[aidenn0]

Yes, consuming below-ambient liquids can cool you off. This will likely involve some form of refrigeration.

Similarly you could put a giant block of ice in front of a fan and sit there; most people would call this a from of AC though.

[sokoloff]

Indeed, we even still colloquially quote/measure the cooling capacity of air conditioning in "tons".

A ton of cooling being defined as 12000 BTU/hr, or the rate implied by the latent heat of fusion of 1 ton of ice at 0°C being consumed via melting over 24 hours.