In different types of processes, such as aging processes, validation testing, and/or plant growth research, precise humid airflow is often required to achieve specific ambient conditions in a test chamber. Today we have multiple solutions for these types of applications, one of them using controlled mixing and evaporation systems.
Small concentrations of moist air can be generated using an evaporation systems. This classic method requires optimal control of pressure and temperature. A complete evaporation level measurement systems, therefore, consists of a source of compressed air, a flow control valve, a dip tube associated with a pressure transmitter. The latter converts the drop in pressure in the tube into a measure of the drop in the level of the liquid and thus makes it possible to calculate the vapour flow. The quality of humid air depends entirely on the theoretical calculation of the degree of saturation of the air passing through the liquid and the accuracy of pressure regulation and temperature control. This conventional approach makes it difficult to achieve a specific value for humid air.
In addition to this approach, ASPL has developed a CEM controlled mixing and
evaporation systems that can be used for these applications. This evaporation systems is an
innovative vapor generation solution based on a liquid flow regulator ( LIQUI-FLOW or mini
CORI-FLOW ), a gas flow regulator, and a temperature-regulated mixing and evaporation
ASPL offers a more straightforward approach than conventional evaporation systems. The method employed is very simple, and, in theory, any concentration can be obtained in seconds with great precision and repeatedly. It is also possible to adjust the relative humidity from 5 to 95%.
The moisture content is precisely controlled by the liquid flow regulator, and the airflow can be adjusted by the gas flow regulator. On top of the systems, a mixing valve allows good atomization of water into the airflow. Due to the relatively low compression ratio of water vapor in the airflow, water can evaporate at low temperatures in the spiral heating tube at the outlet of the mixing valve.
Basically, our evaporation systems consists of the following:Evaporation System Manufacturer