[TRNSYS-users] ideal heating position in TRNBUILD
王洋
wanghongyang1767 at gmail.com
Thu Feb 24 06:48:00 PST 2011
Dear all,
To ideal heating in TRNBUILD: Where is this heating? Can I define its
position? If so, how to define its position? How is the ideal
heating operating or working?
thanks !
br.
wy
在 2011年2月24日 下午3:24， <trnsys-users-request at cae.wisc.edu>写道：
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> 1. Re: Problems with calling EES (Type66a) (Doms Joris)
> 2. Re: RADIATIVE PART of Heating (??)
>
>
> ---------- 已转发邮件 ----------
> From: Doms Joris <joris.doms at vito.be>
> To: David BRADLEY <d.bradley at tess-inc.com>
> Date: Thu, 24 Feb 2011 15:17:49 +0100
> Subject: Re: [TRNSYS-users] Problems with calling EES (Type66a)
> David,
>
> Thank you for the reply. The EES project was defenately openening and
> closing, but EES itself stayed open. I fixed this problem now with changing
> the pad for the EES project from
> "c:\xxx\xxx\hydraulics\EES.ees" to "\hydrolics\EES.ees".
>
> But now it seems that EES-TRNSYS coupling has a limited number of outputs,
> is this correct? When I run a long simulation with alot of timesteps, the
> simulation stops after a while, I think it is after 66000 timesteps with 20
> inputs and 40 outputs with the EES-TRNSYS coupling. Is there a solution for
> this?
>
> Using another type is no option as I need to make calcultation with EES at
> every timestep.
>
> Many thanks
>
> Joris Doms
> ------------------------------
> *Van:* David BRADLEY [d.bradley at tess-inc.com]
> *Verzonden:* dinsdag 22 februari 2011 23:40
> *Aan:* Doms Joris
> *CC:* trnsys-users at cae.wisc.edu
> *Onderwerp:* Re: [TRNSYS-users] Problems with calling EES (Type66a)
>
> Joris,
> It isn't actually the opening and closing that takes time (EES stays
> running the whole time). The slowness is the EES calculation time and the
> fact that EES is called at every single timestep and at every single
> iteration within a timestep of your TRNSYS simulation. There are a few
> different versions of Type66 that allow you to avoid calling EES whenever
> possible (basically an input that is an on/off switch for the EES
> calculations). If you know that your EES program doesn't have to be called
> (because the device that it models is inactive) then you can "turn off" the
> call to Type66 and save some time. Take a look at the EES example in the
> ..\TrnsysXX\Examples\Calling_EES\ directory; all the different options are
> shown in there.
> Kind regards,
> David
>
>
> On 2/20/2011 15:43, Doms Joris wrote:
>
> Dear TRNSYS users,
>
> When simulating an applied thermal system, I'm using EES for the hydronic
> part. I programmed the hydronic circuit in EES and coupled it with TRNSYS
> via Type 66a. This coupling works fine, but;
>
> The problem is that the simulation runs very slow. Every timestep that
> TRNSYS calls EES, the EES project is opened and closed. Is there a way to
> set some settings so EES isen't closed and reopened each time, this would
> minimize the solution time alot.
>
> Thanks on advance
>
> Joris Doms
>
> ------------------------------
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>
> _______________________________________________
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>
>
> --
> ***************************
> 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
>
> ------------------------------
> This e-mail, any attachments and the information it contains are
> confidential and meant only for the use of the addressee(s) only. Access to
> this e-mail by anyone other than the addressee(s) is unauthorized. If you
> are not the intended addressee (or responsible for delivery of the message
> to such person), you may not use, copy, distribute or deliver to anyone this
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> In such case, you should destroy this message and notify the sender
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> immediately by e-mail or telephone and delete the e-mail from any computer.
