# Human factor

Topics: Dew point, Humidity, Psychrometrics Pages: 1 (260 words) Published: April 15, 2014
Define human error, and explain the HFACS method used to classify human error and how HFACS can be both reactive and proactive.

Remember, you must have a title page, 300 word body written in 3rd person, and at least two references. the temperature remains constant and moisture is added by evaporation, the absolute humidity(volume of water per volume of air) will increase, the relative humidity (percentage of saturation achieved) will also increase and the dew point temperature will also increase.

Say a cubic meter of air at 15 degrees Celsius with about 7 grams water has an absolute humidity of 7 gr / m3, a relative humidity of about 50 percent (because at 15 C the air is saturated with about 13 grams of water) and the dew point temperature will be about 5 C because you can use the rule of thumb that the relative humidity is 100 minus five times the spread. The latter being the difference between ambient and dew point. Working this the other way around, the spread is 10 C and the dew point: 15 - 10 = 5 C.

But if you fully saturate that air with moisture, the absolute humidity is about 13 g / m3, the relative one, 100 percent, of course, and the dew point will be the same as the ambient temperature: 15 C.

Note that those are approximate calculations. A more accurate one can be done with a psychrometric chart.

EDITED: I forgot to say: evaporation takes latent heat energy. That is why we sweat; its evaporation cools down our skin. So this is only a theoretical question because if evaporation occurs, the air will cool down.