[TRNSYS-users] Tank Type 534

[David BRADLEY]

Andrea,

  The Type534 documentation goes into some detail about the energy 
balance that the tank performs. It can be found in:


..\TrnsysXX\Tess 
Models\Documentation\11-StorageTankLibraryMathematicalReference.pdf


kind regards,

  David



On 01/22/2019 06:44, Andrea Diaz Guasgua via TRNSYS-users wrote:
>
> Dear group,
>
>
> I am trying to understand the energy balance from the following 
> scheme. A boiler(Type 751) sends its temperature and flow to port 1 
> of a storage tank (Type 534 with two nodes and ports). I left port 2 
> disconnected with its temperature set to a constant value equal to the 
> boiler's output temperature and flow equal to zero.
>
>
> From my understanding I am injecting energy from the boiler into the 
> tank only. So I computed the tank stored energy as Store_Energy_Tank = 
> Volume_Tank*SpecificHeatCapacity*density, and then integrated over 1 
> hour period so I can get the rate. I thought this calculation should 
> be approximately to the output from the tank called "Tank Energy 
> Storage Rate [KJ/hr]", but apparently is not. Also, I checked some 
> examples from TRNSYS library and this value is negative.
>
>
> My questions are how can I compute the stored energy in a tank and 
> what do the signs means?
>
>
> I would appreciate your help,
>
>
> Regards,
>
> Andrea
>
>
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-- 
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
3 North Pinckney Street - suite 202
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

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