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Another trick is for homes with multiple stories: face the window fan into the house on your lowest story to bring in the cooler air. The warmer portion of this air will naturally rise to the top ...
Unlike window air conditioners, which work to fill up an enclosed space with cooler air, evaporative coolers simply push cool air outward, so you can use them outside and in spaces like screened ...
Whole house fans were the only method for cooling homes in the early 1900s. Air conditioning was invented by Carrier in 1907 but did not become popular until the 1950s. Whole house fans are still ideal for cooling homes when the air outside is cooler than the air inside. [citation needed]
The outside air comes in contact with water inside the tower either through a wetted membrane or a mister. As water evaporates in the outside air, the air becomes cooler and less buoyant and creates a downward flow in the tower. At the bottom of the tower, an outlet allows the cooler air into the interior.
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]
In its own internal testing, Oyster benchmarked against a 24-liter CVS cooler (which uses air insulation) and two Yeti coolers—a soft-sided Hopper 18 and the hard-sided Tundra 45.
Night-flushing cools the house by increasing ventilation at night, when the outdoor air is cooler; windtowers can assist night flushing. [16] A windcatcher can also cool air by drawing it over cool objects. In arid climates, the daily temperature swings are often extreme, with desert temperatures often dipping below freezing at night.
Relies on temperature differences (inside/outside) Design restrictions (height, location of apertures) and may incur extra costs (ventilator stacks, taller spaces) The quality of air it introduces in buildings may be polluted for example due to proximity to an urban or industrial area (although this can also be a factor in wind-driven ventilation)
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