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Gas water heaters have an exhaust vent or one to two exhaust pipes on the top, and still require electric power for electronics, sensing and ignition. A three-phase, 21 kW, 400-volt tankless water heater in Europe, with new European color coding for three-phase power. There are also heaters that use several single-phase circuits instead.
Rinnai Corporation. Rinnai Corporation is a Japanese multinational company based in Nagoya, Japan, that manufactures gas appliances, including energy-efficient tankless water heaters, [4] home heating appliances, kitchen appliances, gas clothes dryers and commercial-use equipment such as rice cookers, grillers, fryers and salamanders. Rinnai is ...
The main disadvantage is their much higher initial costs; a US study in Minnesota reported a 20- to 40-year payback for the tankless water heaters. [citation needed] In a comparison to a less efficient natural gas fired hot water tank, on-demand natural gas will cost 30% more over its useful life. [dubious – discuss] [citation needed]
Heat traps are valves or loops of pipe on the cold water inlet and hot water outlet of water heaters. The heat traps allow cold water to flow into the water heater tank, but prevent unwanted convection and heated water to flow out of the tank. [1][2] Newer water heaters have built-in heat traps.
In September 1968, Shinshu Seiki launched the world's first mini-printer, the EP-101 ("EP" for Electronic Printer), which was soon incorporated into many calculators. In June 1975, the name Epson was coined for the next generation of printers based on the EP-101, which was released to the public. The Epson name was coined by joining the ...
The on-line textbook: Information Theory, Inference, and Learning Algorithms, by David J.C. MacKay, contains chapters on elementary error-correcting codes; on the theoretical limits of error-correction; and on the latest state-of-the-art error-correcting codes, including low-density parity-check codes, turbo codes, and fountain codes.
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Yellow dots on white paper, produced by color laser printer (enlarged, dot diameter about 0.1 mm) Printer tracking dots, also known as printer steganography, DocuColor tracking dots, yellow dots, secret dots, or a machine identification code (MIC), is a digital watermark which many color laser printers and copiers produce on every printed page that identifies the specific device that was used ...
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