[Equest-users] Fwd: hope you can help me

[haissam mahmoud]

 dear equesters

i am trying to simulate a hise rise building  with connection to main
district cooling plant


I could get the here under information on the district cooling plant:

- type of refrigerants and their quantity:

The estimated refrigerant charge per chiller is 3,472 kgs (or) 6,944 per
each set of series counter flow chillers.

Total charge for 11 sets would be 76,348 kgs.

Refrigerant used for the proposed chillers is 134a.

our bluilding is getting the required chilled water from this plant through
3 levels of heat exchangers

(primary,secondary and tertiary) and i dont know how to model all this
issue!!

thanks for your help

Haissam



On Sat, Dec 5, 2009 at 12:54 AM, Nick Caton <ncaton at smithboucher.com> wrote:

>  Haissam,
>
>
>
> I’m going to give a shot at answering to a degree that you can figure out
> the rest by searching the archives for related discussions on each topic.
>  When I say “search terms” it’s a heads up to try those terms to find a lot
> more information there.
>
>
>
> That said, archives are here if you haven’t already bookmark/favorite’ed
> them:
>
> http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/
>
> http://lists.onebuilding.org/pipermail/bldg-sim-onebuilding.org/
>
>
>
> Also, I feel I must preface, as always, that I don’t have all the answers.
> My responses are shaped only by my own experience/education, so don’t
> hesitate to pursue further if you feel I might be missing something.  I also
> welcome as always any corrections/additions to my responses from others on
> the list.
>
>
>
> 1-how to simulate the central chilled water plant?
>
> This question isn’t complete enough to effectively answer, imho.  I haven’t
> a lot of experience with campus/central steam/chilled water/hot water (all
> recommended search terms), but I do understand how you handle this depends
> quite a lot on whether this is a LEED project, you’re simply trying to
> match/compare against an ASHRAE 90.1 standard, or are more basically
> attempting to model actual plant behavior for auditive/academic purposes.  I
> think others will need to answer this question ultimately, but I think
> you’ll first need to clarify the context of your project and which design
> standards you are modeling around, if any.  It wouldn’t hurt to describe
> this central plant further either ;).
>
>
>
> 2-does equest have any library for ASHRAE 90.1 values to make a
>
> baseline than compare it to the results?
>
> eQuest does not have a library of 90.1 baseline HVAC
> equipment/constructions (this is a feature I’ve requested to be considered
> for future versions) – to build the baseline model you need to browse
> through 90.1 and enter all of the appropriate inputs.
>
>
>
> 3-how can I simulate the lighting controls,such as lighting fixtures
>
> controlled by motion sensors?
>
> Motion sensors, in the context of 90.1 baseline comparisons, are accounted
> for by taking a percentage away from the LPD.  Refer to the corresponding
> table in Appendix G.  Other lighting controls beyond baseline requirements
> may be accounted for through custom scheduling, but read Appendix G’s
> wording carefully regarding what must remain the same between the two models
> to avoid opening a can of worms.
>
>
>
> 4-how to  enter the elevators and escalators loads?.
>
> This are covered extensively in the archives.  They’re interior direct
> loads you assign with a schedule to your electric meter in detailed mode.
>
> (Search terms: elevator, schedules)
>
>
>
> 5-how to model the solar loads gain in the reduction of domestic hot
>
> water calculations?
>
> Solar hot water is not directly model-able in eQuest, but you can account
> for it after modeling the savings/output of a solard DOMHW system using
> other software.  I’ve seen repeated reference to the free Canadian RETScreen
> tools for this task: http://www.retscreen.net/  I’d caution that RETScreen
> is a lot more complex than it may appear at first (looks like just another
> excel spreadsheet).
>
>
>
> 6-how to impose type of heat recovery to the airhandling unit?such as
>
> total enthalpy fly wheel ?
>
> Enthalpy wheels and other forms of energy recovery are defined in detailed
