[TRNSYS-users] weird Qcool

ITF - Adrien JEZEQUEL a.jezequel at itf.biz
Tue Jun 12 06:26:28 PDT 2012


Dear Wang,

As far as I understand, the cooling set temperature you define in your 
model is :

  * 24°C in summer, which seems to be correct
  * and 0°C in winter... which seems to be wrong, since you don't
    refresh your thermal zone at 0°C in winter!

That's why you obtain huge cooling loads.
BAL_ENERGY is not 0 because you heat and cool in the same time in winter.

I think you'd better put for cooling temperatures

  * 35°C in winter (no cool) - heating temperature at 21°C
  * 24°C in summer

which may be translated in an equation tool by something like :

  * summer = GE(TIME,2162)*LT(TIME,6552)
  * winter = 1 - summer
  * Tcool = 35*Winter - 9*Summer

Best regards

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	Adrien JEZEQUEL
Simulations Thermiques Dynamiques
*ITF*
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Le 12/06/2012 14:55, ?? a écrit :
> Dear all,
>
> I make a simulation. The cooling set temperature is 24*Summer schedule 
> (2162 h to 6552 h), The heating set temperature is 21*Winter schedule 
> (the rest hours). After running, however, it appears WEIRD phenomenon. 
> Please see the ATTACHED Energy_zone.BAL file. During the winter 
> period, there are Qcools and Qcool is very large up to 47000 kJ. And 
> then it results in wrong BAL_ENERG, it is not 0.
>
> Please give me some advices and solutions to that!
>
> Many thanks in advance!
>
> Br.
>
> wang
>
> 2012/6/11 <trnsys-users-request at cae.wisc.edu 
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>          (jose.gonzalez at imdea.org <mailto:jose.gonzalez at imdea.org>)
>       2. AutoReply: TRNSYS-users Digest, Vol 90, Issue 21
>          (kelelo1 at kelelo.com <mailto:kelelo1 at kelelo.com>)
>       3. type666 (Andr?s Montero)
>       4. Type 673 heating problem (Santeri Siren)
>
>
>     ---------- ????? ----------
>     From: <jose.gonzalez at imdea.org <mailto:jose.gonzalez at imdea.org>>
>     To: trnsys-users at cae.wisc.edu <mailto:trnsys-users at cae.wisc.edu>
>     Cc:
>     Date: Mon, 11 Jun 2012 16:07:28 +0200 (CEST)
>     Subject: Re: [TRNSYS-users] TRNSYS-users Digest, Vol 90, Issue 21
>     I am out of the office from Monday, June 11 to Friday, June 15 and
>     unable to respond at this time.
>
>     For any urgent matters, please contact Dr. Manuel Romero
>     (manuel.romero_at_imdea.org <http://manuel.romero_at_imdea.org>).
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>     Thank you for your understanding.
>
>     Best regards,
>
>     José Gonzalez-Aguilar
>
>
>
>     ---------- ????? ----------
>     From: kelelo1 at kelelo.com <mailto:kelelo1 at kelelo.com>
>     To: trnsys-users at cae.wisc.edu <mailto:trnsys-users at cae.wisc.edu>
>     Cc:
>     Date: Mon, 11 Jun 2012 14:10:47 GMT
>     Subject: [TRNSYS-users] AutoReply: TRNSYS-users Digest, Vol 90,
>     Issue 21
>
>     I will be out of the office from June 8 - 23 on a backpacking trip
>     with my son and his Venture Crew at Philmont Scout Ranch in New
>     Mexico. I will not have access to email or phone service while I
>     am gone, but I will reply to your message as soon as possible
>     after I return to the office on Monday, June 25th.
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>     Thank you for your patience,
>     Mark Thornbloom
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>
>
>     ---------- ????? ----------
>     From: "Andrés Montero" <andresmonteroi at gmail.com
>     <mailto:andresmonteroi at gmail.com>>
>     To: trnsys-users at cae.wisc.edu <mailto:trnsys-users at cae.wisc.edu>
>     Cc:
>     Date: Mon, 11 Jun 2012 16:57:30 +0200
>     Subject: [TRNSYS-users] type666
>     Dear Trnsys users,
>
>     In order to simulate a water-cooled chiller, first I need to
>     create the 2 external files for this component.
>     I'm trying to find some catalogues with information of a 40 to 45
>     kW water-cooled chiller but the web pages I run into it, ask me to
>     register, but I'm still waiting the username and pasword. Does
>     anyone has a catalgoue with this type of info regarding this
>     cooling capacity machine?
>
>     Best regards,
>
>     Andrés
>
>     -- 
>     Andrés Montero I.
>
>
>
>     ---------- ????? ----------
>     From: Santeri Siren <santeri.siren1 at gmail.com
>     <mailto:santeri.siren1 at gmail.com>>
>     To: "trnsys käyttäjät" <trnsys-users at cae.wisc.edu
>     <mailto:trnsys-users at cae.wisc.edu>>
>     Cc:
>     Date: Mon, 11 Jun 2012 19:56:40 +0300
>     Subject: [TRNSYS-users] Type 673 heating problem
>     Dear all,
>
>     I cant make type673 heating mode to work. Cooling mode works just
>     fine but when I change the cooling control signal to 0 and heating
>     control signal to 1 it doesnt work anymore. When the heating mode
>     is used nothing happens. Does anyone know why?
>
>     Best regards,
>     Santeri Siren
>
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