Thanks Ray.
Keith
"Ray" wrote in message
...
Closed. If the were open, evaporation would cool them more rapidly.

--

Ray Barkalow - First Rays Orchids - www.firstrays.com
Plants, Supplies, Artwork, Books and Lots of Free Info!


"keith ;-)" wrote in message
...
Are these heat sinks sealed,or open topped?Does it matter either way.
Cheers Keith
"Ray" wrote in message
...
For what it's worth, I had a 14' x 14', double-layer poly GH when I
lived
in
SC. Each of the two benches consisted of bread trays on top of six
55-gallon steel drums that had been filled with water (and a bit of
antifreeze as a rust inhibitor) and painted flat black.

Keeping in mind that it's real sunny down there, even when it's cold,
there
were times that the nighttime temp in the greenhouse wouldn't drop
below
68°F when it was in the upper teens or 20's outside.

--

Ray Barkalow - First Rays Orchids - www.firstrays.com
Plants, Supplies, Artwork, Books and Lots of Free Info!


"K Barrett" wrote in message
...
*G*! We ain't even into winter yet, LOL!!

Nah, I only wanted to report that the water cost much less than I
thought
it did. And that I was a dolt an forgot to reset the thermostat from
a
day I was working in the GH. Hence yet another 'do over' moment in
my
life.

The lesson to be learned is to check & re-check all your variables,
LOL!!

But you and Pat Brennan are undoubtedly correct in that the water
will
only amelioate the extremes. Which is a good thing.

I've been googling real estate. The Money magazine report on the 100
top
cities in America (found from their link on cities commuter cities)
was
fun to click around on, until you get to the botom of the page and
see
the
weather high/lo and inches of rainfall. Internationally supposedly
the
coast of Croatia ain't bad, but one wonders about living in an ex-war
zone... *G* Then there's the Pacific bays of Honduras. But so far
Costa
Rica near the San Antonio Miguel reserve has me hooked. Ah! To win
the
lottery!

K

Gene Schurg wrote:
KB,

I don't think you will be able to measure savings over a short
period.
Also, I would not expect it to be a huge savings or all of us would
be
living between water filled walls.

The real savings will be on the very hot winter days when the water
can
absorb the radiant heat. In the evening it will slowly release the
heat
back into the greenhouse. If you have a group of days where there
is
little/no difference between the day/night temperature I doubt that
you
would see any savings.

Basically, I would expect the water heat sink would help with the
extreames.

Good growing,
Gene

P.S. I'd still trade winters with you. I hate to see the days get
short
and
cold.



"K Barrett" wrote in message
...

I placed 3 55-gallon drums filled with water in my GH when the
weather
turned cooler. In N calif where I am the winters aren't terribly
cold.
I wanted to see if the thermal mass of the water would reduce the
demand on my heater.

Here's my mixed report.

As some of you may recall I believed any gas savings I would have
received was offset by the cost of the water to fill these 3 drums.
I
just got my water bill, did the math and the cost for the water was
$1.30. So there went that theory, for the better.

However, on the bad side, the weather here has been very mild.
Night's
falling to about 56F. According to my min/max mercury thermometer
the
GH stayed about 61-62F at night. We did have one cold night, it got
to
42F and (!) the heater came on. When I awoke in the AM the the GH
was
68!!! There went that savings, LOL!! I reset the thermostat.

Mulligans

K Barrett