The indicators of humidity. Absolute humidity

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2018-03-22 02:57:06

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If the average person, the absolute humidity in the home has the comparative value and only affects the comfort of the indoor climate or the relative perception of the state of the weather outside, at the professional level, many human activities require regular monitoring and even regulating this indicator.

The Surrounding air is a natural cocktail, which contains a full range of components necessary for all life on planet Earth. Water vapor has the status of a necessary component in zhizneobespecheniya recipe written by Nature itself. Fluctuations in the concentration of moisture in the environment occur in a quite acceptable for the life of living organisms limits.

But in certain moments it is the amount of water (vapor) in the air, can provoke a variety of physical, biological and chemical processes. In such cases, the absolute humidity attains great importance, requiring constant monitoring and search of ways of its regulation. He searched for a focused study of the concentration of water vapor in the air, let us define  the most important measuring value that determines the amount of moisture dissolved in the gas.

The Majority of scientific sources give the explanation that the absolute humidity-is the amount of water (vapor) dissolved in a given volume of air. The SI system of units measures this value in grams per cubic meter. In the standard SGS absolute humidity is measured in grams per cubic centimeter. In the earth atmosphere this range varies from the level of 0.1-1.0 g/m3 recorded over the continents during winter, in the polar latitudes, and up to 30 g/m3 (and above) for the Equatorial zone.

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The study of the behavior of water (vapor) dissolved in Gaza revealed a number of interesting patterns. Creating a certain pressure, the water vapor brings about changes in barometric pressure. But the pressure of water vapor, and this directly affects the rate of absolute humidity to a certain limit, which depends only on temperature. This value is also called saturation pressure.

Reaching the saturation limit, it does not change the absolute humidity of the air. The table is based on accurately captures how at a certain point, the amount of moisture in the air can not be increased, and the excess precipitates as condensation in physical experiments or dew, fog, rain in natural conditions.

We clearly see that neither the pressure, nor the presence of other gases in the air have no effect on changing the pressure of water vapor. Lead to condensation can cooling saturated warm air. Physics temperature that accompanies this phenomenon, called the temperature of saturation point. Indicate it is usually in degrees Celsius.

Using the point of saturation, find water vapor pressure for moist air. In other words, the saturation point determines the moment when the absolute humidity reaches a size limit. The use of different units does not change the testimony of their relationship with each other.

Despite the most comprehensive estimate of the amount of moisture in the air, in most cases there is not absolute but relative humidity. To determine this value, take the ratio of absolute humidity to the maximum possible amount of moisture that can be contained in the atmospheric air for a specific temperature. Measure the relative humidity in percent.

From the relative humidity depends on the rate of evaporation of moisture from the flooring, wood or human skin. Increased amount of moisture content may affect the safety of some substances in warehouses. In the reports of meteorologist it appears the relative humidity.


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Alin Trodden - author of the article, editor
"Hi, I'm Alin Trodden. I write texts, read books, and look for impressions. And I'm not bad at telling you about it. I am always happy to participate in interesting projects."

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