Dehumidifier home prices at a certain temperature, moist air in the higher partial pressure of water vapor, the greater the absolute humidity. However, at a certain temperature the partial pressure of water vapor can not exceed the corresponding saturation pressure ps, due to pressure saturated water vapor starts to condense. Therefore, the water vapor saturation, temperature, humid air with the greatest absolute humidity ps. This time, moist air is called saturated air. According to equation (7-21) has 
 (7-22) 
 Moist air in less than saturation, partial pressure of water vapor which is always less than the saturation pressure pv ps, steam is superheated. 
 Relative humidity: the degree of air humidity on human feelings and health, the impact of the equipment, as well as the impact of industrial process depends mainly on the air from the saturation level. Therefore, the absolute humidity of the air used pv wet and saturated with air temperature, absolute humidity, the ratio of ps to measure the level of air moisture. This ratio is called relative humidity, with the symbol. In accordance with the formula (7-21) and (7-22) have 
 (7-23) 
 Relative humidity values ??in the 0 to 100% range. The smaller the relative humidity, water vapor in the air that farther away from saturation, the greater the capacity of the air absorb moisture, Jiyu dry; relative humidity the greater the distance that water vapor in the air saturation the closer, the air's ability to absorb water smaller, that is, the more humid air. Saturation of air relative humidity of 100%, unless the air temperature increase, or it can not absorb moisture. ★ ★ ★ (Galileo Galileo) machinery, equipment industry, high-end brands - the European Quality ★ ★ ★ 
 ★ ★ ★ (Galileo Galileo) machinery, equipment industry, high-end brands - the European Quality ★ ★ ★ 
 ★ ★ ★ I continuously introduced from Europe to update the technology of various products, so that the level of a leading ★ ★ ★ 
 ★ ★ ★ At the same time, the company based on the introduction of European technology to join our innovative, to make products more suitable for domestic use, better and live longer ★ ★ ★ 
 ★ ★ ★ For details of this product and related information, please visit our Web site: Http: / / www.gggzzz.net Http: / / www.camao.net ★ ★ ★ 
 ★ ★ ★ Line Customer Service QQ: (845994233) (1057592131) (1695929475) (1359610297) (1351394970) ★ ★ ★ 
 ★ ★ ★ welcome to call :021-51872434 \ \ 51012590 \ \ 51029332 \ \ 15026907675 \ \ 15026907667 \ \ 15026907692 \ \ 15026907705 ★ ★ ★ 

 Saturated vapor pressure ps and the dew point temperature Td: water vapor in the air is not saturated in the overheated state, the state 1 in Figure 7-1, while the saturated water vapor in the air in the saturated vapor state, which is in line with the previous figure . Saturated unsaturated air can be experienced in different ways. In the case of constant temperature, water evaporates into the air, the steam partial pressure increases, the air saturated state, as shown in the process of 1-s constant temperature is shown. Saturated, the steam partial pressure is the air temperature corresponding to the saturated vapor pressure ps. In addition, maintaining the partial pressure of steam in the wet air pv unchanged, reducing the wet air temperature, air can be saturated state, as shown in the process of constant pressure as shown in 1-d. Reached saturation point d such as wet air dew point, dew point temperature which is corresponding to the saturated steam temperature, partial pressure pv is called the dew point temperature of humid air, with the symbol Td said. 
 1807 times 
 Describe the parameters of moist air (a) [2008-11-15] 
 Abstract: Wet air contains water vapor content and its status in which many industrial processes and are usually the calculation of moist air concerns. To this end, in addition to the general description of the parameters of the mixture, it also introduces some new parameters and describes the concept of moist air. Symbols in the various parameters indicated in the subscript "v" indicates that the parameter is water vapor, "a" that are dry air, "s" parameter that is saturated water vapor, without the amount of feet that are the subject of wet air . 
 Figure (7-1) in the vapor state of moist air 
 Pv and saturated air absolute humidity: humid air is the absolute humidity of moist air per unit volume of water vapor contained in the quality of it is water vapor density pv. pv determine the wet air temperature T and partial pressure of water vapor in the pv. Under the first assumption, according to the ideal gas state equation, 
 (7-21) 
 Where Rg, v is the water vapor gas constant. Can be seen from the above equation, to a certain temperature,