I have the manual, I am aware of the laminar diffusers that have to be mounted over the operating area. But the problem is the concrete ceiling height of 2.75m (9 foot), which is too low for an op room. Also the doctors don't want them over their heads and the lights are already mounted on the...
I agree with nuuvox, you realistically can not accurately calculate that, you can just pump slightly more cfm into the building then you pull out. Here is a thread about the equation https://www.eng-tips.com/viewthread.cfm?qid=31557
If you want to accurately balance differential pressure at a...
Punk_hvac if I understood your question corectly: if, in a space, supply airflow [cfm] > return airflow [cfm] then you've got positive pressure and if supply airflow [cfm] < return airflow [cfm] then negative pressure. The calculation you can find on this forum.
Thank you colleges for your input!
@goutam_freelance I will try Fluent and will consider the high positioned outlets (at about 25% of return airflow). I will put the simulation results here.
@BronYrAur I understand your question and to answer it- the doctors want the RH to be in the range...
Thx for the readings, so that is the problem, the height, so the laminar flow diffusers can not be mounted. There just isn't enough space, but to mount the supply onto that wall. I found HEPAs can take about 0.5m/s. I will try using Comsole.
Immsk, thank you for the fast reply!
According to the standard I must use high positioned supply and, at least two low positioned returns because contaminated particles must travel downwards toward the low returns.
Regarding the air mixing, I did not write about that, but- it would be a plus if...
Hi to all,
I am new to the forum, but reading it for quite a while.
I was lucky enough to get a project for HVAC of an operating room for eye surgery, so I am writing to get some advice if possible 😊
It is rather on the small side with ceiling (no false ceiling) at 2.75m, length 5.7m and width...
