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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.
These systems are replaced with liquid circulation pumps and heat exchanger and/or dry cooler systems. Power use at data centers is often measured in terms of power usage effectiveness (PUE). The definitions of PUE for air-cooled devices and liquid immersion cooled devices are different which makes such direct comparisons inaccurate.
Prep for the warm-weather season with the best beach coolers and keep your food and drinks cold for days. From soft bags to hard cases, these are our picks. 13 Beach Coolers That Guarantee Your ...
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Banana transport wagons with gas evaporators have an optimum internal temperature of +14.4 °C (57.9 °F) In addition to proper refrigerated vans, there are covered wagons with thermal insulation and, in some cases, even those are equipped with refrigerating sets. These wagons can only operate at temperatures between 0 and +20 °C (32 and 68 ...
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Common absorption refrigerators use a refrigerant with a very low boiling point (less than −18 °C (0 °F)) just like compressor refrigerators.Compression refrigerators typically use an HCFC or HFC, while absorption refrigerators typically use ammonia or water and need at least a second fluid able to absorb the coolant, the absorbent, respectively water (for ammonia) or brine (for water).