[Equest-users] Waterside Economizer

[Jeremy McClanathan]

You can create a water economizer in your plant.  Create a new chiller of type "water economizer".

Jeremy
___________________________________________

Jeremy McClanathan, LEED(r) AP
CDi ENGINEERS
4200 194th St SW, Ste 200, Lynnwood, WA 98036
P 425-672-1071 | F 425-778-8769
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From: Greg Collins [mailto:GCollins at glumac.com]
Sent: Wednesday, June 02, 2010 9:00 AM
To: Charles Land
Cc: equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Waterside Economizer

Charles,

I haven't done this myself, but have an idea that you might try..  Set up your chilled water loops so that the chiller and heat exchangers are in parallel.  Then, set up equipment control with a schedule so that the chiller is disabled and the heat exchanger enabled when the outside air conditions are suitable.  You may have to put the hourly ourside air dry bulb/ wet bulbs temps in Excel to crunch and figure out the schedule.

Again, I haven't had to do this before so there may very well be a simpler approach to modeling a waterside economizer, but I think this would work.   Let me know how you make out.

Greg Collins
GLUMAC | (949) 833-8190

From: Charles Land [mailto:cland at geo-marine.com]
Sent: Wednesday, June 02, 2010 8:26 AM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Waterside Economizer

Does anyone know a way to do waterside economization other than through the airside tabs.  The building I'm currently modeling has older multizone systems with a water to water heat exchanger for waterside economization.  Equest does not give the option for waterside economization for multizone units.  I thought there may be a way to create a heat exchanger and accomplish this through a water side route but have so far been unsuccessful.



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