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FYI… Simulating different HVAC systems is non-trivial! ASHRAE RP-865 also has HVAC system diagrams for the accuracy tests that Standard 140 is now assembling for
future reference. Comparisons to DOE-2, BLAST and EnergyPlus have also been run on these as well (+- 1%). Spreadsheet simulations for these systems, and input files can also
be found in the ESL report ESL-TR-01-02-02, which is a report and ZIP file containing the spreadsheets, available on the ESL’s web site. Jeff 8=! 8=) :=) 8=) ;=) 8=) 8=( 8=) 8=() 8=) 8=| 8=) :=') 8=)8=? From: bldg-sim-bounces@xxxxxxxxxxxxxxxxxxxxx [mailto:bldg-sim-bounces@xxxxxxxxxxxxxxxxxxxxx]
On Behalf Of Luis Miguel Blanes Restoy
2012/6/7 Chris Yates <chris.malcolm.yates@xxxxxxxxx> If you are familiar with AutoCAD for drawing schematics then you will be able to use Draftsight from Dassault systems. It's free. Sorry for cross-posting, Does anyone use MS Visio for sketching HVAC diagrams? Is it a good alternative to Ms Word, which is somehow tolerable for simple diagrams, but gets really out of hands for bigger diagrams? The shapes, which are included in Visio, are they helpful, meaningful, give professional look? Somebody is using Excel (might be lacking flexibility when topology is unknown). Somebody is using Inkscape. Thank you, Pavel Dybskiy On Mon, Jun 4, 2012 at 6:53 PM, Jim Dirkes <jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote: No “tool” Pavel, just Excel with formatted cells and arrows – pretty unsophisticated, but easier (I think) than learning Inkscape.
I know of others using Inkscape, however, and it looks like a very capable tool.
The Building Performance Team From:
EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx]
On Behalf Of Pavel Dybskiy
Hi Jim, What tool do you use to draw your diagram? Dear List, I'm wondering if you can share your thoughts on your favorite tool to draft efficiently such diagrams. Is there anything better than pencil and paper? Thanks, Paul On Mon, Jun 4, 2012 at 2:10 PM, Jim Dirkes <jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote: Dear Forum, The schematic I have attached is a common boiler plant piping configuration in my experience, using an individual constant speed pump for each boiler, plus a variable speed distribution
pump. Officially it’s a “primary – secondary pumping loop”. I cannot make the primary pumps shut off when the corresponding boiler is inactive. Has anyone successfully modeled this configuration? Do you know of an example file with this
configuration? Thanks in advance. Making me think…. Why is it? We routinely use miracles of creativity and technology that 50-100 years ago would be considered impossible or black magic … and also
assume that whole segments of society are incapable of helping themselves or acting intelligently. Is it a self-fulfilling expectation?
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