[TRNSYS-users] the storage of heat in the room air and building mass
王洋
wanghongyang1767 at gmail.com
Wed Dec 15 06:10:16 PST 2010
Dear all,
I saw one introduction about TRNSYS, there is a sentence:
•
Thermal building model includes heat transfer by conductions, convection and
radiation, heat gains from occupants and equipment, and the storage of heat
in the room air and building mass
What"s meaning of the storage of heat in the room air and building mass?
Does it mean the room and building mass can store the heat? If so, how to
embody its storage of heat? Please take some examples!
Many thanks!
Br.
wang
在 2010年12月15日 下午2:51， <trnsys-users-request at cae.wisc.edu>写道：
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> Today's Topics:
>
> 1. HELP TRNSYS 16 (david.irusta at idom.com)
> 2. Create a final report with TrnEdit (Manu)
> 3. Own height factor of large opening in TRNFlow
> (=?GB2312?B?zfXR8w==?=)
>
>
> ---------- 已转发邮件 ----------
> From: david.irusta at idom.com
> To: trnsys-users at cae.wisc.edu
> Date: Tue, 14 Dec 2010 17:08:49 +0100
> Subject: [TRNSYS-users] HELP TRNSYS 16
> Hi,
>
> After resolve some doubts about how to simulate my building model , now I´m
> triying to use mediterranean meteorology but the extensions are .met and I
> need .tm2
> what can I do? How can I convert? Can I use this extensions in ny model?
>
> On another hand, we want to resolve different kind of buildings( housing,
> office,...), all of them using TABS
> Which is the best way,TRNSYS 16 or TRNSYS LITE? What do you recommend? Why?
>
> Regards
>
> David Irusta
>
>
>
> De: David BRADLEY <d.bradley at tess-inc.com>
> Para: david.irusta at idom.com
> cc: trnsys-users at cae.wisc.edu
> Fecha: 03/12/2010 17:37
> Asunto: Re: [TRNSYS-users] HELP TRNSYS 16
> ------------------------------
>
>
>
> David
>
> -How do you Know if the horizontal wall is floor o ceiling?
> The TRNSYS 16 building model was non-geometric; when you define a
> horizontal surface, the only thing that indicates whether it is a floor or a
> ceiling is the condition that you impose on the opposite side of the
> surface.
> -Creating a Multizone Building,
> when you have to decide the outputs,how can you select a surface(to
> choose for example TOFL) instead of a Thermal zone?
> there are a number of radio buttons across the middle of the window. You
> still select a zone but then you switch to "surface outputs" and you will
> see the available NTYPEs for the surfaces in that zone.
> how can you do a multistorey building??
> The ceiling of one zone is set as wall type "ADJACENT" and you indicate the
> name of the zone above whose floor is the same as that ceiling.
> I´m interested in create a model about TABS (thermal active building
> system) which includes active layers
> -where can I find examples or tutorials with TRNSYS 16?
> I believe that some of the feedback controller examples
> (..trnsys16\Examples\...) show how to use the active layers.
>
> Best,
> David
>
> --
> ***************************
> 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* <d.bradley at tess-inc.com>
>
> *http://www.tess-inc.com* <http://www.tess-inc.com/>
> *http://www.trnsys.com* <http://www.trnsys.com/>
>
>
> ---------- 已转发邮件 ----------
> From: Manu <manuel.tilly at gmail.com>
> To: trnsys-users at cae.wisc.edu
> Date: Tue, 14 Dec 2010 14:29:23 +0100
> Subject: [TRNSYS-users] Create a final report with TrnEdit
> Hi,
>
> I try to use TrnEdit on a project and I want to know if it's possible to
> generate a final report (Word or pdf extension file) withe graphic and text
> comment, juste like SimSol (french application based on TRNSys to dimention
> a solar system).
>
> Thank you
>
> Best regards
>
>
>
>
>
> ---------- 已转发邮件 ----------
> From: 王洋 <wanghongyang1767 at gmail.com>
> To: trnsys-users at cae.wisc.edu
> Date: Wed, 15 Dec 2010 14:50:53 +0100
> Subject: [TRNSYS-users] Own height factor of large opening in TRNFlow
> Dera All,
>
> I have a question about Own height factor of large opening in TRNFlow:
> Our windows are normal casement window. Should it be 1? I think the opening
> is in a vertical wall. Is it right or not?
>
> Many thanks!
>
> Br.
