Abstract
The marine structure using under hot environment should be designed with careful thought of defending the workers against heat stress. An adequate heat stress index of human body is necessary for classifying the severity of working environment and taking some counter-measures.
In order to grasp the relation between the thermal state of human body and the thermal environmental factors such as operative temperature, metabolic heat and clothes, the experiment is carried out during the excise by ergo-meter in the constant temperature and humidity room and under the sunshine environment. Being based on the results of experiment, the heat balance model of human body is established with a view of calculating the quantity of heat storage as a heat stress index.
Further, the storage of body heat defined in this report is clarified to be useful for various thermal conditions.
