Room conditions form the basis for the technical design. Clean room is merely a collective term for clean spaces where fine dust and/or sterility play a key role.
Each sector has specific requirements. A rough classification can be made by distinguishing between dead and living matter. Microorganisms in a sterile clean room mainly require frequent cleaning and the use of the right inert materials. In the chip industry, fine dust determines the classification of a space, and for living matter, it is often the means of transport for fungi, bacteria, etc.
Clean room is a collective term for all kinds of clean, but also heavily contaminated rooms, where the exact particle size per volume unit is known. Dirty or clean and dead or alive.
Temperature and relative humidity influence material properties and the growth of microorganisms. With a good filter cascade and sufficient circulation, fine dust is a stable factor.
What determines the right conditions in a space? A question with a wide variety of answers. Such as sector requirements. The material properties of the product or the criteria of your customer/client.
An example, starting points
- filter cascade Coarse, Fine, and HEPA
- room temperature in the cleanroom 19 +/- 1 °C (due to cleanroom attire)
- starting point building environment, maximum temperature in the building at approx. 4 m1 above the be concrete floor 25 °C +/- 10
- total air circulation from the air handling unit comes from the industrial hall
- outside air conditions in winter -15 °C/90%, return conditions in winter 19.5 °C/50%
- outdoor air condition in summer 35 °C/55%, return condition summer 21.5 °C/52%
- relative humidity in the cleanroom 50% +/- 10%, when the cleanroom is in continuous operation
- humidification capacity, to be determined kg/hour
- Internal heat load, to be specified by client
- Cooling section, to be worked out in more detail kW, water 6–12 °C
- Heat pump, after-heater, to be worked out in more detail kW.