[TRNSYS-users] Outputs of Type 56 !
David BRADLEY
d.bradley at tess-inc.com
Fri Jun 8 13:42:40 PDT 2012
Kostas,
Pass the Type56 outputs to Type46 for integrating and printing to a
text file.
Best,
david
On 6/8/2012 10:11, ts0g . wrote:
>
> Dear TRNSYS users ,
>
> I have imported a 3d model ,from trnsys 3d plug-in for sketchup, into
> the Simulation Studio. I am using Type56 to generate my building's air
> temperature ( TAIR ) ,
> and the sensible heating&cooling demand of airnodes ( QHEAT-QCOOL ) .
> I have created 5 different thermal airnodes and my question is , which
> type should I
> use as an output in order to retrieve my results, after simulating, in
> a .txt file so I can process them and compare them with some
> theoretical measurements concerning
> these specific thermal zones.
> Thank you for your help !
>
> Kind regards,
> Kostas
>
>
>
>
>
> --Forwarded Message Attachment--
> From: d.bradley at tess-inc.com
> CC: trnsys-users at cae.wisc.edu
> To: ricardo.palomar at hotmail.com
> Date: Wed, 6 Jun 2012 14:09:13 -0500
> Subject: Re: [TRNSYS-users] Type 1716: ROTARY DESICANT DEHUMIDIFIER
>
> Ricardo,
> Without seeing the input file, its hard to know what the problem
> might be. If you can please send your project to me (directly, please
> do not reply to the entire list) then I can have a look.
> Kind regards,
> David
>
>
> On 6/6/2012 06:03, Ricardo Palomar Calahorra wrote:
>
> Hello !!!
>
> I´m trying to use the type 1716: ROTARY DESICANT DEHUMIDIFIER, but
> I´m having always the same problem, when I run the simulation the
> outputs 8 and 12 (Regeneration air relative humidity,
> and Condensate flow rate) are "0.00". And the outputs 2 and 3
> (Process air outlet humidity ratio, and Process air
> outletrelativehumidity) are inconsistent.
>
> Exist any problem running this type?
>
> Thanks !!!
>
>
> _______________________________________________
> TRNSYS-users mailing list
> TRNSYS-users at cae.wisc.edu <mailto:TRNSYS-users at cae.wisc.edu>
> https://mailman.cae.wisc.edu/listinfo/trnsys-users
>
>
> --
> ***************************
> 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 at tess-inc.com <mailto:d.bradley at tess-inc.com>
>
> http://www.tess-inc.com
> http://www.trnsys.com
>
>
> --Forwarded Message Attachment--
> From: d.bradley at tess-inc.com
> CC: trnsys-users at cae.wisc.edu
> To: mattia.rio at mail.polimi.it
> Date: Wed, 6 Jun 2012 14:14:47 -0500
> Subject: Re: [TRNSYS-users] Shading groups
>
> Mattia,
> I think you will have to be a little creative here. Shading devices
> in Trnsys3D are assumed to be opaque as you know so I don't think you
> can define the shading surface in there. You could use Type34, which
> models simple overhangs and/or wingwalls. That model also assumes an
> opaque shader but it gives outputs for various shading fractions and
> view factors. You may be able to use those and the unshaded radiation
> from your weather component to get an estimate of the radiation that
> comes through your not-quite-opaque device. Lastly, Type56 allows you
> to enter a shading factor for any given window. You may be able to
> treat your shaders in that manner.
>
> Unfortunately, there is not a direct way to treat semitransparent
> shaders unless you would care to modify Type34.
> Kind regards,
> David
>
>
> On 6/6/2012 10:11, MATTIA ANDREA RIO wrote:
>
> Hi!!! i have a little problem with my imported 3d model from
> trnsys 3d plug-in for sketchup.
>
> I have posted a picture that show my 3d model in sketchup; so, as
> you can see, all of the triangular surfaces (into red circle), are
> made in perforated corten steel, and i need to give a shading
> coefficient to their, otherwise the program will do the
> simulations considering the shading surfaces opaque; but actually
> they are not matt.
>
> if someone have any ideas about how I can do.....
>
> ----------------------------------------------------------------
> This message was sent using IMP, the Internet Messaging Program.
