water heater source - solar collector E+

I am analyzing the output data 'water heater source temperature inlet' in a simulation with a solar collector, when extracting the values I noticed that at a certain time the temperature drops considerably and then increases again. What can cause this sudden drop in temperature?

Soares

asked 2020-09-03 13:16:33 -0500, updated 2020-09-03 13:19:00 -0500

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If your source side of the water heater is connected to a solar collector, are the temperature drops occuring at night? Perhaps the solar collector pump is operating at night for some reason.

Aaron Boranian (2020-09-03 16:04:21 -0500) edit

Hello Aaron! Thanks for the feedback. Yes, it is connected to a solar collector, the temperature drop starts at 8 am, goes to about 20°C and at 9 am it starts to rise. I'm reading the program's input output, there it is about thermostat and temperature control of us, I'm reviewing the simulation, but so far I haven't figured out what the problem is. If you find out something, please let me know.

Soares (2020-09-03 16:16:50 -0500) edit

It's hard to say without looking at your model. Is this in a time of year where the sun hasn't risen by 9 AM? Or is this every day of an annual simulation? You should have enough karma points to add images to your question post, it would be great to add a line chart showing the outputs you're referencing. Also, this post will likely be useful.

Aaron Boranian (2020-09-03 17:48:23 -0500) edit