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Re: [EnergyPlus_Support] Digest Number 4986 [2 Attachments]



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On 29 Sep 2015, at 10:50, EnergyPlus_Support@xxxxxxxxxxxxxxx wrote:



EnergyPlus Support Group

7 Messages
Digest #4986


1a
Eplusout.eso does not exist. ReadVarsESO program terminated. Help??? by alegorga

1b
Re: Eplusout.eso does not exist. ReadVarsESO program terminated. Hel by "Chandan Sharma" chandansharma101


2
Lancering METIZ by "Geert Bellens" geertbellens


3a
Re: Airflow network compared to ZoneInfiltration:Effective Leakage A by rueboudreaux


4a
Best way to represent openings by sm.ibag

4b
Re: Best way to represent openings by "Jean Marais" jeannieboef


5a
Re: How exactly EnergyPlus calculates the primary airflow rate in co by "Jean Marais" jeannieboef



Messages
1a
Eplusout.eso does not exist. ReadVarsESO program terminated. Help???

Mon Sep 28, 2015 4:50 am (PDT) . Posted by:
alegorga

Dear all


It is my first experience with Energyplus 8.3. I´m trying to simulate the file minimal and unfortunately occurs the follow error. Can anyone help me to solve this?
I´ve already tried to install old version but the problem remain


ReadVarsESO
Requested ESO file=eplusout.eso
does not exist. ReadVarsESO program terminated.
ReadVarsESO program terminated.
ReadVarsESO
processing:test.mvi
Requested ESO file=eplusout.mtr
does not exist. ReadVarsESO program terminated.
ReadVarsESO program terminated.


Thanks


Alexandre







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1b
Re: Eplusout.eso does not exist. ReadVarsESO program terminated. Hel

Mon Sep 28, 2015 5:53 am (PDT) . Posted by:
"Chandan Sharma" chandansharma101

Does the input file (*.idf) have "Output:Variable:" objects such as below?

Output:Variable,*,Site Outdoor Air Drybulb Temperature,hourly; !- Zone
Average [C]

On Sun, Sep 27, 2015 at 3:39 AM, alegorga@xxxxxxxxx [EnergyPlus_Support] <
EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:

>
>
> Dear all
>
>
> It is my first experience with Energyplus 8.3. I´m trying to simulate the
> file minimal and unfortunately occurs the follow error. Can anyone help me
> to solve this?
>
> I´ve already tried to install old version but the problem remain
>
>
> ReadVarsESO
>
> Requested ESO file=eplusout.eso
>
> does not exist. ReadVarsESO program terminated.
>
> ReadVarsESO program terminated.
>
> ReadVarsESO
>
> processing:test.mvi
>
> Requested ESO file=eplusout.mtr
>
> does not exist. ReadVarsESO program terminated.
>
> ReadVarsESO program terminated.
>
> Thanks
>
> Alexandre
>
>
>
>



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2
Lancering METIZ

Mon Sep 28, 2015 7:03 am (PDT) . Posted by:
"Geert Bellens" geertbellens

![0001.jpg][1]

Bestbuildingconcept heeft in de vakantie niet stilgezeten. Zo
lanceren we bijvoorbeeld een gloednieuwe dienst, in samenwerking
met een zeer ervaren partner én gaan we een iconische Antwerpse
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![0002.jpg][2]

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![0003.jpg][3]

![0004.jpg][4]

[M][5][eer info][5][ op w][5][ww.metiz.be][5]

![0005.jpg][6]

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Bestbuildingconcept is gespecialiseerd in draadloze monitoring
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Op vraag van de hogeschool Thomas More zijn we een woontoren gaan
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Een meetfrequentie van +- 1 meting per 2 seconden was
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De test is goed verlopen en het komende jaar zullen permanent
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![0006.jpg][7]

[M][8][eer info][8][ op de website][8]

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![0008.jpg][10]

![0009.jpg][11]

![0010.jpg][12]

[M][13][eer info][13][ op de website][13]

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Bestbuildingconcept is een ingenieursbureau, opgericht door
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**[Comfortmetingen][14]**

[**Draadloze monitoring**][14]

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[![0011.jpg][16]][16]

[![0012.jpg][17]][17]

[![0013.jpg][18]][18]

