[esp-r] Re: export energy plus files

[Jordan Richie]

Hi everyone,

I'm working with an EnergyPlus reference model (from the DOE Commercial
Building Initiative) and I'd like to use the exact same materials and
constructions in an ESP-r model.

Here's the properties I can extract from the EnergyPlus model:

Conductivity
Density
Specific Heat
Thermal Absorptance
Solar Absorptance
Visible Absorptance

Does thermal absorptance in EnergyPlus correspond to "emissivity" in ESP-r?
 I'm assuming the Solar Absorptance in EnergyPlus corresponds to
Absorptivity in ESP-r.  Correct?  How about Visible Absorptance?

Many thanks

Jordan Richie

On Thu, Dec 30, 2010 at 8:42 PM, Jon Hand <jon at esru.strath.ac.uk> wrote:

>
> An update - I am working on export from ESP-r to V3.0 IDF files.  I think I
> have worked out
> the logic for geometric export so that 'doors' in ESP-r will be correctly
> exported.  I have
> also updated most of the export of casual gains to use the newer common
> blocks (that is
> still work in progress and needs testing)
>
> Although there is a general movement in the ESP-r community to explicitly
> represent frames around
> windows this creates a parent/child/grandchild situation which E+ really
> does not like.  One
> idea is to split the parent surface in two so that the frame is no longer a
> child surface.
>
> This work should be finished in the next couple of weeks and should make
> its want into
> the development branch.
>
> The reverse operation of scanning in an E+ IDF file - that should be
> technically possible
> and the question is whether there is sufficient interest in the community
> to make it
> worth doing.
>
> -Jon Hand
> ________________________________________
> From: esp-r-bounces at lists.strath.ac.uk [esp-r-bounces at lists.strath.ac.uk]
> On Behalf Of Georgios KOKOGIANNAKIS [
> Georgios.KOKOGIANNAKIS at nottingham.edu.cn]
> Sent: 31 December 2010 00:05
> To: esp-r at lists.strath.ac.uk; A.Sdei at brighton.ac.uk
> Subject: [esp-r]  FW: export energy plus files
>
> Arianna,
>
> I should have read your question a bit more carefully. I am not aware of a
> way to convert an E+ model into an ESP-r model. I thought you were asking
> the opposite.
>
> Best regards,
> Georgios
>
> From: esp-r-bounces at lists.strath.ac.uk [mailto:
> esp-r-bounces at lists.strath.ac.uk] On Behalf Of Georgios KOKOGIANNAKIS
> Sent: Friday, December 31, 2010 7:54 AM
> To: A.Sdei at brighton.ac.uk; esp-r at lists.strath.ac.uk
> Subject: [esp-r] Re: export energy plus files
>
> Arianna,
>
> The answer to your first question is yes but only to version 2.0 of
> EnergyPlus. You can then use the EnergyPlus transition utilities to bring
> your E+ model back to the latest version. The conversion from ESP-r to E+ is
> done only for the basic model features (geometry, materials and basic
> operations). It has been many years since I did this but I remember there is
> one limitation in the process: make sure your model does not have any doors.
> You can find the export option in the first menu of Project Manager (press
> “export current model”).
>
> The answer to your second question is again yes. However, I think that you
> need to convert your model files from DOS format into UNIX format and you
> need to correct the lines in the model files that include “C:/Esru/…” into
> whatever folder your model is in the cygwin area. There are many easy ways
> to do this process. I tend to use editors such as “Notepad++” in Windows or
> “Nedit” in Linux (same for cygwin). There was a script somewhere in the
> source code I think that could do all this automatically but I have never
> tried that.
>
> Best regards,
>
> Georgios
>
>
> From: esp-r-bounces at lists.strath.ac.uk [mailto:
> esp-r-bounces at lists.strath.ac.uk] On Behalf Of A.Sdei at brighton.ac.uk
> Sent: Friday, December 31, 2010 1:17 AM
> To: esp-r at lists.strath.ac.uk
> Subject: [esp-r] export energy plus files
>
> Dear All,
>
> does anyone know if it’s possible to export energy plus models into ESP-r?
> And can cfg files created by the native windows version of ESP-r be open and
> modified by the cygwin version?
>
> Thank you, very happy new year to all! Kind regards,
> Arianna
>
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