Anti-icing and De-icing Techniques for Overhead Lines

Farzaneh, M.; Volat, Christophe; Leblond, Andrée

doi:10.1007/978-1-4020-8531-4_6

Cited by 92 publications

(102 citation statements)

References 25 publications

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“…Même après 15 cycles de glaçage/déglaçage, les surfaces sont hydrophobes avec un angle de contact statique supérieur à 130°. [3,14].…”

Section: Resumeunclassified

“…Les progrès réalisés dans le domaine de la science des matériaux et les nouvelles recherches effectuées sur l'adhérence de glace ont récemment renouvelé l'intérêt envers le développement de matériaux glaciophobes, dont l'utilisation est une méthode passive pour pallier les inconvénients des méthodes actives traditionnelles, comme le dégivrage mécanique et thermique [3][4]. Cependant, afin de développer de tels matériaux, l'évaluation de la force d'adhérence de la glace et la prédiction de sa variation, en fonction des caractéristiques de l'interface entre la glace et différents matériaux, s'avèrent incontournables.…”

Section: Liste Des Tableauxunclassified

“…À ce jour, il n'existe aucun matériau qui empêche complètement l'accumulation de la glace à sa surface [3,36]. Certains revêtements sont censés adhérer faiblement à la glace [3,20] et réduire considérablement l'accumulation de glace ou de neige.…”

Section: Travaux Antérieursunclassified

“…Certains revêtements sont censés adhérer faiblement à la glace [3,20] et réduire considérablement l'accumulation de glace ou de neige. Depuis plusieurs années, un grand nombre de recherches ont été menées en vue de développer ces revêtements et divers matériaux ont été étudiés [3-4, 7, 28-33, 35-40].…”

Section: Travaux Antérieursunclassified

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Contribution à l'étude des mécanismes de l'adhésion de la glace à différents matériaux et application à l'évaluation des matériaux glaciophobes /

Ghalmi¹

2013

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Several Nordic countries with cold climates like Canada are often subjected to ice storms causing major economic and social losses. Ice or sticky snow adhesion on power network equipment can be a significant issue in transmission and distribution of electrical energy for companies operating in these regions. The costs of such events can be substantial, particularly due to the cessation of economic activities, equipment failures, deicing techniques (active methods), and population safety. Because of such events, power companies have understood the need to develop so-called superhydrophobic and/or icephobic surfaces, which can significantly reduce ice adhesion (passive methods). Several studies have led to the development of a variety of new nanostructured surfaces using various strategies. These studies have led to the design of superhydrophobic surfaces with contact angles greater than 150 and low ice adhesion strength.In order to optimally reduce the ice adhesion strength on different substrates, better understanding of the various mechanisms involved in the icing process is essential. It is in this context and within the framework of Canada's research chair on atmospheric icing of power networks (INGIVRE) that this thesis was carried out, aiming to improve the knowledge of atmospheric icing, and explain the forces involved at the ice/substrate interface. Furthermore, the effect of contact angle, surface roughness and porosity on icing and ice/substrate interface was investigated.This study clearly showed that the electrostatic, van der Waals and hydrogen bond forces are the main contributors to ice adhesion to a surface at the molecular level. The electrostatic energy, based on the principle of image charge, depends on the type of material in contact with the ice, the distance between the ice and the material, and the types of ice surface defects. The van der Waals energy depends on the material type, the thickness of the liquid water layer, and the temperature. For its part, the energy associated with hydrogen bonds depends on the material type, temperature, droplet mass, as well as on IV the static and sliding contact angles. Among these three forces, the electrostatic energy is the largest. Whereas the hydrogen bond energy is larger than the van der Waals energy. However, the latter is always present as long as ice is in contact with a solid surface.The experimental study showed that ice adhesion strength depends on the surface roughness of the substrate. In the case of metals with a thin natural protective oxide layer, higher roughness leads to higher ice adhesion strength. In other words, polished metallic surfaces exhibit lower ice adhesion strengths. However, in the case of anodized aluminum surfaces coated with PTFE, the roughened needle-like structure resulted in lower ice adhesion. The experimental results showed that PTFE coatings remain resistant to icing/deicing cycles. Even after 15 icing/deicing cycles, surfaces remain hydrophobic with a static contact angle greater than 130°. LISTE ...

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“…Même après 15 cycles de glaçage/déglaçage, les surfaces sont hydrophobes avec un angle de contact statique supérieur à 130°. [3,14].…”

Section: Resumeunclassified

Section: Liste Des Tableauxunclassified

Section: Travaux Antérieursunclassified

See 2 more Smart Citations

Contribution à l'étude des mécanismes de l'adhésion de la glace à différents matériaux et application à l'évaluation des matériaux glaciophobes /

Ghalmi¹

2013

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“…water [105] 45 Figure 11.28: Potentiodynamic polarization curves of untreated, anodized and super hydrophobic samples for 24 h in sterile seawater at 2mV/s [106] ...... LIST OF TABLES icephobic coating on the outdoor surface structure [5]. Many research initiatives are underway to develop a superhydrophobic and hydrophobic coating with icephobic properties [6][7][8][9].…”

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confidence: 99%

Development of nano-structured icephobic surfaces based on plasma polymerization /

Mobarakeh¹

2014

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Accumulated ice on exposed surfaces leads to operational difficulties and extensive maintenance for power transmission lines, antennas, aircraft, ships, and ground transportation vehicles.In the present study, the low pressure plasma polymerized Hexamethyldisiloxane (PP-HMDSO) film is deposited on aluminum surfaces to create a superhydrophobic coating with icephobic properties. Prior to the deposition of this low surface energy coating, aluminum surfaces were anodized or immersed in boiling water to make micro/nano structured surfaces.Plasma parameters were optimized in order to find the best optimum conditions for having high static contact angle and low contact angle hysteresis. Hence, the Grey-based Taguchi method was used as one of the Design of Experiment (DOE) techniques. The stability of coatings was studied under accelerated aging conditions such as UV degradation, immersion in distilled water and different pH solutions, and several icing/deicing cycles. It was observed that the PP-HMDSO coatings are quite stable against UV exposure and immersion in distilled water. However, the icephobicity of the PP-HMDSO coating deposited on the anodized aluminum decreased after fifteen icing/de-icing cycles.The stability of the developed coating was improved against several icing/de-icing cycles by increasing the deposition time of plasma polymerized coating from 15 to 25 minutes. The results showed that increasing the deposition time of plasma polymerization leads to decrease of the ice adhesion strength of coatings on anodized aluminum while it has no significant effect on the PP-HMDSO coating deposited on a water-treated aluminum surface. Finally, the superhydrophobic PP-HMDSO coating also provides anti-corrosion protection for the aluminum substrate.

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Biomimetic Superhydrophobic Materials Applied for Anti‐icing/Frosting

2017

Surfaces and Interfaces of Biomimetic Superhydrophobic Materials

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Anti-icing and De-icing Techniques for Overhead Lines

Cited by 92 publications

References 25 publications

Contribution à l'étude des mécanismes de l'adhésion de la glace à différents matériaux et application à l'évaluation des matériaux glaciophobes /

Contribution à l'étude des mécanismes de l'adhésion de la glace à différents matériaux et application à l'évaluation des matériaux glaciophobes /

Development of nano-structured icephobic surfaces based on plasma polymerization /

Biomimetic Superhydrophobic Materials Applied for Anti‐icing/Frosting

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