Annual consumption of pellet boiler OKOFEN

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by Did67 » 24/04/09, 10:25

It was purely to laugh and add a layer, a question of blonde.

After all, you self-qualified as a blonde ...

If I understand correctly, are we waiting for your photos?
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by Did67 » 24/04/09, 10:38

dirk pitt wrote:same but on the axis which is in line with the engine. it spins faster.
my reasoning is that we have an interest in having as many impulses as possible: indeed if the meter lacks an impulse at each "alarm clock" (to be sure that this is not the case), I tell myself that as a percentage, it is interesting that this missed impulse represents less.

in this same idea I put two magnets per turn
I made it simple: a cover of sheet metal jam pierced in the center.
the two magnets glued on by their own magnetization and rolls my hen.
I now have fairly precise values ​​by measuring the volume consumed in the cylindrical hopper of the boiler. in the evening, I open the hopper, I smooth the granules well horizontally and I measure the volume consumed during the day.


1) I asked myself this question. Mine, I actually checked. It's easy on the silo extraction screw. Charging is scheduled for 19 p.m., so I went down just before to see. Start in the first round, which is counted!

2) With regard to the question of the number of revolutions, I asked myself the question of the limit of the internal memory in the contraption. My objective being to follow my stock of 8 tons, it is not necessary that the capacity of the memory of the contraption is exceeded. In total kilometers, I have 5 digits on the display, but is the memory behind sufficient? No indication of any limit on the notice.

If I remember correctly, on the tautin wheel, 1 turn = 30 g. It came down to 1 km = 10 kg (I think). My 8 tonnes would be less than 1 km. So there we have room. Might as well go on the wheel that spins the most.

3) The question I keep asking myself: what if the magnet stops right in front of the sensor (the screw works by impulse)?
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by dirk pitt » 24/04/09, 11:04

Did67 wrote: Start in the first round, which is counted!


sorry to be fussy but how are you sure this impulse is counted?

let me explain:
on my meter I have the impression that it is not but it is not so obvious.
the resolution of my counter is only 0.1km
I counted that in continuous running without "sleep", it took 50 pulses for the digit to increase (normal: 1 turn of the bike wheel = 2m)
on the other hand if the counting stops in progress, despite that the first pulse after sleep wakes him up well, the next digit turns to the 51st pulse
it is as if the first impulse after sleep woke him up but without being counted. it may be a bug in my counter.

hence my idea of ​​having as many pulses as possible.
so I chose the wheel that turns the fastest (bottom at the end of the engine) with two more TOP per revolution.
I admit that I did not think about the maxi memory.
I already see if it is linear and reliable compared to small volumes measured in the hopper.
if it looks ok, it will have to be made a little cleaner.

by the way, I think the ratio does not matter and that we should not bother too much with that. even if the ratio falls not round, it's not a problem, excel will do the rule of three.
For me, the goal is to draw the graph of the consumption according to the DJU (weekly or monthly) which makes it possible to check the overconsumption due to something other than the "natural" losses of the house: doors that remain open, instructions forced "comfort" that we forget, etc. etc.
and in addition to seeing what an improvement "reports" (isolation, nighttime drop, etc.)

theoretically, if all goes well we must get a straight line.
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by Pear Belle Helene » 24/04/09, 11:14

Did67 wrote:It was purely to laugh and add a layer, a question of blonde.

After all, you self-qualified as a blonde ...

If I understand correctly, are we waiting for your photos?


And it's good with humor that I take it and that I self-qualify : Mrgreen:

I guess we're talking about the pictures of my boiler : Mrgreen:
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by Did67 » 24/04/09, 11:37

dirk pitt wrote:
sorry to be fussy but how are you sure this impulse is counted?



1-0, ball in the center.

I wrote too fast, too loud. I am not sure. It seems to me !

Mine gives the ten meters (daily counter). So 3 turns = 10 m (with my setting). It seemed to me that the daily counter was incremented after the third pass.

More a single obse [/ [u] u] rvation (since then the boiler has stopped). So, you instilled doubt, with your much more precise observations ...

Another question also remains: does memory retain laps not yet counted on the counter? Imagine that 2 laps after the incrementation of the daily counter, it stops. Do these two towers remain in memory for the next day's restart? And one lap further, will the counter increase? Or is it off for 3 laps?

