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A Numerical Study of Automotive Indoor Thermal Comfort Model According to Boarding Conditions and Parameters Related to HVAC

HVAC 관련 매개변수 및 탑승조건에 따른 자동차 실내의 온열쾌적성 평가모델에 관한 수치해석적 연구

  • Received : 2014.05.07
  • Accepted : 2014.07.09
  • Published : 2014.09.01

Abstract

Recently, the interest in the thermal comfort is ever increasing as the time people stay in the automobile is gradually increasing. So far, however, the cooling performance of the HVAC(heating and ventilation air conditioning) system is evaluated by thermal environment criteria such as indoor air velocity and temperature, not by a thermal comfort index. Furthermore, the precise criteria has not been established yet when the thermal comfort for the automobile is evaluated using numerical analysis. In this study, the numerical analysis of automobile indoor thermal comfort according to various parameters such as HVAC operating mode, airflow, passenger boarding conditions is performed during the HVAC system's initial operating time(20 minutes). The solar ray tracing model and S2S radiation model are used and validated to simulate an external heat source. Based on this study, an evaluation model which can predict the thermal comfort index for the combination of the above parameters is presented.

Keywords

Thermal Comfort;PMV(Predicted Mean Vote);PPD(Predicted Percentage of Dissatisfied);Solar Ray Tracing Model

Acknowledgement

Supported by : 한국 연구재단

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Cited by

  1. Investigation on the Performance of Special Purpose Automotive Air-Conditioning System Using Dual Refrigeration Cycle vol.40, pp.4, 2016, https://doi.org/10.3795/KSME-B.2016.40.4.213
  2. Design and Cooling Performances of an Air Conditioning System with Two Parallel Refrigeration Cycles for a Special Purpose Vehicle vol.7, pp.2, 2017, https://doi.org/10.3390/app7020190