Controller in testcase "bestest_hydronic

[CCCGao]

In this testcase, the pump can switch on or off based on indoor temperature with the heating setpoint. But in the baseline, the pump keeps running all the time because the u_high in the model is set to 24°C, which can not reach. Is this u_high set too high?

[EttoreZ]

Hey @CCCGao, I am sorry for the late reply. 24°C is meant to be the cooling setpoint. According to the logic the pump turns on when the internal temperature goes below uLow and turns off only if cooling setpoint uHigh is reached. The baseline control logic for the pump is rather conservative. @dhblum was there any discussion on this topic?

[dhblum]

I have a note in the review document for this emulator "Common in Europe to have constant circulation pump for radiator." The control was modeled after a house in Belgium, which I personally don't have much experience with a typical set up. Does the temp reach uHigh in summer time and turn off the pump eventually?

[EttoreZ]

Below is an image with the results for the whole year:

• The pump does shut off when uHigh goes above 24°C.
• It is a bit peculiar that the heating system turns on in the Summer, which is probably due to the fact that the controller is set in heating mode using con.revert parameter for the whole year.

[dhblum]

It only turns on in summer when the temp goes below uLow. It's a pretty simple controller which I don't have an issue with right now.

[EttoreZ]

@dhblum that sounds good. I consider this issue closed then.