On Tue, Apr 11, 2023 at 12:32 AM Hadi Tannous <hadieliastannous@gmail.com> wrote:
Hi Jeff,Thanks for your quick responses. My deadline is approaching and I have been stuck on this for days.I plotted the flow rate and temperature in and out of the tank with the heating elements off, as attached. The flow rate in and out of the tank is balanced (all at 60kg/hr). It also seems the PVT is having an effect on the temperature in the tank.I tried another period in April when the PVT achieved a temperature higher than 40 C, but as you see, the tank is providing the temperature to the load at a lower temperature when the heating elements are still off.When heating elements are on, the tank provides a temperature of 40 C to the load, as seen below.It is also weird that at some moments, the temperature from the tank to the PVT (blue) is higher than the temperature from the PVT to the tank (red).Any thoughts?Thanks,HadiOn Mon, Apr 10, 2023 at 10:20 PM <thornton@tess-inc.com> wrote:On 2023-04-10 16:14, Hadi Tannous wrote:
> Thanks for the response. I am not sure how to monitor if the solar
> system is supplying any energy to the tank. I tried to increase the
> size of the PVT and monitor the average temperature of the tank
> (heating elements off). It does not seem to have much effect as you
> can see.
One plot per year doesn't tell you much - try plotting weekly. Then
simply plot the flow rate of the solar system into the storage tank to
see if it's doing anything.
Jeff
----
Jeff Thornton
President
Thermal Energy System Specialists (TESS)
3 N. Pinckney Street - Suite 202
Madison WI 53703
(608) 274-2577
www.tess-inc.com
