A clean room is an airtight space where air cleanliness, temperature, humidity, pressure, noise and other parameters are controlled as needed. The environmental requirements of the precision machinery industry, semiconductor industry, etc. have contributed to the development of cleanroom technology.
Relative humidity is one of the condition parameters for measuring cleanroom class standards. In fact, some applications specify a deviation of as little as 1% RH due to the effect of relative humidity on material processing and storage from a physical/chemical point of view.
Bacteria and other biological contaminants (molds, viruses, fungi, mites) can actively multiply in environments with RH above 60%, and there are even some flora that can grow at RH above 30%. Controlling the relative humidity of a cleanroom between 40% and 60% effectively controls the growth of bacteria and other organisms and reduces their impact.
In addition to inhibiting the growth of various microorganisms, temperature and humidity control can to some extent prevent various chemical reactions or change the rate of reaction, such as corrosion, will be accelerated as the relative humidity increases. RH at 50% is susceptible to rusting. Conversely, some metals, such as aluminum, can form a protective oxide with water, but this is not a good thing as it may prevent further oxidation and affect efficiency.
The development of cleanrooms is closely linked to modern industry and cutting-edge technology. Humidity control is not as low as it should be. When relative humidity is less than 30%, static charges can persist on insulators or ungrounded surfaces for a long time. Lower humidity levels tend to cause charges to build up and become a potentially damaging source of electrostatic discharge. When relative humidity exceeds 50%, static charges begin to dissipate rapidly. High humidity actually reduces static charge buildup, which is the desired result.
The temperature and humidity of the clean room is mainly determined according to the process requirements, but under the condition of meeting the process requirements, the sense of human comfort should be taken into account. Excessive humidity will make people feel stuffy, while humidity below 30% RH will make people feel dry, chapped skin, respiratory discomfort as well as emotional discomfort.
parkoo dehumidifiers provide a complete solution to accurately set the temperature and humidity of a clean room according to different process requirements. Simple operation, high efficiency, wide range of temperature and humidity control, high precision humidity control ±1%RH, easily meet the needs of different processes on the temperature and humidity of the cleanroom.
