[Equest-users] eQUEST electric heat recovery chillers

[Cam Fitzgerald]

Hello, All:

 

I am modeling a large hospital with Electric Heat Recovery chillers to
preheat the domestic hot water, but when I change  the chillers to open
centrifugal without the heat recovery, the domestic hot water gas
consumption is identical to that with the recovery.  I also am unsure of
how to set up the preheat loop for the DHW since it is does not appear
that you can model a primary/secondary arrangement when the loop type is
DHW, but the heat recovery cannot provide 140 deg. F DHW w/ condenser
water temperatures of 85 to 95 deg F.

 

I also have a water-side economizer and although the cooling energy
consumption increases by about 1,500 MBtu when I use standard
centrifugal chillers, I am not convinced this is realistic.

 

I have attached the inp and pd2 files just in case and would appreciate
any insights and suggestions.  Thanks in advance and have a great day!

 

Cam S. Fitzgerald, PE, LEED(r) AP

Energy Opportunities, LLC

a 7group company

phone:  (717) 292-2636 x11

fax:  (717) 292-0585

e-mail:  fitzgerald at sevengroup.com <mailto:fitzgerald at sevengroup.com> 

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20090127/b4fc37f1/attachment.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: CHS- Prop final Draft 1-26-09.zip
Type: application/x-zip-compressed
Size: 104957 bytes
Desc: CHS- Prop final Draft 1-26-09.zip
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20090127/b4fc37f1/attachment.bin>