Dear Sir,When we set a wind velocity exponent a , TRNFlow itself can calculate the wind speed V based on equation V = Vr (Z/Zr)^a where Vr is the known wind speed at a reference height Zr, Z is the height of the building or room.Which relative experts can tell me how to know the VALUE of Zr and Vr?
1) I have a question about wind condition for Type 56. If I coupled TRNFlow, does the setting of wind speed and direction in Type 56 or Type 15 connected to Type 56 still influence the zone’s parameters such as indoor temp., CO2 concentration and Qheat etc.?
If it doesn’t influence, how to define them in TRNFlow? Because I set the wind speed as 0 m/s and 100 m/s separately, the difference of escaping hot air mass from the zone with open windows for 0 m/s and 100 m/s only 4%. Is it RIGHT?
Please relative experts pass me some experience and introduction!
2) I found in TRNFlow we can only set the wind velocity exponent of the building:
Please relative experts pass me some experience and introduction!
Thanks in advance!
Br
wang---------- Forwarded message ----------
From: 王洋 <wanghongyang1767@gmail.com>
Date: 2011/10/30
Subject: Wind Speed and Direction
To: trnsys-users@cae.wisc.edu
Dear all,
1) I have a question about wind condition for Type 56. If I coupled TRNFlow, does the setting of wind speed and direction in Type 56 or Type 15 connected to Type 56 still influence the zone’s parameters such as indoor temp., CO2 concentration and Qheat etc.?
If it doesn’t influence, how to define them in TRNFlow? Because I set the wind speed as 0 m/s and 100 m/s separately, the difference of escaping hot air mass from the zone with open windows for 0 m/s and 100 m/s only 4%. Is it RIGHT?Please relative experts pass me some experience and introduction!
2) I found in TRNFlow we can only set the wind velocity exponent of the building:
When we set a wind velocity exponent a , TRNFlow itself can calculate the wind speed V based on equation V = Vr (Z/Zr)^a where Vr is the known wind speed at a reference height Zr, Z is the height of the building or room.Which relative experts can tell me how to know the VALUE of Zr and Vr?
Please relative experts pass me some experience and introduction!
Thanks in advance!
Br
wang
PLUS: Thanks for Mr. Duffy's last reply!2011/10/28 <trnsys-users-request@cae.wisc.edu>Send TRNSYS-users mailing list submissions to
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Today's Topics:
1. Re: Equation (Matt Duffy)
---------- 已转发邮件 ----------
From: "Matt Duffy" <duffy@tess-inc.com>
To: wanghongyang1767@gmail.com, heinze@ingweber.de, trnsys-users@cae.wisc.edu, hotline@transsolar.com
Date: Fri, 28 Oct 2011 13:48:41 -0500 (CDT)
Subject: Re: [TRNSYS-users] Equation
Wang,
You could simply make a schedule in a spreadsheet like Excel that is at 1, 2, 3, 15, etc. or 60 minute intervals, and read that into your simulation with Type9 data reader.
Best regards,
Matt Duffy
----- Original Message -----
From: "��" <wanghongyang1767@gmail.com>
Sent: Fri, October 28, 2011 5:55
Subject: Re: [TRNSYS-users] Equation
every 2 hours (starting at 10 am) the windows are fully opened (OF=1) for 5 minutes.
every 1 hour (starting at 9 am) the windows are fully opened (OF=1) for 5 minutes.
Then have a look th! e result.My simulation time step is 0.01 h our i.e. 3 mins. Whether the strange result has the relationship with the simulation time step or not? Or Please give me some advices for the strange result!Many thanks in advance!Br.wang
2011/10/28 Heinze <heinze@ingweber.de>
Hi Wang,
this should be possible with a normal schedule in TRNBuild.
Or you can use the Type 14h to enter the „schedule“ directly in the Simulation Studio.
best regards
Sascha Heinze
Von: 王洋 [mailto:wanghongyang1767@gmail.com]
Gesendet: Freitag, 28. Oktober 2011 11:21
An: trnsys-users@cae.wisc.edu
Betreff: [TRNSYS-users] Equation
Dear all,
I want to design an EQUATION to control the Opening Factor of the window (Input of TRNFlow) as 1:
every 2 hours (starting at 10 am) the windows are fully opened (OF=1) for 5 minutes.
every 1 hour (starting at 9 am) the windows are fully opened (OF=1) for 5 minutes.
Many thanks in advance!
Br.
