Nidal,
I have been using Type344 quite a lot lately and have not had
trouble with it. I can think of a number of possible causes for the
behavior that you describe but without seeing the project it is not
possible to know which one is the trouble. I think the critical
thing to do is to use a Type65 to look at the values of inputs 15
and 16 to the pool (of course you will have to look at the outputs
of whatever Type is connected to those inputs; a pump perhaps or the
outlet of the solar collector). When you know what the inlet
temperature and mass flow rate of heating water to the pool are, it
should be obvious whether such a volume at such a temperature is
able to change the pool's temperature.
1. it could be that you have so few collectors in comparison to the
size of the pool that the collector system can't affect the pool.
2. if could be that the controller that determines when the
collector system needs to run is not working the way that you expect
it to.
3. it could be that the evaporative, convective, and radiative
thermal losses from the pool are large in comparison to the energy
input from the heating system and that the pool is completely
dominated by its surroundings and not by the system.
Another thing to try is to disconnect the solar collector system and
put in an imaginary source of hot water (just set the inlet
temperature to a constant value and turn an arbitrary mass flow rate
on and off with a controller. Verify that the pool temperature is
affected by those inputs.
Kind regards,
David
On 7/15/2012 01:42, Nidal Abdalla
wrote:
Dear All
I am wondering if type 344
related with outdoor swimming
pool have been updated or not. In fact, I tried to heat
the pool using solar
system by connecting the solar collector via input number
15 and 16, but I found
that the temperature of the pool wasn’t raised regardless
of the collector
area. Do you any suggestions in this regards?
Best Regards
Nidal Abdalla
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Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
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