I don't know whether others will find this interesting, but I certainly did.
Look at this graph:
graph.jpg
See how from mid morning until mid afternoon the temperature rises, even though the heating is off (as we're way above set-point). This is solar gain, in a south facing room.
You can also clearly see optimisation at work here. The schedule has 19 degrees from 5:30, but as you can see the set-point was sent at around 4:30. Similarly, the drop to 13 degrees (daytime holding temp) is scheduled for 8am, but the setpoint was sent about 20 minutes before that.
The afternoon jump to 20 degrees is scheduled for 16:00, and that happened on dot. optimisation didn't kick in because solar gain had already raised the room temp to above set point.
The other odd thing eagle eyed readers will notice is that when the heating goes off at 22:30, the temp continues to rise for a while. Obviously THAT isn't solar gain! It's because this is one (relatively unused) end of an open-plan area, and during the evening the other end is heated to a slightly higher temperature. This is that temperature spreading across the open area.
I find stuff like this fascinating! Hope I haven't bored you.
Look at this graph:
graph.jpg
See how from mid morning until mid afternoon the temperature rises, even though the heating is off (as we're way above set-point). This is solar gain, in a south facing room.
You can also clearly see optimisation at work here. The schedule has 19 degrees from 5:30, but as you can see the set-point was sent at around 4:30. Similarly, the drop to 13 degrees (daytime holding temp) is scheduled for 8am, but the setpoint was sent about 20 minutes before that.
The afternoon jump to 20 degrees is scheduled for 16:00, and that happened on dot. optimisation didn't kick in because solar gain had already raised the room temp to above set point.
The other odd thing eagle eyed readers will notice is that when the heating goes off at 22:30, the temp continues to rise for a while. Obviously THAT isn't solar gain! It's because this is one (relatively unused) end of an open-plan area, and during the evening the other end is heated to a slightly higher temperature. This is that temperature spreading across the open area.
I find stuff like this fascinating! Hope I haven't bored you.
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