!wang
在 2011年10月27日 下午2:59， <trnsys-users-request@cae.wisc.edu>写道：
Send TRNSYS-users mailing list submissions to
trnsys-users@cae.wisc.edu
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https://mailman.cae.wisc.edu/listinfo/trnsys-usersor, via email, send a message with subject or body 'help' to
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Today's Topics:
1. Re: TRNFlow Cs of Large Opening , Simulink integrated with
TRNSYS (??)
2. Re: weather files (Timothy McDowell)
3. Re: radiator_modelling (Matt Duffy)
4. Re: weather files (Matt Duffy)
---------- 已转发邮件 ----------
From: 王洋 <wanghongyang1767@gmail.com>
To: trnsys-users@cae.wisc.edu, hotline@transsolar.com
Date: Thu, 27 Oct 2011 14:11:24 +0200
Subject: Re: [TRNSYS-users] TRNFlow Cs of Large Opening , Simulink integrated with TRNSYSDear all,
I have some questions about TRNFlow and Calling Matlab.
1) For Closed Opening in TRNFlow: There is a flow coefficient Cs per m crack length, the default value is 0.0001 kg/s/m at 1 Pa. Why is it this value? How to get or calculate it? Since I don't know how many met ers of the cracks are in the zone. I seeked from the TRNFlow manual but there is nothing about it.
when I set Cs as 0 kg/s/m at 1 Pa, BUT I found there is still air flow escaping from the zone (there is only one zone in my project). Because I observed CO2 concentration is still decreasing all the time after closed all the openings.
If I want to simulate the infiltration rate (0.4 1/h) after closing all the openings, How could I set this Cs? What equations can I use? Many thanks in advance!
2) For Calling Simulink: Which experts have some experience for calling Simulink? I d! esigned a Controller using Simulink, I need connect the controller’s output and input with the TYPE 56’s input and output, and set a set-point value using Simulink. Who could tell me some general guides or pass me your examples about that. I will appreciate very much for your help! Since I also didn't find anything in Manual or others.
Or must I translate Simulink into M-file, then connect with TYPE 56?
Many thanks in advance!
Br
---------- 已转发邮件 ----------
From: "Timothy McDowell" <mcdowell@tess-inc.com>
To: trnsys-users@cae.wisc.edu
Date: Thu, 27 Oct 2011 07:52:12 -0500 (CDT)
Subject: Re: [TRNSYS-users] weather files
You can use the Type9 data reader to read-in your data and t! he Type16 radiation processor to determine the radiation on different surfaces.
Regards,
Tim
----------------------------------
Timothy McDowell
Executive Vice President
Thermal Energy System Specialists, LLC
22 N. Carroll St, Suite 370
Madison, WI 53703
Phone: 608-274-2577
Fax: 608-278-1475
----- Original Message -----
From: "Richard Hall" <r.hall@steel-sci.com>
Sent: Thu, October 27, 2011 6:56
Subject: Re: [TRNSYS-users] weather files
There are a few ways to do it, I just use the Type 9 data reader and just copy the data from Excel into a text file. But this requires that you do the solar radiation conversion from horizontal to your surface outside TRNSYS (I have a custom Excel FORTRAN function and the advantage I find is that it make the simulation time independent).
Or you can use the Type 99 and there are examples of how to do that in:
\Trnsys17\Examples\Weather Data
Rich
From: trnsys-users-bounces@cae.wisc.edu [trnsys-users-bo! unces@cae.wisc.edu] On Behalf Of Rana Mohsen [r.mohsen@li! ve.com]
Sent: 27 October 2011 12:22
To: trnsys-users@cae.wisc.edu
Subject: [TRNSYS-users] weather files
Dear All, i am a new user in Trnsys 17. i must do a simulation, and validate some data for buildings. and i need to create a weather file. so how can i do it. i have my own Data, radiation, ambient temperature, and relative humidity. do i must have a "meteonorm" program to create a weather data or there is any other solution.
Best Regards,
! Architect| Rana Hanafy
Tübingerstraße 93,
70178 Stuttgart,
Germany
0049-176-59730029
This transmission is confidential and must not be used or disclosed by anyone other than the intended recipient. The Steel Construction Institute cannot accept any responsibility for any use or misuse of the transmission by anyone.
The Steel Construction Institute is a company limited by guarantee registered in England and Wales under! registered number 1916698 and whose registered office is at Silwood P ark, Ascot, Berks, SL5 7QN, England. If you have received this message in error, you should not disclose its contents to anyone; please delete it and notify the sender immediately.
