[TRNSYS-users] reinstalling bugs of TRNSYS

2011/9/21 <trnsys-users-request@cae.wisc.edu>

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Today's Topics:

1. Insulated window panel (Richard Flarend)
2. Re: Type 2b controller dead band problem. (Michael Bissett)
3. Re: Insulated window panel (Matt Duffy)
4. Re: Type 56 active layer accuracy, alternatives (Matt Duffy)
5. Re: Type 2b controller dead band problem. (Matt Duffy)

---------- 已转发邮件 ----------
From: Richard Flarend <ref7@psu.edu>
To: trnsys-users@cae.wisc.edu
Date: Tue, 20 Sep 2011 15:43:47 -0400
Subject: [TRNSYS-users] Insulated window panel
Can someone point me to where I can find a pre-defined window glazing type (in TRNBUILD) for a rigid fiberglass board window panel? I assume there is such a thing so that I don't have to make this a 'wall'.

Thanks,
Richard Flarend

---------- 已转发邮件 ----------
From: Michael Bissett <mikebiscuit@gmail.com>
To: Angel Carrera <angel.carrera@aiguasol.coop>
Date: Tue, 20 Sep 2011 19:44:17 +0200
Subject: Re: [TRNSYS-users] Type 2b controller dead band problem.
Hi

I have read the information, I have tried to increase parameter 1, I have also looped the controller to its self. Still it does not work

I have also tried changing many other parameters and have spent a lot of time on this problem. still with no luck.

Any other suggestions?

Mike

On Tue, Sep 20, 2011 at 1:59 PM, Angel Carrera <angel.carrera@aiguasol.coop> wrote:

Mike,

you should connect the output control function of the controller to its own input control function (Input number 4). Also, you should increase the value of parameter 1, to the default value at least (the influence of this parameter is explained at the type 2 documentation, I recommend you to read it, together with the generic section for controllers at the trnsys help)

Regards

Angel

2011/9/19 Michael Bissett <mikebiscuit@gmail.com>

Dear Trnsys

I am experiencing problems with a simple type 2b controller.

I am using a solar collector type 564b

I am trying to compare the temperature of the output of the collector with output of the tank, getting a temperature difference. I have set the dead band from 4-10 degrees C.

In the simulation as the temperature rises to 10degrees difference, the control signal is 1 switching the pump on correctly. but after this the controller only switches every time step. I have tried shortening the time step... and changing other parameters.. still with no success.

I have attached the file.

Yours Sincerely

Mike Bissett

Department of Electrical Engineering

University of Cape Town

South Africa

_______________________________________________
TRNSYS-users mailing list
TRNSYS-users@cae.wisc.edu
https://mailman.cae.wisc.edu/listinfo/trnsys-users

--
Àngel Carrera

Responsable I+D
Àrea tècnica

Sistemes Avançats d'Energia Solar Tèrmica SCCL
C/ Roger de Llúria, 29 3r 2a 08009 Barcelona
Tel: (+34) 93 342 47 55 Fax: (+34) 93 342 47 56

angel.carrera@aiguasol.coop
http://www.aiguasol.coop

---------- 已转发邮件 ----------
From: "Matt Duffy" <duffy@tess-inc.com>
To: "Richard Flarend" <ref7@psu.edu>, trnsys-users@cae.wisc.edu
Date: Wed, 21 Sep 2011 07:36:40 -0500 (CDT)
Subject: Re: [TRNSYS-users] Insulated window panel
Richard,

Yes, I would probably make that a 'mass-less' resistive wall in TRNBuild especiallly if there is no or little light passing through the fiberglass panel.

Best regards,

Matt Duffy
----- Original Message -----
From: "Richard Flarend" <ref7@psu.edu>
Sent: Tue, September 20, 2011 14:43
Subject: [TRNSYS-users] Insulated window panel
Can someone point me to where I can find a pre-defined window glazing  
type (in TRNBUILD) for a rigid fiberglass board window panel?  I  
assume there is such a thing so that I don't have to make this a 'wall'.

Thanks,
Richard Flarend

_______________________________________________
TRNSYS-users mailing list
TRNSYS-users@cae.wisc.edu
https://mailman.cae.wisc.edu/listinfo/trnsys-users
---------- 已转发邮件 ----------
From: "Matt Duffy" <duffy@tess-inc.com>
To: mathieu.levesque@polymtl.ca, trnsys-users@cae.wisc.edu
Date: Wed, 21 Sep 2011 08:20:05 -0500 (CDT)
Subject: Re: [TRNSYS-users] Type 56 active layer accuracy, alternatives
Mathieu

You might also want to consider one of the slab components in the TESS Ground Coupling Library as the source code is provided, and the heat flux is finite difference and not conduction transfer function method. The semi-empirical method in Type56 has limited configurations, and other than the TRNBuild documentation, I am not sure how it is calculated.

