Clean Room Hvac Design Pdf

Schneider r designing cleanroom hvac systems ashrae journal v 43 no.

Clean room hvac design pdf.

Design must consider aspects such as control of particulate microbial electrostatic discharge gaseous contaminants airflow pattern control and pressurization and industrial engineering aspects. The cleanroom is positively pressurized to 0 05 in wc with respect to the adjacent areas. Hvac design clean room make up air ahus. 100 outside air delivery to plenum temperature and humidity control of make up air 6 units each sized for 30 000 cfm make up air flow is 5 cfm sf or 25 ach.

Iso dis 14644 1 cleanrooms and associated. Hvac systems design fundamentals karachi pakistan february 22 2011 wei sun p e. November 1 2017. Clean room design encompasses much more than traditional temperature and humidity control.

It offers an approachable technical perspective to designers builders owners and operators of cleanrooms. Condition the space which must be determined by a qualified hvac engineer. 40 units each sized for 24 000 cfm. Cleanroom design is a challenging field dominated by the need for high reliability maintenance of strict space cleanliness requirements life safety and narrow temperature.

There is much more into the design of cleanrooms in terms of details of technology of. What differentiates clean room hvac to conventional systems. Heating ventilation air conditioning hvac. Ashrae clean spaces technical committee tc9 11 chairman 07 10 healthcare facilities technical committee tc9 6 member laboratory systems technical committee tc9 10 member iest working group cc012 cleanroom design chairman president.

Clean air flow out to lower pressure areas laminar flow moves particles to the air returns efficiently and quickly suppress contaminates cleaning maintenance daily weekly monthly hvac and filter maintenance materials equipment approved materials and equipment design protocols. Once the room acph re quirement is established the volume of air needed can be calculated desired acph 60 x room volume in cubic feet total airflow volume. This is done by supplying more air and extracting less air from the room than is supplied to it. May 1 2019 rev.