to optimize ice slurry generators without moving components," Applied Thermal Engineering, vol. 223, p. 119974, Mar. 2023, doi: 10.1016/j.applthermaleng.2023.119974.

[2] A.-S. Vaillard et al., "Highly stable fluorine-free slippery liquid infused surfaces," Surfaces and Interfaces, vol. 42, p. 103296, Nov. 2023, doi: 10.1016/j.surfin.2023.103296.

**Mots clés:** Environmentally-friendly, Anti-icing, Biomimetism, Laser ablation, Refrigerating systems

<footnote>*Orateur : BAS Florian, florian.bas@univ-lille.fr</footnote>