Modelling Chillers separately for night time

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There has been a case in which i have to model 4 chillers.3 chillers are
for day time operation for entire building.At night time the chiller 4
(screw chiller) has to run for 5 zones in the building (and not for entire
building).The other three chillers have to be off during night time.Can
anyone tell me the ways to model this in eQuest.

Regards

Rahul

rahul yadav's picture
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Rahul,

You can try with creating 2 loop, 3 chiller with day Loop & 4th chiller another loop called night, than we can modulate the fans schedule with respect to the operation of chiller, for more detail see screen shot below.

[cid:image002.jpg at 01CDD23B.98DD8450][cid:image006.jpg at 01CDD23B.98DD8450]

Regards
Soham babu

Soham Babu's picture
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But, the how can i link the 5 air side zones to two loops.At a time the
eQuest allows to link to only one loop.So,how can i make the same zones to
work on different loops (in day and night time)

rahul yadav's picture
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Why can't you try by creating dummy zones as usually do for 2 system serving in same zone example : FCU & DOAS.

Soham Babu's picture
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I have modelled all chillers in one loop .Now i am trying to use Load
Management and Equipment Control techniques (defined in water side in
eQuest) to divide the load for day and night time.Can you tell me if this
is possible ?

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