Numerical study of thermal comfort and energy efficiency about electrically heated footwear under a cold environment

IF 1 4区工程技术 Q3 MATERIALS SCIENCE, TEXTILES

International Journal of Clothing Science and Technology Pub Date : 2024-06-04 DOI:10.1108/ijcst-06-2023-0094

Yun Su, Hui Wang, Guangju Liu, Yunyi Wang, Jianlin Liu, Miao Tian

{"title":"Numerical study of thermal comfort and energy efficiency about electrically heated footwear under a cold environment","authors":"Yun Su, Hui Wang, Guangju Liu, Yunyi Wang, Jianlin Liu, Miao Tian","doi":"10.1108/ijcst-06-2023-0094","DOIUrl":null,"url":null,"abstract":"<h3>Purpose</h3>\n<p>The paper aims to reveal the relationship among energy efficiency, thermal comfort and thermal regulation of electrically heated footwear and to investigate influencing factors on the energy efficiency and thermal comfort.</p>\n<h3>Design/methodology/approach</h3>\n<p>A finite volume model was proposed to simulate the two-dimensional heat transfer in electrically heated footwear (EHF) under an extremely cold condition. The model domain consists of three-layer footwear materials, a heating pad, a sock material, an air gap and skin tissues. Model predictions were verified by experimental data from cold-contact exposure. Then the influencing factors on the energy efficiency and thermal comfort were investigated through parametric analysis.</p>\n<h3>Findings</h3>\n<p>The paper demonstrated that the skin temperature control (STC) mode provided superior thermal comfort compared to the heating pad temperature control (HPTC) mode. However, the energy efficiency for the HPTC mode with a heating temperature of 38 °C was 18% higher than the STC mode. The energy efficiency of EHF while reaching the state of thermal comfort was strongly determined by the arrangement and connection of heating elements, heating temperature, thickness and thermal conductivity of footwear materials.</p>\n<h3>Originality/value</h3>\n<p>The findings obtained in this paper can be used to engineer the EHF that provides optimal thermal comfort and energy efficiency in cold environments.</p>","PeriodicalId":50330,"journal":{"name":"International Journal of Clothing Science and Technology","volume":"38 1","pages":""},"PeriodicalIF":1.0000,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Clothing Science and Technology","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1108/ijcst-06-2023-0094","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, TEXTILES","Score":null,"Total":0}

引用次数: 0

Abstract

Purpose

The paper aims to reveal the relationship among energy efficiency, thermal comfort and thermal regulation of electrically heated footwear and to investigate influencing factors on the energy efficiency and thermal comfort.

Design/methodology/approach

A finite volume model was proposed to simulate the two-dimensional heat transfer in electrically heated footwear (EHF) under an extremely cold condition. The model domain consists of three-layer footwear materials, a heating pad, a sock material, an air gap and skin tissues. Model predictions were verified by experimental data from cold-contact exposure. Then the influencing factors on the energy efficiency and thermal comfort were investigated through parametric analysis.

Findings

The paper demonstrated that the skin temperature control (STC) mode provided superior thermal comfort compared to the heating pad temperature control (HPTC) mode. However, the energy efficiency for the HPTC mode with a heating temperature of 38 °C was 18% higher than the STC mode. The energy efficiency of EHF while reaching the state of thermal comfort was strongly determined by the arrangement and connection of heating elements, heating temperature, thickness and thermal conductivity of footwear materials.

Originality/value

The findings obtained in this paper can be used to engineer the EHF that provides optimal thermal comfort and energy efficiency in cold environments.

查看原文本刊更多论文

寒冷环境下电热鞋的热舒适度和能效数值研究

目的本文旨在揭示电热鞋的能效、热舒适度和热调节之间的关系，并研究影响能效和热舒适度的因素。设计/方法/途径本文提出了一个有限体积模型，用于模拟极冷条件下电热鞋的二维传热。模型域由三层鞋类材料、加热垫、袜子材料、气隙和皮肤组织组成。通过冷接触暴露的实验数据对模型预测进行了验证。论文结果表明，与加热垫温度控制（HPTC）模式相比，皮肤温度控制（STC）模式能提供更好的热舒适性。然而，加热温度为 38 °C 的 HPTC 模式的能效比 STC 模式高 18%。加热元件的排列和连接、加热温度、鞋类材料的厚度和导热系数在很大程度上决定了 EHF 在达到热舒适状态时的能源效率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

International Journal of Clothing Science and Technology 工程技术-材料科学：纺织

CiteScore

2.40

自引率

8.30%

发文量

审稿时长

10 months

期刊介绍： Addresses all aspects of the science and technology of clothing-objective measurement techniques, control of fibre and fabric, CAD systems, product testing, sewing, weaving and knitting, inspection systems, drape and finishing, etc. Academic and industrial research findings are published after a stringent review has taken place.