Re: [EnergyPlus_Support] RVI or MVI files?

On Mon, Jul 23, 2012 at 5:37 AM, Yi Zhang <yizhang@xxxxxxxxx> wrote:

Dear Niraj,

Did you mean your laptop overheated when running full load? It sounds like you can do with a laptop cooler...

I've been working on a new feature of throttling jE+ threads on-the-fly. It was suggested by Jamie Bull, who wanted to run part load during the day and full load at night, which is a very interesting idea. You can try the attached copy (if the mailing list allows). The new version also resolves the "out-of-memory" problem when validating a large project. Someone reported that jE+ keeps falling over without realizing that his project contained more than 17 trillion jobs :-)

Jeremiah, you are mixing up Yi and Dr. Li...

Cheers,

Yi

Dr Yi Zhang

IESD, De Montfort University, United Kingdom

From: EnergyPlus_Support@xxxxxxxxxxxxxxx on behalf of Niraj Poudel
Sent: Sun 22/07/2012 22:50
To: EnergyPlus_Support@xxxxxxxxxxxxxxx

Subject: Re: [EnergyPlus_Support] RVI or MVI files?

Jeremiah,

I have a quick question. I recently set up Je+ to run about 1400 runs out of the 24000 runs that I need, with various PCM.inp definitions. My laptop could not handle that. It just heated up so much that had to shut down by the 46th run. So I was wondering what type of computer you are running your simulations on? I might have to invest in a powerful desktop if that is the case.

Niraj

On Sun, Jul 22, 2012 at 4:56 PM, CleanTech Analytics <jeremiah@xxxxxxxxxxxxxxxxxxxxxx> wrote:

Thank you for your comments Dr. Yi, I appreciate your comments, and encourage you or anyone else to correct me if I am wrong, and I may do the same.

For this question we are both right, for general e+ you are correct, but for jE+ the method I sent works.

Dr YI, have a question for you- have you used jE+ ? If not you may wish to explore it for parametric studies. Its ability to create a single file with the output of as many individual simulation runs as you wish has been a huge time saver for me in the past. Actually i have not been using jE+ since design builder added its parametric features, but am now thinking to start using it again due to its flexibility and because this post reminded me how useful it is so thanks to the original post for that=D

Kind regards

Sent from my Windows Phone

From: YuanLu Li
Sent: 7/22/2012 11:31 AM
To: EnergyPlus_Support
Subject: RE: [EnergyPlus_Support] RVI or MVI files?

Do not be offended, if you do not like me to add comments to your remarks.

The topic came up in the forum not long ago. Your .rvi in the current form may not work off-line as a post processor input.

There are sample batch files written by the EPlus experts in the past to list variables floor by floor, zone by zone, or by different classes using the same ESO after a long simulation run.

Dr. Li

To: amirhosein_ghoreishi@xxxxxxxxx; EnergyPlus_Support@xxxxxxxxxxxxxxx
From: jeremiah@xxxxxxxxxxxxxxxxxxxxxx
Date: Sat, 21 Jul 2012 19:19:03 -0700
Subject: Re: [EnergyPlus_Support] RVI or MVI files?

I just use the attached file , and change the variables to match the job.(it took me a while to figure it out from the IO, but it is actually very simple so I am sharing)

It contains this info:

eplusout.eso

eplusout.csv

Heating:DistrictHeating

Cooling:DistrictCooling

0

I have not tried your .rvi file. However, there are a number of problems.

"eplusout" is the name of the file during simulation. It is not available after the simulation.

For the above .rvi file to work, it must be present in the same directory as the user IDF file and have the same file name. The EPlus simulation batch file will test for the present of this file and rename it to in.rvi in the temp directory. If in.rvi is available at the end of simulation, the simulation would use this file to format the .csv file. If not, the whole .eso file would be sent to the .csv file. (up to default max of 250 columns) This is the function of the ReadVarsESO.exe.

If you do not have the variables spedified in the IDF, there will be no output. If the names are not correct in the rvi, there will be no output. The rvaudit will provide further information.

Heating:DistricHeating may not be the name of a valid variable. Therefore, the .rvi may not work. I usually have the OD drybulb as the first variable. Timestep size should be specified.

To use the .rvi as a post processor to customize the display columns using the ESO file with the IDF file name. The first eplusout.eso should be replaced with IDFfn.ESO. The second file hame should be the output file name say, DistrictHC.csv.

You can have many .rvi files for Windos heat gain of all or selected zones, Zone mean temperature only for one floor, etc. The .rvi files can be prepared and run in a batch file from one ESO.

The .RVI file may be resued for different projects, if you rename the IDFfn.eso to eplusout .eso or any other fixed name in your user file.

To explain:

eplusout.eso, this is what energy plus writes output to- the title is for the temp file energy plus produces for every run, in the temp directory before the last clean up section. The name in the user directory would be IDFfn.eso.
eplusout.csv is what format you want your output. (The name of the custom output file. You will not see the epusout.csv in the normal user directory, unless you do a post processing run..)
Variable names for each variable you want to report, and should have the desired reporting period specified.
0, this calls the end of file (To separate different sections of .rvi in one text file.)
Save your text as .rvi or .mvi (rvi for report variables, and mvi for meter variables)

Best regards

Jeremiah D. Crossett

CleanTech Analytics

503-688-8951

www.cleantechanalytics.com

This document may contain valuable information proprietary to CleanTech Analytics which is private and confidential. It may not be shared, copied, stored or transmitted in any form without the prior written consent of CleanTech Analytics

On Sat, Jul 21, 2012 at 6:16 PM, CleanTech Analytics <jeremiah@xxxxxxxxxxxxxxxxxxxxxx> wrote:

It is a rather simple syntex once you get it, I'll send an example a bit later.

Sent from my Windows Phone

From: Amir
Sent: 7/21/2012 5:00 PM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] RVI or MVI files?

Hello,

I'm using jEPlus for a parametric study, and it requires .rvi or .mvi files from Energy Plus to operate. I have already simulated the model in the Energy Plus but in the output folder there is neither a .rvi nor a .mvi file to be used for jEPlus. I was wondering if someone could tell me how to locate/generate these files.

Many thanks,

--

Niraj Poudel, Architectural Engineer.

PhD student, PDBE Program.

Clemson University, Clemson, SC.

Niraj Poudel, Architectural Engineer.

PhD student, PDBE Program.

Clemson University, Clemson, SC.