Development of new passenger-car climate control systems that contribute to improved comfort and decreased fuel consumption requires quantitative evaluations of thermal sensation and comfort. Therefore, a new evaluation method of the transient and non-uniform passenger-compartment thermal environment has been developed. Vehicle occupant's local thermal sensations are evaluated by using the local standard new effective temperature (SET) that is calculated using a human thermoregulation model. The occupant's whole-body thermal comfort is then evaluated by local thermal sensation. The theory of the method and some example application results are introduced in this paper. A 16-body-segment 128-node human thermoregulatory model was developed to enable calculation of the SET of each body segment (local SET). A new evaluation method is proposed to predict local thermal sensations and whole-body thermal comfort from the local SET in a steady-state environment. The study shows that the proposed method can predict the local thermal sensations in a transient environment by using the SET change ratio, and the whole-body thermal comfort in a transient environment by clarifying the degree of contribution of each local thermal comfort to the whole-body thermal comfort.
New evaluation method of transient and non-uniform environment in a passenger compartment
2011
13 Seiten, 14 Bilder, 10 Quellen
Aufsatz (Konferenz)
Englisch
New Evaluation Method of Transient and Non-Uniform Environment in a Passenger Compartment
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