Paper Conference

Proceedings of ASim Conference 2016: 3rd Asia conference of IBPSA-China, Japan, Korea


The Effects of the Physiological Response of the Human Body and the Human Sensation by using the Directional or the Diffusible Airflow of the Personal Air-conditioning System

M. Lee, T. Chikamoto, A. Ozaki, S. Okamoto, M. Kozaki

Abstract: In recent years, energy consumption in office buildings is required to be reduced. It is important to satisfy worker's comfort to keep high productivity. However, it is difficult to keep a comfortable environment for all of the office workers. In many cases, thermal sensation of men and women is different. Workers who come in from outside tend to feel warmer than workers who have been inside. We developed a personal airconditioning system that has two outlets for each person. These outlets can supply directional or diffusible airflow, which a person can select using a PC according to their physiological condition. The purpose of this study is to verify the influence of the physiological response of the human body and the human sensation when the directional airflow is blown to one part of the human body. A warm/cool feeling and the comfort sensations are investigated by a subjective questionnaire in a laboratory. The influences of the physiological amount (skin temperature and skin wettedness rate) to the human body and the human sensation are examined by using the subjective questionnaire and a mathematical human model for heat balance of the human body, the complex thermal environment comfort model (COM). COM takes into consideration the blood circulation throughout the human body involving the extremities of the arms and legs. The calculation accuracy is verified through the comparison of calculation results and measured skin temperature. Furthermore, the parametric simulation is performed to examine the effect of the physiological response of the human body by changes in metabolic rate, clothes, temperature and wind speed of local airflow.
Keywords: Personal air-conditioning system, Local airflow, Heat balance of human body, Human sensation, Subjective experiment