Dear Sir,
I need one sample of simulation of current HVAC system by TRNSYS. Kindly please send to me .
Thanks
Mehdi Salehi
________________________________
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Sent: Tuesday, July 2, 2013 1:00 AM
Subject: TRNSYS-users Digest, Vol 103, Issue 2
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Today's Topics:
1. Re: radiator type 1231 (David BRADLEY)
2. Re: (no subject) (David BRADLEY)
3. Re: (no subject) (Alasdair Morton)
Enyuan,
Type1231 was developed based on correlations to model a heating
radiator, not a cooling radiator and it is likely that the
correlations simply do not hold true in cooling applications. I
would look to a different model. I would also be a bit careful;
most in-room cooling radiators operate above the dewpoint because
getting condensation all over their surfaces causes other problems.
As for connecting Type1231's output to Type56, define an energy
gain input (as opposed to a constant value or a schedule) in the
zone that contains the radiator. Then connect the Type1231 heat
transfer output to the gain input. I would recommend that you split
the gain about 80% convective and 20% radiative. Despite their name,
most radiators do significant heating by convection.
Best,
David
On 6/28/2013 13:34, Enyuan Hu wrote:
Dear all,
>
>
>I'm trying to model radiant cooling using the type 1231 radiator in TESS library for TRNSYS 17. The model may be loose for cooling as condensation is not considered, but we want to have some idea of the effect when only convection and radiation are dominant. I'm looking for answers to two questions:
>
>
>1. Is there any example or tutorial that shows how the radiator can be used with type 56, or how they communicate?
>
>
>2. In searching previous threads on using the radiator, it seemed that there's restriction on the inlet water temperature, that it, it must be at least 0.5C above the room temperature. Can we circumvent this restriction?
>
>
>Thanks.
>Enyuan
>
>
>_______________________________________________
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
Alasdair,
Are you getting the "component load failed" message when you try
to drag an instance of Type230 out into your Assembly Panel or when
you try to run the simulation? When I try to duplicate your steps, I
get the "component load failed" message when I try to add Type230 to
the project. The reason for that is that Type230's proforma was
created with Trnsys17 and so is not backward compatible with
Trnsys16. Type230 itself (the DLLs and the source code) both look to
me as though they will work in v16 as well as in v17 so you could
open the source code and determine what the parameters, inputs, and
outputs of the model are, then create a proforma for Trnsys16.
Best,
David
On 7/1/2013 09:06, Alasdair Morton wrote:
>Hello all,
>
>
>I have having difficulty using a component from the user library. The component is Type 230 and the files I am using are accessed from http://sel.me.wisc.edu/trnsys/trnlib/library16.htm.
>
>
>I have placed the .tmf and .bmp files in the location /TRNSYS16_1/Studio/Proformas/MyComponents and the .dll file in TRNSYS16_1/UserLib/ReleaseDLLs. The components appears in the studio as expected but when I try to insert it into my project the error message "Component load failed" is given.
>
>
>Can anyone suggest where I am going wrong?
>
>
>I am working with TRNSYS 16.01.0003.
>
>
>Regards,
>Alasdair Morton
>
>
>_______________________________________________
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
Hi David,
Yes the error message appears when I drag the component onto the Assembly Panel as you suggest. I will try to do as you suggest, thank you for the advice!
Regards,
Alasdair
________________________________
From: David BRADLEY [d.bradley at tess-inc.com]
Sent: 01 July 2013 17:38
To: TRNSYS users mailing list at the Solar Energy Lab, UW-Madison
Cc: Alasdair Morton
Subject: Re: [TRNSYS-users] (no subject)
Alasdair,
Are you getting the "component load failed" message when you try to drag an instance of Type230 out into your Assembly Panel or when you try to run the simulation? When I try to duplicate your steps, I get the "component load failed" message when I try to
add Type230 to the project. The reason for that is that Type230's proforma was created with Trnsys17 and so is not backward compatible with Trnsys16. Type230 itself (the DLLs and the source code) both look to me as though they will work in v16 as well as in
v17 so you could open the source code and determine what the parameters, inputs, and outputs of the model are, then create a proforma for Trnsys16.
Best,
David
On 7/1/2013 09:06, Alasdair Morton wrote:
>Hello all,
>
>
>I have having difficulty using a component from the user library. The component is Type 230 and the files I am using are accessed from http://sel.me.wisc.edu/trnsys/trnlib/library16.htm.
>
>
>I have placed the .tmf and .bmp files in the location /TRNSYS16_1/Studio/Proformas/MyComponents and the .dll file in TRNSYS16_1/UserLib/ReleaseDLLs. The components appears in the studio as expected but when I try to insert it into my project the error message "Component load failed" is given.
>
>
>Can anyone suggest where I am going wrong?
>
>
>I am working with TRNSYS 16.01.0003.
>
>
>Regards,
>Alasdair Morton
>
>
>_______________________________________________
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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