Anyone try using a greenhouse to save water in a dry climate?

In the next year or so, we are going to be moving to the high desert in New Mexico.  The elevation is about 7,600 ft.  10 inches of rain a year, may be conservative.  I does get cold there, lots of nights below freezing. Even now as we end April, the thermometer is occasionally dropping below freezing.
    I intend to build a 20x30 greenhouse for immediate food production.  It will be built up against a hill and also dug into the ground. I am also putting in passive geothermal heating pipes.  I have heard a lot about using geothermal for heating.  Has anyone tried it for cooling during the summer? I am hoping that with the underground geothermal, that I will be able to keep the temps low enough during the summer, that I won’t have to vent my greenhouse to the low humidity outside air.  I am in essence hoping that I can use the greenhouse to conserve water in an extremely arid environment.
     It would also be nice if the Geothermal cooling would work well enough to actually condense some of the evaporation to be added back to the soil. It may be a pipe dream. As I understand it, the plans for geothermal heating/cooling call for perforated pipe to be run underground because of condensation. How great would it be to use solid wall pipe and have it soloed back to a “well” of sorts, to gather the condensed water?  Could it keep the humidity and heat low enough for plant health in the summer?
    Anyone have any input on this?  I know that greenhouses aren’t exactly permaculture, but sustainability runs through permaculture and I am trying to design a sustainable greenhouse.  I have no practical experience with a greenhouse in such an arid place. We are planing to harvest rainwater for our needs and our food production.  All of my greenhouses have been in Texas where it is it is entirely too hot to grow in one after February.
   

Seems reasonable to both heat/cool with "earthtubes", tied in to the greenhouse. Might take an HVAC guy, or the appropriate set of HVAC calcs, to figure out what benefit you'd get in temps.

I would further investigate the "earthtubing" pages at a site like "The Natural Home":

https://www.thenaturalhome.com/earthtube/

... lots of details about passive geothermal tube systems.

I can't imagine trying to use them for water collection, due to mold potential; if water is there, mold would probably follow. I'd keep the tubes nice and dry, and periodically cleaned out; the above site had a nifty solution to cleaning round earthtubes (nylon string, installed with pipes).

Depending on your humidity levels during night/day cycles (check with home weather system), I'd try for some way to gather moisture out of that ... above-ground, visible, easy access for maintenance. Might also be possible to rake in the frost, when it heats up & evaporates during day ... we always get a "morning drip" cycle after a freezing night.

I do have some fear of mold growing in the cooling pipes.  My thoughts were to use some kind of solid, smooth sided pipe, such as wastewater pvc, and to have it at an intentional slope.   In my pea brain, the slope would cause any condensed water to run to a controlled point, possibly allowing re use in the system. At the same time, I am sure that that moisture with have to attract molds.
    When I was a kid, I had a 100% enclosed terrarium. It grew plants very well.  It required little input from me. Never needed any extra water.  Somehow, there has to be a way to achieve that in a greenhouse!??
    I am in Central Texas, right now.  My observation is that any outdoors temps over about 70 degrees mixed with bright sun, will quickly get too hot for plants. So I have to open the greenhouse and vent the air.  That is fine here, as we have a surplus of rain and the humidity is usually super high.   I would imagine that in the desert, venting a hot greenhouse has to be equivalent to putting your plants in a dehydrator.  All that moisture would leave quickly.  
     I intend to control the afternoon sun with greenhouse positioning, tree cover and shade cloth.  Long term, I hope to use some climbing vine as well.  
     Somehow there has to be a way to do this. I admit my idea goes against what nature is doing out there. Maybe that needs to be the end of the thought process, but even the concept of “Greening the Desert” go against the fundamentals of “desert”.  So for now I will keep dreaming and scheming.


   

The folks at seawatergreenhouse.com are using a different method to capture fresh water via condensation. https://seawatergreenhouse.com
In their design, salt water (or any other non-potable water source) is used to saturate strips of cardboard or other lattice at the opening of the greenhouse. The greenhouse opening is facing the prevalent wind direction such that the wind blowing through the wet cardboard/lattice carries high humidity air into the greenhouse which is then warmed by the greenhouse glazing. The resulting warm humid air is pumped to a sealed radiator that has a cold air or fluid circulating inside. The freshwater condensate collects on the radiator and is collected below.
I don't know if this design is helpful in your context, but it may give you additional options.