Load Reports

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Good morning guys,

After I ran the simulation for the building I am working on I found the
chiller size and plant loads does not match in reports PS-C and PV-A the
difference is almost double is that normal? Also when I try to input the
chiller capacity in detailed mode the results in the reports does not
change is there a way to fix this?

Thank you,

Saif

via Equest-users's picture
Joined: 2016-07-15
Reputation: 400

Hi Saif,

I will like to mention that PS-C is equipment load reports and PV-A is
chiller plant design parameters based cooling capacity. So if there is some
relation then there can be some connections in hours to be multiplied with
the equipment loads to get the cooling capacity of the plant loads as the
units are in MBtu and MBtuh.

But the real PV-A report analyses is like it is the auto-sized parameter
based and with the input of flow and the temperature difference of cooling
plant configuration based cooling capacity, the cooling capacity is
determined. The formula can be 500 X GPM X delta T. GPM is the cooling
plant water flow and delta T is loop design temperature difference. The
default temperature difference is 10 ?F.

I don't have any sort-ful idea of PS-C analyses.It can be TR of the
chillers.

*Thanks,*
Sharad.

---------- Forwarded message ----------
From: Saif A via Equest-users
To: equest-users at lists.onebuilding.org
Cc:
Date: Mon, 15 Aug 2016 10:56:20 -0500
Subject: [Equest-users] Load Reports
Good morning guys,

After I ran the simulation for the building I am working on I found the
chiller size and plant loads does not match in reports PS-C and PV-A the
difference is almost double is that normal? Also when I try to input the
chiller capacity in detailed mode the results in the reports does not
change is there a way to fix this?

Thank you,

Saif

via Equest-users's picture
Joined: 2016-07-15
Reputation: 400

what I am looking at in the PS-C report is the peak load which
is 2852.1 KBTU/HR, while the chiller size in the PV-A report is 5.09
MBTU/HR for some reason eQUEST is over sizing the chiller capacity by two
times. Also it does not allow me to input the chiller capacity manually in
the detailed mode.

Thank you,
Saif

via Equest-users's picture
Joined: 2016-07-15
Reputation: 400

Sir:
If you could send us you .INP and .PD2, perhaps we could resolve something for you. The Professionals of this Forum do not "steal" models and understand confidentiality. We merely wish to help each other.
John R. Aulbach, PE

what I am looking at in the PS-C report is the peak load which is?2852.1?KBTU/HR, while the chiller size in the PV-A report is 5.09 MBTU/HR for some reason eQUEST is over sizing the chiller capacity by two times. Also it does not allow me to input the chiller capacity manually in the detailed mode.
Thank you,Saif

via Equest-users's picture
Joined: 2016-07-15
Reputation: 400

Please find attached the .inp and .pd2 files for the model I am having
problems with.

Thank you,

Saif

via Equest-users's picture
Joined: 2016-07-15
Reputation: 400