PROVIDING TECHNICAL PARAMETERS OF RESISTIVE CABLES OF THE HEATING FLOOR SYSTEM WITH PRESERVATION OF THERMAL RESISTANCE OF INSULATION
Introduction. The main purpose of resistive cables is to convert the current flowing through the cable into heat. The maximum operating temperature of the conductive core should not exceed 100 °C. Power output per cable per unit length (nominal specific electrical power per 1 m of heating cable at r...
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| Дата: | 2020 |
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| Автори: | , , , |
| Формат: | Стаття |
| Мова: | English Ukrainian |
| Опубліковано: |
National Technical University "Kharkiv Polytechnic Institute" and State Institution “Institute of Technical Problems of Magnetism of the National Academy of Sciences of Ukraine”
2020
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| Онлайн доступ: | http://eie.khpi.edu.ua/article/view/2074-272X.2020.3.07 |
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| Назва журналу: | Electrical Engineering & Electromechanics |
Репозитарії
Electrical Engineering & Electromechanics| id |
eiekhpieduua-article-206157 |
|---|---|
| record_format |
ojs |
| institution |
Electrical Engineering & Electromechanics |
| collection |
OJS |
| language |
English Ukrainian |
| topic |
резистивний однопровідниковий нагрівальний кабель питома потужність лінійна напруга теплова стійкість поліетиленова термореактивна ізоляція 621.319 resistive single conductor heating cable specific power linear voltage thermal stability polyethylene thermosetting insulation 621.319 |
| spellingShingle |
резистивний однопровідниковий нагрівальний кабель питома потужність лінійна напруга теплова стійкість поліетиленова термореактивна ізоляція 621.319 resistive single conductor heating cable specific power linear voltage thermal stability polyethylene thermosetting insulation 621.319 Bezprozvannych, G. V. Grynyshyna, M. V. Kyessayev, A. G. Grechko, O. M. PROVIDING TECHNICAL PARAMETERS OF RESISTIVE CABLES OF THE HEATING FLOOR SYSTEM WITH PRESERVATION OF THERMAL RESISTANCE OF INSULATION |
| topic_facet |
резистивний однопровідниковий нагрівальний кабель питома потужність лінійна напруга теплова стійкість поліетиленова термореактивна ізоляція 621.319 resistive single conductor heating cable specific power linear voltage thermal stability polyethylene thermosetting insulation 621.319 |
| format |
Article |
| author |
Bezprozvannych, G. V. Grynyshyna, M. V. Kyessayev, A. G. Grechko, O. M. |
| author_facet |
Bezprozvannych, G. V. Grynyshyna, M. V. Kyessayev, A. G. Grechko, O. M. |
| author_sort |
Bezprozvannych, G. V. |
| title |
PROVIDING TECHNICAL PARAMETERS OF RESISTIVE CABLES OF THE HEATING FLOOR SYSTEM WITH PRESERVATION OF THERMAL RESISTANCE OF INSULATION |
| title_short |
PROVIDING TECHNICAL PARAMETERS OF RESISTIVE CABLES OF THE HEATING FLOOR SYSTEM WITH PRESERVATION OF THERMAL RESISTANCE OF INSULATION |
| title_full |
PROVIDING TECHNICAL PARAMETERS OF RESISTIVE CABLES OF THE HEATING FLOOR SYSTEM WITH PRESERVATION OF THERMAL RESISTANCE OF INSULATION |
| title_fullStr |
PROVIDING TECHNICAL PARAMETERS OF RESISTIVE CABLES OF THE HEATING FLOOR SYSTEM WITH PRESERVATION OF THERMAL RESISTANCE OF INSULATION |
| title_full_unstemmed |
PROVIDING TECHNICAL PARAMETERS OF RESISTIVE CABLES OF THE HEATING FLOOR SYSTEM WITH PRESERVATION OF THERMAL RESISTANCE OF INSULATION |
| title_sort |
providing technical parameters of resistive cables of the heating floor system with preservation of thermal resistance of insulation |
| title_alt |
ЗАБЕЗПЕЧЕННЯ ТЕХНІЧНИХ ПАРАМЕТРІВ РЕЗИСТИВНИХ КАБЕЛІВ СИСТЕМИ ТЕПЛОЇ ПІДЛОГИ ЗА УМОВИ ЗБЕРІГАННЯ ТЕПЛОВОЇ СТІЙКОСТІ ІЗОЛЯЦІЇ |
| description |
Introduction. The main purpose of resistive cables is to convert the current flowing through the cable into heat. The maximum operating temperature of the conductive core should not exceed 100 °C. Power output per cable per unit length (nominal specific electrical power per 1 m of heating cable at rated line voltage per 1m cable) is the main technical parameter of these cables. The heat released by the conductivity of the core current, taking into account the change in the resistivity of the core material from temperature, is directly proportional to the square of the linear voltage drop across the core, and inversely proportional to the linear resistance of the core. Typical heat dissipation in such cables does not exceed 10 W/m, provided the cable is placed in the air. Purpose. Determination of the specific power of the cable system when varying the thickness of the insulation and the protective polymer shell, provided the thermal stability of the insulation on the basis of thermal balance between the power released in the core and the power released into the environment from the surface of the resistive heating. Methodology. The calculation of the linear heat flux is performed in two steps: when changing the radius of insulation (thickness of insulation) and the constant thickness of the protective polymer shell; at constant thickness of insulation and change of radius of the protective polymer jacket . The highest values of linear heat flux at (70-90) W/m are achieved for the optimum design of a single-conductor resistive cable from a conductive core in the range of 0,4 mm to 1,6 mm when varying the thickness of the cross-linked polyethylene insulation and protective sheath based on polyvinyl chloride plastic. The specific power of heating resistive cables, provided the thermal stability of the crosslinked polyethylene insulation is determined based on the thermal balance between the power generated in the core and the power dissipated from the surface of the cable into the air. Practical value. The thickness of the insulation and the linear voltage of the heating resistive cable, depending on the material of the core, providing thermal stability of the insulation are substantiated. The methodology of substantiation of specific power, which corresponds to thermal stability of heating resistive cables on the basis of thermal balance, can be applied to both the floor heating system and other areas of application of heating cables. |
