2011/7/22 <trnsys-users-request@cae.wisc.edu>
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Today's Topics:
1. Re: Superheated Steam Properties (Jeff Thornton)
2. Re: sloping surfaces (David BRADLEY)
3. Re: Number of Labels (David BRADLEY)
---------- 已转发邮件 ----------
From: "Jeff Thornton" <thornton@tess-inc.com>
To: farah.gammoh@industrial-solar.de, trnsys-users@cae.wisc.edu
Date: Thu, 21 Jul 2011 12:26:44 -0500 (CDT)
Subject: Re: [TRNSYS-users] Superheated Steam Properties
Farah,
The steam_props subroutine does subcooled, saturated and superheated steam. Check the documentation for the details. To get the enthalpy, simply provide two state properties to the subroutine (T and P, T and S, etc.)
Jeff
Jeff Thornton
President - TESS, LLC
22 North Carroll Street - Suite 370
Madison WI 53703 USA
Phone: 608-274-2577
Fax: 608-278-1475
E-mail: thornton@tess-inc.com
Web: www.tess-inc.com
----- Original Message -----
From: "Farah Gammoh" <farah.gammoh@industrial-solar.de>
Sent: Thu, July 21, 2011 11:25
Subject: [TRNSYS-users] Superheated Steam Properties
---------- 已转发邮件 ----------
From: David BRADLEY <d.bradley@tess-inc.com>
To: "Marcus.Joppich" <Marcus.Joppich@fh-zwickau.de>
Date: Fri, 22 Jul 2011 09:33:18 -0500
Subject: Re: [TRNSYS-users] sloping surfaces
Marcus,
Vertical walls should have a slope of 90, not a slope of zero. Slopes are measured from the horizontal. A zero slope indicates a horizontal surface.
Kind regards,
david
On 7/21/2011 08:01, Marcus.Joppich wrote:Hello David,
thank you for your answer. I´ve tried it. The following steps were performed:
I defined 6 orientations of walls to external: Northwest (Wall to external)/ Southeast (Wall to external)/ Northeast (Wall to external)/ Northwest with a slope of 37 degrees (sloping roof)/ Southeast with a slope of 37 degrees (sloping roof)/ Northeast with a slope of 37 degrees (sloping roof).
At Type109 I defined 6 surfaces with the following parameters:
Surface1/Slope of surface 0/Azimuth of surface 225
Surface2/Slope of surface 0/Azimuth of surface 135
Surface3/Slope of surface 0/Azimuth of surface 315
Surface4/Slope of surface 37/Azimuth of surface 225
Surface5/Slope of surface 37/Azimuth of surface 135
Surface6/Slope of surface 37/Azimuth of surface 315
Then I connected the outputs with the inputs by Type56.
Is it the right way?
I get a fatal error: “Error in automatic heat transfer calculation for surface 1 or its adjacent surface!: Automatic heat transfer calculation is only allowed on surfaces within a zone. Please check building input file (.bui)”, but I think it has a different reason.
Thank you for your help.
Regards, Marcus
Von: David BRADLEY [mailto:d.bradley@tess-inc.com]
Gesendet: Mittwoch, 20. Juli 2011 19:12
An: Marcus.Joppich
Cc: trnsys-users@cae.wisc.edu
Betreff: Re: [TRNSYS-users] sloping surfaces
Marcus,
It depends somewhat on what component you are using to model the attic. However, almost without exception, you need to define the slope and azimuth of the attic roof surfaces in your weather component (Type15 probably) and then pass the appropriate solar radiation outputs from that component to the appropriate inputs of your building component.
Regards,
David
On 7/20/2011 06:57, Marcus.Joppich wrote:Hello TRNSYS-users,
I try to simulate few rooms in an attic. I don´t understand how I can describe a sloping surface (like a sloping roof) with TRNSYS. Maybe you can help me.
Thanks for your time.
Marcus
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--***************************David BRADLEYPrincipalThermal Energy Systems Specialists, LLC22 North Carroll Street - suite 370Madison, WI 53703 USAP:+1.608.274.2577F:+1.608.278.1475d.bradley@tess-inc.comhttp://www.tess-inc.comhttp://www.trnsys.com-- *************************** 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
---------- 已转发邮件 ----------
From: David BRADLEY <d.bradley@tess-inc.com>
To: Baboo Gowreesunker <Baboo.Gowreesunker@brunel.ac.uk>
Date: Fri, 22 Jul 2011 09:39:19 -0500
Subject: Re: [TRNSYS-users] Number of Labels
Baboo,
I think that limitation is only in the Studio. TRNSYS components can have as many labels as needed. If you can give me a bit more information about what you are using the labels for, I might be able to suggest a workaround. For example, a lot of the TRNSYS printer components (Type25, Type49, Type65) do not need input initial values so instead we treat those as labels.
Best,
David
On 7/20/2011 10:40, Baboo Gowreesunker wrote:_______________________________________________ TRNSYS-users mailing list TRNSYS-users@cae.wisc.edu https://mailman.cae.wisc.edu/listinfo/trnsys-usersCan we add more than 5 labels in TRNSYS components
Lesh
-- *************************** 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
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