[Bldg-sim] Spam:Re: User Input Expression Error

[Jay Keazer]

Does anyone know if it's possible to call a simulation result as a variable
in an expression?  I would like use the Supply CFM of a system, as sized by
eQUEST (in a previous run) and shown on SV-A, in the expression for Outside
Air Ratio, Minimum Flow Ratio, etc.

 

Thanks,

 

 

Jay Keazer,  EI

Energy Engineering Team

TME, Inc.

2039 N Green Acres Road

Fayetteville, AR  72703

 

ph   479.521.8634

fax  479.521.1014

jkeazer at tmecorp.com <mailto:email at tmecorp.com> 

www.tmecorp.com <http://www.tmecorp.com/> 

 

 

 

From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Karen Walkerman
Sent: Thursday, June 26, 2008 7:03 AM
To: prabhat at kalapkrit.com
Cc: bldg-sim at lists.onebuilding.org
Subject: Spam:Re: [Bldg-sim] User Input Expression Error

 

I just pasted the expression into one of my projects and it worked fine.  You
may just need to allow the expression to go onto two lines like so:

PARENT("WIDTH")*PARENT("HEIGHT")*0.0464/
(PARENT("WIDTH")+PARENT("HEIGHT"))

Another way to shorten the expression is use #P instead of writing out
"Parent"

#P("WIDTH")*#P("HEIGHT")*0.0464/(#P("WIDTH")+#P("HEIGHT"))

Hope this helps

--
Karen

On Thu, Jun 26, 2008 at 4:28 AM, Prabhat Barnwal
<prabhat.greenbuildings at gmail.com> wrote:

Dear all,

While writing an expression for window frame width of curtain walls in
eQuest 3.61, I am getting 'Expression parsing error' saying the user
expression is too long. The expression used is-
default :
PARENT("WIDTH")*PARENT("HEIGHT")*0.0464/(PARENT("WIDTH")+PARENT("HEIGHT"))

How should I modify or change it?

Are there provisions for creating local variable by arithmetic operation on
present variables? For example, the length of this expression can be reduced
, if I calculate perimeter of parent wall first and use that value directly
in the expression.

Any help will be appreciated.

Regards,
Prabhat Barnwal
New Delhi

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