Send TRNSYS-users mailing list submissions to
trnsys-users@cae.wisc.edu
To subscribe or unsubscribe via the World Wide Web, visit
https://mailman.cae.wisc.edu/listinfo/trnsys-users
or, via email, send a message with subject or body 'help' to
trnsys-users-request@cae.wisc.edu
You can reach the person managing the list at
trnsys-users-owner@cae.wisc.edu
When replying, please edit your Subject line so it is more specific
than "Re: Contents of TRNSYS-users digest..."
Today's Topics:
1. Re: Real-time simulation (Matt Duffy)
2. Re: Real-time simulation (David BRADLEY)
3. TRNSYS3D PLUGIN ERR IN GOOGLE SKETCHUP (Jay Zhu)
4. problem about type 121b auxiliary heating (Jay Zhu)
5. beam radiation warnings (Ben Elliston)
---------- Forwarded message ----------
From: "Matt Duffy" <duffy@tess-inc.com>
To: "Santiago Naranjo Palacio" <sn377@cornell.edu>, trnsys-users@cae.wisc.edu
Date: Mon, 28 Mar 2011 15:52:49 -0500 (CDT)
Subject: Re: [TRNSYS-users] Real-time simulation
Dear Santiago Naranjo Palacio,
Perhaps I am mistaken, but I vaguely remember a presentation at IBPSA Building Simulation 2009 from a gentleman at CSTB who was doing real-time simulation with TRNSYS? Does anyone else remember that? If not, I can ask my colleague upon your request.
Also, TRNSYS can be paused by pressing the "F7" key; TRNSYS also pauses when you run TRNSYS from the compiler in Debug mode and you step through the source code. Thus, I do believe there is a way to do this, but I am unfortunately not sure how.
Best regards,
Matt Duffy----- Original Message -----
From: "Santiago Naranjo Palacio" <sn377@cornell.edu>
Sent: Thu, March 24, 2011 9:11
Subje! ct: [TRNSYS-users] Real-time simulation
--
Santiago Naranjo Palacio_______________________________________________ TRNSYS-users mailing list TRNSYS-users@cae.wisc.edu https://mailman.cae.wisc.edu/listinfo/trnsys-users
---------- Forwarded message ----------
From: David BRADLEY <d.bradley@tess-inc.com>
To: Santiago Naranjo Palacio <sn377@cornell.edu>
Date: Mon, 28 Mar 2011 16:28:21 -0500
Subject: Re: [TRNSYS-users] Real-time simulation
Santiago,
I'm not sure that you need to do anything special. The TRNSYS kernel (the brains that determine when convergence has been reached) call the Types and then just waits until the Type hits its "return" statement (returning control to the kernel). The kernel will not increment the timestep until all of the outputs from Types have converged (stopped changing from one iteration to the next). I assume that you have developed some Type in your simulation that communicates with your controller. The kernel should call that Type and then wait until the controller is ready to make its decision. The controller's decision should get placed into the Type's outputs and then the Type should return control to the kernel as all Types do. The one thing you might do a little differently is to prevent your Type/controller from trying to make a new decision at every simulation iteration; allow it to make one control decision per time step and then hang on to that control decision until the next time step. You can do that either by having your Type only process at the "post convergence" call or it can make its decision on the first iteration of a new time step and then return without reevaluating at all other iterations.
Best,
David
On 3/24/2011 09:11, Santiago Naranjo Palacio wrote:Dear TRNSYS Users,Is there a way to run TRNSYS on real-time? I am working on a project where a real controller and a TRNSYS project have to communicate with each other. One of my problems right now is trying to force TRNSYS to run on real-time so that the commands from/to the controller are received at the appropiate time. If this is not possible, is there a way in which TRNSYS can be externally paused after each TIME STEP and restarted after receiving an external signal? (I figure this would be another way of forcing the system to run on real-time).Thanks!_______________________________________________ TRNSYS-users mailing list TRNSYS-users@cae.wisc.edu https://mailman.cae.wisc.edu/listinfo/trnsys-users
--
Santiago Naranjo Palacio
-- *************************** David BRADLEY Principal Thermal Energy Systems Specialists, LLC 22 North Carroll Street - suite 370 Madison, WI 53703 USA P:+1.608.274.2577 F:+1.608.278.1475 d.bradley@tess-inc.com http://www.tess-inc.com http://www.trnsys.com
---------- Forwarded message ----------
From: Jay Zhu <zhujiang1124@gmail.com>
To: trnsys-users@cae.wisc.edu
Date: Mon, 28 Mar 2011 20:01:43 -0500
Subject: [TRNSYS-users] TRNSYS3D PLUGIN ERR IN GOOGLE SKETCHUP
Hello everyone:
i got the same err when i reopen the previous work each time, and i had the same problem in other computers also. would you please give me some suggestion about this plugin err?
