I grow hydroponic lettuce in a greenhouse in Missouri. The plants are
watered by a continuous stream of solution, which I also use to heat
and cool the plants instead of heating and cooling the entire
As you probably realize, this still requires a lot of
electricty. What I was wondering, would it be effective to run the
solution underground (like a geosourse heat pump without an exchanger)
to aid in shedding some of the heat from the solution in the summer?
It is my
understanding, that around here, the ground stays a constant 60 F at
least four feet. Would it be effective to bury - say 300 feet at
4 feet deep to help chill the solution or possibly warm it in the
My biggest concerns are that since the temprature gradient is so
narrow that it may take a lot more buried pipe, and electricty to do
the extra pumping, and that it wouldn't be worth it. Any help anyone
could lend would be greatly appriciated.
obviously you've never owned a greenhouse located in a northern
climate.....typically its two layers of glazing seperated by a dead
air space. Anything from double or triple paned glass to corrugated
panels on the outside and a layer of vis-queen on the inside.
Very common is to use a double layer of uv resistant poly film, with a very
small fractional hp blower motor to keep the layers separated.
Hoping to finish adding hydronic mats for to provide 70 deg f bottom heat
into ours early this spring...water source heat pump using outside air,
electric water heater backup.
On Feb 3, 10:56 am, firstname.lastname@example.org wrote:
I dont have to own one and the ones Ive worked in have two (its a huge
operation) 350 hp boilers to heat the water for the in floor piping.
They are constructed with single layer wavy transluced plastic
panels. We service about a dozen greenhouses and they are all the
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