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Today's Topics:
1. Heating?radiative part & ideal heating (??)
---------- 已转发邮件 ----------
From: 王洋 <wanghongyang1767@gmail.com>
To: trnsys-users@cae.wisc.edu
Date: Thu, 17 Feb 2011 22:35:16 +0100
Subject: [TRNSYS-users] Heating：radiative part & ideal heating
Dear all,1. Please tell me what's meaning of RADIATIVE PART in HEATING option? If the heating are Radiator and Convector, how to define this RADIATIVE PART? What's percent to set? 0 or other?2. I defined a set point indoor temperature:20C from 8 am to 6 pm, other time is 18 C in the test room . I used the HEATING to realize it, but the heating is ideal heating. Please tell me what's the meaning of ideal heating?The result is the indoor temperature can get to the set point at once and no time delay, so I cann't get the THERMAL TIME CONSTANT of the test room. But my professor let me use TRNSYS to verify the result of using TRNSYS to calculate the time constant and actual measurement test room result of time constant. Please tell me how to get the thermal time constant of the test room using TRNSYS? Or how to explain to my professor the ideal heating?Many thanks!br.wang2011/2/17 <trnsys-users-request@cae.wisc.edu>
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Today's Topics:
1. Re: PV Powered electrical heat pump (David BRADLEY)
2. Re: length and witdh from the collector area (David BRADLEY)
3. Re: type2b Controller (David BRADLEY)
4. WALL TRANSFERFUNCTION CALCULATIONS &TIMEBASE (??)
---------- 已转发邮件 ----------
From: David BRADLEY <d.bradley@tess-inc.com>
To: gzlv <gzlv@sjtu.edu.cn>
Date: Wed, 16 Feb 2011 16:11:13 -0600
Subject: Re: [TRNSYS-users] PV Powered electrical heat pump
Guangzhao,
You will find various heat pump models (air-to-air, water-to-air, air-to-water, and water-to-water) in the TESS HVAC Library. I would recommend running your Type56 building in temperature level control instead of letting it calculate cooling load. You'll need a thermostat model to turn on and off the heat pump but then your heat pump model will report the required power, which you can match up to your PV array output. You may need some battery storage in case your cooling load does not match up perfectly with the electricity supplied by your PV.
Kind regards,
David
On 2/16/2011 01:57, gzlv wrote:Hello, I am trying to model a PV powered air conditioning system. I want to know which type can be treated as an electrical heat pump that can get cooling load and heating load from type 56. I want to conect it with type 48.2011-02-16
_______________________________________________ TRNSYS-users mailing list TRNSYS-users@cae.wisc.edu https://mailman.cae.wisc.edu/listinfo/trnsys-usersGuangzhao Lv-- *************************** 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: "Sancho,Fernando" <fsancho@sonnenwaermeag.de>
Date: Wed, 16 Feb 2011 16:38:24 -0600
Subject: Re: [TRNSYS-users] length and witdh from the collector area
Fernando,
I think you'd be best off trying different combinations of modules in series and in parallel. I do not know of any flat-plate collector models that allow you to specify the panel length. Most of them rely on a quadratic efficiency curve that is typically experimentally determined for a given collector configuration. They do not do first-principals computations of the collector fin efficiency equations. If you are looking for a reference that will give you information on how to compute such things, I would recommend "Solar Engineering of Thermal Processes"
Regards,
David
On 2/16/2011 04:48, Sancho,Fernando wrote:_______________________________________________ TRNSYS-users mailing list TRNSYS-users@cae.wisc.edu https://mailman.cae.wisc.edu/listinfo/trnsys-usersHello TRNSYS-users,
I’m making simulations with plastic collector. Many from the commercial models can be resized, so it’s almost free how to configurate the collector area. I would like to find an optimal distribution, dependent of course on Radiation, temperatures etc…, basically how long and width for a minimum output temperature of the fluid. Or just what is the best for a certain situation 10m*30m or 30m*10m ?.
I ´ve already done my calculations with Excel and know that longer means higher output temperature but lower energy gain… but with trnsys it’s difficult to face the problem ,
do I take a standard unit and probe around different series und parallel distributions L ?
Do type 553 and 559 in TESS TRn17 do that; difference width and length (I didn’t find it in the general pdf… and have just occasionally access to TRNSYS17)?
Any advice or experience?
So Thanks a lot!!!!!
