高技术通讯2025，Vol.35Issue(7)：767-775,9.DOI:10.3772/j.issn.1002-0470.2025.07.009
翅形护套发热电缆的传热特性研究
Research on the heat transfer characteristics of fin-shaped sheathed heating cable
摘要
Abstract
In order to explore heat transfer characteristics of fin-shaped sheathed heating cable,temperature field of circu-lar sheathed heating cables and fin-shaped sheathed heating cables with different structural parameters are simula-ted,a two-dimensional heat transfer model of floor radiant heating system is established,effects of laying spacing,material of decorative flooring layer,and material of thermal insulation layer on heat transfer performance of fin-shaped sheathed heating cable are analyzed.Experimentall results show that,compared with circular sheath,fin-shaped sheath can effectively enhance heat transfer performance of heating cable.Furthermore,while inner diameter of sheath is reduced from 12 mm to 7 mm,maximum temperature drop ratio is 22.75％,and number of fins with 30 flaps increases temperature drop ratio by 7.58％compared to 15 flaps.As thermal conductivity of floor decorative layer materials increased,temperature of floor surface is increased and subsequently reduced.Temperature of floor surface,as well as the rate of temperature rise,is highest when low thermal conductivity polyurethane foam is used as insulation.In addition,decreasing spacing of heating cable can improve uniformity of temperature of floor surface effectively.When the cable laying spacing is 100 mm,increases the temperature of floor surface increases by 65.00％compared to 200 mm spacing,and temperature uniformity is improved.关键词
翅形护套/发热电缆/地板辐射采暖系统/传热性能Key words
fin-shaped sheath/heating cable/floor radiant heating system/heat transfer performance引用本文复制引用
龚德俗,张艳敏,李伟钢,陈珍珍,文东辉..翅形护套发热电缆的传热特性研究[J].高技术通讯,2025,35(7):767-775,9.基金项目
浙江省科技计划(2022C01167)和浙江省基础公益研究计划(LTGS23E050001)资助项目. （2022C01167）