Best regards,

Matt Duffy
----- Original Message -----
From: "Mathieu Lévesque" <mathieu.levesque@polymtl.ca>
Sent: Mon, September 19, 2011 15:51
Subject: [TRNSYS-users] Type 56 active layer accuracy, alternatives
Dear all,

I'm currently studying the coupling between thermally activated building systems (TABS), or floor heating/cooling, and geothermal heat pumps. I chose using the active layer in type 56, but I recently read in an article by T. Weber (An optimized RC-network for thermally activated building components, Building and Environment, 2005) that "...it will loose a part of its accuracy for harmonic temperature fluctuations in the pipe having a period lower than 10 h". However, this sentence refers to an article that has never been published.

The calculation of the energy storage in the slab is very important for my study. However, the validation of the active layer in type 56 refers to a comparison of the heat fluxes at the slab's upper and lower surface and the mean temperature at pipe level.

Therefore, is there a! known accuracy problem with the energy storage calculations in type 5 6's active layer, usually for high temperature or flow rate fluctuations?

Also, except from type 56's active layer and type 360 (Floor heating and hypocaust), are there other types available for floor heating/cooling?

Thank you!

Mathieu Lévesque

Master student

Département de génie mécanique

École Polytechnique de Montréal

mathieu.levesque@polymtl.ca
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---------- 已转发邮件 ----------
From: "Matt Duffy" <duffy@tess-inc.com>
To: "Michael Bissett" <mikebiscuit@gmail.com>, angel.carrera@aiguasol.coop
Date: Wed, 21 Sep 2011 08:33:42 -0500 (CDT)
Subject: Re: [TRNSYS-users] Type 2b controller dead band problem.

Dear Michael,

Please make sure that you are using a reasonable timestep such as 0.125 hr (type in terms of hours to avoid problems with the Studio's minute conversion trucation). Also, make sure that you have the latest TRNSYS and TESS Libraries versions as well.

Best regards,

Matt Duffy
----- Original Message -----
From: "Michael Bissett" <mikebiscuit@gmail.com>
Sent: Tue, September 20, 2011 12:44
Subject: Re: [TRNSYS-users] Type 2b controller dead band problem.
Hi

I have read the information, I have tried to ! increase parameter 1, I have also looped the controller to its self. Still it does not work

I have also tried changing many other parameters and have spent a lot of time on this problem. still with no luck.

Any other suggestions?

Mike

On Tue, Sep 20, 2011 at 1:59 PM, Angel Carrera <angel.carrera@aiguasol.coop> wrote:

Mike,

you should connect the output control function of the controller to its own input control function (Input number 4). Also, you should increase the value of parameter 1, to the default value at least (the influence of this parameter is explained at the type ! 2 documentation, I recommend you to read it, together with the generic section for controllers at the trnsys help)

Regards

Angel

2011/9/19 Michael Bissett <mikebiscuit@gmail.com>

Dear Trnsys

I am experiencing problems with a simple type 2b controller.

I am using a solar collector type 564b

I am trying to compare the temperature of the output of the collector with output of the tank, getting a temperature difference. I have set the dead band from 4-10 degrees C.

In the simulation as the temperature rises to 10degrees difference, the control signal is 1 switching the pump on! correctly. but after this the controller only switches every time step. I have tried shortening the time step... and changing other parameters.. still with no success.

I have attached the file.

Yours Sincerely

Mike Bissett

Department of Electrical Engineering

University of Cape Town

South Africa
_______________________________________________
TRNSYS-users mailing list
TRNSYS-users@cae.wisc.edu
https://mailman.cae.wisc.edu/listinfo/trnsys-users

--
Àngel Carrera

Responsable I+D
Àrea tècnica

Sistemes Avançats d'Energia Solar Tèrmica SCCL
C/ Roger de Llúria, 29 3r 2a 08009 Barcelona
Tel: (+34) 93 342 47 55 Fax: (+34) 93 342 47 56

angel.carrera@aiguasol.coop
http://www.aiguasol.coop
_______________________________________________
TRNSYS-users mailing list
TRNSYS-users@cae.wisc.edu
https://mailman.cae.wisc.edu/listinfo/trnsys-users
_______________________________________________
TRNSYS-users mailing list
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