[Bldg-sim] eQUEST logic statements

[Horowitz, Scott]

Steve,

 

Yes, you can only use 80 characters on a DOE2 BDL line. You'll either
need to break up your logic conditions or try using shorter variable
names.

 

Scott

 

--

Scott Horowitz

Center for Buildings & Thermal Systems

National Renewable Energy Laboratory

1617 Cole Blvd.

Golden, CO 80401

303.384.7560

 

________________________________

From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Steve
Mignogna
Sent: Monday, September 29, 2008 1:24 PM
To: Mike Smith
Cc: bldg-sim at lists.onebuilding.org
Subject: Re: [Bldg-sim] eQUEST logic statements

 

Mike-

I've done various things using with logic statements in eQuest but
usually find that they create more problems then they solve.  Simple
logic statements work fine but when I create long statements they seem
to get cut off and corrupt my .inp file.  Does anyone else share this
opinion? I'm curious to see if complex logic statements can be
incorporated without errors.  For example, I've created scripts that
pull Occupancy, Heat Gain, LPD, and EPD values based on the schedules
assigned to the spaces.  They usually work first time but once I re-open
my model it becomes corrupted. I think this has something to do with
DOE2/eQuest only being able to read a certain amount of characters per
line.  Any thoughts?

-- 
Steve Mignogna
Atelier Ten




On Mon, Sep 22, 2008 at 1:47 PM, Mike Smith <Michael_Sm at ieice.com>
wrote:

Greetings,

I have not had any real experience using logic statements in eQUEST and
am wondering if there is anyone out there proficient in using such
techniques in their model developments.  I have seen the 'User-Defined
Default Expression' option where logic commands can be entered, but have
not been able to figure out good uses for this tool.  I have seen how it
can be useful in making building parameters interdependent, but this is
often not needed in the model I construct.

I would appreciate it if someone could share a good document (or
information otherwise) that would have some examples with applicable
language for the user-defined default expression.

Related to this, is it possible to systematically change certain defined
values (LPD, infiltration, etc...) by a factor to create new defined
values?  

Thanks in advance,

Mike Smith
Energy Analyst

INTERFACE ENGINEERING
708 SW Third Avenue, Suite 400
Portland, OR 97204

Direct: 503.382.2625
Fax: 503.382.2262

Washington * Oregon * California
www.interfaceengineering.com <http://www.interfaceengineering.com/>  


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