> mode.  Click on “Airside Systems” tab, select the unit in question, and find
> the energy recovery options under the outdoor air tab.
>
>
>
> 7-why all edits made in the detailed interface mode are not saved in
>
> the DD wizard?what shall I do to keep these changes?
>
> Thou shalt perform all wizard edits before moving into detailed mode!
> That’s pretty much the sum of it.  There’s nothing in wizards you cannot
> define/edit in detailed mode, rest assured, but it can be a real time saver
> to fully utilize the wizard screens.  This is something that is always
> tricky at first in your earlier projects (you’ll come around to better
> understand what can and can’t be defined before detailed mode as you get
> experience behind the eQuest wheel), but best advice is to scour all wizard
> screens to ensure you’ve defined all that you can before hitting “detailed
> mode.”
>
>
>
> 8-can you provide me with a hot line(if existing)for  any urgent
>
> question I may encounter regarding equest items?
>
> To my knowledge there is no such tech support line, but you’re not alone!
> For the moment, I’d advise reading my lengthy response to a similar call for
> help that includes the places where you can find support for this program
> here:
> http://lists.onebuilding.org/htdig.cgi/equest-users-onebuilding.org/2009-November/002534.html
> These mailing lists are of course the most “human” support you can find,
> but may not be the fastest – do learn to lean heavily on the eQuest/DOE2
> help files (which are admittedly not as intuitively located as they could
> be) for fast answers =)!
>
>
>
> 9-is there is any soon training sessions in the middle east region?
>
> Best addressed by others – I’m not involved in organizing these…
>
>
>
> Best of luck!
>
>
>
> POST EDIT:  I see on a search that I may be responding to a double-post and
> you may have already been helped sufficiently, but heck I’ve already written
> this up so here ya go =).  Do please avoid double-posting and/or changing
> the subject line as it can make it confusing for those of us contributing
> with responses.  Also I’m happy to see I’ve managed to contribute help to
> 100% of your projects so far through the lists ^_^.
>
>
>
> ~Nick
>
>
>
> [image: cid:489575314 at 22072009-0ABB]**
>
> * *
>
> *NICK CATON, E.I.T.***
>
> PROJECT ENGINEER
>
> 25501 west valley parkway
>
> olathe ks 66061
>
> direct 913 344.0036
>
> fax 913 345.0617
>
> *Check out our new web-site @ *www.smithboucher.com* *
>
>
>
> -----Original Message-----
> From: equest-users-bounces at lists.onebuilding.org [mailto:
> equest-users-bounces at lists.onebuilding.org] On Behalf Of haissam mahmoud
>  Sent: Friday, December 04, 2009 1:22 PM
> To: equest-users at lists.onebuilding.org
> Subject: [Equest-users] hope you can help me
>
>
>
> Dear  equesters
>
> This is my second trial in equest,I am using the detailed  design
>
> wizard to make the energy simulation
>
> of a high rise building.
>
> The main cooling source for the building is a central chilled water
>
> plant feeding also other buildings in the same area.
>
> I almost finished data entering for the building but I am facing few
>
> problems and I hope you can help me solve them the soonest possible
>
> 1-how to simulate the central chilled water plant?
>
> 2-does equest have any library for ASHRAE 90.1 values to make a
>
> baseline than compare it to the results?
>
> 3-how can I simulate the lighting controls,such as lighting fixtures
>
> controlled by motion sensors?
>
> 4-how to  enter the elevators and escalators loads?
>
> 5-how to model the solar loads gain in the reduction of domestic hot
>
> water calculations?
>
> 6-how to impose type of heat recovery to the airhandling unit?such as
>
> total enthalpy fly wheel ?
>
> 7-why all edits made in the detailed interface mode are not saved in
>
> the DD wizard?what shall I do to keep these changes?
>
> 8-can you provide me with a hot line(if existing)for  any urgent
>
> question I may encounter regarding equest items?
>
> 9-is there is any soon training sessions in the middle east region?
>
>
>
> b.regards
>
> Haissam al Mahmoud
>
> LEED AP
>
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>
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>
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