>
> wang
>
> 2010/12/14 <trnsys-users-request at cae.wisc.edu>
>
>> Send TRNSYS-users mailing list submissions to
>> trnsys-users at cae.wisc.edu
>>
>> To subscribe or unsubscribe via the World Wide Web, visit
>> https://www-old.cae.wisc.edu/mailman/listinfo/trnsys-users
>> or, via email, send a message with subject or body 'help' to
>> trnsys-users-request at cae.wisc.edu
>>
>> You can reach the person managing the list at
>> trnsys-users-owner at 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. Re: heat exchangere (David BRADLEY)
>> 2. Re: Strange error when using the equation proforma (David BRADLEY)
>> 3. Re: Strange error when using the equation proforma (David BRADLEY)
>> 4. Re: About building loads calculation in TRNSYS (David BRADLEY)
>>
>>
>> ---------- 已转发邮件 ----------
>> From: David BRADLEY <d.bradley at tess-inc.com>
>> To: trnsys-users at cae.wisc.edu
>> Date: Tue, 14 Dec 2010 15:56:15 -0600
>> Subject: Re: [TRNSYS-users] heat exchangere
>> Elly,
>> If you have the TESS HVAC library, there are a number of heat exchangers
>> with controlled outlet temperature models in there. If not then you will
>> need to use a variable speed pump (Type3) , the heat exchanger, and (most
>> likely) a PID controller (Type23).
>> Best,
>> David
>>
>>
>> On 12/13/2010 15:24, e.nicolazzi at libero.it wrote:
>>
>>>
>>> Dear Transys-user,
>>>
>>> I'm simulating, with trnsys 16, a plate heat exchanger for district
>>> heating
>>> substation. I'm using type 5b, is it correct?
>>> There's a control unit that in function of external temperature and the
>>> hot-
>>> side outlet temperature (secondary pipe) open or close (%) the valve in
>>> the hot-
>>> side inlet temperature (primary pipe).
>>> Can someone tell me how can i model a control unit? which types can i
>>> use?
>>>
>>> Thanks in advance,
>>> Elly
>>>
>>>
>>> _______________________________________________
>>> TRNSYS-users mailing list
>>> TRNSYS-users at cae.wisc.edu
>>> https://www-old.cae.wisc.edu/mailman/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
>>
>>
>>
>>
>> ---------- 已转发邮件 ----------
>> From: David BRADLEY <d.bradley at tess-inc.com>
>> To: a8304506 at graduate.hku.hk
>> Date: Tue, 14 Dec 2010 16:00:22 -0600
>> Subject: Re: [TRNSYS-users] Strange error when using the equation proforma
>> Chun Kwong,
>> You are correct in your understanding of how TRNSYS iterates to solve.
>> However, it has to have somewhere to start so TRNSYS performs a check on all
>> the equations before starting the simulation to make sure that it can solve
>> them. If you wrote a set of equations that said:
>>
>> EQUATIONS 2
>> A = B
>> B = A
>>
>> there would be no way that TRNSYS could ever solve because it would have
>> nowhere to begin the iteration. My guess is that your T_CHWS and T_CHWR
>> equations are too interdependent.
>> Best,
>> david
>>
>>
>> On 12/13/2010 20:38, a8304506 at graduate.hku.hk wrote:
>>
>> Hello, everyone.
>>
>> I am trying to simulate a chiller plant with primary and secondary chilled water
>> pump systems. I use to equation proforma to calculate the chilled water flow
>> and temperature at the supply and return header. However, I get the following
>> error messages:
>>
>> *** Fatal Error at time : 0.000000
>> Generated by Unit : Not applicable or not available
>> Generated by Type : Not applicable or not available
>> TRNSYS Message 420 : The following variable defined in an EQUATIONs or
>> CONSTANTs card could not be solved as this variable depends on either an
>> undefined EQUATION or CONSTANT name or depends on another EQUATION or CONSTANT
>> that cannot be solved. For example A=B and B=A would trigger this error
>> Reported information : T_CHWS
>>
>>
>> *** Fatal Error at time : 0.000000
>> Generated by Unit : Not applicable or not available
>> Generated by Type : Not applicable or not available
>> TRNSYS Message 420 : The following variable defined in an EQUATIONs or
>> CONSTANTs card could not be solved as this variable depends on either an
>> undefined EQUATION or CONSTANT name or depends on another EQUATION or CONSTANT
>> that cannot be solved. For example A=B and B=A would trigger this error
>> Reported information : T_CHWR
>>
>> I am a little bit confused. My understanding is that Trnsys performs the
>> calculation in the equation proforma based on the input and the sequence of the
>>
>> equations as typed in the proforma, and the system performance at each time step
>> is determined component by component which follow the order as indicated in the
>> input file. Hence, should there be any improper formulation, the consequence
>> should generally be non-convergence. Is my interpretation wrong, and how can I
>> solve the problem? Please advise. Thank you!
>>
>> Best Regards
>> LEE, Chun Kwong
>> City University of Hong Knog
>>
>>
>>
>>
>> _______________________________________________
>> TRNSYS-users mailing listTRNSYS-users at cae.wisc.eduhttps://www-old.cae.wisc.edu/mailman/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:+1.608.278.1475d.bradley at tess-inc.com
>> http://www.tess-inc.comhttp://www.trnsys.com
>>
>>
>>
>> ---------- 已转发邮件 ----------
>> From: David BRADLEY <d.bradley at tess-inc.com>
>> To: a8304506 at graduate.hku.hk
>> Date: Tue, 14 Dec 2010 16:00:41 -0600
>> Subject: Re: [TRNSYS-users] Strange error when using the equation proforma
>> Chun Kwong,
>> You are correct in your understanding of how TRNSYS iterates to solve.
