Comfortable temperature refers to the equivalent temperature that an environment meets the comfort requirements under the conditions of given human activities, clothing thermal resistance and environmental temperature, that is, the temperature that the human body feels most comfortable.
According to experiments at home and abroad, the most comfortable temperature for people is 19-24℃ in summer and 17-22℃ in winter. The human body always keeps its body temperature constant. When the ambient temperature exceeds the upper limit of comfortable temperature, people will feel hot, and when it exceeds 37℃, people will feel extremely hot. The upper limit of temperature that people can tolerate is 52℃.
On the contrary, when the ambient temperature is lower than the lower limit of comfortable temperature, people will feel cold and cold; If it is below 0℃, it will feel cold. For people who are generally engaged in outdoor activities and wear appropriate clothes, the lower limit of tolerable temperature is about MINUS 34℃.
Extended data:
Eight favorite temperatures of human body.
First, the best body temperature: 37℃
The normal body temperature is 37℃. Generally speaking, 37.5 ~ 38℃ is low heat, 38 ~ 39℃ is medium heat, and 39 ~ 40℃ is high heat.
Second, the best drinking water temperature: 35 ~ 38℃
Studies have confirmed that drinking hot tea above 68.8℃ for a long time will increase the risk of esophageal cancer by 8 times; Drinking hot water all the time will damage oral mucosa and enamel.
Third, the best edible temperature: 35 ~ 50℃
Eating overheated food will destroy oral saliva enzymes and affect digestion; It will also damage the esophageal mucosa and induce cancer. Eating cold food may induce chronic stomach pain, diarrhea and malnutrition.
Fourthly, the optimal temperature for bathing and shampooing: 36 ~ 40℃
If the bath water is overheated, it will destroy the protective layer of the skin, and if it is too cold, it will easily catch a cold. Washing your hair with too hot water is easy to itch; Cold water stimulation will affect blood pressure, and long-term washing will also cause headaches.
5. Optimum washing temperature: 20 ~ 38℃
The water temperature is too hot, and the facial skin is easy to dry and fine lines appear. Although the water temperature is lower than 20℃, it has astringent effect on the skin, but it is easy to make the skin pale and weaken its elasticity.
Six, the best foot bath temperature: 38 ~ 43℃
The temperature of the feet is the lowest in the human body. Soaking feet with hot water can promote vasodilation of lower limbs, relieve fatigue and help sleep.
Seven, the best sleeping room temperature: 20℃
When the room temperature is higher than 24℃, sleep will become shallow and the number of turns will increase; When the room temperature is lower than 18℃, people are not easy to fall asleep.
Eight, the most suitable bed temperature for people to sleep is about 32 ~ 34℃.
In winter, the temperature of the indoor bed is much lower than the body temperature. Appropriate preheating measures should be taken before going to bed to avoid cold stimulation of the skin for a period of time after the human body touches the bed, which will cause excitement in the cerebral cortex and affect sleep.
Baidu encyclopedia-comfortable temperature
People's Network-8 favorite temperatures of human body, you should know that you pay attention to health.