[Equest-users] Can we reference DESIGN-DAY inputs in zonal expressions?

[Bishop, Bill via Equest-users]

Hi Nick,
I haven't figured out a way to reference DESIGN-DAY keywords from outside of the command. The DESIGN-DAYs are not global parameters (so you can't use #G), and they do not have children that can reference them as parents. You could create global parameters per your own suggestion below.
An alternative is to reference other climate data inputs for your DESIGN-COOL-T and DESIGN-HEAT-T zone keywords.
For example, you could enter the monthly ground temperatures. Then, say you want the unconditioned zone DESIGN-HEAT-T to match the December ground temperature:
if(#RV(#G("SITE-PARAMETERS","GROUND-T",11))==0)
  then #G("SITE-PARAMETERS","GROUND-T",11)
  else 70 endif

Regards,
~Bill

William Bishop, PE, BEMP, BEAP, CEM, LEED AP | Pathfinder Engineers & Architects LLP
Senior Energy Engineer

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From: Equest-users [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Nicholas Caton via Equest-users
Sent: Thursday, September 07, 2017 11:59 AM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Can we reference DESIGN-DAY inputs in zonal expressions?

Hi friends!

Is fundamentally possible to, from within a user-expression, pull a value from cooling / heating DESIGN-DAY inputs?

In particular, I'd like to return DRYBULB-HIGH from both my cooling and heating DESIGN-DAY, using those values to inform zonal DESIGN-COOL-T and DESIGN-HEAT-T for unconditioned and plenum zones.  I can see a path to have both DESIGN-DAY and zonal inputs reference a pair of global parameters, but I'm making every effort to minimize "#PA spam" in my regular model development.

~Nick

[cid:image009.png at 01D327EB.5D9B6820]
Nick Caton, P.E., BEMP
  Senior Energy Engineer
  Regional Energy Engineering Manager
  Energy and Sustainability Services
  Schneider Electric

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M  785.410.3317
F  913.564.6380
E  nicholas.caton at schneider-electric.com<mailto:nicholas.caton at schneider-electric.com>

15200 Santa Fe Trail Drive
Suite 204
Lenexa, KS 66219
United States

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