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dengzuyu

木虫 (著名写手)

[交流] 请教挥发量(度)的计算公式

哪位虫子知道液体的挥发量(度)的计算公式,比如是水溶液的挥发除了与温度,液体表面积有关外,与溶液的体积有关吗???
望赐告~!
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爱的人千万不要让她擦肩而过,否则爱情会因为距离而成为一种传说!
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westwolf

木虫 (著名写手)


看看下面几个网站的信息
Evaporation of water

Evaporation is the process where a liquid, in this case water changes from a liquid to a gaseous state. It is a misconception that at 1 atm, water vapor only exists at 100 °C. Water molecules are in a constant state of evaporation and condensation flux near the surface of liquid water. If a surface molecule receives enough energy, it will leave the liquid and turn into vapour pending an allowable vapor pressure. Under a pressure of 1 atm, water will boil at 100 °C.

The ratio of the heat loss from a pond by evaporation to the heat loss due to convection, independent of windspeed, is given by:

   
where Qc,pa is the heat loss from the pond by convection, in W/(m2·K), Qe is the heat loss from the pond by evaporation, in W/(m2·K), Tp and Ta are the Kelvin (or Celsius) temperatures of the water and air, and Pwp and Pa are the vapor pressures of the pond surface and air, and p is the barometric pressure, with all pressures in mm Hg. (Bowen, 1926)



http://www.grow.arizona.edu/Grow ... .php?ResourceId=208
http://www.newton.dep.anl.gov/askasci/wea00/wea00063.htm
http://archive.orr.noaa.gov/



[swf]http://www.grow.arizona.edu/flash/water/evaporationpan.swf[/swf]


[swf]http://www.grow.arizona.edu/flash/water/evap_swimmingpool.swf[/swf]
2楼2006-06-05 05:49:40
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dengzuyu

木虫 (著名写手)

谢谢斑竹了
爱的人千万不要让她擦肩而过,否则爱情会因为距离而成为一种传说!
3楼2006-06-05 17:44:06
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