machine drum washing impeller

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Christophe
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machine drum washing impeller




by Christophe » 07/10/08, 17:15

I just recovered by chance in a village shop Appliances you, an old drum (stainless steel recess) of washing machine! So I find the key piece was missing to start a new project: make a small hydro :)

I'm going to start thinking about designing a mini paddle wheel based on the old drum (which is still nikel ... long live mwarf stainless !! joke to 2 balls)

Image

I hope to shoot, thanks to a completely "mobile" (transportable) unit 200 to 300W which makes, 24 hours a day, a hell of a lot of energy per year ... it remains to be seen how I could use this energy!

The idea is to bring this downstream impeller to the retention of hydraulic Aries which is now functional and reliable!
https://www.econologie.com/forums/belier-hyd ... t5268.html

Image

Edit the 4 May 2009, work has accelerated with the arrival of spring (yes work in a creek -5 ° C is not great ...) from the end of March, here's a selection of pictures , for explanations click on the links that follow the photos

Washer proces:
Image
https://www.econologie.com/forums/tambour-de ... 3-110.html

1er assembly tests:
Image
https://www.econologie.com/forums/tambour-de ... 3-130.html

1st tests of the "raft V1" (see design before):
Image
https://www.econologie.com/forums/tambour-de ... 3-140.html

2nd tests of the "V2 raft":

Image
https://www.econologie.com/forums/tambour-de ... 3-170.html

1er coupling tests (cycling gear):
Image
https://www.econologie.com/forums/tambour-de ... 3-270.html

Assembly abandoned for a "conical" assembly (machined on a digital lathe):
Image
https://www.econologie.com/forums/tambour-de ... 3-300.html

Generator is coupled to the drum:
Image
https://www.econologie.com/forums/tambour-de ... 3-300.html
Last edited by Christophe the 04 / 05 / 09, 17: 36, 2 edited once.
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Lietseu
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by Lietseu » 07/10/08, 17:19

And in addition it has a water court :D

Well my friend, I would hydrokinetic it installed long !!!!

The fleet is easier and continuous the wind 8)

You think how to do that?

Greetings from the "real" Lietseu :P
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by Christophe » 07/10/08, 17:20

Here is a copy / paste of an estimation calculation of the potentially recoverable power.

Christophe wrote:Well I could not help but make an estimate.

I suppose:
- Current 5 km / h is V = 1,39 m / s
- Radius of the paddle wheel is R = m 0.2
- And that one motive dawn is permanently
- The friction is neglected in the air

Angular velocity:
W = V / R = W = 1,39 / 0,2 6,95 = Rad / s

Motive Pressure:
p = * 1000² 1,39 / 2 966 = N / m²

Drive power:

CdA = P * p * R * W

S = surface immersed in m² and Cx = coefficient of penetration of the blade, likened to a plate which is about 1 (after of what I read on the net).

Let P = p * CdA * R * W where S = P / (C * P * R * W)

In your case, say that you would need to drive 40W (considering performance and approximation).

One will find: S = 40 / (1 966 * * * 0.2 6,95) = 0,006 m² 300cm² be submerged by blade.

For theoretical 40W (20W practice with yields) with 5km / h of water flow, you should therefore build a paddlewheel 20 cm radius with 300cm² of driving surface. For example with blades 30 cm wide, ca would 10 cm immersed.

I have the good zamis? Rah you makes me want to try it now! We're lucky to have a stream bordering garden, cf. https://www.econologie.com/forums/belier-hyd ... t5268.html
Because nothing of mine has more potential than I thought !!

If I manage to make a 100W paddle wheel (not unrealizable from these calculations) 24 / 24h it would make a lot of energy over a year (at least enough to power 1 pc!) ... remains at make this energy "usable" ... and do something reliable!


Seen here: https://www.econologie.com/forums/petite-tur ... t6063.html

I'll see what I like real data to make an estimate of my case!
Last edited by Christophe the 08 / 04 / 09, 01: 01, 2 edited once.
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by Lietseu » 07/10/08, 17:36

I do not understand why do so small ???

