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A BTU is the energy required to raise one pound of water by one degree Fahrenheit. A US gallon of water weighs 8.3 pounds (3.8 kg). To raise 230 L (60 US gal) of water from 10 °C (50 °F) to 50 °C (122 °F) at 90% efficiency requires 60 × 8.3 × (122 − 50) × 1.11 = 39,840 BTU. A 46 kW (157,000 BTU/h) heater, as might exist in a tankless ...
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.
The company acquired the John Wood Manufacturing Company of California, which produced automatic gas storage water heaters, in 1931. [11] The company expanded overseas to Australia in 1939, building a plant in Sydney to make water heaters. [13] [14] In 1941, the company became the largest manufacturer of automatic water heaters in the United ...
Most of the area will be uninhabitable for weeks or months. Category 5 hurricane (major): 157 mph or higher Catastrophic damage will occur: A high percentage of framed homes will be destroyed ...
Brittany Nims. September 1, 2024 at 7:46 AM. More than 20 of the best Labor Day deals under $100 you need to know about. Whether you like it or not, Labor Day weekend is the unofficial end of ...
Elias Saad scored twice and set up another goal as Hamburg-based cult club St. Pauli claimed its first Bundesliga win for 13 years by 3-0 in Freiburg on Saturday. Saad opened the scoring early ...
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