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17236
Re: Trash Would it not be good to attach drawings when racks are discussed Sent from Samsung Mobile
shabab
Apr 22
#17236
 
17235
Re: Intake screening woes Manfred, Try fine screen with the apron test setup as originally suggested. See if two wrongs can't make a right. On Sat, 19 Apr 2014 13:39:06 -0700, Manfred
Fritz Oppliger
Apr 21
#17235
 
17234
Re: Intake screening woes I am most pleased to note that it seems that my suggestions were along the same lines as Tony Goffe and his friend Bob Weir. I have drawn some sketches
lombardm56
Apr 21
#17234
 
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17233
Re: Intake screening woes Manfred, In looking and the things that you have tried, seeming to no avail I would still suggest that a good tilted wire wedge wire screen (coanda) screen
rkweir@...
Apr 21
#17233
 
17232
Re: Intake screening woes WOW !! What a saga !!! When I had thought about the "bypass weir"... which is quite similar to your original idea, I didn't take into consideration the nature
Tony Goffe
Apr 20
#17232
 
17231
Re: Intake screening woes Hi Manfred. I've been lurking on the edge of your conversation and experiments an have some suggestions. Tours is one of many projects where the intake is
Jeff Grebe
Apr 20
#17231
 
17230
Re: Intake screening woes Manfred. Looking at your link http://ludens.cl/paradise/turbine/intake.html I have the following thoughts. The cross wires of the mesh provide to much
Laurence Lombard
Apr 20
#17230
 
17229
Re: Intake screening woes Looking forward to the results of the floater.....  I'm surprised so many have had success with their suggestions. We've been up cleaning leaves and debris 3
Kelli Mack
Apr 20
#17229
 
17228
Re: Intake screening woes Hi all, A few minutes ago I posted the results of the apron test, and the start of the floater test, at the end of my intake saga page:
Manfred Mornhinweg
Apr 19
#17228
 
17227
Re: Intake screening woes Hi Manfred, What about an upstream bypass weir..that functions, via a side-cut channel, ( of appropriate height, width, etc ,) that would allow the "50 cm
Tony Goffe
Apr 19
#17227
 
17226
Re: Intake screening woes Laurence, ... That's what I had before, and it clogged many times! ... Unfortunately it is. With low volumes in autumn, when there are lots of leaves, ALL of
Manfred Mornhinweg
Apr 19
#17226
 
17225
Re: Intake screening woes Hi, Manfred... how about an upstream weir ??At high flow, a side channel cut at the height that would divert your 50 cm overtopping around the main intake
Tony Goffe
Apr 19
#17225
 
17224
Trash I my limited experience trash seem to follow the strongest current. I think you are being too aggressive in your water intake. Too much, too fast. This causes
keith saxe
Apr 19
#17224
 
17223
Re: Intake screening woes If I could jump in here, all over S. Fla and I suppose anywhere that government can throw money at a problem...I see elaborate automatic debris-eliminating
jkftl
Apr 18
#17223
 
17222
Re: Intake screening woes Hi all, This has been the best thread on the forum in ages - thanks Manfred. Do you know how your new arrangement works during flood conditions yet, or just
ian benson
Apr 18
#17222
 
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17221
Re: Intake screening woes ... water will run across a level surface well enough if you pile up enough of it behind. I contend that there is virtue in "lining up" the water rather than
Fritz Oppliger
Apr 17
#17221
 
17220
Re: Intake screening woes I have been following this thread with half an eye. One thought that comes to mind is that one should have a side intake system - in other words the penstock
Laurence Lombard
Apr 17
#17220
 
17219
Re: Intake screening woes Thanks Bob... was thinking of I" pvc pipe "curtain" made of foot-long pieces glued into the weighted side of the floater ... (??) ... From: rkweir@...
Tony Goffe
Apr 17
#17219
 
17218
Re: Intake screening woes Bjorn, ... I have considered that, but it's hard to do. The problem is what happens during floods! At such times there will be at least 50cm deep water over my
Manfred Mornhinweg
Apr 17
#17218
 
17217
Re: Intake screening woes Dear all, I have started to make a list of things to try! Thor, ... That's something I never had thought of. Maybe it works, but I have my doubts. I would
Manfred Mornhinweg
Apr 17
#17217
 
17216
Re: Running water through a rotating drum screen There are dry sifters which might work. Essentially you'd run your penstock flow through a large rotating screen drum.put some fins on it so the water causes
FRANK HELLER
Apr 17
#17216
 
17215
Re: Intake screening woes More on the apron idea. It is more like a race that you want, to give the water the speed to push things along. So, how about covering part of the deep water
Fritz Oppliger
Apr 16
#17215
 
17214
Re: Intake screening woes Great documentation! What about an automatic brush cleaner..... install a simple undershoot paddle wheel in the stream with the axis passing over the screen.
BjornOlaf
Apr 16
#17214
 
17213
Re: Intake screening woes Tony, Fill your capped pipe about 1/2 full of water before you cap it. That way it will sink into the water and divert more. Better yet get a good wedge wire
rkweir@...
Apr 15
#17213
 
17212
Re: Intake screening woes Manfred Compared to most people my stuff is pretty crude, but I also have a LOT of debris and variation in flow. The key to getting my coanda screen to work
z
Apr 15
#17212
 
17211
Re: Intake screening woes Hey Manfred   I have followed this project from the start and have drawn much inspiration from you over the years.   I only comment here very occasionally
NOEL SQUIBB
Apr 15
#17211
 
17210
Re: Intake screening woes Dear all, here are my detailed answers to each of you! Manjunath, ... Indeed that could be a good solution. But it requires comparatively complex machinery,
Manfred Mornhinweg
Apr 15
#17210
 
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17209
Re: Intake screening woes Hi, have you tried a "floater" ? What that is ...a piece of floating, (capped-at both ends) PVC pipe that is tethered to the bank, so as to float / lay
Tony Goffe
Apr 15
#17209
 
17208
Re: Intake screening woes Dear Manfred, I think you're looking at the problem in the wrong way. By the time the leaves and logs get to yours screen you already have a problem that
susankaveny1
Apr 15
#17208
 
17207
Re: Intake screening woes... If a settling basin or an intake in a concrete column located below the surface of the water, then I'd stop fighting nature And consider installing an
FRANK HELLER
Apr 15
#17207
 
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