[Equest-users] Cooling/Heating Capacity Ratios - LEED Report?

[James Hess]

Same here regarding the screen shots, but I only provide if asked to specifically document something via review comments.  On every submitted project, however, I always upload the eQuest .inp and .pd2 files so that the reviewers can just open the files and look at whatever they need to.  That beats submitting reams of "input reports" which really isn't practical.  I'm assuming the reviewers know eQuest enough such that if they want to verify the Cool Sizing Ratio or Heat Sizing Ratio, they know exactly where to go in eQuest to find the answers, in a matter of seconds.  That seems like a pretty reasonable assumption to me.

Regards,

JAH

James A. Hess, PE, CEM, BEMP
Energy Engineer
TME, Inc.
Little Rock, AR
Mobile: (501) 351-4667

From: equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Neil Bulger
Sent: Wednesday, April 10, 2013 6:02 PM
To: Patrick J. O'Leary, Jr.
Cc: equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Cooling/Heating Capacity Ratios - LEED Report?

I second Patrick, typically I just provide screen grabs of the baseline model and send it off.


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On Wed, Apr 10, 2013 at 1:19 PM, Patrick J. O'Leary, Jr. <poleary1969 at gmail.com<mailto:poleary1969 at gmail.com>> wrote:
i typically just do screen caps when setting up my baseline model.  it's quick, painless, and makes mothers very happy ... and is done early ...

yeah, one would think there would be a details of hvac systems output report showing the direct inputs, but there's not.  unless you're good at creating custom reports & can create one that pulls input data from the hvac section?  if that's even data possible for equest to pull ...

or you could parse the info from the .sim file keying on just the = system name, heat-sizing-rati & cool-sizing-rati variables.

"PSZ-1" = SYSTEM
   TYPE             = PSZ
   HEAT-SOURCE      = FURNACE
   ZONE-HEAT-SOURCE = NONE
   BASEBOARD-SOURCE = NONE
   SIZING-RATIO     = 1.15
   HEAT-SIZING-RATI = 1.25
   COOL-SIZING-RATI = 1.15
  etc ........



On 4/10/13 1:04 PM, Nick Caton wrote:
Hi folks,

I have a seemingly simple LEED comment which has been causing me to chase my tail this afternoon.  I feel like this should be really easy to document in a crystal-clear fashion, but I must be missing something:

The Task:
Document with clarity that the baseline system cooling and heating capacities are using the 1.15 and 1.25 (respectively) capacity sizing ratios as prescribed in 90.1 Appendix G.

Intuitively, I have a sense we should be able to simply and directly reference one or a series of the *.SIM reports to substantiate the systems are oversized by the appropriate factors.  After spending some time digging through the reports and associated help documentation however, I'm empty-handed and do not think the actual ratio inputs (COOL-SIZING-RATI / HEAT-SIZING-RATI) are reported.

Further, I tried deriving the oversizing ratio between a system's annual PEAK  (re: report SS-P) and calculated system capacity (report SV-A) as reported... but the math doesn't quite work out!  It's the right ballpark, but I don't think I can write the difference off as a rounding error...

The Solution(?):
For now, I can just provide screen grabs illustrating the inputs in eQuest's spreadsheet view with relative ease, but if this is possible to document by assembling/referencing one or more additional reports for future models I'd prefer to adopt that in practice and avoid the same question down the road.  If I have some misunderstanding or new nuance to learn about the reports that would be worthwhile as well =).

Any suggestions/experience?

Thanks in advance!

~Nick


NICK CATON, P.E.
SENIOR ENGINEER

Smith & Boucher Engineers
25501 west valley parkway, suite 200
olathe, ks 66061
direct 913.344.0036<tel:913.344.0036>
fax 913.345.0617<tel:913.345.0617>
www.smithboucher.com<http://www.smithboucher.com>



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