Mit freundlichen Grüßen
Fernando Sancho Márquez
PHÖNIX SonnenWärme AG
____________________________________________
PHÖNIX Sonnenwärme AG
Ostendstr. 1D-12459 Berlin
-- *************************** 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: Hanani Abd Wahab <ha65@waikato.ac.nz>
Date: Wed, 16 Feb 2011 16:06:48 -0600
Subject: Re: [TRNSYS-users] type2b Controller
Hanani,
I know nothing about programming in Simulink but you can probably take a look at the source code for type2 (c:\TrnsysXX\SourceCode\Types\Type2.for) using a text editor and understand better how it makes use of the inputs.
regards,
David
On 2/15/2011 21:55, Hanani Abd Wahab wrote:
Hi,
I am trying to build the same type2b controller in Simulink. What I
understand is I can create using simple relay control in Simulink
model.In relay model, I just set switch on point 10, switch off point
2 (as same as dead band value in TRNSYS). 'Th' I set as input to
relay. But how about Tl and Tin? In type2b there is 6 inputs consist
of Th,Tl,Tin, Input control function , Upper dT dan Lower dT.
Really appreciate any help or idea...
Thanks& Regards
--
***************************
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: 王洋 <wanghongyang1767@gmail.com>
To: trnsys-users@cae.wisc.edu
Date: Thu, 17 Feb 2011 18:21:44 +0100
Subject: [TRNSYS-users] WALL TRANSFERFUNCTION CALCULATIONS &TIMEBASE
Dear all,
I met this error:
***** WALL TRANSFERFUNCTION CALCULATIONS *****
UNABLE TO FIND A ROOT AFTER INDICATION THAT A ROOT EXISTED
CHECK THE WALL TYPE AFTER THE LAST CALCULATED WALL
OFTEN THE WALL CAPACITY IS TO SMALL TO CALCULATE A TRANSFER FUNCTION !
CHECK ALSO YOUR TIMEBASE !
Attached is INF file, Please check it!
And I make the timebase larger, but it still doesn't work.
Many thanks!
Br.
wang
2011/2/16 <trnsys-users-request@cae.wisc.edu>
Send TRNSYS-users mailing list submissions to
trnsys-users@cae.wisc.edu
To subscribe or unsubscribe via the World Wide Web, visit
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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. length and witdh from the collector area (Sancho,Fernando)
2. Re: g95 compiler (Francois Badinier)
---------- 已转发邮件 ----------
From: "Sancho,Fernando" <fsancho@sonnenwaermeag.de>
To: <trnsys-users@cae.wisc.edu>
Date: Wed, 16 Feb 2011 11:48:55 +0100
Subject: [TRNSYS-users] length and witdh from the collector area
Hello TRNSYS-users,
I’m making simulations with plastic collector. Many from the commercial models can be resized, so it’s almost free how to configurate the collector area. I would like to find an optimal distribution, dependent of course on Radiation, temperatures etc…, basically how long and width for a minimum output temperature of the fluid. Or just what is the best for a certain situation 10m*30m or 30m*10m ?.
I ´ve already done my calculations with Excel and know that longer means higher output temperature but lower energy gain… but with trnsys it’s difficult to face the problem ,
do I take a standard unit and probe around different series und parallel distributions L ?
Do type 553 and 559 in TESS TRn17 do that; difference width and length (I didn’t find it in the general pdf… and have just occasionally access to TRNSYS17)?
Any advice or experience?
So Thanks a lot!!!!!
Mit freundlichen Grüßen
Fernando Sancho Márquez
PHÖNIX SonnenWärme AG
____________________________________________
PHÖNIX Sonnenwärme AG
Ostendstr. 1D-12459 Berlin
---------- 已转发邮件 ----------
From: "Francois Badinier" <francois.badinier@icax.co.uk>
To: <mabadie@univ-lr.fr>, <trnsys-users@cae.wisc.edu>
Date: Wed, 16 Feb 2011 15:02:13 -0000
Subject: Re: [TRNSYS-users] g95 compiler
Marc
If you still want to use g95, an alternative is to define T0, Tfinal and
Timestep as parameters in our new component. The only drawback is that you
have to be careful to change those values whenever you change them in the
simulation studio.
Regards,
François Badinier
Development Engineer
ICAX Ltd
1 Berry Street
London EC1M 5PS
francois.badinier@icax.co.uk
www.icax.co.uk
-----Original Message-----
From: trnsys-users-bounces@cae.wisc.edu
[mailto:trnsys-users-bounces@cae.wisc.edu] On Behalf Of mabadie@univ-lr.fr
Sent: 14 February 2011 11:57
To: trnsys-users@cae.wisc.edu
Subject: Re: [TRNSYS-users] g95 compiler
Danny and David,
I actually successfully used the G95 compiler with TRNSYS 16 to create
new components. However, i was not able to properly used TRNSYS
variables (such as getSimulationTime()) in my TYPES. The only solution
i found was to stop using this compiler and buying Intel Fortran v11.
