Aquaponics Digest - Wed 10/27/99
Message 1: Technical greenhouse question
from "sbyte"
Message 2: Active Greenhouse
from "Barry Thomas"
Message 3: Re: cold
from
Message 4: Re: Strawberries????
from S & S Aqua Farm
Message 5: Re: Active Greenhouse
from "Barry Thomas"
Message 6: Horizontally integrated aquaculture
from Stuart Bunting
Message 7: Re: Technical greenhouse question
from Adriana Gutierrez & Dennis LaGatta
Message 8: Re: Strawberries????
from Adriana Gutierrez & Dennis LaGatta
Message 9: Re: Inflation Fans, In or Out?
from "Jewel" <1mastiff@amigo.net>
Message 10: Re: Power Conservation
from "Jewel" <1mastiff@amigo.net>
Message 11: Re: Inflation Fans, In or Out?
from "Jewel" <1mastiff@amigo.net>
Message 12: Re: Technical greenhouse question
from "Jewel" <1mastiff@amigo.net>
Message 13: Re: Power Conservation
from Dave Miller
Message 14: Re: Power Conservation
from Adriana Gutierrez & Dennis LaGatta
Message 15: Re: Inflation Fans, In or Out?
from PDOSSJR
Message 16: Bananas
from Peggy & Emmett Hoebel
Message 17: RE: Heirloom bananas
from "Ronald W. Brooks"
Message 18: Re: Power Conservation
from "Jewel" <1mastiff@amigo.net>
Message 19: Re: Power Conservation
from "Jewel" <1mastiff@amigo.net>
Message 20: Re: Power Conservation
from Dave Miller
Message 21: Re: Power Conservation
from Adriana Gutierrez & Dennis LaGatta
Message 22: Re: Inflation Fans, In or Out?
from "Jewel" <1mastiff@amigo.net>
Message 23: Re: Inflation Fans, In or Out?
from "Jewel" <1mastiff@amigo.net>
Message 24: Re: Power Conservation
from "Jewel" <1mastiff@amigo.net>
Message 25: Re: Inflation Fans, In or Out?
from PDOSSJR
Message 26: Re: Inflation Fans, In or Out?
from PDOSSJR
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| Message 1 |
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Subject: Technical greenhouse question
From: "sbyte"
Date: Wed, 27 Oct 1999 00:23:10 -1000
>
> 1. Can hoop structures be retrofitted to allow some
> passive convection
> ventilation, avoiding the need for fans and cooling for at
> least some of
> the year? I've seen some advertisements for commercial
> hoop structures
> with what appears to be a vented hoop which lifts up from one side,
> almost creating a sawtooth effect. Or can you put in some
> central ridge
> venting?
The greenhouses I'm running have are Gothic type. They have been
retrofited using wood.
to create a vent all along the top ridge. It is a permenate opening
with a screen. So, it
takes two pieces of plastic. And the screen has to be installed
before you put on the second
piece of plastic.
A six foot piece of 1x1 is attached at the peak , so about three
feet sticks out and 2 ft above. A faica board is
then attached on the end of them.
I'll have to try an get a photo scaned latter.
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| Message 2 |
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Subject: Active Greenhouse
From: "Barry Thomas"
Date: Wed, 27 Oct 1999 12:53:18 +0100
Rob, Marc and all,
I have got somewhat behind with my mail - sorry for the delay.
Some aspects of this idea came up a while ago but as my last post on the
inflation fans thread seemed to cause confusion I am giving a brief
description of it here so that we're all definately thinking about the
same thing. Will respond to the points not covered by this as soon as
possible.
The hope is that these modifications (or something like them) will help
provide better growing conditions at reduced energy and water cost. The
reduction in airflow through the GH should also make other enhancements
such as low humidity, CO2 enrichment etc easier/possible.
