Analysis and Mitigation of Icing Effects on Wind Turbines

Ilinca, Adrian

doi:10.5772/15484

Cited by 20 publications

(20 citation statements)

References 13 publications

(54 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…is composed of a NACA 63-xxx airfoil between the blade tip and its center, and an FFA W3-xxx airfoil between the center of the blade and the hub [42]. Here we use the above-mentioned parameters into the BEM approach [43] and create the radial distribution of the twist angle and the chord length based on the aerodynamic characteristics of the NACA 63-415 and the FFA W3-241 airfoils.…”

Section: Turbine Operating Condition and Inflow Conditionsmentioning

confidence: 99%

Atmospheric Turbulence Effects on Wind-Turbine Wakes: An LES Study

2012

View full text Add to dashboard Cite

A numerical study of atmospheric turbulence effects on wind-turbine wakes is presented. Large-eddy simulations of neutrally-stratified atmospheric boundary layer flows through stand-alone wind turbines were performed over homogeneous flat surfaces with four different aerodynamic roughness lengths. Emphasis is placed on the structure and characteristics of turbine wakes in the cases where the incident flows to the turbine have the same mean velocity at the hub height but different mean wind shears and turbulence intensity levels. The simulation results show that the different turbulence intensity levels of the incoming flow lead to considerable influence on the spatial distribution of the mean velocity deficit, turbulence intensity, and turbulent shear stress in the wake region. In particular, when the turbulence intensity level of the incoming flow is higher, the turbine-induced wake (velocity deficit) recovers faster, and the locations of the maximum turbulence intensity and turbulent stress are closer to the turbine. A detailed analysis of the turbulence kinetic energy budget in the wakes reveals also an important effect of the incoming flow turbulence level on the magnitude and spatial distribution of the shear production and transport terms.

show abstract

Section: Turbine Operating Condition and Inflow Conditionsmentioning

confidence: 99%

Atmospheric Turbulence Effects on Wind-Turbine Wakes: An LES Study

2012

View full text Add to dashboard Cite

show abstract

“…Homola et al (2009) analyze wind park data in Norway and suggest a correction for power curve estimation. Ilinca (2011) reports estimated power losses due to icing conditions up to 50% of total annual production. Hughes (2012) indicates declining turbine performance due to increasing age in Denmark and the UK.…”

Section: Introductionmentioning

confidence: 99%

Efficiency of wind power production and its determinants

Pieralli

Ritter

Odening

2015

Energy

View full text Add to dashboard Cite

This article examines the efficiency of wind energy production. We quantify production losses in four wind parks across Germany for 19 wind turbines with non-convex efficiency analysis. In a second stage regression, we adapt the linear regression results of Kneip, Simar, Wilson (2014) to explain electricity losses by means of a bias-corrected truncated regression. Our results show that electricity losses amount to 27% of the maximal producible electricity. These losses can be mainly traced back to changing wind conditions while only 6 % are caused by turbine errors.

show abstract

“…The research of the wind turbine blades' anti-icing / de-icing technology is mainly in the following directions at home and abroad [6,7,8] : A. Coating technology program, improving surface temperature by using black paddle, but only the sunny day can gather temperature to melt ice, and high temperature will affect the surface material of the blade, has a low adaptability; spraying the hydrophobic chemical reagent to prevent the rain from freezing has the weaknesses of short action time, large amount and environmental pollution.…”

Section: Introductionmentioning

confidence: 99%

Research of hot air blower de-icing technology for wind turbine blade

Luo¹,

Liu²,

Chen³

et al. 2016

Proceedings of the 2016 5th International Conference on Sustainable Energy and Environment Engineering (ICSEEE 2016)

View full text Add to dashboard Cite

Abstract. Aiming at ice accretion on wind turbine blade causes power production loss and affects its normal performance safety, a novel hot air blower de-icing technique for blades was researched. The numerical simulation for the whole profile of blades was applied, and flow distribution of the blade and heat transfer between inner blade and outside were analyzed. Temperature and heat distribution on blade cavity and leading edge were measured in constant temperature laboratory, and compared the simulation and experiment data. The results indicated that the ventilation pipe design of hot air blower de-icing system contributed to the heat accumulation around blade leading edge, and the effect of heat transfer on the four key-point sections were significant. Particularly, the deviation of temperature rise on leading edge between the simulation value (9K~19K) and the test temperature value(11K~16.8K) was only 8.5%, which illustrated that it reached the requirement of de-icing from the baffle to the blade tip. The deviation between temperature value and average value of three blades leading edge was within 9.5%, which proved high consistency of data and the heat distribution of blade leading edge was reasonable. The effectiveness of hot air blower de-icing technology was verified, which was propelling the development of wind turbine application in cold weather conditions.

show abstract

Analysis and Mitigation of Icing Effects on Wind Turbines

Cited by 20 publications

References 13 publications

Atmospheric Turbulence Effects on Wind-Turbine Wakes: An LES Study

Atmospheric Turbulence Effects on Wind-Turbine Wakes: An LES Study

Efficiency of wind power production and its determinants

Research of hot air blower de-icing technology for wind turbine blade

Contact Info

Product

Resources

About