Electric heaters based on nanomodified paraffin with selfinstalling heat contact for antiicing systems of aerospace crafts
Journal Title: Восточно-Европейский журнал передовых технологий - Year 2018, Vol 6, Issue 12
Abstract
Improved effectiveness of ice protection systems of aerospace crafts can be achieved with the development of more effective heaters. Self-regulating electric heaters based on positive or negative temperature coefficient have achieved the highest demand. Development of heaters with such properties involves various matrixes based on cement, glass frit, asphalt mastic, and polymers. Conductivity in such matrixes is governed by metallic or carbon filler. Carbon nanostructures possess the greatest effectiveness. The synthesis method of carbon nanostructures and composites to which they are introduced, the basic properties of resulting electric heaters are determined. To study the effectiveness of electric heaters, a non-contact method of temperature field measurement was used. CNT were synthesized using the Ni/MgO catalytic system, using the thermal decomposition method. CNT morphology was studied using the field emission electron microscope Hitachi H-800. During the investigation, it was found that for the electric heater based on paraffin modified with CNT, the basic specific power was 800±10 % W/m<sup>2 </sup>at an ambient temperature of +10 °C. When the temperature was lowered to -40 °C, specific power increased to 1,600±20 % W/m<sup>2</sup>. Dynamic change of power at different temperatures indicated the presence of a self-regulating effect. Thermal images of the heat contact have revealed that heat radiation stabilizes at 56 °С. The developed heaters can operate at a voltage up to 200 V and possess rational electrophysical and functional parameters, which allow for effective operation in ice protection systems for aircrafts
Authors and Affiliations
Alexander Shchegolkov, Anna Ostrovskaya, Vadym Kovalenko
Keywords
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- EP ID EP528351
- DOI 10.15587/1729-4061.2018.151686
- Views 66
- Downloads 0
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