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cathodeRay
cathodeRay
@cathoderay
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Joined: Feb 28, 2022
Last seen: May 31, 2026
Topics: 18 / Replies: 2918
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RE: Setback savings - fact or fiction?

The mean (over the entire range of values) difference is only 20.57 - 19.28 = 1.29°C. At lower OATs this does indeed increase, as the drop in IAT duri...

3 weeks ago
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RE: Setback savings - fact or fiction?

I do lean to the idea that the main way setbacks save energy is by lowering the daily mean IAT. With careful timing, my setbacks start at 2100 which i...

3 weeks ago
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RE: Setback savings - fact or fiction?

And finally, the mean daily IAT against mean daily OAT plots. I have broken my 'Y axis must start at zero' rule because on this occasion is may make s...

3 weeks ago
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RE: Setback savings - fact or fiction?

Meanwhile, I have done the residual plots for the analysis. These are somewhat technical, but in general terms, these plots indicate whether it is rea...

3 weeks ago
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RE: Setback savings - fact or fiction?

First plot done. Initially I missed the discrete minus sign before the 100 that changes the sign of the percentage differences, but it is inluded in t...

3 weeks ago
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RE: Setback savings - fact or fiction?

It does, see above, getting it (and making sure it made sense) was not so simple! It's just an earlier version of the same standard daily energy ...

3 weeks ago
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RE: Setback savings - fact or fiction?

I now have regression equations that make sense:     For OAT = 6°C: > 79.8-(8.29*6)+(0.237*36)[1] 38.592> 91.3-(9.55*6)+(0.2...

3 weeks ago
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RE: Setback savings - fact or fiction?

This could quickly become complex! The data points are real observed values, each one representing a 24 hour noon to noon period, with the 24 hour ene...

3 weeks ago
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RE: Setback savings - fact or fiction?

Thank you all for the positive reception and thoughtful comments and questions. To answer them as best I can: I can certainly work out the averag...

3 weeks ago
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