The basic structure is just a twin-wall poly tunnel. It does not have an
exhaust fan. There is an inflation fan which introduces air into the
envelope void at one end of the tunnel (the front, say).The fan is
chosen to produce enough pressure for a ridgid envelope and enough
volume to change the interior air at the rate required by the plants
needs for fresh gases and waste removal. The air from the inflation fan
moves down the length of the structure, between the two skins until it
reaches the other end where it is exhausted (at the appropriate rate to
maintain envelope pressure) into the tunnel interior. The air then
travels back along inside the GH, bringing fresh air to the plants and
carrying off waste gases before exiting the tunnel near the front end.
Some measure of heat exchange will occur between incoming/outgoing air.
Even better tracking (and further independence) of airflow and inflation
demands should be achieveable by placing powered butterfly or gate
valves at both envelope to interior exhaust and interior to exterior
exhaust. These valves are fairly simple things and only use power when
changing state. Their overall value (including power saving) easily
outweighs their cost.
The active heat sink. (Stole the basic idea for this from Mike Comets
post to this list regarding temp control of fish tank but could be
common practice for all I know) There are only three main components.
The first is a long loop of water-filled hose distributed around the
interior of the GH. This has a small tank inline at a convenient place
and a pump to circulate the water around the loop. The second - the sink
itself - is a fairly large,
well-insulated tank of water, (probably) located outside the GH. The
third component is a bi-directional heat pump - most easily obtained
(for experimental purposes anyway) from a couple of air-conditioning or
freezer units. As these work in one direction only, two are needed. One
has its cooling coil submerged in the small tank in the GH loop and its
warm coil/radiator submerged in the external sink tank to move heat from
the GH loop to the sink. The other is the same but the other way around
to trasfer heat from sink to GH. Both together can be treated as a
single, two-way heat pump.
As Rob said, when temp differentials are small, heat transfer is slow
and inefficient. The pump of an active heatsink should allow it to
maintain much larger differentials. When cooling is required, heat is
rapidly transferred from GH loop to sink. The large temp diff between GH
loop and internal air should result in more efficient heat transfer for
air to loop, independent (to some extent) of heatsink temp. Heating is
accomplished/aided by pumping heat stored in the sink back to the GH.
When the pump is switched off, heat is unable to transfer in either
direction whatever the difference in temps. As the "saturation" temp of
the sink is likely to be much greater than ambient temps, any excess
heat can be wasted to the atmosphere by a relatively small radiator
(fan-assisted or use some exhaust from GH).
So, the exhaust fan which previously had the dual purpose of providing
adequate fresh air intake and reducing maximum temps is removed. Air
intake is now provided by the inflation fan, this seems to match well
with it's other purpose. The heatsink (along with a heater for cold
weather - this could itself be part of the sink) takes on the task of
thermal
management which it can now do without affecting - or being much
affected by - anything else (although it seems possible that the GH loop
could act as dehumidifier/water recovery?).
An additional water recovery unit at the final GH outlet (hopefully now
possible due to greatly reduced airflow) using a heat exchanger cooled
by another heat pump could help to further pay for its running costs if
the warm output from the pump also goes into the heatsink so you grab
back some of the heat from the outgoing air as well.
Another cost saving possibility which makes use of the external sink is
that during cold periods, a few small, cheap wind turbines (or whatever)
could dump their output into the sink via electric heater coil, adding
energy to the system while avoiding need for extra batteries,
regulators, controllers etc.
I'm only suggesting this approach as a basic core which might allow
better/easier integration between subsystems and give the controller
greater scope to manipulate the structure and the energy it contains
without sacrificing too much of the protection you wanted from the GH in
the first place. Changes and additions will of course be needed to suit
particular needs.
As I say, this post is intended to help explain a previous one but any
thoughts/corrections anyone has about individual points or the whole
idea will be gratefully received.
Barry
barrythomas@crosswinds.net
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| Message 3 |
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Subject: Re: cold
From:
Date: Wed, 27 Oct 1999 8:00:09 + 5 EST
Live and run a system in upstate NY - lots of heavy lake effect snow and
cold temps - no problems, as long as
you live by the manual!
