I assume the water here is doing the work. I didn’t say anything about a closed system, just passive. Maybe that doesn’t count as passive, I don’t know physics all that well.
The person that replied to you is probably being scientific-literal and obnoxious. I understood what you meant just fine. :}
I wouldn’t call it obnoxious, it’s just pointing out that they are using terms that don’t align with what they stated. If nobody ever mentioned the difference, how can they ever learn? Not saying everyone needs “taught” but it really didn’t seem malicious like you seem to believe
The water does not perform work in this instance.
I do not think you’re trying to say the water “does work” in the physics sense, but to clarify, the water is just a large heat sink that has a much higher heat capacity than air. You can heat the water with air (which in turn cools the air), and that water can hold MANY times the heat (per unit mass) that the air can. Water also has a higher thermal conductivity than air. Allowing it to absorb and pass heat very well. This water is in the ground which also acts as a massive heatsink.
The air passes heat to the water which then passes the heat to the ground effectively cooling your air feed. A quick look online says current soil temp in Iran 21 inches deep is 35C or 95 F. That is your lower temperature limit. It’s physically impossible to become colder than the soil temperature (in this instance, as that is your lower temperature bound for heat transfer, in reality you wont even get there, because your driving force for heat flow is gone at that point) without putting in mechanical work (which is what a compressor does in your air conditioner) to compress your cooling fluid so that it may be evaporated repeatedly to exploit the tranfer of heat into an evaporating substance
Why only 21 inches? Soil temps aren’t stable until like 6 feet down, and then it’s closer to 12 C.
Smart vs Facility (and the scramble who go with it)
My dude, I have no idea what you’re trying to say here.