I hope you will find a way to fix that problem as it is nice to have
the choice of a free/light fortran compiler.
Best,
-- Marc O. Abadie
David BRADLEY <d.bradley@tess-inc.com> a écrit :
> Danny,
> getSimulationTime is a function that is defined in the data module
> called "TrnsysFunctions." When compiling an external Type in either
> the Compaq or the Intel compilers, I have to make sure that the
> compiler is set to look for data modules (sometimes called MOD
> files) in the ..\Trnsys17\Compilers\IVF111\Debug\ directory or else
> copy them to some other place where they can be found by the
> compiler. My understanding is that this tells the compiler "don't
> worry, even though I haven't defined this function called
> getSimulationTime() in my external Type242.dll, you'll find that
> function during run-time because my dll will be called by a dll in
> which the function is defined"
>
> I don't know how the G95 compiler handles settings for where to
> look for *.mod files but this is not specific to Trnsys17, there
> were a number of TrnsysFunctions called by Types in Trnsys16 as
> well. We have just expanded their use in Trnsys17.
> best,
> David
>
>
> On 2/11/2011 11:12, Danny Jonas wrote:
>>
>> Dear TRNSYS users,
>>
>> I have use the directions in the document, but after starting the
>> batch file to compile my own type I've received the following
>> message:
>>
>> "In file Type201.for:72
>>
>> Time=getSimulationTime<>
>>
>> Error: Function 'getsimulationtime' at <1> has no implicit type"
>>
>> could the error be associated with using TRNSYS17?
>>
>> Using the example (type242), I can build the type242.dll.
>>
>> I'm now trying to use C++, till now it works fine. But I still
>> don't understand why it doesn't work with the batch file as fortran
>> code....
>>
>> Thanks a lot,
>>
>> Best Regards,
>>
>> Danny
>>
>> -----Ursprüngliche Nachricht-----
>>
>> Von: Daniel Bergey [mailto:daniel@buildingscience.com]
>>
>> Gesendet: Mittwoch, 9. Februar 2011 21:14
>>
>> An: Danny Jonas
>>
>> Betreff: Re: [TRNSYS-users] g95 compiler
>>
>> I have successfully compiled a couple of components using
>> directions in the attached document. I don't recall the URL whence
>> I downloaded it originally. Sorry about the doc format; let me
>> know if I should convert it.
>>
>> Daniel
>>
>> On Fri, Feb 04, 2011 at 01:33:49PM +0100, Danny Jonas wrote:
>>
>>> Dear TRNSYS users,
>>
>>>
>>
>>>
>>
>>>
>>
>>> I want to use the free g95 compiler to create my own components
>>> in TRNSYS.
>>
>>>
>>
>>>
>>
>>>
>>
>>> I have found the following message in the TRNSYS-users Archives:
>>
>>>
>>
>>>
>>
>>>
>>
>>>
>>
>>> [1]http://mailman.cae.wisc.edu/pipermail/trnsys-users/2008/003957.html
>>
>>>
>>
>>>
>>
>>>
>>
>>> with the following link:
>>
>>>
>>
>>>
>>
>>>
>>
>>> [2]http://software.cstb.fr/main/articles.asp?langue=us
>>
>>>
>>
>>>
>>
>>>
>>
>>> But this page no longer exists.
>>
>>>
>>
>>>
>>
>>>
>>
>>> Can someone send a link where I can download this example?
>>
>>>
>>
>>>
>>
>>>
>>
>>>
>>
>>>
>>
>>> Thanks in advance,
>>
>>>
>>
>>>
>>
>>>
>>
>>>
>>
>>>
>>
>>> Danny
>>
>>>
>>
>>>
>>
>>>
>>
>>> References
>>
>>>
>>
>>> Visible links
>>
>>> 1.
http://mailman.cae.wisc.edu/pipermail/trnsys-users/2008/003957.html
>>
>>> 2. http://software.cstb.fr/main/articles.asp?langue=us
>>
>>> _______________________________________________
>>
>>> TRNSYS-users mailing list
>>
>>> TRNSYS-users@cae.wisc.edu <mailto:TRNSYS-users@cae.wisc.edu>
>>
>>> https://mailman.cae.wisc.edu/listinfo/trnsys-users
>>
>>
>> _______________________________________________
>> TRNSYS-users mailing list
>> TRNSYS-users@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@tess-inc.com
>
> http://www.tess-inc.com
> http://www.trnsys.com
>
>
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