Search Results

This study investigates the complexities associated with quantifying human thermal comfort using indices. A detailed review of the literature is first performed. The uncertainties associated with comfort modeling are then highlighted. Possible indices are developed and evaluated using integrated human-suit-PLSS (Portable Life Support System) simulations developed at the University of Missouri. The study forms part of a larger project aimed at developing automatic thermal controllers for NASA space suits.

This paper presents a definition of human thermal comfort that can be used for control purposes. A control strategy and architecture based on a Proportional Integral Derivative (PID) controller format is developed. Problems and limitations are discussed and the results from both simulations and experiments are used to demonstrate the practicality of the comfort definition.