[TRNSYS-users] Air treatment unit / ground temperature model

[Francis KERBER]

Dear David and Jean,

Many thanks for your answer. I just need the ground temperature to modelise
my basement. In my bui. I use an input Tsoil for "boundary userdefined"
that's all. I will use your values if I don't find any.

Otherwise to answer Jean question, I want to modelise to analyse energy
performance, and to compare to reality my heat and cool needs.

Many thanks.
Hope u will be able to answer to my second question about my air treatment
unit and the final regulation system.

Francis

2012/7/3 David BRADLEY <d.bradley at tess-inc.com>

> Francis,
>   There is no difference between Type77 and Type501. The component started
> out in the TESS Libraries as Type501 but was donated to the standard
> library and given a new number. It is still in the TESS Libraries for
> backward compatibility. The thing to remember about that model is that it
> is an undisturbed ground temperature model meaning that no matter how much
> energy you remove from the ground or add to the ground, the ground
> temperature will only ever be a function of the time of year. If you are
> using this in a geothermal application where you are rejecting energy to
> the ground and removing energy from the ground, the ground temperature will
> be impacted and you should look at using Type557. If you are drawing air
> through tubes in the ground then you should look at using Type460 (Pierre
> Holmuller's earth duct model as implemented by Transsolar)
>
>   If you aren't able to find data for Type501 then the following will get
> you started: For the mean soil temperature, use the average annual air
> temperature for your location. For the amplitude, plot out the monthly
> average temperature for your location and calculate the biggest difference
> between the average annual temperature and the monthly average
> temperatures. For the time shift, use 30.
>
> Best,
>  David
>
>
>
>
> On 7/2/2012 09:21, Francis KERBER wrote:
>
>  Dear all,
>
> I'm quite new on trnsys and I have few questions about my modelisation.
>
> Firstable, I'd like to simulate the ground temperature instead of using a
> constant, which is less precise. I heard about type 501 and type 77. Is
> there any difference between those types? Which one is the best? Moreover,
> where to find the informations the type needs as inputs, like mean soil
> temperature, amplitude of Paris...?
>
> My project includes a Air treatment unit with a wheel heat exchanger, two
> fans, and two batteries (warm water and cold water batteries). I get a
> final regulation system, wich is a ventilating and cooling or heating
> system (by warm water and cold water batteries as well), depending on the
> set temperature. I do understand the system but I don't really know how to
> modelise it. Is ther any existing type I can use? Should I detail each
> system like my fans, my batteries...which seems to be complicated.
> Moreover if I have this final regulation system in each room, must I
> create as much types as number of rooms?
>
> If u have any idea that would be helpful!!!!!
>
> Thanks a lot for ur answers
>
> Francis.
>
>
> _______________________________________________
> 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
>
>
>
>
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