| publisher |
National Technical University "Kharkiv Polytechnic Institute" and State Institution “Institute of Technical Problems of Magnetism of the National Academy of Sciences of Ukraine” |
| publishDate |
2020 |
| url |
http://eie.khpi.edu.ua/article/view/2074-272X.2020.3.07 |
| work_keys_str_mv |
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2024-06-01T14:39:35Z |
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eiekhpieduua-article-2061572020-06-25T09:02:14Z PROVIDING TECHNICAL PARAMETERS OF RESISTIVE CABLES OF THE HEATING FLOOR SYSTEM WITH PRESERVATION OF THERMAL RESISTANCE OF INSULATION ЗАБЕЗПЕЧЕННЯ ТЕХНІЧНИХ ПАРАМЕТРІВ РЕЗИСТИВНИХ КАБЕЛІВ СИСТЕМИ ТЕПЛОЇ ПІДЛОГИ ЗА УМОВИ ЗБЕРІГАННЯ ТЕПЛОВОЇ СТІЙКОСТІ ІЗОЛЯЦІЇ Bezprozvannych, G. V. Grynyshyna, M. V. Kyessayev, A. G. Grechko, O. M. резистивний однопровідниковий нагрівальний кабель питома потужність лінійна напруга теплова стійкість поліетиленова термореактивна ізоляція 621.319 resistive single conductor heating cable specific power linear voltage thermal stability polyethylene thermosetting insulation 621.319 Introduction. The main purpose of resistive cables is to convert the current flowing through the cable into heat. The maximum operating temperature of the conductive core should not exceed 100 °C. Power output per cable per unit length (nominal specific electrical power per 1 m of heating cable at rated line voltage per 1m cable) is the main technical parameter of these cables. The heat released by the conductivity of the core current, taking into account the change in the resistivity of the core material from temperature, is directly proportional to the square of the linear voltage drop across the core, and inversely proportional to the linear resistance of the core. Typical heat dissipation in such cables does not exceed 10 W/m, provided the cable is placed in the air. Purpose. Determination of the specific power of the cable system when varying the thickness of the insulation and the protective polymer shell, provided the thermal stability of the insulation on the basis of thermal balance between the power released in the core and the power released into the environment from the surface of the resistive heating. Methodology. The calculation of the linear heat flux is performed in two steps: when changing the radius of insulation (thickness of insulation) and the constant thickness of the protective polymer shell; at constant thickness of insulation and change of radius of the protective polymer jacket . The highest values of linear heat flux at (70-90) W/m are achieved for the optimum design of a single-conductor resistive cable from a conductive core in the range of 0,4 mm to 1,6 mm when varying the thickness of the cross-linked polyethylene insulation and protective sheath based on polyvinyl chloride plastic. The specific power of heating resistive cables, provided the thermal stability of the crosslinked polyethylene insulation is determined based on the thermal balance between the power generated in the core and the power dissipated from the surface of the cable into the air. Practical value. The thickness of the insulation and the linear voltage of the heating resistive cable, depending on the material of the core, providing thermal stability of the insulation are substantiated. The methodology of substantiation of specific power, which corresponds to thermal stability of heating resistive cables on the basis of thermal balance, can be applied to both the floor heating system and other areas of application of heating cables. Встановлено діапазон значень лінійного теплового потоку в залежності від розмірів конструктивних елементів резистивного нагрівального кабелю коаксіальної конструкції. На підставі теплового балансу потужностей, що виділяється в струмопровідній жилі та розсіюється з поверхні кабелю, визначено питома потужність нагрівальних резистивних кабелів системи теплої підлоги за умови забезпечення теплової стійкості поліетиленової термореактивної ізоляції. Обґрунтовано товщина ізоляції та лінійна напруга нагрівального резистивного кабелю в залежності від матеріалу струмопровідної жили, що забезпечують теплову стійкість ізоляції. National Technical University "Kharkiv Polytechnic Institute" and State Institution “Institute of Technical Problems of Magnetism of the National Academy of Sciences of Ukraine” 2020-06-25 Article Article application/pdf application/pdf http://eie.khpi.edu.ua/article/view/2074-272X.2020.3.07 10.20998/2074-272X.2020.3.07 Electrical Engineering & Electromechanics; No. 3 (2020); 43-47 Электротехника и Электромеханика; № 3 (2020); 43-47 Електротехніка і Електромеханіка; № 3 (2020); 43-47 2309-3404 2074-272X en uk http://eie.khpi.edu.ua/article/view/2074-272X.2020.3.07/206287 http://eie.khpi.edu.ua/article/view/2074-272X.2020.3.07/206288 Copyright (c) 2020 G. V. Bezprozvannych, M. V. Grynyshyna, A. G. Kyessayev, O. M. Grechko https://creativecommons.org/licenses/by-nc/4.0 |