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Veel meer informatie vindt u op onze website
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[![0014.png][22]][22]

[![0015.png][23]][23]

[1]:
http://cdn.flxml.eu/dyn/wizard/_custom/7020/78009/assets/1443448495_0001.jpg
[2]:
http://cdn.flxml.eu/dyn/wizard/_custom/7020/78009/assets/1443448495_0002.jpg
[3]:
http://cdn.flxml.eu/dyn/wizard/_custom/7020/78009/assets/1443448495_0003.jpg
[4]:
http://cdn.flxml.eu/dyn/wizard/_custom/7020/78009/assets/1443448495_0004.jpg
[5]: http://cdn.flxml.eu/lt-3786757-d97c20acd71ba78532c60632006b8c80
[6]:
http://cdn.flxml.eu/dyn/wizard/_custom/7020/78009/assets/1443448495_0005.jpg
[7]:
http://cdn.flxml.eu/dyn/wizard/_custom/7020/78009/assets/1443448495_0006.jpg
[8]:
http://cdn.flxml.eu/lt-3786747-d97c20acd71ba78532c60632006b8c80
[9]:
http://cdn.flxml.eu/dyn/wizard/_custom/7020/78009/assets/1443448495_0007.jpg
[10]:
http://cdn.flxml.eu/dyn/wizard/_custom/7020/78009/assets/1443448496_0008.jpg
[11]:
http://cdn.flxml.eu/dyn/wizard/_custom/7020/78009/assets/1443448496_0009.jpg
[12]:
http://cdn.flxml.eu/dyn/wizard/_custom/7020/78009/assets/1443448496_0010.jpg
[13]: http://cdn.flxml.eu/lt-3786745-d97c20acd71ba78532c60632006b8c80
[14]: http://cdn.flxml.eu/lt-3786749-d97c20acd71ba78532c60632006b8c80
: http://cdn.flxml.eu/lt-3786749-d97c20acd71ba78532c60632006b8c80
: http://cdn.flxml.eu/lt-3786749-d97c20acd71ba78532c60632006b8c80
: http://cdn.flxml.eu/lt-3786749-d97c20acd71ba78532c60632006b8c80
[18]: http://cdn.flxml.eu/lt-3786753-d97c20acd71ba78532c60632006b8c80
[19]: http://cdn.flxml.eu/lt-3786751-d97c20acd71ba78532c60632006b8c80
[20]:
mailto:Geert.Bellens@xxxxxxxxxxxxxxxxxxxxxx?subject=Informatie%20aanvraag
: http://cdn.flxml.eu/lt-3786755-d97c20acd71ba78532c60632006b8c80
: http://cdn.flxml.eu/lt-3786759-d97c20acd71ba78532c60632006b8c80




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3a
Re: Airflow network compared to ZoneInfiltration:Effective Leakage A

Mon Sep 28, 2015 7:33 am (PDT) . Posted by:
rueboudreaux

Jean, I set it up by hand.

I attached the Airflow network objects. Here is the effective leakage area object that I am comparing it to:


!- === ALL OBJECTS IN CLASS: ZONEINFILTRATION:EFFECTIVELEAKAGEAREA ===========

ZoneInfiltration:EffectiveLeakageArea,
ELA, !- Name
Zone One, !- Zone Name
AChangeFile, !- Schedule Name
14806.4216068322, !- Effective Air Leakage Area {cm2}
0.00029, !- Stack Coefficient
0.000137; !- Wind Coefficient

The AChangeFile is just a column of 1's.

Thanks,

Philip



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4a
Best way to represent openings

Mon Sep 28, 2015 9:38 am (PDT) . Posted by:
sm.ibag

Hi everyone, I'm new to all this building energy modeling thing and I've got some doubts while creating my model. I'm modeling a real building and my objective is to simulate a green roof on it and evaluate if this modification can reduce the total eletric consumption (decreasing the use of the ACs).
I thought I should use the FullInteriorlandExterior option, and for that I created all my spaces with a convex geometry. But, many rooms got split up in many pieces, so I assigned Air Walls for the 'openings&#39;. I've read that it transforms it into a Drywall material, so the heat is transfered, but not airflow. So I thought of using the "ZoneCrossMixing" to allow that.
My questions are:
Should I really use the ZoneCrossMixing and Air Walls to represent this openings? That way I would let them be two different thermal zones.
Should I merge the two spaces into one thermal zone? I was really afraid of all the possible problems of using Internal Mass.
Is there really a huge difference in results between FullExterior and FullInteriorandExterior? Should I forget all of the above and just use FullExterior?
I'm sorry for all these subjective questions, I have just come to a dead-end, so I thought I could use an expert advice :)

