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Electric water heaters cost between $600 and $3,500 to replace, for an average cost of about $2,100. However, many states are phasing out gas water heaters in favor of electric water heaters, so ...
Direct electric resistance tank water heaters are not included in the Energy Star program; however, the Energy Star program does include electric heat pump units with energy factors of 200% or higher. Tankless gas water heaters (as of 2015) must have an energy factor of 90% or higher for Energy Star qualification.
6.5 kg 14 lb 2 kW 2.7 hp 0.31 kW/kg 0.19 hp/lb Conveyor belts, robotics: Kawak 7.5 kW 208 VAC 400 Hz 3-phase synchronous motor [28] 11.8 kg 26 lb 7.5 kW 10.1 hp 0.47 kW/kg 0.29 hp/lb Flight-rated motor for aircraft auxiliary systems (fuel pumps, etc.) Toshiba 660 MVA water cooled 23 kV AC turbo generator: 1,342 t 2,959,000 lb 660 MW
The energy factor for residential water heaters is determined using the results from the 24-hour simulated use test. During the test 64.3±1.0 gallons of water are drawn from the water heater in six equally spaced draws that begin one hour apart. The hot water flow rate for each draw is 3.0±0.25 gallons per minute.
Solar heat is clean and renewable. This is the most modern system. Increasingly, solar powered water heaters are being used. Their solar thermal collectors are installed outside dwellings, typically on the roof or walls or nearby, and the potable hot water storage tank is typically a pre-existing or new conventional water heater, or a water heater specifically designed for solar thermal.
A hybrid water heater is a water heating system that integrates technology traits from both the tank-type water heaters and the tankless water heaters. [5] It maintains water pressure and consistent supply of hot water across multiple hot water applications, and like its tankless cousins, it is efficient and can supply a continuous flow of hot ...
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