[TRNSYS-users] TRNSYS-users Digest, Vol 90, Issue 24

3 posts / 0 new
Last post

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).

Thank you for your understanding.

Best regards,

Jos? Gonzalez-Aguilar

jose.gonzalez at imdea.org's picture
Joined: 2016-04-05
Reputation: 0

Dear Adrien Jezequel,

Many thanks!

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

For Tcool = 35*Winter - 9*Summer, do you mean if in winter, Tcool = 35 ?C,
so Cooling doesn't work ; if in summer, Tcool = -9?C or 24 ?C?

Meanwhile, another weird phenomena appear: After running based on your
solution in winter, indoor temperature becomes 35 ?C also not 21 ?C,
although I set heating temperature as 21 ?C; in summer, however, indoor
temperature becomes 21 ?C. Please see the Attached On-Line Plotter image.
Furthermore, when I create another Tcool equation as 35*winter+24*summer,
the result is also like the Attached On-Line Plotter image.

Please give me some solutions or advices!
I think the point how to set that Cooling doesn't work in winter? The
possible reason of that problem is that I also set a Mechanical Ventilation
in winter (Tset=19 ?C) and summer (Tset=17 ?C). I guess Maybe the
Mechanical Ventilation will influence on Cooling and heating?

Many thanks in advance!

Br.

wang

2012/6/12

=?GB2312?B?zfXR8w==?='s picture
Joined: 2016-04-05
Reputation: 0

Or sorry, I made a mistake in my previous mail :

* Tcool = 35 - 9 * Summer (instead of 35*winter - 9*summer)

Regarding your heating system it may be something like :

* Theat = 21*Winter

Regarding your attached picture, your heating system seems to work all
the time.
In summer, either you cool at 21?C, either there is no internal gains
defined, and you heat at 21?C.
Check your differents inputs.
You can procede step by step (internal gain = 0, ventilation = 0,
infiltration rate = 0...) to see the influence of each parameters in
your model to catch your issue.

Best regards
------------------------------------------------------------------------
www.itf.biz
www.itf.biz

Adrien JEZEQUEL
Simulations Thermiques Dynamiques
*ITF*
62, Rue du Bolliet
73230 St Alban Leysse
FRANCE
Phone :
Fax :
Mail:
+33(0) 479 750 029
+33(0) 479 852 122
a.jezequel at itf.biz ou aj at itf.biz

/Afin de contribuer au respect de l'environnement, merci de n'imprimer
cet e-mail que si n?cessaire
Please, consider our environmental responsability before printing this email
/

Le 12/06/2012 17:47, ?? a ?crit :

ITF - Adrien JEZEQUEL's picture
Joined: 2016-04-05
Reputation: 0