P.S: before anyone questions, this simulation is part of my thesis, but I really wanted to make it as precise as possible, since the building being simulated is from the company I am currently an Intern in ;D





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4b
Re: Best way to represent openings

Mon Sep 28, 2015 9:31 pm (PDT) . Posted by:
"Jean Marais" jeannieboef

Don't worry. You are asking good questions. If you were investigating
something like a daylighting savings program requiring good simulation of
indoor lighting levels for the photo sensors to be representative, then the
full interior and exterior option is for you. As you are interested in an
exterior roof, it is probably less important.

That being said, the user comfort can be better captured if you subdivide
the zones as you have. In some situations, especially the placement of
thermostats and zone HVAC this could be important.

Cross-mixing was the correct idea. Usually the amount is large and
sufficient to ensure a well mixed zone(s).

I want to leave one thought with you:
Simulations are most powerful when they are comparing two identical models
where one parameter varies. Then the urge to get very realistic models is
less. The simulations will tell you A is better than B. This is where the
programs are most powerful. This is "qualitive".

The next level is to ask 'how much better is A than B'. This is
"quantitive". How exact the answer to this is depends on many large
assumptions. And so the answer is more often than not quasi-quantitive in
that you gain an idea of the magnitudes of the results. Many people forget
that. We have to choose that right kind of investigation at the right time.
On 28 Sep 2015 6:38 pm, "sm.ibag@xxxxxxxxx [EnergyPlus_Support]" <
EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:

>
>
> Hi everyone, I'm new to all this building energy modeling thing and I've
> got some doubts while creating my model. I'm modeling a real building and
> my objective is to simulate a green roof on it and evaluate if this
> modification can reduce the total eletric consumption (decreasing the use
> of the ACs).
>
> I thought I should use the FullInteriorlandExterior option, and for that I
> created all my spaces with a convex geometry. But, many rooms got split up
> in many pieces, so I assigned Air Walls for the 'openings&#39;. I've read that
> it transforms it into a Drywall material, so the heat is transfered, but
> not airflow. So I thought of using the "ZoneCrossMixing" to allow that.
>
> My questions are:
>
> 1.
>
> Should I really use the ZoneCrossMixing and Air Walls to represent
> this openings? That way I would let them be two different thermal zones.
> 2.
>
> Should I merge the two spaces into one thermal zone? I was really
> afraid of all the possible problems of using Internal Mass.
> 3.
>
> Is there really a huge difference in results between FullExterior and
> FullInteriorandExterior? Should I forget all of the above and just use
> FullExterior?
>
> I'm sorry for all these subjective questions, I have just come to a
> dead-end, so I thought I could use an expert advice :)
>
> P.S: before anyone questions, this simulation is part of my thesis, but I
> really wanted to make it as precise as possible, since the building being
> simulated is from the company I am currently an Intern in ;D
>
>
>
>



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5a
Re: How exactly EnergyPlus calculates the primary airflow rate in co

Mon Sep 28, 2015 9:20 pm (PDT) . Posted by:
"Jean Marais" jeannieboef

Normally, maximum rates for massflows through damper or valve type
equipment are set by the maximum rates required during the design day
simulations + the user specified sizing factor. The airflow rates are, of
course, quite dependent on the user specified delivery air temperature and
humidity (because an ideal air system is used for this part of the sizing
simulations, not the detailed equipment specified).
On 24 Sep 2015 11:55 pm, "Solomon Yin solomonyp@xxxxxxxxxxx
[EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:

>
>
> Hi guys,
>
> I have a question on the calculation of primary airflow rate for series
> PIU when the cooling is required. A brief calculation procedure is
> introduced in the engineering manual page 406. My question is what are the
> other constrains that regulate the primary airflow rate besides the zone
> load and the minimum primary air fraction that you manually set?
>
> Thanks
>
> Solomon
>
>



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