The human body temperature is dynamically balanced, that is, balanced between heat generation and heat dissipation. When the outside reaches 36 degrees, it is difficult to dissipate heat. Not only will it be hot at this time, but the body temperature will also rise. It will be more comfortable when the heat is generated and dissipated at about 23 degrees.
If the temperature exceeds 35℃, the sweat glands of the human body will start at this time, and the body temperature will be accumulated by sweating slightly, which will speed up the heartbeat and blood circulation, and you will feel dizzy, uncomfortable and tired. Conversely, when the temperature is below 4℃, you will feel cold.
When people are properly dressed, fully warm and in a quiet state, the indoor temperature 18-24℃ is comfortable, 18℃ has no cold feeling, and 15℃ is the temperature limit of obvious cold feeling.
National Code for Design of Heating, Ventilation and Air Conditioning
In order to improve the quality of life and meet the requirement of adjustable room temperature, according to the national standard GB500 19-2003 Code for Design of Heating, Ventilation and Air Conditioning, the indoor temperature range of main rooms in civil buildings is set to 18-24℃.
When the ambient temperature is 18-25℃ and the relative humidity is 40%-70%, the human body feels most comfortable. When the temperature is 24-30℃ and the humidity is less than 60%, the human body feels hot but not stuffy; When the temperature is higher than 30℃ and the humidity is higher than 70%, the human body feels sultry; When the temperature is higher than 36℃ and the humidity is higher than 80%, the human body feels sultry, the sweating mechanism is blocked, and it is easy to get heatstroke.