Mike
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| Message 4 |
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Subject: Re: Strawberries????
From: S & S Aqua Farm
Date: Wed, 27 Oct 1999 07:27:55 -0500
At 08:35 PM 10/26/1999 +1000, Robert wrote:
> I have just purchased a flood and drain system for strawberries
> and I wish to place this into my aquaculture system.
>
> Does any one have advice, mainly on the side of applying
> the additional nutrients (iron, calcium, etc.) The other
> area which needs to be addressed is the PH - my fish stock
> is around 7.5, and strawberries prefer 6.5, any ideas????
Robert, is this system a "standard" hydroponics system that you're going to
add to your aquaculture set-up? If so, I can't be much help; but we did
have success with strawberries in our gravel bed aquaponics system. Our
incoming water pH is 7.3, and the strawberries were a variety of
June-bearing. Because we'd heard that they would not produce without
additions, we were not especially hopeful when we tried them; but were
pleasantly surprised that they did produce. Of course, this is probably
just one more example of our desire to trial everything ourselves instead of
always taking the word of "experts".
It's probable that the gravel/bacterial action itself has some affect, and
so I wonder if you couldn't modify your system somewhat. What components
are in your flood and drain system, space allocated, are you recirculating
back to the tanks?
It's always fulfilling to be able to produce part of the family's food
supply, but it's absolutely thrilling to produce strawberries in January in
Missouri -- almost feels "decadent" to be eating fresh berries with snow on
the ground.
Paula
S&S Aqua Farm, 8386 County Road 8820, West Plains, MO 65775 417-256-5124
Web page http://www.townsqr.com/snsaqua/
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| Message 5 |
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Subject: Re: Active Greenhouse
From: "Barry Thomas"
Date: Wed, 27 Oct 1999 15:51:46 +0100
> Rob, Marc and all,
Sorry Ron - the kind of typing error that's easy to miss but should have
caught it anyway.
Barry
barrythomas@crosswinds.net
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| Message 6 |
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Subject: Horizontally integrated aquaculture
From: Stuart Bunting
Date: Wed, 27 Oct 1999 16:32:57 +0100
Dear List members,
I would like to invite you to participate in a Delphi investigation
regarding the management of wastewater from aquaculture. The study aims to
focus on the potential of horizontal integration as a management strategy
for wastewater from commercial aquaculture. The term "horizontally
integrated aquaculture" is used here to describe culturing aquatic species
in the wastewater from commercial aquaculture, reducing the concentration of
pollutants and potentially conferring benefits to the operator, environment
and stakeholder groups. Examples include the culture of seaweed and
shellfish in the wastewater from shrimp ponds and marine cage facilities and
the use of constructed wetlands planted with reeds or mangroves to treat the
wastewater from landbased freshwater of marine/brackish aquaculture,
respectively.
If you would like to take part in this study please reply to me personally
(swb1@stir.ac.uk). I hope that the results of this study will help focus
interest and resources on high potential systems, and that the publication
of results will help raise awareness of horizontally integrated aquaculture,
including the real world constraints to developing these systems and their
potential.
Yours sincerely,
Stuart Bunting
PhD student
Institute of Aquaculture
University of Stirling
Stirling
Scotland
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Subject: Re: Technical greenhouse question
From: Adriana Gutierrez & Dennis LaGatta
Date: Wed, 27 Oct 1999 12:18:14 -0400
That's pretty much what I had in mind. It may work better with a gothic
structure since the angle of the roof is steeper. I would think that
this angle would faciltate air flow up and out. In contrast, a hoop
structure might trap heat in the gentle curve of the roof. Still, I
would think some venting would be better than none. On the other hand,
if simply replacing one end wall with screen is sufficient to equalize
indoor and outdoor temperatures this may be a simpler solution.
