The precision level required.
Clean room hvac design guide.
A guide to hvac systems design.
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.
Supplying airflow in sufficient volume and cleanliness to support the cleanliness rating of the room.
The ashrae design guide for cleanrooms offers a practical comprehensive approach to cleanroom theories fundamentals performance control testing and industrial applications.
Learning points include standards and classifications p.
A cleanroom is a room or space in which the level of particulate contamination is controlled within set levels.
2 the hvac system the integrity of the cleanroom environment is created by the pressure differential compared with adjacent areas through heating ventilation and air conditioning system.
The first will discuss the fundamentals of cleanrooms and hvac systems design including the classifications of cleanrooms cleanroom iso standards design and testing guidelines by ashrae and nebb particulate sources from indoor and outdoor and their impacts on cleanroom air cleanliness.
Last but certainly not least the degree of precision you need will also influence the design of the hvac system.
40 units each sized for 24 000 cfm.
What is a cleanroom.
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.
A guide to cleanroom design.
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.
The above suggested air changes per hour are only a design rule of thumb.
Hvac design clean room make up air ahus.
They should be computed by an hvac cleanroom expert as many aspects must be taken into consideration such as the size of the room the number of people in the room the equipment in the room the processes involved the heat gain etc.
This course will consist of two segments.
Introducing air in a manner to prevent stagnant areas where particles could accumulate.
Wei sun president of engsysco covers a variety of topics in the cleanroom hvac design webinar.
It offers an approachable technical perspective to designers builders owners and operators of cleanrooms.
The construction temperature humidity air flow patterns and pressure are controlled in such a way as to minimise the introduction generation and.
Supplying airflow in sufficient volume and cleanliness to support the cleanliness rating of the room.