>
>
>
> _______________________________________________
> TRNSYS-users mailing list
> TRNSYS-users at cae.wisc.edu <mailto:TRNSYS-users at cae.wisc.edu>
> https://mailman.cae.wisc.edu/listinfo/trnsys-users
>
>
> --
> ***************************
> 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 at tess-inc.com <mailto:d.bradley at tess-inc.com>
>
> http://www.tess-inc.com
> http://www.trnsys.com
>
>
> --Forwarded Message Attachment--
> From: d.bradley at tess-inc.com
> CC: trnsys-users at cae.wisc.edu
> To: damien.casetta at gmail.com
> Date: Wed, 6 Jun 2012 14:27:41 -0500
> Subject: Re: [TRNSYS-users] Water-to-water heat pump - Heat rate to
> load control
>
> Damien,
> In my experience, there are relatively few heat pumps available on
> the market that can do what you are trying to do. Most heat pumps have
> a fairly fixed capacity (some have multiple stages) so that they have
> an easier time maintaining a fixed temperature rise than they do in
> maintaining a fixed temperature outlet. There is at least one notable
> exception to this; an air-to-water heat pump that has a variable speed
> compressor that allows it to modulate and maintain a target outlet
> temperature.
>
> Type927 is a temperature level control device meaning that it is
> looking for inlet water conditions on both sides and for a control
> signal. If you have obtained your heating loads from some other
> software tool, I would recommend that you read them into TRNSYS using
> Type9 and impose them on a water stream using Type682 from the TESS
> Loads and Structures library. I would then place a thermostat sensing
> water return temperature in the loop and I would use its output to
> turn on the loop pump and the Type927 heat pump. You will not get a
> constant supply temperature of course but in reality, a single stage
> (or even multi stage) heat pump can't really give you a constant
> supply temperature; it can only give you a supply temperature that
> hovers around a set point.
>
> If you are using Type56 to generate your building's heating demand,
> I would take it out of energy rate control (ie turn OFF the automatic
> heating and cooling types in TRNBuild), and allow the zone
> temperatures to float. I would then use a thermostat watching the zone
> air temperature and some kind of delivery device (a fan coil, radiant
> floors, etc.) to deliver the hot water from the Type927 to the zone.
>
> Kind regards,
> david
>
>
> On 6/6/2012 12:20, Damien Casetta wrote:
>
> Hi,
>
> I am trying to handle this problem by controlling the temperature.
> Let me remind you that I want to control the heat load of an heat
> pump in heating mode.
>
> Here is how I am trying to proceed :
>
> - I control the temperature exiting the heat pump
> - I fix a temperature set point (with an aquastat - heating mode)
> at 50 C.
> - I vary the supply temperature (entering the heat pump) according
> to the heating demand.
>
> The heating demand is based on hourly loads.
>
> What do you think about it?
>
> I am not very satisfied but I will give it a try. I am sure there
> is a much simpler way to do it.
>
>
> Thanks in advance for your help.
>
> Best regards,
>
> On 1 June 2012 18:10, Damien Casetta <damien.casetta at gmail.com
> <mailto:damien.casetta at gmail.com>> wrote:
>
> Hi,
>
> I am modelling a ground-source heat pump system including a
> water-to-water heat pump (type 927), a borehole heat
> exchanger (type 557b) and a building demand profile.
>
> I have read a couple of messages in the archives about this
> topic but I haven´t understood correctly the few addressing my
> specific issue.
>
> Here is my point. I assume the heat pump to meet the building
> demand. The aim is then to force the heat pump load and
> observe how the system behaves (COP, ground loop fluid
> temperatures).
>
> I would be able to do this with an external MATLAB code (with
> COP values interpolated from catalog data) but it would be a
> shame not to harness TRNSYS potential (there is no need to
> re-invent the wheel as I read in a previous message).
>
> Let me put in other words: how to control a heat pump load?
>
> I have read about a trick to handle this, with a "lump"
> temperature but I don't get the idea behind it. Any other
> explanations is welcomed.
>
>
>
> Thanks in advance,
>
> Best regards,
>
>
> --
> *Damien Casetta*
>
> *Chalmers University of Technology *| Energy and Environment|
> Exchange student
> *INSA Lyon* Génie Energétique et Environnement | Elève ingénieur
>
> +46.7.60.66.31.45
> +33.6.71.78.03.75
>
>
>
>
> --
> *Damien Casetta*
>
> *Chalmers University of Technology *| Energy and Environment|
> Exchange student
> *INSA Lyon* Génie Energétique et Environnement | Elève ingénieur
>
> +46.7.60.66.31.45
> +33.6.71.78.03.75
>
>
>
> _______________________________________________
> TRNSYS-users mailing list
> TRNSYS-users at cae.wisc.edu <mailto:TRNSYS-users at cae.wisc.edu>
> https://mailman.cae.wisc.edu/listinfo/trnsys-users
>
>
> --
> ***************************
> 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 at tess-inc.com <mailto:d.bradley at tess-inc.com>
>
> http://www.tess-inc.com
> http://www.trnsys.com
>
>
> _______________________________________________
> TRNSYS-users mailing list
> TRNSYS-users at cae.wisc.edu
> https://mailman.cae.wisc.edu/listinfo/trnsys-users
--
***************************
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 at tess-inc.com
http://www.tess-inc.com
http://www.trnsys.com
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