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HVAC for Cleanrooms
HVAC stands for Heating, Ventilation and Air Conditioning. It is a general term for indoor environmental comfort, which creates indoor air quality (air change per hour, CFM, temperature and humidity).
When it comes to clean rooms, HVAC means a lot more than comfort. The cleanroom HVAC controls the temperature and the humidity to your appropriate levels of precision, similar to standard HVAC. In addition to comfort, cleanroom HVACs differentiate themselves from conventional systems with their increased air supply, airflow patterns, use of high efficiency filters and room pressurisation. The increased air supply brings more air changes per hour with new HEPA filtered air circulating into the cleanroom many times per hour.
Clean room HVAC designs involve knowledge of regulations, cleanliness level guidelines, airflow, room pressurisation, temperature control, humidity control and accounting of activities taking place inside.
Don’t worry, our cleanroom experts do.
Whether you need temperature/humidity control precision, specific air flow, have space constraints, or any other specific requirements, let Mecart design your air handling unit to meet your specifications.
FFUs are an alternative to HVAC systems in a less stringent class of clean rooms. FFUs are often used in projects with height restrictions, rather than HVAC systems where the installation of makeup air ducts and recirculating air needed require much more space. FFU configuration is often a cost effective option, if you don’t need to cool your room (low heat gain), since it uses the air directly from the main building. This eliminates the need for a second ceiling above your cleanroom to create a plenum.
Generally, FFUs cannot create pressure head as strong as the air handling unit (AHU) and build a cascade of positive pressure. Another thing to consider is the noise generated by the fan inside the FFUs (just above your head). For large cleanrooms with many FFUs, this noise can become an issue.
Our in-house acoustical specialist can simulate FFUs usage to help you select the most appropriate option for your clean room project.