> > 1. Can hoop structures be retrofitted to allow some
> > passive convection
> The greenhouses I'm running have are Gothic type. They have been
> retrofited using wood.
> to create a vent all along the top ridge.
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| Message 8 |
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Subject: Re: Strawberries????
From: Adriana Gutierrez & Dennis LaGatta
Date: Wed, 27 Oct 1999 12:39:20 -0400
Hi Robert,
I just came across the information that you requested. The USDA
conducted strawberry research using trout effluent at its Appalachian
fruit Research Station in West Virginia. Dr. Fumiomi Takeda
(ftakeda@afrs.ars.usda.gov) sent me his complete report. On the issue
of nutrients it states:
"Since nutrient concentrations in aquaculture effluent were about 15% of
the levels measured in commercial nutrient solution the following
nutrients were supplemented (mg/l): NO3-N(18), P(0.7), K(5), Ca(55),
Mg(20) AND s(9) and all micronutrients."
In another part of the report he states:
" Since many nutrients were low the following nutrients were added to
aquaculture effluent: 0.1 mg/L Fe-EDDHA (LibFer SP, Allied Colloidals,
Inc., Suffolk, VA), 0.10 mg/L Mn-EDTA (Librel Mn, Allied Colloidals,
Inc., Suffolk, VA), 15.0 mg/L K (K2SO4), and 0.0044 mg/L Mo
[(NH4)6Mo7O24). Granular micronutrients (Sierra Chemical Corp,
Milpitas, CA) (2.0 g/pot) were applied monthly)."
There was no mention in the report of any adjustments to the pH of the
incomeing effluent, which was 7.2. They also brought bumblebees into
the greenhouse for germination.
Adriana
> > I have just purchased a flood and drain system for strawberries
> > and I wish to place this into my aquaculture system.
> >
> > Does any one have advice, mainly on the side of applying
> > the additional nutrients (iron, calcium, etc.) The other
> > area which needs to be addressed is the PH - my fish stock
> > is around 7.5, and strawberries prefer 6.5, any ideas????
>
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| Message 9 |
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Subject: Re: Inflation Fans, In or Out?
From: "Jewel" <1mastiff@amigo.net>
Date: Wed, 27 Oct 1999 13:10:25 -0600
> I will assume you are getting 115V and 230 V from your
> leased PV system and you may not modify it nor is DC power
> available to you. Please correct me if my assumptions are
> off as a direct DC connection may give further energy
> savings.
>
Thanks for the response Marc. No, it's more like a lease to own deal, and
we can tap it anyway we want, including DC. It's a 48 v dc system, and
includes 2 trace 48 v inverters for AC.
> Are you running your pumps in the most efficient part of
> their curve? I typically will find a beautiful 75 to 90 plus
> percent capable system running at 25 to 50 percent or worse.
>
Sorry, I don't understand what that means. We were planning on using the
sears pumps S&S recommends, and finding a timer that would let us run it
once an hour to flood the beds, then use a larger tank for the bed drain, so
the return would be less frequent.
> Did you select an efficient or the most efficient pump,
> manufacturer or model for your application?
>
Tom said he's tried a lot of pumps, many of which failed, so we were going
to stick with the sears AC pumps, which is a less efficient way to go, but
perhaps more reliable.
> Did the wiring design take into account motor start up
> surges that may take 3 to 8 times the starting current than
> normal running current?
>
We were hoping to find an accurate enough timer so we could "time" each node
differently, so we wouldn't have a multiple load of pumps turning on at the
same time.
> Intelligent motor controllers can be used to run a pump or
> blower motor. If properly selected and setup they can
> provide significant efficiency gains over a direct hook-up.
> A major public electric utility in the Denver, CO area was
> giving major rebates to companies that added motor
> controllers to the air conditioner, pumping and other plants
> AND the controllers and labor did NOT come from the utility.
> This was cheaper than adding generating capacity.
>
I'd like to know more about the intelligent motor controllers!
