Русский
English 5-10 стр.
The article deals with the properties of ferromagnetics and their behaviour in an external magnetic field. The conditions under which magnetism occurs in materials are shown and the choice of material for a magne-tostrictive emitter is justified. The composition and properties of permendur as the most suitable material for the manufacture of magnetostrictive radiators are presented. It is shown that for the manufacture of the magnetostrictor it is feasible to use electro-erosion equipment for cutting packages from permendur compared to the costly and cumbersome method of stamping in a matrix of a particular shape. Tests were carried out on a duralumin heat exchanger with artificial frostbite. The evaporator was fed with refrigerant at 0.22 MPa, which corresponds to the boiling point of R 410a refrigerant at 35°C, by means of a refrigerant line made of aluminium pipes. Frostbite was then produced by applying moist air using an ultrasonic steam generator. Frost on the evaporator surface is discharged by means of a magnetostrictor mounted on the heat exchanger. The proposed method allows for the most effective cleaning of the surfaces of heat exchangers of ventilation equipment from scale, fouling and other mechanical deposits by means of mechanical vibrations.
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14. Orlov. K.P. Invention patent 2724661, Russian Federation. A way of protecting against icing on refrigeration and ventilation units; application dated 19.06.2019. № 2019119135.
15. Orlov P.A., Ilyina T.N., Orlov K.P. Impact of mechanical vibrations on icing of air-source heat pumps. Bulletin of BSTU named after V.G. Shukhov. 2021. 6 (6). P. 36 – 44. DOI.10.34031/2071-7318-2021-6-6-36-44.
2. Giles D.S., Atherton D.L. (1984-03-15). "Theory of ferromagnetic hysteresis (invited). Journal of Applied Physics. 55 (6). 2115-2120.
3. Chizhov A.V., Pecherskaya R.M. Method of determination of maximum magnetic permeability of permalloys in constant magnetic field. Scientific and Technical Bulletin of the Volga Region. 2014. No. 3. P. 202 – 206.
4. Starodubtsev Yu.N. The world of materials and technology. Magnetically soft materials. M.: Technosphere. 2011. 664 p.
5. Mishin D.D. Magnetic materials: Textbook for universities. 2nd ed. revised and supplemented. M.: "Higher School". 1991. 384 p.
6. Bell System Technical Journal. American Telephone and Telegraph Co. 2020. 15 (1).113 – 135.
7. Han F., Chen L., Zhou. X. Basic research on a pulse generator for micro-EDM. International Journal of Advanced Manufacturing Technology. 2006. 33 (5 – 6). 474
8. Sayegh M.A. et al. Heat pump placement, connection and operational modes in European district heating. Energy and Buildings. 2018. 166. P. 122 – 144.
9. Jiang Y., Huiying F.U., Yao Ya., Yan L., Gao Q. Experimental study on concentration change of spray solution used for a novel non -frosting air source heat pump system. Energy and Buildings. 2014. 68. P. 707 – 712.
10 Chizhov A.V. Heat treatment of Fe-Co-V as a tool to improve the quality of products from magnetically soft materials. Engineering Herald of the Don. 2014. No. 2.
11. Ilina T.N., Mukhamedov R.Yu., Verevkin O.V. Prospects of using heat pumps in heating systems of low-rise residential buildings in Belgorod region. Bulletin of BSTU named after V.G. Shukhov. 2009. No. 3. P. 142 – 146.
12. Minko V.A., Ilyina T.N., Potapova O.N. Analysis of methods of utilization of heat from technological equipment in systems of creation of microclimate in production shops of dairy plants. Bulletin of BSTU named after V.G. Shukhov. 2009. No. 4. P. 109 – 112.
13. Orlov P.A., Uvarov A.V., Ilyina V.A., Orlov V.A., Orlov K.P., Orlov S.P. Impact of installation and use of geothermal heat pumps on ecology: Interuniversity International Congress. Higher School: Research, Moscow, 10 December 2020. Moscow: Infinity Publisher. 2020. 1. P. 136 – 147.
14. Orlov. K.P. Invention patent 2724661, Russian Federation. A way of protecting against icing on refrigeration and ventilation units; application dated 19.06.2019. № 2019119135.
15. Orlov P.A., Ilyina T.N., Orlov K.P. Impact of mechanical vibrations on icing of air-source heat pumps. Bulletin of BSTU named after V.G. Shukhov. 2021. 6 (6). P. 36 – 44. DOI.10.34031/2071-7318-2021-6-6-36-44.
Il`ina T.N., Orlov P.A., Chizhov A.V. Influence of material structure on the magnetostrictive properties of a radiator for defrosting heat exchangers of ventilation equipment. Construction Materials and Products. 2021. 4 (4). P. 5 – 10. https://doi.org/10.34031/2618-7183-2021-4-4-5-10