NoMethodError
undefined method `input_object' for nil:NilClass
BACKTRACE:
C:/Program Files (x86)/Google/Google SketchUp 8/Plugins/Trnsys3d/lib/interfaces/Zone.rb:268:in `cleanup_entity'
C:/Program Files (x86)/Google/Google SketchUp 8/Plugins/Trnsys3d/lib/interfaces/Zone.rb:181:in `each'
C:/Program Files (x86)/Google/Google SketchUp 8/Plugins/Trnsys3d/lib/interfaces/Zone.rb:181:in `cleanup_entity'
C:/Program Files (x86)/Google/Google SketchUp 8/Plugins/Trnsys3d/lib/interfaces/Zone.rb:179:in `each'
C:/Program Files (x86)/Google/Google SketchUp 8/Plugins/Trnsys3d/lib/interfaces/Zone.rb:179:in `cleanup_entity'
C:/Program Files (x86)/Google/Google SketchUp 8/Plugins/Trnsys3d/lib/interfaces/ModelInterface.rb:221:in `check_model'
C:/Program Files (x86)/Google/Google SketchUp 8/Plugins/Trnsys3d/lib/Bag.rb:87:in `each'
C:/Program Files (x86)/Google/Google SketchUp 8/Plugins/Trnsys3d/lib/Bag.rb:87:in `each'
C:/Program Files (x86)/Google/Google SketchUp 8/Plugins/Trnsys3d/lib/interfaces/ModelInterface.rb:221:in `check_model'
C:/Program Files (x86)/Google/Google SketchUp 8/Plugins/Trnsys3d/lib/interfaces/ModelInterface.rb:212:in `update_model'
C:/Program Files (x86)/Google/Google SketchUp 8/Plugins/Trnsys3d/lib/interfaces/ModelInterface.rb:118:in `draw_model'
C:/Program Files (x86)/Google/Google SketchUp 8/Plugins/Trnsys3d/lib/ModelManager.rb:183:in `open_input_file'
C:/Program Files (x86)/Google/Google SketchUp 8/Plugins/Trnsys3d/lib/ModelManager.rb:66:in `attach_input_file'
C:/Program Files (x86)/Google/Google SketchUp 8/Plugins/Trnsys3d/lib/ModelManager.rb:58:in `start'
C:/Program Files (x86)/Google/Google SketchUp 8/Plugins/Trnsys3d/lib/PluginManager.rb:138:in `new_model'
C:/Program Files (x86)/Google/Google SketchUp 8/Plugins/Trnsys3d/lib/PluginManager.rb:64:in `start'
C:/Program Files (x86)/Google/Google SketchUp 8/Plugins/Trnsys3d/lib/PluginManager.rb:215
C:/Program Files (x86)/Google/Google SketchUp 8/Plugins/Trnsys3d/lib/Startup.rb:32:in `load'
C:/Program Files (x86)/Google/Google SketchUp 8/Plugins/Trnsys3d/lib/Startup.rb:32
C:/Program Files (x86)/Google/Google SketchUp 8/Tools/extensions.rb:36:in `require'
C:/Program Files (x86)/Google/Google SketchUp 8/Tools/extensions.rb:36:in `load'
C:/Program Files (x86)/Google/Google SketchUp 8/Plugins/Trnsys3d.rb:18:in `register_extension'
C:/Program Files (x86)/Google/Google SketchUp 8/Plugins/Trnsys3d.rb:18
---------- Forwarded message ----------
From: Jay Zhu <zhujiang1124@gmail.com>
To: trnsys-users@cae.wisc.edu
Date: Mon, 28 Mar 2011 22:35:56 -0500
Subject: [TRNSYS-users] problem about type 121b auxiliary heating
Hey There:
I tried to use unitary air conditioner type 651 (for cooling) and type 121 auxiliary heating (for heating) to connect with type 56 house controlled by thermostat type 108 , i found a very curious result after testing these types by adding and deleting them
First time, When i totally delete the type 121, make the system runs, the simulation obvious will show the cooling only.
Second time, when i add the type 121 auxiliary heating, but i set heating point of the thermostat as low as 5 C, it means the heating will still not running based on the Tampa, Fl weather condition. So the result will shows the cooling only also without heating.
it is supposed the plot for these two cases should be exactly same in my opinion. However, cooling consumption of the second case with type 121(but i set it not work at all ) is lower than the first case, and the plot for the room temperature is also different.
Am i wrong somewhere ? i am so confused for this problem. Thank you in advance
I changed my simulation to air source heat pump now, but i still wanna know what the exactly problem is for the two simulation cases
---------- Forwarded message ----------
From: Ben Elliston <bje@air.net.au>
To: trnsys-users@cae.wisc.edu
Date: Tue, 29 Mar 2011 19:51:37 +1100
Subject: [TRNSYS-users] beam radiation warnings
Hi all.
I am using TRNSYS via NREL's Solar Advisor Model. I've supplied SAM
with my own TMY file constructed using locally sourced weather and
solar irradiance data. TRNSYS produces 400+ warnings like this:
*** Warning at time : 9.000000
Generated by Unit : 6
Generated by Type : 15
Message : The calculated value of the beam radiation exceeded the maximum possible beam radiation for this timestep. The beam radiation has been set to the extraterrestrial radiation for this timestep.
So that I can troubleshoot my TMY file (or perhaps the resultant
TRNSYS input file), can anyone explain what the warning means,
precisely? What could trigger it?
Thanks, Ben
_______________________________________________
TRNSYS-users mailing list
TRNSYS-users@cae.wisc.edu
https://mailman.cae.wisc.edu/listinfo/trnsys-users