> All reasonable precautions have been taken to ensure no viruses are present
> in this e-mail and its attachments. As our company cannot accept
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> ------------------------------
>
>
>
> ---------- 已转发邮件 ----------
> From: 王洋 <wanghongyang1767 at gmail.com>
> To: duffy at tess-inc.com
> Date: Thu, 24 Feb 2011 15:24:08 +0100
> Subject: Re: [TRNSYS-users] RADIATIVE PART of Heating
> Dear Mr. Duffy,
>
> Many thanks for your reply!
>
> I’m so sorry for sending multiple identical emails to the TRNSYS
> users mailing list. Because I'm very anxious not to get those answers,
> that's some tasks my professor gave me, I must finish them these days. So I
> still have no other way to do with them after asking other guys, then I sent
> multiple identical emails to the TRNSYS users mailing list.
>
> sorry again!
>
> Br.
>
> wang
>
>
>
>
>
> 2011/2/23 Matt Duffy <duffy at tess-inc.com>
>
>>
>>
>> Dear Wang,
>>
>>
>> The following document has information about radiator/convector.
>>
>> ASHRAE, 2004 ASHRAE Handbook: HVAC Systems and Equipment, ASHRAE, Atlanta
>> Perhaps a basic heat transfer text, such as Incropera and Dewitt, may have
>> information as well.
>>
>> Best regards,
>>
>>
>> Matt Duffy
>>
>>
>>
>>
>> *----- Original Message -----*
>> *From:* "王洋" <wanghongyang1767 at gmail.com>
>> *Sent:* Wed, February 23, 2011 15:22
>> *Subject:* [TRNSYS-users] RADIATIVE PART of Heating
>>
>> Dear all,
>>
>> I want to make sure the exact value about RADIATIVE PART in the TRNBUILD
>> Heating option. e.g. What's the exact RADIATIVE PART or Convection Part
>> value of the wall heating and radiator and convector?
>>
>> Or Please introduce me some TRNSYS references and literature about
>> RADIATIVE PART or Convection Part value of the wall heating and radiator and
>> convector etc.
>>
>>
>>
>>
>> Please introduce me some best English books about the heating(radiator,
>> convector, Wandheizung and floor heating) operating or working fundamentals
>> etc., walls' thermal energy storage and materials' pyhsics property etc.,
>> the infiltration and ventilation etc. and our this research topic's
>> literatures we must read.
>>
>>
>> many thanks!
>>
>> Br.
>>
>> wang
>>
>>
>> 在 2011年2月23日 上午11:01，王洋 <wanghongyang1767 at gmail.com>写道：
>>
>>> Dear all,
>>>
>>> I want to make sure the exact value about RADIATIVE PART in the TRNBUILD
>>> Heating option. e.g. What's the exact RADIATIVE PART or Convection Part
>>> value of the wall heating and radiator and convector?
>>>
>>> Or Please introduce me some TRNSYS references and literature about
>>> RADIATIVE PART or Convection Part value of the wall heating and radiator and
>>> convector etc.
>>>
>>>
>>>
>>>
>>> Please introduce me some best English books about the heating(radiator,
>>> convector, Wandheizung and floor heating) operating or working fundamentals
>>> etc., walls' thermal energy storage and materials' pyhsics property etc.,
>>> the infiltration and ventilation etc. and our this research topic's
>>> literatures we must read.
>>>
>>>
>>> many thanks!
>>>
>>> Br.
>>>
>>> wang
>>>
>>> 2011/2/23 <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://mailman.cae.wisc.edu/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: Problems with calling EES (Type66a) (David BRADLEY)
>>>> 2. Re: Type66 EES and TRNSYS (David BRADLEY)
>>>> 3. Re: acceptable temperature range (Fred Betz)
>>>>
>>>>
>>>> ---------- 已转发邮件 ----------
>>>> From: David BRADLEY <d.bradley at tess-inc.com>
>>>> To: Doms Joris <joris.doms at vito.be>
>>>> Date: Tue, 22 Feb 2011 16:40:04 -0600
>>>> Subject: Re: [TRNSYS-users] Problems with calling EES (Type66a)
>>>> Joris,
>>>> It isn't actually the opening and closing that takes time (EES stays
>>>> running the whole time). The slowness is the EES calculation time and the
>>>> fact that EES is called at every single timestep and at every single
>>>> iteration within a timestep of your TRNSYS simulation. There are a few
>>>> different versions of Type66 that allow you to avoid calling EES whenever
>>>> possible (basically an input that is an on/off switch for the EES
>>>> calculations). If you know that your EES program doesn't have to be called
>>>> (because the device that it models is inactive) then you can "turn off" the
>>>> call to Type66 and save some time. Take a look at the EES example in the
>>>> ..\TrnsysXX\Examples\Calling_EES\ directory; all the different options are
>>>> shown in there.
