There is a study on the temperature reduction of the electric fan. New research finds that in some cases, it will be more hot and injuring

With the increasing drama of global climate change, extreme high temperature weather is becoming more and more frequent, especially for older people, these heat waves may bring greater health risks.

How to effectively reduce temperature has become the key problem at present, and as a cheap and commonly used temperature reduction tool, the effect of fan at extremely high temperatures is also the focus of research.

was published in the Journal of American Medical Association Online Open Edition (JAMA Network Open) research shows that if the fan is used correctly, it can still reduce temperature in high temperature environments, and can effectively reduce internal temperature and improve comfort even in an environment of about 37 degrees Celsius, but the premise is to be matched with correct usage skills.

The following are the key findings of the study:

1. The point of use of fans

At 37 degrees Celsius and 60% humidity, the fan can help reduce the burden on the heart, slightly reduce the internal temperature, and enhance comfort. This is especially important for older people over 65 or those with a psychopathy, because fans can reduce their physical pressure in the heat.

However, when the temperature reaches about 40 degrees Celsius, the fan may actually make the body hotter and increase the risk of heat stroke. In this extremely high temperature situation, using air conditioners or finding air conditioners to escape the summer heat is safer and more effective.

2. Keeping moisture is the key.

Sweat helps dissipate heat, and the fan accelerates sweat evaporation, thereby helping to reduce temperature. However, this process is only effective when sufficient moisture is maintained. If the body is dehydrated, the sweat evaporation efficiency will be greatly reduced, resulting in unsatisfactory temperature reduction effect.

Therefore, retaining moisture is of paramount importance. It is best practice to take about 240 ml of water per hour and avoid waiting until you are thirsty before drinking water. Bringing water through your body and constantly replenishing can ensure that your body always has a good temperature reduction state.

3. The effect of combining skin moisture is better

In high temperature environments, combining fan and skin moisture (such as spraying water) can significantly improve the temperature reduction effect. As the fan promotes sweat evaporates, skin moisture further accelerates this process, thereby reducing the burden on the heart and improving comfort.

At extremely high temperatures, this double temperature reduction method is especially effective for protecting the elderly. If you have air conditioning at home, you can turn on to slightly reduce indoor temperature, then turn on the fan and spray the skin. This will not only achieve a temperature reduction effect, but also save energy.