[Equest-users] Thermal Storage Control

[Otto Schwieterman]

You may want to upload your .inp and .pd2 file. There are a lot of
people on the list with experience who may be able to help if you upload
the eQUEST files.

 

Also, make sure that the capacity inputs for the ice storage tank are
correct. 

 

From: Esmireta [mailto:e2fye2 at 163.com] 
Sent: Tuesday, November 06, 2012 11:49 AM
To: Matthew W. Higgins
Cc: Otto Schwieterman; Jiao, Joey; Equest-users at lists.onebuilding.org
Subject: Re:Re: [Equest-users] Thermal Storage Control

 

Hi Matthew,

Do you mean that if I would like to use the equipment control and load
management to set the charging and discharging schedule, I must set a
dummy coil in the charging loop?

My simulation does not work, so I set a dummy coil, it seems still not
working.

I'd like to have your opinion.

thanks

Es





At 2012-03-09 06:26:58,"Matthew W. Higgins" <MWHiggins at bpce.com> wrote:



This is the methodology I typically use, but I have been playing with
the idea of separate charge and discharges loops, with an availability
schedule on the charge loop. The only caveat to this is the need for a
dummy coil to be placed on the charge loop, otherwise that loop won't
flow. I can't remember if I was happy with this or not, but have
predominantly used what Otto illustrated.

 

Either way I would suggest verifying with hourly reports and tweaking
the FLAG schedule to make sure the hourly wiggles the way you want it
to.

 

Matthew Higgins, CEM, HBDP, LEED-AP (BD+C) 

Energy Project Manager

 

Bridgers & Paxton Consulting Engineers, Inc.

4600-C Montgomery Blvd. NE

Albuquerque, NM  87109

505-883-4111

505-888-1436  Fax

mwhiggins at bpce.com 

 

www.bpce.com

 

 

 

From: equest-users-bounces at lists.onebuilding.org [mailto:
equest-users-bounces at lists.onebuilding.org] On Behalf Of Otto
Schwieterman
Sent: Thursday, March 08, 2012 2:45 PM
To: Jiao, Joey; Equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Thermal Storage Control

 

Joey,

 

When I model thermal storage, I typically set up equipment controls to
control when the Ice tank will be charging and discharging. In the
discharge sequence, if you set the chiller to sequence 2, the ice
storage tank will be discharged first. At the bottom of the equipment
controls screen, you can input the correct thermal storage information.

 

After I create the equipment controls, I typically create a load
management for the cooling equipment which tells the equipment when to
charge and when to discharge. You will have to create a FLAG schedule
for the load management equipment control.

 

If anyone has a better or more detailed technique of modeling thermal
storage please add to the conversation. 

 

 

 

 

 

 

 

 

 

 

From: Jiao, Joey [mailto:Joey.Jiao at WSPGroup.com.cn] 
Sent: Thursday, March 08, 2012 6:04 AM
To: Equest-users at lists.onebuilding.org
Subject: [Equest-users] Thermal Storage Control

 

Hi, everyone :

When I finished a thermal storage system, I found the thermal Storage
can't be control by "Equipment control" list. Like the illustration
below, the list only content Chillers on the loops. 

What I want is to make sure the Thermal Storage energy should be used by
control, at most of the cases it should be used first, but on the
warmest day , It should be used at 3~5PM to prevent the main chiller
can't deal with the cooling load.

Who can take some light on this ? Any suggestion should be appreciated.

 

Thank you very much.

Joey.

  

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