Temperature Profile Oddities

As a Patron, I have access to the Experimental Temperature Profile.

My understanding is that the Experimental version removes the influence of passive solar warming of the house during equipment runtimes. I don’t fully understand how this works, especially as I have a heat pump which becomes significantly less-quick to warm my house up when it’s 0°C outside, and would love a detailed explanation of what it’s doing…

Anyway! The experimental graph has a very odd Indoor Temperature Delta, with the slope actually negative ie it gets cooler inside as it gets hotter outside. This… doesn’t seem to make sense?

Further, regarding the old style Temperature Profile graph, I’m curious if there’s any way of analysing the data that makes up the plot. For some reason, when it was 18°C outside, the heat pump added +0.0°C/hour to the indoor temperature. But, the data points surrounding it show +2.0°C/hour to the indoor temperature. Where is this outlier? It would be great to be able to find it so I could work out if there was a fault with my system at that time.

Thanks in advance!

It works by simply ignoring data when the sun is out.

I would say this is definitely wrong. It looks like in your case there’s a spike from 6-9°C that is causing the trendline to shift in the wrong direction. Were you maybe running a space heater or fireplace?

The timestamped data is not currently stored anywhere. Basically, for the outdoor temperature of 18°C, there were one or more data points that averaged out to an indoor change of 0°C. If I get some time this afternoon I can run your profile and dump the raw data so you can take a look. I’ll have to think about a good way to expose that data in the GUI.

Heh, that’s so simple it’s brilliant, makes a lot more sense now. Thanks!

The only heat I have in my home is the ducted heat pump, and leaving the oven door open after cooking dinner. :man_shrugging:

It’s curious that the +2.0ºC (Indoor Delta) spike around 6ºC (Outdoor) almost precisely matches the +2.0ºC (Indoor Heat) spike…

If you’re able to do this, I’d be curious to take a look! There’s no rush or obligation though, this is only to satisfy my own curiosity.

Thanks as always!