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The researchers found that using fans was the best way to reduce the core temperature of your body, reduce heat stress in your heart and improve thermal comfort.
This came after some researchers wanted to test the validity of the public health recommendations issued by the World Health Organization and the Centers for Disease Control and Prevention in states, according to the website "Popler Science".
It was recommended to warn that when the temperature reaches 38 ° C (90 ° F), the fans do not protect people from heat-related illnesses, and that the US EPA recommends not to use fans when the temperature indicator (temperature and humidity) exceeds 25 ° C. 99 ° F (42 ° C).
The researchers found the misconceptions after documenting a study of 12 healthy men who volunteered to sit for two hours in one of two different conditions: the first in dry heat with a temperature index of 115 degrees Fahrenheit (46 degrees Celsius) and the second in wet heat with a temperature indicator. 133 ° F (56 ° C).
The researchers took four different measurements to measure the potential heat stress experienced by volunteers: the body's internal temperature, heart pressure (using heart rate and blood pressure), dehydration and their thermal comfort ratios.
"In hot, humid weather, the ventilators lowered men's core body temperature, reduced heat-related heart pressure and improved thermal comfort, and in hot, dry weather the ventilators increased body temperature, pressure heart and thermal discomfort. " Other, the fans have worked better at higher temperatures. "
They physiologically explained this: "When the air temperature exceeds the temperature of the skin, the process of switching the air between the body and the surrounding atmosphere is transformed and instead of dissipating The warm air of the body, it flows into the body in the same way as a convection oven.Because you add convection heat faster, turn on the fan will only do that. 39 accelerate the transfer of warm air to the body, which will give you a feeling of warmth, and may raise your body temperature to unhealthy levels.Benefit and possibly harmful. "
"Human perspiration is the most effective way to cool the body.If there is an excess of air pbading through the skin of a ventilator, this facilitates the evaporation of perspiration that is deposited on the skin, which is a good thing as a natural conditioning given the losses caused by high energy cooling solutions, "said the researchers. Like air conditioning in the environment, it is essential for the world to find less expensive solutions, such as fans or cold water drying. "
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