[Equest-users] Custom System Type

[Joe Huang]

Matt,

With some previous versions of DOE-2 (2.1C, D, E), there was a Function feature that 
allowed users to add pieces of Fortran-like pseudo-code into the input file at designated 
points in the program.  Over the years, I've seen Functions varying in complexity from 
basically single-line adjustments of some input value to something  approaching a new 
system-type, such as CANMET developing a Function for desiccant cooling  in the mid-90's 
for an IEA project in which I was involved in the mid-90's.

I think most of the source code for Functions are still in DOE-2.2, but they have not been 
updated or checked for years, and thus for now this feature has been deactivated.

There are pro's and con's for Functions.  On the pro side, it allows adventuresome 
modelers like you to actually play around with the code.  On the con side, you have to 
know what you're doing, with a high probability of breaking something if you don't.

In respect to VRV, I've heard that the DOE-2.2 development team has been working on this 
for quite some time, and will probably be included in the next release.

Joe

Joe Huang
White Box Technologies, Inc.
346 Rheem Blvd., Suite 108D
Moraga CA 94556
yjhuang at whiteboxtechnologies.com
www.whiteboxtechnologies.com
(o) (925)388-0265
(c) (510)928-2683
"building energy simulations at your fingertips"


On 3/22/2012 1:17 PM, Matt Clough wrote:
>
> In eQuest, can you create a custom system type? Is it possible to create a different 
> system type without having access to the source code? For example how would you 
> represent a Variable Refrigerant Volume (VRV) system?
>
> It came up in a discussion today and I didn't have an answer.
>
> Regards,
>
> Matt Clough
>
>
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