It hasn't normally been using this method. Air-con was, in times gone by, a protect with the rich. Even as far back as Historic Egypt and Ancient Persia, some kind of primitive air-con system was in use from the palaces of the rich aristocrats. These early air-con models had been according to employing h2o, from time to time in conjunction with cold air, to cool the brickwork on the structures. This type of use for just a important useful resource like h2o, specifically in…