>>>> Kind regards,
>>>> David
>>>>
>>>>
>>>> On 2/20/2011 15:43, Doms Joris wrote:
>>>>
>>>> Dear TRNSYS users,
>>>>
>>>> When simulating an applied thermal system, I'm using EES for the
>>>> hydronic part. I programmed the hydronic circuit in EES and coupled it with
>>>> TRNSYS via Type 66a. This coupling works fine, but;
>>>>
>>>> The problem is that the simulation runs very slow. Every timestep that
>>>> TRNSYS calls EES, the EES project is opened and closed. Is there a way to
>>>> set some settings so EES isen't closed and reopened each time, this would
>>>> minimize the solution time alot.
>>>>
>>>> Thanks on advance
>>>>
>>>> Joris Doms
>>>>
>>>> ------------------------------
>>>> This e-mail, any attachments and the information it contains are
>>>> confidential and meant only for the use of the addressee(s) only. Access to
>>>> this e-mail by anyone other than the addressee(s) is unauthorized. If you
>>>> are not the intended addressee (or responsible for delivery of the message
>>>> to such person), you may not use, copy, distribute or deliver to anyone this
>>>> message (or any part of its contents) or take any action in reliance on it.
>>>> In such case, you should destroy this message and notify the sender
>>>> immediately. If you have received this e-mail in error, please notify us
>>>> immediately by e-mail or telephone and delete the e-mail from any computer.
>>>> All reasonable precautions have been taken to ensure no viruses are
>>>> present in this e-mail and its attachments. As our company cannot accept
>>>> responsibility for any loss or damage arising from the use of this e-mail or
>>>> attachments we recommend that you subject these to your virus checking
>>>> procedures prior to use.
>>>> ------------------------------
>>>>
>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> TRNSYS-users mailing listTRNSYS-users at cae.wisc.eduhttps://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:+1.608.278.1475d.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: Simon Binnemans <simon.binnemans at khk.be>
>>>> Date: Tue, 22 Feb 2011 16:57:40 -0600
>>>> Subject: Re: [TRNSYS-users] Type66 EES and TRNSYS
>>>> Simon,
>>>> If you would be willing to send me your TRNSYS project and EES code, I
>>>> could probably debug it and find out why changing the size of szdelivertext
>>>> isn't solving it. It may be that there is a limitation on the EES side of
>>>> the connection as well; please don't quote me on that though until I get to
>>>> look at it!
>>>> Kind regards,
>>>> David
>>>>
>>>>
>>>> On 2/16/2011 04:36, Simon Binnemans wrote:
>>>>
>>>>> Dear all,
>>>>>
>>>>> I am currently using the Type66 object for exchanging data between
>>>>> TRNSYS and ees.
>>>>> At first it worked very well, but when I want to receive more than 34
>>>>> inputs from ees, TRNSYS alway generates an error: "Error converting
>>>>> clipboard data to numbers."
>>>>> After searching for this problem, I found that the problem was situated
>>>>> in the Type66 component, which only reads the first 512 characters from the
>>>>> clipboard. The suggested solution was to modify the value of szdelivertext
>>>>> to a higher number and recompile it.(
>>>>> https://mailman.cae.wisc.edu/pipermail/trnsys-users/2009/004540.html)
>>>>> I modified the value of szdelivertext to 40 000 in stead of the
>>>>> standard 4000, but the result stayed the same.
