Can Placing a Fan in the Car Help Cool It Down in Summer?
1 Answers
Placing a fan in the car during summer can achieve a cooling effect. Principle of fan cooling: A fan can accelerate the airflow on the surface of an object, allowing more air to carry away the object's heat, thereby achieving the purpose of cooling. The reason people feel cooler when a fan blows on them is because there is sweat on their skin. The wind from the fan accelerates the evaporation of sweat droplets, thus removing some of the body's heat, which makes people feel cool. However, this phenomenon does not occur with a thermometer, so the temperature does not decrease, primarily because the thermometer itself does not generate heat. Harm of prolonged exposure to an electric fan: Being exposed to an electric fan for a long time can cause the body temperature to drop significantly due to the evaporation of sweat, which may lead to illnesses such as colds, flu, abdominal pain, and diarrhea.