OK, a splash of reality.
A 12,000 BTU A/C is known as "one ton" in some parts of the world because it produces the same cooling effect (if running at 100% duty cycle) as melting 1 ton of ice over 24 hours.
Our 9,000 BTU unit would be 0.75 tons which would (using our 30% duty cycle) need 250kg of ice every 24 hours!
The melting-ice coolers do work, but in reality, they only produce a stream of cooled air for a relatively short time.