Abstract: An evaporative air conditioning device which in the cooling section subjects the air to be treated to evaporative cooling. Prior to evaporative treatment, the air is subjected to treatment in a scrubber with spray nozzles emitting a mist or spray directed to the incoming air over substantially the entire cross-sectional area of the duct. The spray removes dust, pollutants, particulates and pollen from the air and also serves to wet the surface of the evaporative media. The air entering the scrubber section is enthalpically heated to expand the air utilizing radiant solar energy which lowers the water content per unit of volume and also lowers the wet bulb temperature. In an preferred embodiment, heat absorbent material is placed adjacent the inlet duct to the scrubber. The water which is directed to the evaporative section and also to the spray nozzles and the scrubber section may also be heated by solar heating means.

Abstract: A preconditioning scrubber device for treating air prior to introduction into an evaporative cooler having spray nozzles in a duct directing a fine mist or spray into the incoming air flow over substantially the entire cross sectional area of the duct. A filter is positioned adjacent the evaporative media. The spray removes dust, pollutants, particulates, dust and pollen from the air and also wets the surface of the evaporative media.

Abstract: An improved evaporative air conditioning device which in the cooling phase subjects the air to be treated to evaporative treatment. Prior to evaporative treatment the air to be treated is enthalpically heated utilizing radiant solar energy or other artificial heating to lower the water content per unit of volume and also lower the wet bulb temperature. In the preferred embodiment, a heat absorbent material is placed adjacent the inlet ducts to the unit. In the heating phase, the device is automatically controlled to provide solar induced heating during periods when sufficient solar energy induced heat is available.

Abstract: An evaporative air conditioning device which in the cooling phase subjects the air to be treated to evaporative treatment. Prior to evaporative treatment the air to be treated is enthalpically heated to expand the air utilizing radiant solar energy to lower the water content per unit of volume and also the wet bulb temperature. In the preferred embodiment, a heat absorbent material is placed adjacent the inlet ducts to the unit. In the heating phase, the device is thermostatically controlled to provide solar induced heating during periods when sufficient solar energy induced heat is available.

Abstract: An apparatus for evaporatively cooling air including an air moving mechanism for supplying air under pressure to an evaporator duct wherein water is sprayed into the airstream countercurrent to the airflow direction. The evaporator duct is especially configured to inhibit moisture migration toward the air moving device and the sprayed water is precooled to increase operating efficiency. A second stage of evaporative cooling may be included by tandemly coupling a second stage evaporator duct to the outlet of the first stage evaporator duct.