So, I have this curve fitting against which I can compare my gas consumption based on the average outside temperature for the month. But his is done for a month, and I wanted to see if I could go to a lower level, so I found in the KNMI website a service from which you can download all kinds of meteo data for a time period.
I downloaded the average month temperatures for "De Bilt" as that is where I have been basing my calculations all these years, although not the closest station, and plotted it against the daily gas consumption. I couldn't go away without putting it here, so here goes, for the month of November:
2 comments:
If you plot 'graaddagen' against gas usage, you have even better information,
Henk
Hello,
I didn't know about these "graddagen"! interesting concept, and indeed it appears to be used by many to do what I have been doing.
The formula would be something like:
GD = ∑max[0, (18-T)]
In fact what it does is just to invert the temperature curve in the graphic I posted (saturating the temperature at 18C) and making it very easy to relate. Especially if you tweak the "18" such that the graaddag value almost equals the gas consumption! I might put a graph of that later tonight!
Thanks for pointing it out!
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