>>>>>
>>>>> Can anyone suggest a solution for this problem?
>>>>>
>>>>> Best 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 at tess-inc.com
>>>>
>>>> http://www.tess-inc.com
>>>> http://www.trnsys.com
>>>>
>>>>
>>>>
>>>>
>>>> ---------- 已转发邮件 ----------
>>>> From: Fred Betz <fbetz at aeieng.com>
>>>> To: Shahrdad JavidRad <shahrdad at live.de>, TRNSYS USERS <
>>>> trnsys-users at cae.wisc.edu>
>>>> Date: Tue, 22 Feb 2011 17:42:26 -0600
>>>> Subject: Re: [TRNSYS-users] acceptable temperature range
>>>>
>>>> You’ll probably be better off using a simple feedback controller rather
>>>> than an equation block because you can get frequent starts and stops or
>>>> non-convergence warnings.
>>>>
>>>>
>>>>
>>>> Also, that’s a pretty large temperature range to operate over. Are you
>>>> driving an absorption chiller with those temperatures?
>>>>
>>>>
>>>>
>>>> You might be better off controlling a variable speed pump to maintain
>>>> your temperature range rather than shutting the pump off when the
>>>> temperature exceeds 80C. If you shut off the pump when the temperature is
>>>> over 80C, you risk exceeding the stagnation temperature of your panels in
>>>> the real world.
>>>>
>>>>
>>>>
>>>> There is a solar thermal panel in the TESS libraries that has a built in
>>>> controller that has an output for a variable speed pump that works really
>>>> well.
>>>>
>>>>
>>>>
>>>> Good luck!
>>>>
>>>>
>>>>
>>>> Fred
>>>>
>>>>
>>>>
>>>> *Fred Betz** *PhD., LEED AP
>>>> Sustainable Systems Analyst
>>>>
>>>>
>>>>
>>>> *AEI* | AFFILIATED ENGINEERS, INC.
>>>> 5802 Research Park Blvd. | Madison, WI 53719
>>>>
>>>> P: 608.236.1175 | F: 608.238.2614
>>>> fbetz at aeieng.com | *www.aeieng.com*
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> *From:* Shahrdad JavidRad [mailto:shahrdad at live.de]
>>>> *Sent:* Tuesday, February 22, 2011 12:11 PM
>>>> *To:* TRNSYS USERS
>>>> *Subject:* [TRNSYS-users] acceptable temperature range
>>>>
>>>>
>>>>
>>>>
>>>> Hello,
>>>>
>>>> in my solar thermal system I want to define an acceptable interval for the
>>>> collector outlet temperature [65-80°C] by giving an output signal=1 for
>>>> the pump in the collector loop. For any other temperatures out of this range
>>>> the signal should be=0
>>>>
>>>> For this purpose I am using an Equation block!! (Is there any
>>>> controller, that is able to do it?)
>>>>
>>>> I have defined these variables as:
>>>>
>>>> T_min=65
>>>> T_max=80
>>>> T_out= collector outlet temperature
>>>>
>>>>
>>>> Signal=AND(GT(T_out,T_min),LT(T_out,T_max))*1+(1-AND(GT(T_out,T_min),LT(T_out,T_max)))*0
>>>>
>>>> I have plotted the signal. It works fine but I am experiencing a very
>>>> long simulation time. More than 15 minutes just for a week.
>>>>
>>>> Is there any idea?
>>>>
>>>> Thanks,
>>>> Shahrdad
>>>>
>>>>
>>>> _______________________________________________
>>>> TRNSYS-users mailing list
>>>> TRNSYS-users at cae.wisc.edu
>>>> https://mailman.cae.wisc.edu/listinfo/trnsys-users
>>>>
>>>>
>>>
>> ------------------------------
>>
>> _______________________________________________
>> TRNSYS-users mailing listTRNSYS-users at cae.wisc.eduhttps://mailman.cae.wisc.edu/listinfo/trnsys-users
>>
>>
>
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