I sent this e-mail a few weeks ago in hopes to validate the accuracy of the new equest 3.63. I have heard back about bugfixes you can place in your bdl code as well as a pending release. The only problem is the bug fix is for when your heating and fan energy is increasing. My gas usage is dropping when running my old file in the new equest. Has anyone heard anything else about any of the problems (bugs) with 3.63. I am honestly worried about switching over. Has anyone else still been running into these problems?
Your input had some relatively unique issues that we have resolved and will
be posting a new release shortly. Here is the summation of issues:
1. As identified below, the ZONE:HMIN-FLOW-RATIO was defaulting to the
SYSTEM level MIN-FLOW-RATIO rather than HMIN-FLOW-RATIO. In your input, you
specified SYSTEM:MIN-FLOW-RATIO = 0.8, but at each zone you specified
ZONE:MIN-FLOW-RATIO = 0.46. The zone HMIN-FLOW-RATIO was then defaulting to
0.8 rather than "no default", which would have then been set at the start of
the simulation to 0.46.
Interim solution: Don't specify the MIN-FLOW-RATIO at both the SYSTEM and
ZONE level; either is fine, both are not.
2. When the SYSTEM:SUPPLY-FLOW is specifed, and one or more
ZONE:ASSIGNED-FLOWs are also specified, the outside air requirement for that
zone was dropped from the summation of zone outside air requirements. This
causes the "OUTSIDE AIR RATIO" reported on SV-A to be less than it should
be, resulting in less heating energy.
Interim solution: Don't specify SUPPLY-FLOW and ASSIGNED-FLOW concurrently.
Or, don't specify any zonal outside air requirements, and instead specify
the SYSTEM:MIN-OUTSIDE-AIR
Steve Gates
I suppose what I was trying to ask was, would you trust this new version of e-quest??
Some of the changes that you guys are seeing could also be due to the new
DOE2 engine, especially if you had not updated it for a while.