Measuring Convective Heat Transfer Coefficients for Individual Human Body Segments in the HVAC System of a Vehicle

Jun-Seok Park; Ji-Hyun Yoo; Seung-Woo Choi

doi:10.22696/jkiaebs.20230018

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2023 Vol.17, Issue 5 Next Page

Research Article

Measuring Convective Heat Transfer Coefficients for Individual Human Body Segments in the HVAC System of a Vehicle 차량 공조 시 신체 부위별 대류 열전달계수 측정

30 October 2023. pp. 217-228

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Abstract

As well as in buildings, HVAC is an important system that significantly influences energy performance and thermal comfort in vehicles. The thermal comfort indices developed for homogeneous indoors could not be applied to the inhomogeneous thermal environment of vehicles. Several human thermal physiological models have been developed to simulate transient and local inhomogeneities in the thermal environment. In this study, specific convective heat transfer coefficients of human body segments were measured through experiments in a chamber to develop a human thermal physiological model that can be used for vehicles. It is confirmed from the experiments that the convective heat transfers are significantly varied with human body segments under HVAC fan operation because of air velocity. The convective heat transfer on the subject segments ranged from 41.0 to 145.6 W/m² and from 51.7 to 118.7 W/m² for the second and seventh fan speeds, respectively. The model for convective heat transfer coefficients of each segment was proposed to predict the convective heat transfer in the human body. The model and results of this study could help evaluate the inhomogeneous thermal environment, and also design HVAC systems for vehicles.

Keywords

Thermal environment

Convective heat transfer

body segments

HVAC system

Vehicle

키워드

온열환경

대류열전달

신체부위

냉난방장치

차량

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Information

Publisher :Korean Institute of Architectural Sustainable Environment and Building Systems
Publisher(Ko) :한국건축친환경설비학회
Journal Title :Journal of Korean Institute of Architectural Sustainable Environment and Building Systems
Journal Title(Ko) :한국건축친환경설비학회논문집
Volume : 17
No :5
Pages :217-228
Received Date : 2023-08-24
Revised Date : 2023-10-12
Accepted Date : 2023-10-23
DOI :https://doi.org/10.22696/jkiaebs.20230018

Journal of Korean Institute of Architectural Sustainable Environment and Building Systems ISSN:1976-6483(Print) 2586-0666(Online) 한국건축친환경설비학회논문집

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