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Adapting Segmental Models of Human Thermoregulation and Thermal Sensation for use in a Thermal Simulation of a Vehicle Passenger Compartment
Yokohama2006/F2006D129

Authors

Allen Curran* - ThermoAnalytics, Inc.
Mark Hepokoski - ThermoAnalytics, Inc.
John Curlee - ThermoAnalytics, Inc.
David Nelson - Michigan Technological University
Abhishek Biswas - Michigan Technological University

Abstract

This paper presents the method by which a multi-segmental human
thermoregulation model and a thermal sensation model were adapted to predict human
comfort in a thermal simulation of a vehicle passenger compartment.
The thermoregulation model was modified to calculate tissue temperatures for a human body
described by a surface mesh. A mesh is essential to the calculation and application of non-uniform
boundary conditions (solar loading, radiation, conduction and convection) present in
a vehicle passenger compartment. Temperatures calculated by the modified thermoregulation
model were subsequently used in a mathematical model for predicting thermal sensation. The
resulting thermal comfort model was validated by comparing the predicted thermal sensation
of a sedentary passenger in a range of mild, steady-state environments to the corresponding
Predicted Mean Vote (PMV) associated with each environment.
The process for predicting human comfort is discussed including the generation of a mesh of
suitable fidelity, the implementation of the thermoregulation model and the determination of
localized clothing resistance values from whole-body values.

Keywords - Thermoregulation, comfort, clothing, simulation, human

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