Aquaponics Digest - Sun 10/24/99
Message 1: Technical greenhouse question
from Adriana Gutierrez & Dennis LaGatta
Message 2: RE: Technical greenhouse question
from "Ronald W. Brooks"
Message 3: Re: Technical greenhouse question
from Adriana Gutierrez & Dennis LaGatta
Message 4: RE: Technical greenhouse question
from "Ronald W. Brooks"
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| Message 1 |
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Subject: Technical greenhouse question
From: Adriana Gutierrez & Dennis LaGatta
Date: Sun, 24 Oct 1999 15:12:22 -0400
In the next six months I will be facing the prospect of relocating my
greenhouse operation to make way for "progress". I have looked at a
number of properties with existing greenhouses on them and have a couple
of questions for the solar and greenhouse gurus among us:
Most of the greenhouses I've seen are hoop structures. From my research
it appears that because of the nature of the design, hoop structures
require fans year-round because of the way heat is trapped under the
hoop and pushed dowm onto the benches. This raises the operating
costs. In fact one property was available because the current tenant
found the cost of cooling the structures made the business economically
unfeasible. Some of these properties can be purchased at substantial
discounts, such that some additional capital could be invested to
improve the operation of the structures. Among the possibilities that
come to mind:
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?
2. Is there a way to run fans with solar power? This requires some
up-front capital investment but reduces operating costs. If so, what are
the reliability issues related to this equipment? Will sea air and
extreme sunlight lead to a short life for the equipment and lots of
headaches down the road?
Adriana
Sarasota
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| Message 2 |
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Subject: RE: Technical greenhouse question
From: "Ronald W. Brooks"
Date: Sun, 24 Oct 1999 16:56:45 -0400
Adriana
I to have hoop style greenhouses. and yes they can get real hot , tried
misting and fans and such.
But what really worked for me was something very simple.
I took down the one endwall every summer and replaced it with shade cloth to
keep the critters out. Never had the greenhouse heat up past outside temps
again
Ron
The One Who Walks Two Paths
ICQ 44271371
-> -----Original Message-----
-> From: aquaponics
-> [mailto:aquaponics]On Behalf Of Adriana Gutierrez &
-> Dennis LaGatta
-> Sent: Sunday, October 24, 1999 3:12 PM
-> To: aquaponics@townsqr.com
-> Subject: Technical greenhouse question
->
->
-> In the next six months I will be facing the prospect of relocating my
-> greenhouse operation to make way for "progress". I have looked at a
-> number of properties with existing greenhouses on them and have a couple
-> of questions for the solar and greenhouse gurus among us:
->
-> Most of the greenhouses I've seen are hoop structures. From my research
-> it appears that because of the nature of the design, hoop structures
-> require fans year-round because of the way heat is trapped under the
-> hoop and pushed dowm onto the benches. This raises the operating
-> costs. In fact one property was available because the current tenant
-> found the cost of cooling the structures made the business economically
-> unfeasible. Some of these properties can be purchased at substantial
-> discounts, such that some additional capital could be invested to
-> improve the operation of the structures. Among the possibilities that
-> come to mind:
->
-> 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?
->
-> 2. Is there a way to run fans with solar power? This requires some
-> up-front capital investment but reduces operating costs. If so, what are
-> the reliability issues related to this equipment? Will sea air and
-> extreme sunlight lead to a short life for the equipment and lots of
-> headaches down the road?
->
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| Message 3 |
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Subject: Re: Technical greenhouse question
From: Adriana Gutierrez & Dennis LaGatta
Date: Sun, 24 Oct 1999 17:12:28 -0400
Very interesting Ronald, where are you located? Is your other end wall
solid or does the new configuration allow flow-through air flow?
> But what really worked for me was something very simple.
> I took down the one endwall every summer and replaced it with shade cloth to
> keep the critters out. Never had the greenhouse heat up past outside temps
> again
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| Message 4 |
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Subject: RE: Technical greenhouse question
From: "Ronald W. Brooks"
Date: Sun, 24 Oct 1999 23:16:11 -0400
Ardiana
I am located in northern Ohio, The summer I did this the temps were getting
in the high 90's and low 100's. My other end wall is solid with the flue
pipe coming out and a large sliding door. I just kept the sliding door open
with the screen closed plenty of air movement
Ron
The One Who Walks Two Paths
ICQ 44271371
-> -----Original Message-----
-> From: aquaponics
-> [mailto:aquaponics]On Behalf Of Adriana Gutierrez &
-> Dennis LaGatta
-> Sent: Sunday, October 24, 1999 5:12 PM
-> To: aquaponics@townsqr.com
-> Subject: Re: Technical greenhouse question
->
->
-> Very interesting Ronald, where are you located? Is your other end wall
-> solid or does the new configuration allow flow-through air flow?
->
-> > But what really worked for me was something very simple.
-> > I took down the one endwall every summer and replaced it with
-> shade cloth to
-> > keep the critters out. Never had the greenhouse heat up past
-> outside temps
-> > again
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