With Recycling alternator of a big car, you could provide more juice by putting blades 2 / 3 the width of the stream, right?
+ That little bit -

By taking such a proportion you could do what (out of curiosity)?

And immersing the craft could be better?

Hello :P
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by Christophe » 07/10/08, 17:42

Well, I want it to be easily transportable ... I can guess why :)

D'after the calculation below, a drum enough to make 200 to 300W! Which, relative to the year is pretty huge ... remains to find the generator, I recovered the 380W engine that was with the drum: HS is it I know, it is easily transformable into generating j 'know even less!

For the calculations is not so hurry! I must already measure the flow velocity of the stream!

To be continued!
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by Lietseu » 07/10/08, 18:06

Yes I understand well!

You just have to throw a colored plug in the river and measure its "passage time" with a stopwatch, measure the water height etc ... :?

Good luck !
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by Christophe » 07/10/08, 18:37

Hihi not I have not polluted the stream with a plug, I used the anemometer our small weather station.

The "average" speed is 8.6 km / h.
Last edited by Christophe the 02 / 04 / 09, 00: 14, 1 edited once.
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by Christophe » 07/10/08, 19:01

So here are the 1ers calculations.

I finally take a max current of 8km / h for who can do more can do less at the alternator but conversely more difficult ... after we refine! Moreover it is not because the level is higher than the speed is so much greater (if the level does not go up QED).

My idea is to cut the vane directly into the drum (+ single + light - expensive ...).

I suppose:

- Current 8 km / h is V = 2.2 m / s
- Drum diameter D = 48 cm
- Drum width: max cm 25 usable width (1cm each side margin): 23 cm.
- Perimeter: 150 cm
- I would like blades of 10 cm between each blading I want to keep 3 cm to keep the resistance of the structure. So I would therefore (150 / 13 11.5 =) 11 blades or blading every 32 °
- Radius of the paddle wheel for the couple 24 + = 10 34 = cm blade tip
- Application radius of the couple assuming 2 cm gap between the wheel and water: + 24 2 4 + = 30 cm
- Submerged surface by blade: 8 23 cm cm wide (184 cm²)
- It is assumed that a single motor is constantly dawn
- The friction is neglected in the air

Angular velocity:
W = V / R = W = 2,2 / 0,3 7,33 = Rad / s

Motive Pressure:
p = * 1000² 2,2 / 2 2420 = N / m²

Drive power:

CdA = P * p * D / W * 2

S = surface immersed in m and Cx = coefficient of penetration of the blade, likened to a plate which is about 1 (after of what I read on the net).

Let P = S * p * D / W * 2

W = 7,33 Rad / s
2420 p = N / m²
S = 184 0,0184 cm² or m²
D = 0.48

So recoverable theoretical driving P max = 78 Watts.

Well we attack when the future? Image

Edit: Correction, error in the formula
Last edited by Christophe the 08 / 04 / 09, 01: 03, 2 edited once.
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bobono
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Washing machine drum




by bobono » 07/10/08, 19:53

http://www.edgb2b.com/Maguysama_Technol ... ciete.html

Here is what he made you must. In fRANCE the right to use a river to produce the electricity or other production is regulated.

That means that your facility as thou had planned can only be mobile and removable .The water fishing companies and river yesterday.

You can find the blades so spoonful of details as it is not very expensive.

For the alternator is best to take a mono or tri engine and with capacitors that produces electricity or place of permanent magnets on the rotor.

Some machines are equipped with DC motor about 1000 Watts continuous.

Small generators that are on the bikes should agree.
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Re: Washing machine drum




by Christophe » 07/10/08, 20:02

bobono wrote:Here is what he made you must. In fRANCE the right to use a river to produce the electricity or other production is regulated.


Well I know that's why I WANT something "mobile" and especially cheap ... like that if I confiscate it I don't lose much!

Your link is nice but it is completely unsuited to my case (too little hydraulic power): it is a stream not a torrent my "source" ...
Last edited by Christophe the 07 / 10 / 08, 21: 52, 1 edited once.
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