View Full Version : control strategies
11-16-2008, 11:01 PM
There is obviousley alot of talent in this forum but the content is is always geared toward whats better lon or bacnet and mapping points and Lns the nuts and bolts stuff. I dont think that I've seen any discussion about demand ventelation or critical zone reset or any green building strategies . Am I possibly looking in the wrong forum or is it that nobody wants to discuss or even cares about these sorts of things?I thought that the purpose of these forums was to discuss and compare and try to develop new ideas or improve ideas we may have not just point out that we don't like some manufacturers product or we do like another. I may be out of line and I hope nobody takes offense to this because it isn't directed towards anybody.
11-17-2008, 10:04 AM
I've seen lots of discussion here about control strategies, but it's typically only when there is a person asking a particular question about it. More people are probably affected by the physical stuff as opposed to the virtual, hence all the discussion of LON, wiring, etc.
It seems there was an in-depth discussion that touched on duct pressure reset a little while back. It was very interesting.
11-17-2008, 10:23 AM
My suggestion would be to ask a question. I looked to see what posts you have started and see none related to the queries you proposed. Pull the trigger, Lord knows I aint scared. hehehe. I will ask anything.:)
11-17-2008, 01:10 PM
Control and energy strategies are very much a part of this section but as stated by another poster any topic up for discussion depends upon someone asking a question or getting such a discussion started.
Ask away and you will probably get lots of input. I teach an entire week (40-hour) class on control strategies for Johnson Controls and would be glad to participate.
11-17-2008, 04:21 PM
You should read more posts - there have been discussions on duct pressure reset based on terminal loads, there have been discussions on helping a guy in an art museum control the humidity with night setback, there have been discussions on building pressure control, there have been many more. Like smokeout said - start the discussion, or do a search. To give you some credit though there are more discussions on workarounds or specific control systems and not 'general' control strategies. BTW - someone at least will refer you to the Honeywell Gray Manual. :D
11-17-2008, 05:04 PM
I remember once upon a time not that long ago gathering information for teaching a bunch of engineers on the topic you have brought up "Control Strategies" here :rolleyes:
Ask away :D
11-18-2008, 12:59 PM
I'm still kinda new to the forums and the site so I'll keep my eyes and ears open I've not done alot with LNS so alot of this stuff is foreign to me (work for trane) but I do enjoy reading the posts. One strategy in particular is flattening out your fan curve on a delivered air system. the way I've been doing it is to look at the position of my air valves and run a calculation to reset my discharge air pressure by .1 until all my boxes are between 50% and 80% and start increasing by .1 when any box goes above 80%. works well most of the time others not so well. How are some of you guys doing it or do you even bother
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