[Bldg-sim] FW: e-quest-simulation error

[Steven Gates]

Consider a building with an air handler with a 54F supply temperature, and a
45F entering CHW temperature.  If the fan is draw through, and the fan heat
is 4F, then the temperature leaving the cooling coil must be 50F in order to
produce 54F downstream of the fan.  But 50F - 45F = 5F, which is a delta too
low for the coil curves to handle.  

 

To resolve, either raise your SYSTEM:MIN-SUPPLY-T, or lower the
CIRCULATION-LOOP:DESIGN-COOL-T

 

A version of the program currently in development will better resolve this
issue, but is not expected to be ready until late in the year.

 

Steve Gates

 

  _____  

From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Christopher
Sturdivant
Sent: Tuesday, March 25, 2008 5:07 AM
To: bldg-sim at lists.onebuilding.org
Subject: [Bldg-sim] FW: e-quest-simulation error

 

 

 

  _____  

From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Christopher
Sturdivant
Sent: Monday, March 24, 2008 11:55 AM
To: bldg-sim at lists.onebuilding.org
Subject: [Bldg-sim] e-quest-simulation error

 

Greetings,

I am attempting to run a simulation based on the building's performance but
every time that the simulation runs an error message pops up and cancels the
simulation.  The error message is "cooling coil leaving temperature must be
at least 6F higher than entering water temperature."  I am not sure where in
the program, equest, where you can manually enter the value for entering and
leaving water temperature across a cooling coil.

Thanks!

 

Christopher Sturdivant

Design Engineer-Mechanical

 

RMF Engineering, Inc.

Ph: 843-971-9639 ext. 110

Fax: 843-971-9641

csturdiv at rmf.com

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/bldg-sim-onebuilding.org/attachments/20080325/90e6d64d/attachment-0002.htm>