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Sub-Zero was founded as the Sub-Zero Freezer Company on August 20, 1945 by Westye F. Bakke in Madison, Wisconsin. [2] In 2000, it acquired the domestic appliance line of the Wolf Range Corporation, [3] a California-based manufacturer of professional-style ranges, cooktops and grills for both home and commercial use.
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 hub also features refrigerators and freezers that can maintain temperatures between −20 and 25 °C (−4 and 77 °F) to facilitate the temporary storage of shipments, especially for critical healthcare deliveries such as COVID-19 vaccines.
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The Fridge Gate method is a theoretical application of using a single logic gate to drive a refrigerator in the most energy efficient way possible without violating the laws of thermodynamics. It operates on the fact that there are two energy states in which a particle can exist: the ground state and the excited state.
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).
They can be used as a normal reusable ice pack by storing in a freezer, but they can also be heated in water or a microwave oven to reach the desired temperature. The first hot and cold pack was introduced in 1948 with the name Hot-R-Cold-Pak and could be chilled in a refrigerator or heated in hot water. [ 3 ]
GoldStar television (VD-191), manufactured in 1966 LG Micro Hi-Fi Audio system, c. 2008. In 1958, LG Electronics was founded as GoldStar (Korean: 금성).It was established in the aftermath of the Korean War to provide the rebuilding nation with domestically produced consumer electronics and home appliances.
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