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They are called zeer, hence the name of the pot cooler. Despite being developed in Northern Africa, the technology appeared to have been forgotten since the advent of modern electrical refrigerators. However, in the Indian subcontinent, ghara, matka and surahi, all of which are different types of clay water pots, are in everyday use to cool ...
Unlike other types of air conditioners, evaporative coolers rely on the outside air to be channeled through cooler pads that cool the air before it reaches the inside of a house through its air duct system; this cooled outside air must be allowed to push the warmer air within the house out through an exhaust opening such as an open door or window.
The percentage of free cooling achieved mid-season is dependent on seasonal temperatures although partial free cooling commences when the ambient air temperature is 1 °C below the process return water temperature. The water is partially cooled through the free cooler, then flows through the chillers to achieve the required set point temperature.
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.
Passive cooling covers all natural processes and techniques of heat dissipation and modulation without the use of energy. [1] Some authors consider that minor and simple mechanical systems (e.g. pumps and economizers) can be integrated in passive cooling techniques, as long they are used to enhance the effectiveness of the natural cooling process. [7]
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Whether the spring equinox finds you getting this year's garden underway, washing windows or simply basking in the warm weather, you may be in search of a spring quote or two to seize the moment.
They are made by the combination of two types of clay: the first is taken from the surface of the earth and the second after digging more than 10 feet deeper into the earth. Making a matka is a long process of at least 8 days. The clay is mixed with water, shaped, finished, polished, dried and fired in a kiln for 5 days.