[Equest-users] CHW/HW Reversible Chillers & GLHX (UNCLASSIFIED)

[Eurek, John S NWO]

Classification: UNCLASSIFIED
Caveats: NONE

This sounds like Trane's Central Geothermal System, also called a cascading
system.  Look up Trane sys-apm009-en.  I know there is a way to model it in
trane trace, if you read through the trace instruction, you may be able to
use a similar approach in equest.

-----Original Message-----
From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Eric
Hethcoat
Sent: Tuesday, September 13, 2011 12:06 PM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] CHW/HW Reversible Chillers & GLHX

Trying to model a reversible chiller scenario.  Any help is appreciated.
 
Will have (2) chillers - 1 dedicated for a CHW loop on load side and the
other for a HW loop on the load side.  The chillers will be piped into a
vertical well ground loop for the condenser side.
 
The CHW loop will serve a few small CHW coils in single zone AHUs.  
 
The HW loop will serve the HW coils in the same AHUs, but also a HW radiant
slab heating system and several heat recovery units (heating only).  The HW
chiller is meant to serve as a preheater to the HW loop as the temp will
peter out at 130 (max), while any remaining heat would be provided by a set
of condensing boilers that will maintain the HW loop at 150.  
 
I've set up a loop to loop heat pump with the condenser loop to the lake/well
option, attached to the CHW loop and attached to the HW loop.  It runs with
fatal errors and brings me back to the input screens.  
 
Thoughts?
 
Eric

Classification: UNCLASSIFIED
Caveats: NONE