> There are Freon operated shutters that automatically open in
> sunlight and close towards dark without electricity with the
> purpose of automatically insulating your structure.
Where do you get those?
> Passive heat collection schemes abound that use vertical
> elevation distance to cause air and coolant flow by
> convection rather than pumps or blowers.
I'd love to hear details.
>
> All appliances in your home are not created energy
> efficiency equal.
We have a watt meter that we've tested all appliances with, and are going
with LED and florescent lights.
>
> My cat has a cold and sneezed on me. Gross.
>
Try hooking it up to 220 volt AC. It should stop the sneezing.
> Marc
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Subject: Re: Power Conservation
From: "Jewel" <1mastiff@amigo.net>
Date: Wed, 27 Oct 1999 13:12:01 -0600
Dave, you're a drummer? Where?
> A remodeler, drummer, Kindred Spirit...
>
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Subject: Re: Inflation Fans, In or Out?
From: "Jewel" <1mastiff@amigo.net>
Date: Wed, 27 Oct 1999 13:14:08 -0600
> go. Also, unless you have a huge array, they are necessary for battery
> equalization that must be done every month or two. There is a lot to know
> about deep cycle batteries to get the most life out of them. A regular
> generator is really over kill for battery charging since the deep cycle
> batteries should only be charged between 10-20% of their amp hr rating.
>
> Paul
Are you familar with the Absolite II batteries?
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Subject: Re: Technical greenhouse question
From: "Jewel" <1mastiff@amigo.net>
Date: Wed, 27 Oct 1999 13:21:34 -0600
I don't think there's going to be much different between a gothic and an
arch as far as venting, but the arch will be much stronger in a hurricane,
which could be an issue in your area. The arch is probably the next
strongest thing to a dome.
Jewel
> That's pretty much what I had in mind. It may work better with a gothic
> structure since the angle of the roof is steeper. I would think that
> this angle would faciltate air flow up and out. In contrast, a hoop
> structure might trap heat in the gentle curve of the roof. Still, I
> would think some venting would be better than none. On the other hand,
> if simply replacing one end wall with screen is sufficient to equalize
> indoor and outdoor temperatures this may be a simpler solution.
>
>
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Subject: Re: Power Conservation
From: Dave Miller
Date: Wed, 27 Oct 1999 17:06:40 -0400
Thanks Jewel, I am a hand drummer and percussionist in a group I formed
called EarthMovers Drum Collective. We play out from time to time and
hold open drum circles. Lots of fun! That's a bit about me. How about
the passions and hobbies of others in the group???
Dave
_______________________________________
«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»§«¤»¥«¤»§«¤»
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
A remodeler, drummer, Kindred Spirit...
Put a pebble in your pocket and a penny in your shoe!
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Subject: Re: Power Conservation
From: Adriana Gutierrez & Dennis LaGatta
Date: Wed, 27 Oct 1999 18:49:35 -0400
Speaking of percussion, has anybody seen Stomp?
> Thanks Jewel, I am a hand drummer and percussionist in a group I formed
> called EarthMovers Drum Collective.
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Subject: Re: Inflation Fans, In or Out?
From: PDOSSJR
Date: Wed, 27 Oct 1999 19:24:39 EDT
In a message dated 10/27/99 2:14:00 PM Central Daylight Time,
1mastiff@amigo.net writes:
<< Are you familar with the Absolite II batteries? >>
No, I'm sorry I'm not. I'm not running a 48v system though. That's a real
hoss! I do have contact with many AE people, maybe I can find out something.
What are you interested in knowing? I'm a Trojan man myself.
Paul
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Subject: Bananas
From: Peggy & Emmett Hoebel
Date: Wed, 27 Oct 1999 19:54:14 -0400
Hey there bc.
