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 Post subject: Re: Sketchup components
PostPosted: Oct 14th, '08, 23:51 
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Cyara wrote:
I am going real blonde here Frank.... :D
Please explain how the water flows through this oxygenator. Just looks like it will come from up top and bounce over the tiles and out......
I know I am missing the point. :drunken: ... so beg you patience :D
I did a lot of reading up yesterday on flow forms.... and it seems to be about gaining a gentle figure 8 action in the water with swirls and eddies much like the sides of a river as it meanders over rocks. I am going to carve into rocks and have them in series like little waterfalls downhill to the fish pond. The flout will lead into this.... so will be a bit of a sculpture resting above the pond. Well ....my thoughts so far.... :flower:

you are not missing the point, Chelle, you have got it exactly right
the water will bounce over the tiles, and will alternatively gain speed and be stopped off, gain speed, stopped off, gain...
just like in a series of normal cascades or rapids
the difference is that in the high gain passive aerator, not one, but both sides of the water are exposed to air by the open channels of the double sided polycarbonate plates
and that each step causes a venturi effect (this time a real one) by the speed changes that occur, which will effectively suck air into the water stream through the channels of the double sided polycarbonate plates

http://en.wikipedia.org/wiki/Venturi_effect:
Quote:
The Venturi effect is the fluid pressure that results when an incompressible fluid flows through a constricted section of pipe. The Venturi effect may be derived from a combination of Bernoulli's principle and the equation of continuity. The fluid velocity must increase through the constriction to satisfy the equation of continuity, while its pressure must decrease due to conservation of energy: the gain in kinetic energy is supplied by a drop in pressure or a pressure gradient force.


I can not really explain the constriction (limited by language) as apparently there is none, but there must be one which is proven by the speed changes
Wikipedia gives a comparable example: Large cities where wind is forced between buildings
you might reply that between two buildings there is a restriction
but even with one building and strong winds you will see leaves and pieces of paper being sucked off the ground high into the air
that is because of the venturi effect caused by speed changes of the medium

on this point Wikipedia contradicts itself by adding the word "incompressible" in the basic description: the venturi effect exists in gases as well as in liquids
the speed change liberates energy, this energy creates a vacuum, this vacuum can be used to suck in another medium

hope this explanation was not too messy

flow forms do the same: exposing lots of water surface to air, but only on one side and without venturi effect (where mixing with air is concerned)
the venturi effect is limited to water/water

in both systems the energy is tapped from the kinetic energy of water falling down caused by gravity which originates from your pump that has pumped water to a height, thus transforming electrical energy into potential energy

a side effect is changing the laminar flow into a turbulent one so more water molecules are exposed to air

my design will be more efficient versus the footprint, and easier to build,
but I'm sure your sculptures will be far more pleasant to look at :flower:

if you consider using them, maybe design a pretty one and make a mould so you can cast them in series as you will need more of them
might even sell some to your customers later on

frank

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 Post subject: Re: Sketchup components
PostPosted: Nov 6th, '08, 18:19 
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Had a play with Google Sketch-up. Its not a bad program. I had to resubmit plans to council 3 years after they said I didn't need them and could not find the auto cad files. So quickly did them up in sketch-up. Once my system is finished I'll have to have a go at drawing it. might look a little messy. :geek:

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 Post subject: Re: Sketchup components
PostPosted: Nov 6th, '08, 18:49 
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 Post subject: Re: Sketchup components
PostPosted: Nov 6th, '08, 18:59 
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Outbackozzie wrote:
Plans for...?


A new bathroom for the shop. 3 years ago when I asked if I needed a development application to build inside a shed they gave me a 3 month run around before saying "I don't think you need to submit a Dev app". And I replied"So the first question I asked you guys 3 months ago, you ment to say NO.

Anyway 3 years after that and they have decided we need a toilet and plans. Funny thing is I built the rest of the place without one. They seem like nice guys anyway and its not too much of a pain. And they wanted me to add the location of a 20ft container that I have in the yard. Apparently this is going to be the norm if you want to put a shipping container in your yard it will have to go through local council. Something about the neighbors have been complaining about people putting these things in there yards.

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 Post subject: Re: Sketchup components
PostPosted: Nov 6th, '08, 19:28 
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They got banned in Kambalda a few years ago - too many kiwi's living in them :roll:

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 Post subject: Re: Sketchup components
PostPosted: Nov 6th, '08, 20:13 
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I think thats why I like 160 acres to live on WHAT NEIGHBOURS???? About the Sketchup components I'm trryyyinnngggg to put my components into sketchup, It's tricker than my lasercutting cad program, guess I'm just not used to sketchup yet It does look like a good program though......I will continue to do battle with the mouse........

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 Post subject: Re: Sketchup components
PostPosted: Nov 7th, '08, 00:03 
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Dufflight wrote:
And they wanted me to add the location of a 20ft container that I have in the yard.


maybe these can help, Dufflight:
not perfect, but a start
Attachment:
container 10'.skp [44.04 KiB]
Downloaded 380 times

Attachment:
container 40'.skp [37.74 KiB]
Downloaded 345 times


frank

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 Post subject: Re: Sketchup components
PostPosted: Nov 7th, '08, 11:08 
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Thanks Frank.

Could not go past buying the container. Its a working 20f freezer(-18) container with floor to ceiling stainless steel inside. For a $1000 inc gst :mrgreen:

Not as easy to go from CAD to sketch up but if you start with the 2D drawings and then once you get the feel move on to the 3d stuff.

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 Post subject: Re: Sketchup components
PostPosted: Nov 7th, '08, 14:53 
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moving from CAD to Sketchup is like moving from ski to snowboard:
you have to (temporarily) forget most of what you've learned

it is very frustrating when something that you have adapted to so that it has become an automatism
refuses to work in the new game

but after a few hours of adaptation, when you get the knack of it and it starts to get fun, you can re-use most of your old skills

then experience with CAD regains it's value

frank

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 Post subject: Re: Sketchup components
PostPosted: Nov 18th, '08, 06:39 
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Version 7.0 of Google Sketchup is now available.

Youtube video of new stuff

Download here

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 Post subject: Re: Sketchup components
PostPosted: Mar 30th, '10, 11:37 
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I discovered a function in Sketchup that i dont think is in the documentation

holding down the mousewheel button (ie click it down not roll it) gets you the "look around from different angles tool" . and you can do it at anytime without changing the tool you have selected

-craig

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 Post subject: Re: Sketchup components
PostPosted: Aug 5th, '10, 18:13 
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Hi

Does anyone have containers drawn like spit in 2 lengthways 55gal blue barrels or any other

Mark


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 Post subject: Re: Sketchup components
PostPosted: Aug 6th, '10, 08:07 
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Seriously, this cant be healthy.
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Like this


Attachments:
blue barrel.JPG
blue barrel.JPG [ 18.33 KiB | Viewed 4809 times ]

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 Post subject: Re: Sketchup components
PostPosted: Aug 6th, '10, 08:12 
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Hmmmm, where is it... I have barrels split both ways and an IBC, just need to find it.. Had troubles uploading it to the 3D warehouse.

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 Post subject: Re: Sketchup components
PostPosted: Aug 6th, '10, 08:21 
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I just made it and haven't loaded it as I didn't have the dimensions.
So not accurate :dontknow:

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