Clean Room Hvac Design Pdf

Hvac design clean room make up air ahus.

Clean room hvac design pdf.

The cleanroom is positively pressurized to 0 05 in wc with respect to the adjacent areas. This is done by supplying more air and extracting less air from the room than is supplied to it. For example some regions in winter the hvac systems need to take the outside air at 22 f 30 c warm it up to 68 f 20 c remove the humidity and bring it into the room over and over. Schneider r designing cleanroom hvac systems ashrae journal v 43 no.

It offers an approachable technical perspective to designers builders owners and operators of cleanrooms. 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. Cleanroom design is a challenging field dominated by the need for high reliability maintenance of strict space cleanliness requirements life safety and narrow temperature. With a different purpose for each room type the standards and general hvac considerations that dictate the design of the local air distribution systems are also different.

The precision level required. Standard patient rooms the majority of patient care areas in a hospital are standard patient. 40 units each sized for 24 000 cfm. Last but certainly not least the degree of precision you need will also influence the design of the hvac system.

Unique design characteristics which clearly distinguish one type from another. Design must consider aspects such as control of particulate microbial electrostatic discharge gaseous contaminants airflow pattern control and pressurization and industrial engineering aspects. Iso dis 14644 1 cleanrooms and associated. 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.

What differentiates clean room hvac to conventional systems. The ashrae design guide for cleanrooms offers a practical comprehensive approach to cleanroom theories fundamentals performance control testing and industrial applications. 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.