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Re: [EnergyPlus_Support] Swimming pool water temperature not reaching desired temperature



Good news!

On Mon, Nov 9, 2015 at 6:20 PM, jonathan duverge jduverge1979@xxxxxxxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:
 

Hi Jim

I manage to get it to work. The issue was that I use the 5Zoneswimming example as a guide. So instead of concentrating on the example, I start from the beginning -building the whole plant loop, supply and demand branches. the main mistake was in the plant loop itself . Some of the field (Plant flowrate, plant loop volume etc) requires your own input however when you look in the example, they use 0 or autosize for those field)
The pool water is now at the desired temperature. However, when i looked at the variables especially the make-up water volume, It is huge (about 54055393 m3 per month which is impossible, as the pool itself is only a 25m lap pool with 1.4 average depth). Not sure how E+ is coming up with that figure.

Thanks for your help. I will keep working on it and hopefully i can fix that. Let me know if you have any suggestion.



On Monday, 9 November 2015, 23:42, "Jim Dirkes jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:


 
Jonathan,
Did you notice that your pool surface name is invalid?  It must the the name of the floor surface for the pool area (per the I/O Reference)
Inline image 1

On Sun, Nov 8, 2015 at 7:19 PM, Jim Dirkes jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:
 
Jonathan,
I have not reviewed your IDF in detail, but here are some ideas:
  • I'm guessing that because you've set the Pool Heating System Maximum Water Flow Rate = 0, that no pool heating occurs.
  • Inline image 2
  • I have not used the (relatively) new indoor Pool object in E+, but E+ needs to know at least a couple of things in order to calculate pool heating energy
    • a peak evaporation rate and 
    • a schedule for diversity of the evaporation (e.g., active vs. inactive periods in the pool)
  • Since evaporation represents a heat loss equivalent to ~950 BTU/hr, the load on the pool heater is the product of the peak rate and the diversity fraction.
  • If you have a dehumidification system, the evaporation is also a latent load for your dehumidification system.  This can be represented with an OtherEquipment object, as shown below (but may be included in some fashion by the Indoor Pool object).
  • Inline image 1
  • If you want to get more detailed, and assuming the pool is built into the ground, you might also consider defining the pool as a "basement" zone with walls of the same material as the pool sub-surface walls and a heating system which maintains that zone at the pool's water temperature
I hope this helps.

On Sun, Nov 8, 2015 at 6:18 AM, jduverge1979@xxxxxxxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:
 
Can anybody have a lot at what I'm doing wrong.
I am simulating an indoor swimming pool. I manage to get the project to simulate. However i cannot get the pool water temperature to 29 degree. And also there is no pool water heating rate. I thought maybe i have not properly identify the swimming pool (vertex). I compared mine to the swimming pool example provide 5Zoneswimming pool. In the example , the vertex use to reflect the surface of the swimming pool does not seems right as well.

I have attached the result spreadsheet and the idf file.
Can somebody please help

Regards
Jonathan



--
James V Dirkes II, PE, BEMP, LEED AP
CEO/President
The Building Performance Team Inc.
1631 Acacia Dr, GR, Mi 49504

Direct: 616.450.8653
jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx

Website l  LinkedIn
We will forever be crippled if we let emotion or unexamined reactions govern our thoughts and actions. 



--
James V Dirkes II, PE, BEMP, LEED AP
CEO/President
The Building Performance Team Inc.
1631 Acacia Dr, GR, Mi 49504

Direct: 616.450.8653
jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx

Website l  LinkedIn
We will forever be crippled if we let emotion or unexamined reactions govern our thoughts and actions. 





--

James V Dirkes II, PE, BEMP, LEED AP
CEO/President
The Building Performance Team Inc.
1631 Acacia Dr, GR, Mi 49504

Direct: 616.450.8653
jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx

Website l  LinkedIn

We will forever be crippled if we let emotion or unexamined reactions govern our thoughts and actions. 



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Posted by: Jim Dirkes <jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx>


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