>> However, it has to have somewhere to start so TRNSYS performs a check on all
>> the equations before starting the simulation to make sure that it can solve
>> them. If you wrote a set of equations that said:
>>
>> EQUATIONS 2
>> A = B
>> B = A
>>
>> there would be no way that TRNSYS could ever solve because it would have
>> nowhere to begin the iteration. My guess is that your T_CHWS and T_CHWR
>> equations are too interdependent and therefore can't be resolved.
>> Best,
>> david
>>
>>
>> On 12/13/2010 20:38, a8304506 at graduate.hku.hk wrote:
>>
>> Hello, everyone.
>>
>> I am trying to simulate a chiller plant with primary and secondary chilled water
>> pump systems. I use to equation proforma to calculate the chilled water flow
>> and temperature at the supply and return header. However, I get the following
>> error messages:
>>
>> *** Fatal Error at time : 0.000000
>> Generated by Unit : Not applicable or not available
>> Generated by Type : Not applicable or not available
>> TRNSYS Message 420 : The following variable defined in an EQUATIONs or
>> CONSTANTs card could not be solved as this variable depends on either an
>> undefined EQUATION or CONSTANT name or depends on another EQUATION or CONSTANT
>> that cannot be solved. For example A=B and B=A would trigger this error
>> Reported information : T_CHWS
>>
>>
>> *** Fatal Error at time : 0.000000
>> Generated by Unit : Not applicable or not available
>> Generated by Type : Not applicable or not available
>> TRNSYS Message 420 : The following variable defined in an EQUATIONs or
>> CONSTANTs card could not be solved as this variable depends on either an
>> undefined EQUATION or CONSTANT name or depends on another EQUATION or CONSTANT
>> that cannot be solved. For example A=B and B=A would trigger this error
>> Reported information : T_CHWR
>>
>> I am a little bit confused. My understanding is that Trnsys performs the
>> calculation in the equation proforma based on the input and the sequence of the
>>
>> equations as typed in the proforma, and the system performance at each time step
>> is determined component by component which follow the order as indicated in the
>> input file. Hence, should there be any improper formulation, the consequence
>> should generally be non-convergence. Is my interpretation wrong, and how can I
>> solve the problem? Please advise. Thank you!
>>
>> Best Regards
>> LEE, Chun Kwong
>> City University of Hong Knog
>>
>>
>>
>>
>> _______________________________________________
>> TRNSYS-users mailing listTRNSYS-users at cae.wisc.eduhttps://www-old.cae.wisc.edu/mailman/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:+1.608.278.1475d.bradley at tess-inc.com
>> http://www.tess-inc.comhttp://www.trnsys.com
>>
>>
>>
>> ---------- 已转发邮件 ----------
>> From: David BRADLEY <d.bradley at tess-inc.com>
>> To: Catherine <xueyushuiyun at gmail.com>
>> Date: Tue, 14 Dec 2010 16:18:17 -0600
>> Subject: Re: [TRNSYS-users] About building loads calculation in TRNSYS
>> Catherine,
>> You are quite correct that integrating solar collectors with the
>> building skin will change the loads on the building. I would guess that in
>> simulating such a situation, most people ignore the interaction and assume
>> that the presence of the collectors changes the loads only slightly in
>> comparison to the magnitude of the loads themselves.
>>
>> There are a few models of building-integrated photovoltaic panels in the
>> TESS Green Building Library (now called the TESS Electrical Library) but
>> they all assume an air gap behind the absorber surface and in front of the
>> building skin.
>> Kind regards,
>> David
>>
>>
>> On 12/9/2010 19:33, Catherine wrote:
>>
>> I want to calculate the building loads when the flat-plate
>> collector stick to the flat roof , but , how to achieve it using TRNSYS ?
>> Well , I tend to utilize the Type 56 for building model .By the way , my
>> building is an ordinary six-storey residential building .And there is no air
>> gap between the collectors and the roof-covering . As well as collectors
>> completely covered the flat roof , except the location for lacing the water
>> tank .
>> On the one hand , since the collector block the radiation for the
>> roof , which alters the energy balance of building , as well as causes
>> changes in building loads. On the other hand , for the original building ,
>> after the collector added to the roof, the thermal resistance increases ,
>> with the building heat through the roof decreasing .
>> Wish some suggestions .
>>
>>
>> _______________________________________________
>> TRNSYS-users mailing listTRNSYS-users at cae.wisc.eduhttps://www-old.cae.wisc.edu/mailman/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:+1.608.278.1475d.bradley at tess-inc.com
>> http://www.tess-inc.comhttp://www.trnsys.com
>>
>>
>> _______________________________________________
>> TRNSYS-users mailing list
>> TRNSYS-users at cae.wisc.edu
>> https://www-old.cae.wisc.edu/mailman/listinfo/trnsys-users
>>
>>
>
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> TRNSYS-users mailing list
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> https://www-old.cae.wisc.edu/mailman/listinfo/trnsys-users
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