All that has been said so far is true. In addition you might have a variety
that is grown for its foliage (you said they were pretty), its flower
..some strange ones, or there is one grown for its fiber, you know, to make
ropes. When I saw your messages I contacted a local banana expert (world
renowned) here in the Tampa area. Besides heavy feeding in the first three
months he suggested constant heavy feeding of potash (in aquaponics I guess
this would be banana skins in the blender) while keeping the N low. Also
he suggested a variety known as Rajapuri. I'll quote from his info:
Rajapuri- From India. It is probably the hardest and toughest of all bananas.
Six to eight feet tall, thick stem, medium size heads of sweet fruit. Produces
fruit in seven months and ripens in eight to ten weeks. Very cold and wind
resistant. The one banana for the person who expects fruit with little effort.
The flower is eatable after cooking.
This last point is kinda weird, in all of my travels I've never met anyone
who has mentioned the delicious banana flower they ate.
Em
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Subject: RE: Heirloom bananas
From: "Ronald W. Brooks"
Date: Wed, 27 Oct 1999 20:03:46 -0400
This is a multi-part message in MIME format.
------=_NextPart_000_0002_01BF20B6.60754CA0
Content-Type: text/plain;
charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
Jewel
Almost all the eating type banana's are sterile. New varieties are produced
by mutation , not hybridization. The few varieties that do produce seed
produce inedible fruit 99% of the time.
But I pulled down my books on Banana production and found a variety that
seems to fill your description. It is called White Iholene. You can go to
http://www.stokestropicals.com
To see and order a pup ( vegetative division ) the cost in the catalog runs
around $19.95
Ron
[Ron replies] -----Original Message-----
From: aquaponics
[mailto:aquaponics]On Behalf Of Jewel
Sent: Tuesday, October 26, 1999 5:56 PM
To: aquaponics mail group
Subject: Heirloom bananas
Does anyone know of a source of Heirloom or non-hybrid banana
seeds/seedlings? We ate some in Belize once - very different - small,
orange, and sweet like a mango.
Jewel
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| Message 18 |
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Subject: Re: Power Conservation
From: "Jewel" <1mastiff@amigo.net>
Date: Wed, 27 Oct 1999 18:46:17 -0600
Stomp?
> Speaking of percussion, has anybody seen Stomp?
> > Thanks Jewel, I am a hand drummer and percussionist in a group I formed
> > called EarthMovers Drum Collective.
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| Message 19 |
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Subject: Re: Power Conservation
From: "Jewel" <1mastiff@amigo.net>
Date: Wed, 27 Oct 1999 18:48:24 -0600
> hold open drum circles. Lots of fun! That's a bit about me. How about
> the passions and hobbies of others in the group???
>
> Dave
>
Music, more music, yoga, and non-random acts of kindness.
Jewel
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| Message 20 |
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Subject: Re: Power Conservation
From: Dave Miller
Date: Wed, 27 Oct 1999 20:54:54 -0400
Stomp and Blue Man Group In Tube are faves!!!
--
_______________________________________
«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»§«¤»¥«¤»§«¤»
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
A remodeler, drummer, Kindred Spirit...
Put a pebble in your pocket and a penny in your shoe!
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| Message 21 |
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Subject: Re: Power Conservation
From: Adriana Gutierrez & Dennis LaGatta
Date: Wed, 27 Oct 1999 20:57:32 -0400
Stomp is a group of percussionists who use unconventional instruments
such as push-brooms, hub-caps and yes, even the kitchen sink to put on
an incredible show. They have been touring nationally for the past
couple of years and are truly worth seeing. (My apologies to the group
for this off-topic thread. Out of courtesy for the rest let's continue
it via e-mail if anybody's
interested.
Adriana
Jewel wrote:
>
> Stomp?
>
> > Speaking of percussion, has anybody seen Stomp?
> > > Thanks Jewel, I am a hand drummer and percussionist in a group I formed
> > > called EarthMovers Drum Collective.
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| Message 22 |
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Subject: Re: Inflation Fans, In or Out?
