geothermal exchange help

Greetings, 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 greenhouse. 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 winter? 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.
Thanks, Travis Kroner
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At what temp is the water at when it exits the well ( or other water source ) and how many gpm can you consistantly obtain from it ?
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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.
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wrote:

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.
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On Feb 3, 10:56 am, snipped-for-privacy@gonefishin.net 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 same way.
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