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Kelvinator ad from 1920 Kelvinator refrigerator, c. 1926. The enterprise was established on September 18, 1914, in Detroit, Michigan, United States, by engineer Nathaniel B. Wales, who introduced his idea for a practical electric refrigeration unit for the home to Edmund Copeland and Arnold Goss.
The brand was originally created for a line of refrigerators. Other products sold under the Coldspot brand included freezers, dehumidifiers, and window air conditioning units. Many of these products were manufactured for Sears by Seeger Refrigeration, which was purchased by Sunbeam, giving the new name Seeger-Sunbeam.
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).
The company was purchased by Frank Gibson, a competing manufacturer of "ice refrigerators" in the early 1900s. It was the largest in its industry at the time. In 1931, the company began making electric refrigerators. [1] During the Second World War, Gibson manufactured 1,078 Waco CG-4 troop and cargo assault gliders under license.
An ultra low temperature (ULT) freezer is a refrigerator that stores contents at −80 to −86 °C (−112 to −123 °F). [1] An ultra low temperature freezer is commonly referred to as a "minus 80 freezer" or a "negative 80 freezer", referring to the most common temperature standard. [2] ULT freezers come in upright and chest freezer formats.
Commercial refrigerator and freezer units were in use for almost 40 years prior to the common home models. The freezer-over-refrigerator style had been the basic style since the 1940s, until modern, side-by-side refrigerators broke the trend. A vapor compression cycle is used in most household refrigerators, refrigerator–freezers and freezers.
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