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Sharp portable TV Sharp MD-MS701H. In 1953, Hayakawa Electric started producing the first Japan-made TV sets (the "Sharp TV3-14T"). In 1964, the company developed the world's first transistor calculator (the Sharp CS-10A), which was priced at JP¥535,000 (US$1,400). It took Sharp several years to develop the product as they had no experience in ...
The efficiency of air conditioners is often rated by the seasonal energy efficiency ratio (SEER), which is defined by the Air Conditioning, Heating and Refrigeration Institute in its 2008 standard AHRI 210/240, Performance Rating of Unitary Air-Conditioning and Air-Source Heat Pump Equipment. [61]
Portable/Power Miser: Introduced in 1965 and produced until the early 1990s, this was the first room air conditioner advertised as a portable unit by Friedrich. In 1974, the name Power Miser appeared along with a major engineering change, which saw a less efficient and light duty Tecumseh AH/AJ reciprocating compressor replace the high ...
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An air conditioning system, or a standalone air conditioner, provides cooling and/or humidity control for all or part of a building. Air conditioned buildings often have sealed windows, because open windows would work against the system intended to maintain constant indoor air conditions.
Traditional Al–air batteries had a limited shelf life, [14] because the aluminium reacted with the electrolyte and produced hydrogen when the battery was not in use; this is no longer the case with modern designs. The problem can be avoided by storing the electrolyte in a tank outside the battery and transferring it to the battery when it is ...
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Packaged terminal air conditioner installed in a residential apartment. A packaged terminal air conditioner (PTAC) is a type of self-contained heating and air conditioning system intended to be mounted through a wall. [1] The first practical semi-portable air conditioning unit invented by engineers at Chrysler Motors. It entered the market in ...