_______________________________________________TRNSYS-users mailing listTRNSYS-users@cae.wisc.eduhttps://mailman.cae.wisc.edu/listinfo/trnsys-users
---------- 已转发邮件 ----------
From: "Matt Duffy" <duffy@tess-inc.com>
To: "NOM KARAS" <nomkaras@gmail.com>, trnsys-users@cae.wisc.edu
Date: Thu, 27 Oct 2011 07:58:12 -0500 (CDT)
Subject: Re: [TRNSYS-users] radiator_modelling
Dear Nomikos,
First of all, if you have an o! lder version of the TESS Libraries, it is not very expensive to upgrade. I would recommend doing that and obtaining the Type1231 radiator. If I did not have that option, I do not think I would pursue active layers. Rather, I would probably just using a pipe and specify the the loss coefficient, then couple that with Type56 via a GAIN input. The validity is questionable, but it might get you close.
Regards,
Matt Duffy
----- Original Message -----
From: "NOM KARAS" <nomkaras@gmail.com>
Sent: Thu, October 27, 2011 5:47
Subject: [TRNSYS-users] radiator_modelling
Dear Trnsys users,
I want to modell a classic heating system with radiators (that use hot water, heated from a central boiler). I have read previous threads that talk about a component of transsolar (type 362 ) that simulates such a radiator and found that TESS has a similar component type-1231. Unfortunately I don't have these components (I have an older version of TESS library) and I wondered if i could simulate somehow the radiator with type-56 (trnbuild) by using an active layer. I know that active layers are traditionally used for internal floor heating, but I made this consideration :
To add to my heating zone an external wall with active layer and adiabatic conditions on the surface looking to the enviroment ( active layers cant unfortunately be used in internal walls) that has wall area equal to the desired radiator (and by ! equal i mean the total ! surface of the radiator that takes part in the radiation-convection&nb sp; heat exchange).
I would appreciate your opinion on this,
with regards Nomikos.
_______________________________________________TRNSYS-users mailing listTRNSYS-users@cae.wisc.eduhttps://mailman.cae.wisc.edu/listinfo/trnsys-users
---------- 已转发邮件 ----------
From: "Matt Duffy" <duffy@tess-inc.com>
To: trnsys-users@cae.wisc.edu
Date: Thu, 27 Oct 2011 07:59:24 -0500 (CDT)
Subject: Re: [TRNSYS-users] weather files
There is also an example of Type9 with Type16 in that same directory ".\Examples\Weather Data"
Regards,
Matt
----- Original Message -----
From: "Timothy McDowell" <mcdowell@tess-inc.com>
Sent: Thu, October 27, 2011 7:52
Subject: Re: [TRNSYS-users] weather files
You can use the Type9 data reader to read-in your data and the Type16 radiation processor to determine the radiation on different surfaces.
Regards,
Tim
----------------------------------
Timothy McDowell
Executive ! Vice President
Thermal Energy System Specialists, LLC
22 N. Carroll St, Suite 370!
Madison, WI 53703
Phone: 608-274-2577
Fax: 608-278-1475
----- Original Message -----
From: "Richard Hall" <r.hall@steel-sci.com>
Sent: Thu, October 27, 2011 6:56
Subject: Re: [TRNSYS-users] weather files
There are a few ways to do it, I just use the Type 9 data reader and just copy the data from Excel into a text file. But this requires that you do the solar radiation conversion from horizontal to your surface o! utside TRNSYS (I have a custom Excel FORTRAN function and the advantage I find is that it make the simulation time independent).
Or you can use the Type 99 and there are examples of how to do that in:
\Trnsys17\Examples\Weather Data
Rich
From: trnsys-users-bounces@cae.wisc.edu [trnsys-u! sers-bo! unces@cae.wisc.edu] On Behalf Of Rana Mohsen [r.mohsen@live.com]
Sent: 27 October 2011 12:22
To: trnsys-users@cae.wisc.edu
Subject: [TRNSYS-users] weather files
Dear All, i am a new user in Trnsys 17. i must do a simulation, and validate some data for buildings. and i need to create a weather file. so how can i do it. i have my own Data, radiation, ambient temperature, and relative humidity. do i must have a "meteonorm" program to create a weather data or there is any other solution.
Best Regards,
Architect| ! Rana Hanafy
Tübin gerstraße 93,
70178 Stuttgart,
Germany
0049-176-59730029
This transmission is confidential and must not be used or disclosed by anyone other than the intended recipient. The Steel Construction Institute cannot accept any responsibility for any use or misuse of the transmission by anyone.
The Steel Construction Institute is a ! company limited by guarantee registered in England and Wales under! registered number 1916698 and whose registered office is at Silwood P ark, Ascot, Berks, SL5 7QN, England. If you have received this message in error, you should not disclose its conten! ts to anyone; please delete it and notify the sender immediately.
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