In South
Korea, some people believe that staying
overnight in a room with an electric fan will kill you if the doors and windows
are closed. The alleged causes of death are hypothermia and asphyxiation.
Causes of Death
Believers maintain that a fan can either create a vortex
that depletes oxygen in the room, or produces too much carbon dioxide from the
motor. Either way, the result is death by asphyxiation. It is also thought that
leaving a fan on all night will lower the temperature of the room so much that
sleepers could suffer hypothermia.
Media Coverage
The media is one of the major reasons for spreading this
myth. During the summer in Korea,
reports of death by fan are very common.
As one report claimed, "the heat wave which has encompassed Korea
for about a week has generated various heat-related accidents and deaths. At
least 10 people died from the effects of electric fans, which can remove oxygen
from the air and lower body temperatures."
The Truth About Fans
Fans may help you cool down on a hot day, but they do not
lower the temperature of a room. In fact, a running motor causes a slight
increase in a room's temperature, so dying from fan-induced hypothermia is
impossible. As for the possibility of
death by asphyxiation, fans do not operate by combustion. Therefore, they would
not create excessive amounts of carbon dioxide. Fans aren't powerful enough to
create a vortex that would suck the oxygen out of a room either. So again, it's
unlikely anyone would die from asphyxiation by a fan.
Although fans may not be a huge safety concern for most
Americans, they are still dangerous enough to kill people under the right
circumstances. The U.S. Centers for Disease Control and Prevention (CDC) warns
that it is unsasfe to use a fan when the temperature exceeds 90 degrees
Fahrenheit and the humidity is higher than 35%. "Many people think
electric fans are sufficient during extreme heat," said Michael McGeehin,
PhD, MSPH, Director of CDC's Division of Environmental Hazards and Health
Effects. "Fans may provide comfort, but they will not prevent heat-related
illness when the temperature is in the high 90s."
These conditions are similar to the South Korean climate
during the summer months.
Resources
http://www.cdc.gov/media/pressrel/r010713.htm
http://en.wikipedia.org/wiki/Fan_death
http://www.fandeath.net/
|
Good Answers: