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The Einstein–Szilard or Einstein refrigerator is an absorption refrigerator which has no moving parts, operates at constant pressure, and requires only a heat source to operate. It was jointly invented in 1926 by Albert Einstein and his former student Leó Szilárd , who patented it in the U.S. on November 11, 1930 ( U.S. patent 1,781,541 ).
Food in a refrigerator with its door open. A refrigerator, commonly shortened to fridge, is a commercial and home appliance consisting of a thermally insulated compartment and a heat pump (mechanical, electronic or chemical) that transfers heat from its inside to its external environment so that its inside is cooled to a temperature below the room temperature. [1]
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).
Home Improvement is an American sitcom television series created by Matt Williams, Carmen Finestra, and David McFadzean and starring Tim Allen that originally aired on ABC from September 17, 1991, to May 25, 1999. A total of 204 22-minute episodes were produced, spanning 8 seasons. Series overview Season Episodes Originally released Rank Viewers (millions) First released Last released 1 24 ...
The new “high-efficiency electric home rebate program” delivers homeowners in lower income households — earning less than 150% of an area’s median income — up to $14,000 cash back when ...
The coefficient of performance or COP (sometimes CP or CoP) of a heat pump, refrigerator or air conditioning system is a ratio of useful heating or cooling provided to work (energy) required. [1] [2] Higher COPs equate to higher efficiency, lower energy (power) consumption and thus lower operating costs. The COP is used in thermodynamics.
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.
Rolling piston compressors and reciprocating compressors have similar refrigerating effects, and the maximum refrigerating effect can reach 600 kW. [further explanation needed] Reciprocating compressors are the most common type of compressor because the technology is mature and reliable. Their refrigerating effect ranges from 2.2 kW to 200 kW.