A hybrid strategy combining minimized leading-edge electric-heating and superhydro-/ice-phobic surface coating for wind turbine icing mitigation

Gao, Linyue; Liu, Yang; Ma, Liqun; Hu, Hui

doi:10.1016/j.renene.2019.03.112

Cited by 84 publications

(43 citation statements)

References 49 publications

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“…An objective and bias-free analysis of the state-of-the-art in anti-icing materials employing the virtue of water repulsion, proffers that functional material alone may not be able to ensure the desired efficacy for aircraft or wind turbine de-icing operations [144,145]. Instead, combining an icephobic coating with electric heating emerges as a convenient option for icing mitigation in atmospheric conditions [144][145][146][147][148][149][150]. The focus in these hybrid systems is on the reduced power consumption up to 50%-90% both in glaze and rime ice regimes [145,148].…”

Section: Novel Hybrid Anti-icing Systemsmentioning

confidence: 99%

“…Instead, combining an icephobic coating with electric heating emerges as a convenient option for icing mitigation in atmospheric conditions [144][145][146][147][148][149][150]. The focus in these hybrid systems is on the reduced power consumption up to 50%-90% both in glaze and rime ice regimes [145,148]. This is achievable by chemically tailoring the surface under test in a way ensuring weak water-solid interactions, while in the meantime the heating element is covering only the leading edge of the surface.…”

Section: Novel Hybrid Anti-icing Systemsmentioning

confidence: 99%

“…This is achievable by chemically tailoring the surface under test in a way ensuring weak water-solid interactions, while in the meantime the heating element is covering only the leading edge of the surface. In turn, the ice accretion in the hydrophobic surface area is low, due to the fast runback speed of the impacting water droplets, whilst thermal energy is exploited predominantly for eliminating the attached ice at the leading edge [145]. Even though the hybrid strategy is promising for real-life performance, for the case of electromechanical de-icing is of utmost importance to choose a coating that would not adversely affect the stress generation, as the latter defines the coupling between the source and the ice-substrate interface [144].…”

Section: Novel Hybrid Anti-icing Systemsmentioning

confidence: 99%

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From Extremely Water-Repellent Coatings to Passive Icing Protection—Principles, Limitations and Innovative Application Aspects

Esmeryan¹

2020

Coatings

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The severe environmental conditions in winter seasons and/or cold climate regions cause many inconveniences in our routine daily-life, related to blocked road infrastructure, interrupted overhead telecommunication, internet and high-voltage power lines or cancelled flights due to excessive ice and snow accumulation. With the tremendous and nature-inspired development of physical, chemical and engineering sciences in the last few decades, novel strategies for passively combating the atmospheric and condensation icing have been put forward. The primary objective of this review is to reveal comprehensively the major physical mechanisms regulating the ice accretion on solid surfaces and summarize the most important scientific breakthroughs in the field of functional icephobic coatings. Following this framework, the present article introduces the most relevant concepts used to understand the incipiency of ice nuclei at solid surfaces and the pathways of water freezing, considers the criteria that a given material has to meet in order to be labelled as icephobic and clarifies the modus operandi of superhydrophobic (extremely water-repellent) coatings for passive icing protection. Finally, the limitations of existing superhydrophobic/icephobic materials, various possibilities for their unconventional practical applicability in cryobiology and some novel hybrid anti-icing systems are discussed in detail.

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Section: Novel Hybrid Anti-icing Systemsmentioning

confidence: 99%

Section: Novel Hybrid Anti-icing Systemsmentioning

confidence: 99%

Section: Novel Hybrid Anti-icing Systemsmentioning

confidence: 99%

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From Extremely Water-Repellent Coatings to Passive Icing Protection—Principles, Limitations and Innovative Application Aspects

Esmeryan¹

2020

Coatings

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“…10,11 In order to effectively deal with the problem of icing on composite wind turbine blades, a large number of scholars have conducted in-depth research on the mechanism of anti-/deicing of wind turbine blades [12][13][14] and anti-/deicing methods. [15][16][17] However, the key problem of anti-icing and deicing of wind turbine blades lies in the study of ice adhesion force on the surface of wind turbine blades. Therefore, the ice adhesion force has been extensively studied by researchers.…”

