KazNU Scientists Develop a Wind Turbine with an Innovative Anti-Icing Protection System

Scientists at Al-Farabi Kazakh National University are carrying out a research project aimed at designing and developing a wind turbine equipped with a unique thermal protection system for operation in sharply continental climatic regions. The research focuses on improving the efficiency and reliability of wind energy systems under Kazakhstan’s harsh weather conditions and advancing domestic technologies in renewable energy.

Many regions of Kazakhstan experience severe winters, low temperatures, heavy snowfall, snowstorms and significant seasonal temperature fluctuations. These climatic conditions create major challenges for the operation of wind energy installations. One of the most serious problems is the formation of ice on turbine blades.

Ice accumulation can significantly reduce the aerodynamic efficiency of turbine blades, increase air resistance, decrease electricity generation and create additional mechanical loads on the structure. The accumulation of ice may also affect the reliability and service life of key turbine components.

The main objective of the project is to develop a technical and technological solution to the problem of icing on operating wind turbines, create a wind energy system with an innovative thermal protection mechanism and test a prototype under harsh climatic conditions.

One of the central research objects is a vertical-axis wind turbine based on the Darrieus rotor, including a troposkien-type configuration. A distinctive feature of such turbines is the continuous cyclic change in the angle of attack of the airflow on the blades during rotation.

Under low-temperature and snowy conditions, this design characteristic can contribute to ice formation across a significant portion of the blade surface. Changes in the aerodynamic profile caused by icing can affect turbine performance and lead to a substantial reduction in energy generation.

As part of the project, KazNU scientists are developing a new approach to protecting wind turbines from icing. The main idea is to use hollow structural elements inside the turbine blades as channels for the circulation of warm air.

The warm air is intended to move through the internal structure of the blades, helping to heat their surfaces and reduce the risk of ice formation. The system makes use of the characteristics of the rotating turbine and the centrifugal forces generated during operation.

This approach is designed to reduce dependence on conventional external heating systems and create a more integrated thermal protection system incorporated directly into the wind turbine structure.

The project combines several scientific and engineering disciplines. The research includes theoretical modelling, aerodynamic analysis, thermal calculations, computational fluid dynamics, prototype development and experimental testing.

One of the first stages of the project involves developing a theoretical model of the icing process on wind turbine blades. Researchers will study how climatic factors such as air temperature, humidity, wind speed and the duration of adverse weather conditions affect ice formation.

Mathematical and numerical modelling will make it possible to analyse the mechanisms of ice formation, estimate the mass and thickness of ice and assess its impact on the aerodynamic performance of the wind energy installation.

The resulting data will be used in designing the thermal protection system. Based on these calculations, researchers will determine the amount of heat required to prevent ice formation on the surfaces of turbine blades.

An important component of the project is the application of computational fluid dynamics, or CFD methods. Computer modelling will allow scientists to study the interaction between airflow and turbine blades and optimise the design of the wind energy system.

Researchers will analyse airflow patterns around rotating blades, the distribution of aerodynamic loads and the effects of climatic conditions on turbine performance. This will support the development of a design better adapted to operation during severe winters.

Special attention will be given to developing a thermal protection model for the turbine blades. The researchers plan to determine the heating parameters required to prevent ice formation while minimising energy consumption.

One of the key engineering tasks will be calculating the geometric parameters of the internal channels designed to transport warm air. Scientists will investigate temperature distribution across the blade surfaces and the efficiency of heat transfer under different airflow conditions.

A distinctive feature of the technology is the use of natural ventilation within hollow structural elements. Air movement is expected to be generated by pressure differences and centrifugal forces produced during the rotation of the wind turbine.

This principle makes it possible to organise the circulation of warm air inside the turbine blades without relying on additional equipment to transport air throughout the structure.

The next stage of the project will involve preparing design and engineering documentation and manufacturing a prototype of the wind energy installation. The prototype will provide an opportunity to verify the results of theoretical and computational research under experimental conditions.

The prototype will be tested both in controlled environments and under real climatic conditions. During the tests, researchers will measure meteorological parameters, blade temperatures, airflow velocity, heat consumption, vibration levels and generated power.

Monitoring the icing process will provide objective data on the performance of the developed system under low temperatures and snowfall.

The experimental results will then be used to validate the theoretical models and further optimise the wind turbine design. This comprehensive approach will enable researchers to compare computer modelling results with real operating conditions.

One of the important objectives of the project is to improve wind turbine performance and minimise the negative effects of icing. The researchers expect that the new thermal protection system will contribute to more stable turbine operation in cold climates.

At the final stage, the project team will conduct a comprehensive analysis of the collected data and optimise the design of the wind energy installation. Key turbine parameters will be improved based on the results of experimental testing.

The scientific novelty of the project lies in the development of a wind turbine with a unique thermal anti-icing protection system based on heating blade surfaces with warm air flowing through hollow internal structural elements.

Unlike approaches that rely primarily on external heating systems, the proposed technology integrates the thermal protection mechanism directly into the structural design of the wind turbine.

Another distinctive feature of the project is the use of natural ventilation generated by the centrifugal force of the rotating turbine. This approach is intended to improve the energy efficiency of the system and reduce the need for additional equipment.

The research is interdisciplinary in nature, bringing together expertise from aerodynamics, thermal physics, mechanical engineering, energy engineering, computational modelling and materials science.

The practical significance of the project is related to the potential development of a wind energy installation capable of operating efficiently under harsh sharply continental climatic conditions.

The results of the research may be used in developing new wind energy technologies for regions characterised by cold winters and significant temperature fluctuations.

The project is particularly important for the development of domestic engineering solutions in renewable energy. The design and production of wind energy equipment and its components within the country could contribute to reducing dependence on imported technologies.

The research also supports the development of local production and assembly capabilities. This may help reduce the costs associated with creating wind energy systems and expand opportunities for their use in remote regions of Kazakhstan.

An important part of the project will be the preparation of comprehensive design, engineering and technical documentation in accordance with relevant standards and requirements. This will provide a foundation for further technological development and potential implementation in production.

In addition to its technological significance, the project has considerable educational and scientific potential. The development of the new wind energy system will contribute to strengthening the expertise of Kazakhstani engineers and researchers in renewable energy, computational modelling and modern mechanical engineering technologies.

By the completion of the project, the researchers plan to develop a semi-industrial prototype of the wind energy installation and conduct tests under real climatic conditions.

The results will expand scientific knowledge of wind turbine icing processes, contribute to the development of new approaches to thermal protection and improve the reliability of wind energy systems operating in cold climates.

This research by KazNU scientists will make an important contribution to the development of renewable energy technologies in Kazakhstan and the creation of engineering solutions that take into account the country's specific natural and climatic conditions.

The development of a wind turbine with an innovative anti-icing protection system opens new opportunities for improving the efficiency of wind energy utilisation and advancing sustainable energy infrastructure in regions with harsh climatic conditions.