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4hw.com.cn: British climatologist Tom middot; Matthews published an article on the 25th saying that the human body is' approaching the caloric limit '. When the wet bulb temperature reaches 35 ℃, the human body will lose the ability to adjust its own temperature and can only survive for a few hours. Morgan Stanley released a report that the number of people at risk of infectious diseases will increase by 1 billion in the next 50 years. Some netizens said: you'd better turn on the air conditioner indoors to continue your life!
Extended reading
How many degrees is the indoor air conditioner suitable?
The international standards organization (ISO) has a recommended value of 23 ℃ - 26 ℃ in summer and 20 ℃ - 24 ℃ in winter. In China, the decision of the State Council on strengthening energy conservation requires that the indoor air conditioning temperature should not be lower than 26 ℃ in summer and 20 ℃ in winter.
Since 2005, Japan's Ministry of environment has proposed that it is not only comfortable but also energy-saving and emission reduction to open the air conditioner at 28 ℃ in summer. Therefore, most office places fix the air conditioner temperature at 28 ℃. However, some scientific studies have pointed out that turning on the air conditioner to 28 ℃ can certainly save energy and reduce emissions, but it makes people feel uncomfortable, because about 25 ℃ is the comfortable temperature for human beings. When the relative humidity is 50% and the air velocity is 0.15m/s, the temperature of about 25 ℃ will make the human body in the most normal and ideal heat balance state. At this time, people feel most comfortable and the brain reaction is the best.
A study published in nature climate change by researchers from Maastricht University in the Netherlands shows that men prefer a temperature of about 22 ℃, but women are more adapted to a temperature of 25 ℃ or above. The reason is that there are differences in body size and fat muscle ratio between men and women. At the same temperature, women feel colder than men. Today, with more and more emphasis on gender equality, the temperature of indoor air conditioning should also take into account both men and women, take the median value, and even tilt towards women. In addition, considering the national requirements for energy conservation and emission reduction, it is a good choice to set the air conditioning temperature at 26 ℃ in summer.