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Air surveillance radar: 1 mobile radar system delivered free under the Air Surveillance Radar Phase 1 Project. [24] Mitsubishi Electric J/FPS-3ME Japan: Air surveillance radar: 3 fixed radar systems to be delivered under the Air Surveillance Radar Phase 2 Project. [26] [27] [28] The first unit was fully delivered in October 2023. [29]
An evaporative cooler (also known as evaporative air conditioner, swamp cooler, swamp box, desert cooler and wet air cooler) is a device that cools air through the evaporation of water. Evaporative cooling differs from other air conditioning systems, which use vapor-compression or absorption refrigeration cycles.
The idea of these coolers was founded by the Seiders brothers: two outdoorsmen who felt there were not any coolers that could keep their catch, kills, and beverages cold for a longer period of time. The brothers teamed up with a factory in the Philippines to create an "indestructible cooler", with superior ice retention. [19] [20] [21]
Air is passed through an "enthalpy wheel" (often using silica gel) to reduce the cost of heating ventilated air in the winter by transferring heat from the warm inside air being exhausted to the fresh (but cold) supply air. In the summer, the inside air cools the warmer incoming supply air to reduce ventilation cooling costs. [5]
A pot-in-pot refrigerator, clay pot cooler [1] or zeer (Arabic: زير) is an evaporative cooling refrigeration device which does not use electricity. It uses a porous outer clay pot (lined with wet sand) containing an inner pot (which can be glazed to prevent penetration by the liquid) within which the food is placed.
Throughout the rotation, airflow is produced and having the surrounding being cooled through the process of forced convection heat transfer. Because of its relatively low price, it is the most frequently used out of the three active cooling systems in the residential sector.