Medindia
Advertisement

Electric Fans Helpful in Hot and Humid Conditions

by Dr. Trupti Shirole on February 18, 2015 at 10:56 AM
Font : A-A+

 Electric Fans Helpful in Hot and Humid Conditions

Electric fans prevent heat-related elevations in heart rate and core body temperature, revealed a study by researchers at the University of Sydney, New South Wales, Australia.

Researchers examined the effect of fan use at temperatures and humidities that can no longer be physiologically tolerated without rapid increases in heart rate and core body temperature. Sweat evaporation declines with increase in humidity, so in more humid environments fans may not prevent heat induced elevations in cardiovascular and thermal (core temperature) strain.

Advertisement

During the study, eight healthy males (average age, 23 years), wearing shorts and t-shirts, sat in a chamber maintained at temperatures equal to (36C; 97F) or exceeding (42C; 108F), the limits currently recommended for fan use. Researchers tested each temperature with and without an 18-inch fan facing the participant from about 3 feet. After a 20-minute baseline period, relative humidity was increased in 15 equal steps from 25 percent to 95 percent at 97F, and from 20 percent to 70 percent at 108F. Heart rate and core temperature of the study participants were measured.

The research team found that electric fans prevented heat-related elevations in heart and core temperature up to approximately 80 percent relative humidity at 97F and 50 percent relative humidity at 108F. The authors write, "Thus, contrary to existing guidance, fans may be effective cooling devices for those without air conditioning during hot and humid periods." However, the authors noted that only young participants were assessed during their study, so similar results would need to be derived for other populations i.e. elderly with illnesses and those with diminished sweat production.

The study is published in 'JAMA'.

Source: Medindia
Advertisement

Advertisement
News A-Z
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
News Category
What's New on Medindia
World Alzheimer's Day 2021 - 'Know Dementia, Know Alzheimer's
'Hybrid Immunity' may Help Elude COVID-19 Pandemic
Stroop Effect
View all

Medindia Newsletters Subscribe to our Free Newsletters!
Terms & Conditions and Privacy Policy.


Recommended Reading
Heat Exhaustion
Heat exhaustion is a heat-related illness and occurs when the body gets too hot. Heat exhaustion ......
Heat Stroke
Heat stroke is caused when body temperature or hyperthermia exceeds 40.6C or 105.1F. Heat stroke ...
Top Tips to Beat the Summer Heat
Is the summer heat making you feel tired and dizzy? Check out these simple tips to help you beat ......
Heat-related Deaths Projected to Rise In Manhattan
A new study says that residents of Manhattan will not just sweat harder from rising temperatures in ...

Disclaimer - All information and content on this site are for information and educational purposes only. The information should not be used for either diagnosis or treatment or both for any health related problem or disease. Always seek the advice of a qualified physician for medical diagnosis and treatment. Full Disclaimer

© All Rights Reserved 1997 - 2021

This site uses cookies to deliver our services. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Use