From: "Jewel" <1mastiff@amigo.net>
Date: Wed, 27 Oct 1999 18:56:12 -0600
They just sound real good, and have a very long life span. You can read
about them in the battery comparison chart of the Mr. Solar website. It's
what we plan to go with for our system, so hopefully they're as good as they
sound.
> << Are you familar with the Absolite II batteries? >>
>
I'm a Trojan man myself.
>
Ribbed or plain? Sorry, couldn't help myself.
> Paul
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| Message 23 |
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Subject: Re: Inflation Fans, In or Out?
From: "Jewel" <1mastiff@amigo.net>
Date: Wed, 27 Oct 1999 18:57:52 -0600
Oh, I forgot, do you know of any solar inflation blowers?
> hoss! I do have contact with many AE people, maybe I can find out
something.
> What are you interested in knowing? I'm a Trojan man myself.
>
> Paul
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| Message 24 |
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Subject: Re: Power Conservation
From: "Jewel" <1mastiff@amigo.net>
Date: Wed, 27 Oct 1999 19:01:47 -0600
We could bring it back in topic by forming our own group banging on tilapia
tanks, nutrient drums, growing beds. Then seeing if it has any affect on
fish and plants! Sorry, in a silly mood tonight.
----- Original Message -----
From: Adriana Gutierrez & Dennis LaGatta
To:
Sent: Wednesday, October 27, 1999 6:57 PM
Subject: Re: Power Conservation
> Stomp is a group of percussionists who use unconventional instruments
> such as push-brooms, hub-caps and yes, even the kitchen sink to put on
> an incredible show. They have been touring nationally for the past
> couple of years and are truly worth seeing. (My apologies to the group
> for this off-topic thread. Out of courtesy for the rest let's continue
> it via e-mail if anybody's
> interested.
> Adriana
>
> Jewel wrote:
> >
> > Stomp?
> >
> > > Speaking of percussion, has anybody seen Stomp?
> > > > Thanks Jewel, I am a hand drummer and percussionist in a group I
formed
> > > > called EarthMovers Drum Collective.
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| Message 25 |
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Subject: Re: Inflation Fans, In or Out?
From: PDOSSJR
Date: Thu, 28 Oct 1999 00:15:29 EDT
In a message dated 10/27/99 7:55:48 PM Central Daylight Time,
1mastiff@amigo.net writes:
Jewel,
<< Are you familar with the Absolite II batteries? >>
<< They just sound real good, and have a very long life span. >>
I have seen Mr. Solars website, but its been awhile. I know there are a lot
of other good batteries out there, big old 2v deals, NiCad, NiFe, etc. They
are just beyond my reach. With batteries it all boils down to cost per amp hr
and life span. The Trojan L16 is a pretty good mix of the two.
As for your last comment, all I can say is. "mercy."
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| Message 26 |
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Subject: Re: Inflation Fans, In or Out?
From: PDOSSJR
Date: Thu, 28 Oct 1999 00:45:51 EDT
In a message dated 10/27/99 7:57:13 PM Central Daylight Time,
1mastiff@amigo.net writes:
<< Oh, I forgot, do you know of any solar inflation blowers? >>
I have heard of people using the small computer fans for similar projects.
Cheap, lots of old 286's, 386's and 486's out there for scrap. They use very
little energy, however it's x 24hr a day. You would have to step down your
voltage. Probably other common things out there that could be used. The
Surplus Center is a good source of motors, blowers, etc. They are at
402-474-4055 for catalog. They show a 48v DC fan, 240 CFM, .46 amps. (that is
still around 530 watts in 24 hrs.) for $8.99. They have the new muffin fans
from $6-11. Not saying this would work for you, just an example.
There was some discussion about conservation. Remember those ghost loads,
TV's, Microwaves, clocks, etc. that continue to use power even when not
turned on. Connect them to wall switches where possible. It's a bummer to
have to keep reprograming them though.
Paul
The scrounger.
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