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Lloyd Groff Copeman (December 28, 1881 – July 5, 1956) [1] was an American inventor who devised the first electric stove and the flexible rubber ice cube tray, among other products. He had nearly 700 patents to his name, and he claimed that he could walk into any store and find one of his inventions.
Most electric coolers have an undervoltage shutoff at around 10 or 10.5 volts to prevent this. Many come with power adapters, which use an electronic transformer to convert AC mains or line voltage down to 12 volts, with a lighter-like socket for the cooler's cord to plug in. Some also have a crossover-connection device to reverse the current ...
For several years starting around 2004, the Coleman Company sold a version of the Twinbird "SC-C925 Portable Freezer Cooler 25L" under its own brand name, [39] [40] but it has since discontinued offering the product. The portable cooler can be operated more than a day, maintaining sub-freezing temperatures while powered by an automotive battery ...
Coleman County Electric Cooperative, Inc. is a non-profit rural electric utility cooperative headquartered in Coleman, Texas. The Cooperative was organized in 1937, and established under the federal Rural Electrification Act .
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1875 – Raoul Pictet develops a refrigeration machine using sulphur dioxide to combat high-pressure problems of ammonia in when used in tropical climates (mainly for the purpose of shipping meat). 1876 – Carl von Linde patented equipment to liquefy air using the Joule Thomson expansion process and regenerative cooling [14]
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).