[Equest-users] Chiller Staging

[Chris Jones]

I don't have a chiller project handy but I quickly, and poorly 
created an example boiler load management schedule.  The building has 
three boilers, each sized at 0.23 MBH.

"Equipment Control 1" = EQUIP-CTRL
    TYPE             = HEATING
    CIRCULATION-LOOP = "Hot Water Loop"
    LOADS-THRU-1     = 0.23
    LOADS-THRU-2     = 0.4
    LOADS-THRU-3     = 999
    BOILERS-1        = ( "Boiler1", "Boiler2" )
    BOILERS-2        = ( "Boiler 3", "Boiler2" )
    BOILERS-3        = ( "Boiler2", "Boiler1", "Boiler 3" )
    MAX-LOAD-1       = ( 0.15, 0.14 )
    MAX-LOAD-2       = ( 0.2, 0.21 )
    MAX-LOAD-3       = ( 0.22, 0.22, 0.22 )
    ..

As you can see, I have boilers coming on and off with little thought 
to over lapping.  Boiler 2 is on for all three stages.
The interface allows for five stages with up to 10 pieces of 
equipment defined in each stage.  I am not sure if that covers your 
requirements.


At 11:25 AM 08/05/2012, Janne Kairento wrote:
>Content-Language: en-US
>Content-Type: multipart/alternative;
> 
>boundary="_000_E5A7104ECDC89A42975CEB90789258B6052D07E98541B2QSE01b2ql_"
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>Hello,
>
>I have building with 6 chillers (2 different capacities) and I would 
>like to model them with 14 stages of operation.  How can I 
>independently control the increment (add chiller) and decrement 
>(stop lag chiller) of an individual chiller stage. I was using 
>equipment control, however, the saw tooth approach does not account 
>for the overlap of plant stages. Thank you for your time.
>
>Regards,
>
>Janne Kairento LEED AP, EIT
>Designer
>B2Q Associates, Inc.
>146 Main Street
>North Andover, MA 01845
>Office: 978.208.0609 x209
>Fax: 978.719.6339
>Mobile: 978.210.7397
><http://www.b2qassociates.com/>www.b2qassociates.com
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 >>
Christopher Jones, P.Eng.
Suite 1801, 1 Yonge Street
Toronto, ON M5E1W7
Tel. 416-203-7465
Fax. 416-946-1005
email cj at enersave.ca
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