Alt-BEAM Archive

Message #01539



To: "van Zoelen, Bram SSI-TSEA-352" Bram.A.A.vanZoelen@is.shell.com
From: Steven Bolt sbolt@xs4all.nl
Date: Tue, 16 Mar 1999 15:26:11 +0100 (CET)
Subject: [alt-beam] Re: `Green Thumb'


On Tue, 16 Mar 1999, van Zoelen, Bram SSI-TSEA-352 wrote:

> The resorvoir don't have to be right above the plant. It can be at a
> different location as long as the surfave of the water is above the level of
> the dripping point. A pump isn't necessary because you can make use of the
> phenomen of 'communication vessels'.

I know all that, but long pipelines are not appreciated by other
members of the household - and I don't like them myself. A reservoir
above plant level just isn't practical in most situations.

> Then all you need is a valve to stop the flow. If you use a valve
> that is closed while not operated then you only need energy when
> you want to open it. Hence the system has a safety in it and the
> resorvoir stay filled as the power drops off.

The only valves of this type which are afaik available as standard
parts, are intended for high water pressures and require too much
electrical power. Such valves aren't much less difficult to
design/build than small pumps, which would allow a potted plant to
be situated on top of its own flat, round reservoir.

> A schematic drawing just to get an idea
---8<---
> Sorry, too many thoughts at the moment bubbling up :0)

:)

Steve

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# sbolt@xs4all.nl # Steven Bolt # popular science monthly KIJK #
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