Wind Chill

1423 WordsSep 26, 20136 Pages
Wind chill is the perceived decrease in air temperature felt by the body on exposed sin due to the flow of cold air. Wind chill temperatures are always lower than air temperature. The human body loses heat through convection, evaporation, conduction and radiation. The rate of heat loss by a surface through convection depends on the wind speed above that surface. As a surface heats the air around it, an insulating boundary layer of warm air forms agains the surface. Moving air disrupts the boundary layer, allowing for new, cooler air to replace the warm air against the surface. The faster the wind speed, the more readily the surface cools. The speed of cooling has different effect on inanimate objects…show more content…
Although high winds can make those of us with a pulse feel more miserable than normal, they don 't have the same effect on inanimate objects. Lower wind chills mean that inanimate object to the temperature more quickly, but even high winds can 't force the object 's temperature below the air temperture. That means that even though your skin might think it 's 28 degrees, your water pipes will still be balmy 40 degress. Wind Chill = 35.74 + 0.6215T "“ 35.75(V^0.16) + 0.4275T(V^0.16) T is the air temperature in degrees Fahrenheit, and V is the wind speed in miles per hour. Basically the wind chil factor you hear reported assumes that your exposed face is roughly five feet off th eground, it 's night, and you 're walking directly into the wind in an open field at a clip of about 3 mph. Remember, the basic concept behind wind chill is that stronger winds will cause exposed skin to cool more quickly. The faster skin cools, the faster frostbite can set it. As wind chills drop south of -50 or so, the onset of frostbite can take as little as five minutes, so it 's worth keeping an eye on the wind chill even if the notion of your skin "feeling like" a certain temperature may be a bit misleading. Space blankets help the athletes regulate their body temperatures which tend to drop drastically once they stop running. These sheets aren 't made of the typical
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