"down the drain" air conditioner

[Danijel Gorupec]

My friend rents a room in a building. The room is in the middle of the building - no outside walls, no outside windows. No way to make a vent for a portable air condition unit (refrigeration type is needed).

 

However there is watter supply and watter drain. Does anyone know if there are small air condition untis that are able to pump heat into the watter? I don't even know what term should I google.

[CaptainPanic]

Assuming you want an airco of about 1 kW, and assuming you can lose that heat by increasing the water temperature by 10 C, you'd have a water flow of about 0.024 liter/s, or about 2 m3 per day. (I hope I calculated that correctly, it was quick). That's an insane amount of water.

 

I think nobody sells those things, because nobody wants them?

 

Maybe there are systems that evaporate water to cool air? I do seem to find something called an evaporative cooler. But in the end, you're gonna have to dump the heat somewhere. Where does the fresh air come in and out of the room?

[Danijel Gorupec]

I was hoping that maybe water could be heated for about 20-30C, to reduce water consumption.... But you are right, hardly there are such units on the market - no demand...

 

The glass-walled room is in the middle of a large hall and gets fresh air (non air conditioned) from there. During hottest days, some cooling would be very much needed.