#1 By: Jas Odell, March 10th, 2014 09:51
- Inglehurst Juniors have been sent profiles showing them the constant gas consumtption. I'll ring the school to ask what action has been taken, if any!
#2 By: Tim Stagg, March 13th, 2014 06:13
I have recently had my gas data transmitter repaired. It was down for a very long time!! I seem to be having a similar problem as my colleague at Coleman School.
I am waiting for one of our heating control engineers to drop in with a laptop and do some analysis.
I have downloaded google chrome and all seems fine
#3 By: Tim Stagg, March 13th, 2014 06:16
I have underfloor heating in a fairly new classroom extension. Reading through the manual I saw that the heating will drop back to 15 Degrees c overnight. Dont think ill ever get a green smiley for my gas!
#4 By: Graeme Stuart, March 13th, 2014 07:20
This is not very fair, unfortunately the system thinks you were using zero gas for the last 15 months or so. As such it is now comparing your consumption to that period.
I have done a quick analysis based on the data which can be downloaded as a csv file from the smartspaces site.
This is just averages but it looks pretty conclusive that the overnight consumption is avoidable.
here is a link to the data
#6 By: Jas Odell, March 18th, 2014 04:55
I believe Ashwells have been to check the gas boilers and reset the controls for optimum performance as the base load dropped last night.
#7 By: Jas Odell, March 18th, 2014 05:24
Tim has just informed me that he manually switched off all boilers in the old building at teachers' request. It was too cold this morning so he switched them all on at 0730 this morning!
#8 By: Graeme Stuart, March 18th, 2014 08:00
The heating was on all weekend as usual. Looks like it is sometimes turned off though.
Here is a link to the data this week for future reference.
#9 By: Jas Odell, March 20th, 2014 06:53
Good news Jas, The heating controls engineer found a boiler on Manual override in the old building and a gas hot water heater on for six days instead of 5. Should see a significant difference. However, bear in mind that the new building underfloor heating will be maintained at 15 deg c overnight. So no zero usage for me till the summer holidays! (I got this from Ian this morning)
#10 By: Graeme Stuart, March 20th, 2014 07:20
Great, we can see the saving here.
Another quick analysis - average daily profiles from since the data came back online.
Before and after indicate the profiles before and after the recent change.
The impact as a daily average is looking like a saving of more than 50% of the gas consumption! Its over 750kWh per day. Does this sound feasible? That's a saving of about £25 per day. Of course, we need to collect more data and see what happens on a weekend before we can be sure.
Can we invite Ian to join the forum?
#11 By: Tim Stagg, March 25th, 2014 10:30
Will I be forever red faced???????
#12 By: Graeme Stuart, March 25th, 2014 11:08
Not forever @Ingletim.
The problem is that there is a lot of missing data. As it stands the system has only one way to work out how well you are doing. It takes the most recent 12 months of data and uses that to produce an expectation. This is compared to your actual consumption this week to generate a face. The detailed methodology is documented here.
So currently the system has a lot of zeros in this 12 month baseline and consequently it predicts zero consumption. Now that data are being collected properly things will slowly change. Give it a few months and the system will start to expect a bit of consumption and you will go orange. Then slowly back to a normal working system. If we could backfill the missing data with real numbers then it would be fixed.
The current system is a prototype which we built for this pilot project. As such it is pretty inflexible. Future incarnations of this project will be smarter and have more features to avoid problems like this.
#13 By: Tim Stagg, March 26th, 2014 04:54
wonderful thanks for that, ill keep checking!!!
#14 By: Tim Stagg, April 28th, 2014 08:46
I'm in the top half of the league!!!!! Can't wait for the gas economies to show an effect.
#15 By: Graeme Stuart, April 29th, 2014 06:59
The Easter holidays have sent loads of buildings up the table. Inglehurst Junior has very good electricity and water performance over the holidays. I would expect the effect to last only a short while.
#16 By: Tim Stagg, June 3rd, 2014 10:06
Can someone tell me if my gas usage for the last week follows a pattern. We were closed for half term from Friday 23rd May at 1800 until Monday 2nd June. I'm interested because I suspect a gas fired hot water heater may not have holidays and weekends programmed in. This period contains two weekends and five weekdays where there should have been no hot water produced.
Thanks in anticipation
#17 By: Graeme Stuart, June 9th, 2014 07:07
Having a look at the data for the last few weeks tells me that very little gas has been used lately. For the week before the holidays there was a small blip of gas usage every day, presumably relating to hot water production. There was also a big pulse on Thursday 22nd.
Over half term consumption drops to a very low level but not to zero. This is consistent with a single gas powered water heater as it does occasionally drop to zero. This pattern has been consistent overnight and on weekends since the 18th of May. This out of hours level is lower than earlier in May when overnight and weekend consumption was low but never fell to zero. I guess the change is related to the heating going off.
#18 By: Tim Stagg, June 9th, 2014 10:04
ok thank you. I expected zero readings during holidays when heating is off and no demand for hot water.Thanks again
#19 By: Graeme Stuart, June 16th, 2014 12:57
It looks like electricity consumption has increased significantly lately. Specifically the overnight and weekend consumption levels. There was a problem with data early last week and since then an increase that has sent Inglehurst to the bottom of the league table.
#20 By: Graeme Stuart, October 29th, 2014 09:11
Hi @Ingletim, it looks like the heating was on over half term. Might want to check this out.
#21 By: Tim Stagg, October 29th, 2014 11:59
we had teaching staff in school all week i'm afraid!
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