[TRNSYS-users] Spam: Re: Problem with Type16

[Adrien JEZEQUEL - ITF]

Dear Matt,

I check all of Type16 inputs and parameters, and everything seems good...

When I compare Type16 results with Grenoble Meteonorm data (from TRNSYS 
Library).
Results are checked in following table:


	*ITH
[kWh/year]
* 	*IT_North
[kWh/year]* 	*IT_South
[kWh/year]* 	*IT_East
[kWh/year]* 	*IT_West
[kWh/year]*
Meteonorm
	1241.6
	383.3
	940.8
	740.8
	749.1
Type16
	1239.4
	*482.0*
	971.2
	*1030.5*
	693.3
/*Differences
*/ 	/*-0.2%
*/ 	/*+25.8%
*/ 	/*+3.2%
*/ 	/*+39.1%
*/ 	/*-7.5%
*/


Total Radiation on horizontal and south surfaces seem to be identical , 
whatever the calculation mode chosen.
Difference is less than 10% for West orientation, which maybe acceptable.
For East and North orientations, total radiation are very different 
(more than 25% btween the both calculation modes).
Total Radiation on East surface is much more higher than IT West, 
although values seem to be really close to each other with Meteonorm data.

Being unable to solve that issue, I decide to use Meteonorm data for 
radiation values calculation in my simulation, which seems to be right.
If someone have an idea...

Best regards
------------------------------------------------------------------------
www.itf.biz <http://www.itf.biz>
www.itf.biz <http://www.itf.biz>

	Adrien JEZEQUEL
Simulations Thermiques Dynamiques
*ITF*
	87, Avenue de Chambéry
73230 St Alban Leysse
FRANCE
Phone :
Fax :
Mail:
	+33(0) 479 750 029
+33(0) 479 852 122
a.jezequel at itf.biz

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Matt Duffy a écrit :
> Dear Adrien,
>
> Please make sure that your "solar high noon" in your data matches the 
> "solar high noon" coming out of Type16. This may be an issue with your 
> start time - it could be off by an hour. Also, make sure you are NOT 
> interpolating in Type9 for your radiation data.
>
> Best regards,
>
> Matt Duffy
>
>
> *----- Original Message -----*
> *From:* a.jezequel at itf.biz
> *Sent:* Wed, September 30, 2009, 5:43 AM
> *Subject:* [TRNSYS-users] Problem with Type16
>
> Dear TRNSYS users,
>
> I try to use Type16 to obtain solar radiation on each surface (North, 
> South, East, and West) of my building with IBH and IDH given and read 
> by a simple data reader.
> The considered building is placed in Grenoble (lat : 45.12° - long 5.42°).
> I put those informations in Type16 parameters :
> Parameter5 (Latitude) = *45.12 degrees*
> Parameter7 (Shift in Solar Time) = -15-(-5.42) = *-9.58 degrees
> *Parameter9 (Solar Time) = *1*
>
> But beam radiation exceeds extraterrestrial radiation for 25 
> time-steps during the simulation. This problem occurs only for East 
> orientation (West orientation if parameter7 is positive) whatever the 
> tilted surface mode (Parameter3).
>
> I have seen in TRNSYS users archive that other people have encountered 
> problem in Type16 use, but I haven't found how to solve that issue.
>
> Any help will be appreciated
>
> Best regards
>
> -- 
> ------------------------------------------------------------------------
>
> www.itf.biz <http://www.itf.biz>
>
> 	Adrien JEZEQUEL
> Simulations Thermiques Dynamiques
> *ITF*
>   	87, Avenue de Chambéry
> 73230 St Alban Leysse
> FRANCE
> Phone :
> Fax :
> Mail:
> 	+33(0) 479 750 029
> +33(0) 479 852 122
> a.jezequel at itf.biz
>
> /Afin de contribuer au respect de l'environnement, merci de n'imprimer 
> cet e-mail que si nécessaire
> Please, consider our environmental responsability before printing this 
> email
> /
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