In other words: does memory accumulate the tours recorded (pulses) and then it converts to km or keeps it in memory the distance already recorded and add the "count of the day"? I suppose and hope that this is the first option, otherwise, we will have an average systematic error higher even than your "warm-up lap" ...

I'm going to have to play a little more with the thing before I can say anything!

All that said then, I resume my "for sure", I will better check before talking. That is for sure!

You're right to go on the wheel that turns the most, it's clear. This is what I will also do with my second counter. Especially if you give me the equivalence ... I would not have the courage to smooth the pellet tank every night, weigh, fill ...

Like you, I would like to have a fairly precise measurement over a short period (a few days) to be clear on the issue of night lowering with my heated floors. Everyone says it is not effective. For the moment, I persist in not believing them. But if it is, the gap is peanuts. Then I would stop lowering and avoid all the questions of oscillations. So I would like to check that ...

Apart from that, it's just the management of my stock that interests me. And there, you have to manage the 8 tonnes, so I have to stay within the limit of the widget's memory.
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by Did67 » 24/04/09, 14:04

Pear Belle Helene wrote:
I guess we're talking about the photos of my boiler: mrgreen:


No, no, too fastoche, click clack thank you Kodak. I'm talking about the photos of YOUR counter that YOU have installed!

"Office" version like tautin or "grandma does knitting" version (I think we can do something with a knitting needle) ...
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by Did67 » 25/04/09, 10:38

Regarding the start / count on my counter, a few things:

1) I tested yesterday; not easy, each time you have to wait more than an hour for it to go to sleep! It takes forever!

2) 3 times in a row, the counter woke up and incremented a distance of 10 m after 3 passes of the magnet (my turn of the wheel is set to 3 m)

3) The fourth time is after 4 passages ... Here ????

4) I confirm that the memory "retains" 2 laps made before going into standby even if the trip counter has not moved. And after the day before, the counter restarts on the first pass, which is added to the 2 laps kept in memory ... And therefore an increment of 10 m after a single pass (2 kept in memory + 1 pass on restart) ...

So I had a doubt, before taking into account my setting of 3 m (wheel turn). So everything suggests that the distance displayed is the rounding of the number of revolutions x wheel revolution. And this would be the number of laps that is memorized (not the distance). I say "everything leads to believe ..."

This would explain that 3 turns = 9 m rounded to 10 (displayed), then "following turns = 18 m rounded to 20 displayed then 3 next turns 27 rounded to 30 then 36 rounded to 40. Then 45 and nothing moves, we stay at 40, then one more turn and it's 48 rounded to 50 ...

I am then nearly formal: start on the 1st pass, which is counted. I will do a check with a simpler setting! (1 wheel revolution = 2 m)
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by Did67 » 28/04/09, 08:36

Checks made (new meter, same model):

- it starts well on the first pass of the magnet

- the first round is well counted (verified on half a dozen tries; once, a doubt - I think it was me who was distracted in the count)

- laps already made and not yet indicated on the counter are kept in memory for the daily totalizer ...

Everything supports me in the idea that it is the number of passages of the magnet which is memorized; the display is only the conversion of the number of revolutions x wheel revolution = distance.

As a result, the setting of the perimeter of the wheel has no effect on the accuracy of the count: the mileage displayed will be higher or lower, but that does not change anything ...

@dirkpitt

I think that the sensor / magnet works by induced current: the impulse is undoubtedly more "marked" when the speed of passage of the magnet is important. Hence the interest in using the highest possible diameter for the arm or the "wheel" which carries the magnet ... A simple opinion ...

FYI: tests made with an ATV wheel, magnet placed about 2/3 of the radius (counted from the hub).
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by dirk pitt » 28/04/09, 09:09

great job did67,
it's not that easy to find the right meter.
me, I was lucky, I tried that of an old bike at home, and it works but two others more recent did not wake up by the impulse.

so it would be good if you put the brand and the exact reference of the counter for those who would like to do the same.

like this, next winter we will have several steps to povoir compare.
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by Did67 » 28/04/09, 09:21

I had put it higher, but it was drowned in the text. You can see it in the photos.

I put back : Trelock FC 510, on sale at Decathlon (currently on sale at 10 €). It was indeed, of the various models on sale, the only one that indicated on the packaging "automatic on / off" or something like that.
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