Section: Introductionmentioning

confidence: 99%

Study on ice adhesion of composite anti-/deicing component under heating condition

Zhang

Chen

Liu

2020

Advanced Composites Letters

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An anti-/deicing component of composite materials for wind turbine blades is usually carried out under heating conditions. In order to study the ice adhesion properties of composite anti-/deicing component under heating conditions, an experimental platform for measuring ice adhesion force on composites was set up. Based on the heating parameters such as the heating temperature, heating voltage, and heating time, the experiments of ice adhesion of composite anti-/deicing component under deicing conditions were designed by orthogonal analysis. In this article, ice adhesion forces on composite anti-/deicing component were measured at −9.74°C, −11.58°C, −14.1°C, and −16.84°C by the proposed experiment platform, and the real ice adhesion forces under various heating parameters were measured. Through the analysis of experimental data and fitting method, the relationship between various factors and ice adhesion on composite anti-/deicing component was expounded. The influence weight of each heating parameter on the ice adhesion was analyzed. In addition, the mathematical model of ice adhesion on composite anti-/deicing component under deicing condition was established to describe the influence of deicing variables on ice adhesion in the experiments. According to the fitting function of the experimental data, the relationship between the heat consumption of composite anti-/deicing component and ice adhesion force in the process of heating is in accordance with the inverse power exponential expression, which reveals the internal relationship between ice adhesion force and energy consumption.

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“…While extensive investigations were conducted to study wind turbine icing physics and to develop effective anti-/de-icing systems for wind turbine icing protection, the majority of that research was conducted under idealized laboratory settings and unrealistic assumptions. For example, the wind turbines were assumed to site over flat surfaces with uniform incoming winds, work under idealized icing conditions, and maintain the same operating status ( 8 – 10 ). However, all wind turbines are actually installed in wind farms sited over complicated terrains and exposed to highly turbulent surface winds with airflow speed and direction varying constantly.…”

mentioning

confidence: 99%

Wind turbine icing characteristics and icing-induced power losses to utility-scale wind turbines

Gao

2021

Proc. Natl. Acad. Sci. U.S.A.

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A field campaign was carried out to investigate ice accretion features on large turbine blades (50 m in length) and to assess power output losses of utility-scale wind turbines induced by ice accretion. After a 30-h icing incident, a high-resolution digital camera carried by an unmanned aircraft system was used to capture photographs of iced turbine blades. Based on the obtained pictures of the frozen blades, the ice layer thickness accreted along the blades’ leading edges was determined quantitatively. While ice was found to accumulate over whole blade spans, outboard blades had more ice structures, with ice layers reaching up to 0.3 m thick toward the blade tips. With the turbine operating data provided by the turbines’ supervisory control and data acquisition systems, icing-induced power output losses were investigated systematically. Despite the high wind, frozen turbines were discovered to rotate substantially slower and even shut down from time to time, resulting in up to 80% of icing-induced turbine power losses during the icing event. The research presented here is a comprehensive field campaign to characterize ice accretion features on full-scaled turbine blades and systematically analyze detrimental impacts of ice accumulation on the power generation of utility-scale wind turbines. The research findings are very useful in bridging the gaps between fundamental icing physics research carried out in highly idealized laboratory settings and the realistic icing phenomena observed on utility-scale wind turbines operating in harsh natural icing conditions.

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A hybrid strategy combining minimized leading-edge electric-heating and superhydro-/ice-phobic surface coating for wind turbine icing mitigation

Cited by 84 publications

References 49 publications

From Extremely Water-Repellent Coatings to Passive Icing Protection—Principles, Limitations and Innovative Application Aspects

From Extremely Water-Repellent Coatings to Passive Icing Protection—Principles, Limitations and Innovative Application Aspects

Study on ice adhesion of composite anti-/deicing component under heating condition

Wind turbine icing characteristics and icing-induced power losses to utility-scale wind turbines

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