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  2. Recreational vehicle terms - Wikipedia

    en.wikipedia.org/wiki/Recreational_vehicle_terms

    The house batteries are separate and isolated electrically from the vehicle batteries, known in this context as engine batteries that are used to start and operate the motor vehicle part of the RV (motor of a motorhome, car or truck for tow vehicles or campers). RV batteries differ from car or truck batteries in that they are 'deep cycle ...

  3. Gasoline heater - Wikipedia

    en.wikipedia.org/wiki/Gasoline_heater

    Electricity is required to heat the ignition source, with systems designed to be compatible with 6-volt, 12-volt, and 24-volt automotive and aircraft electrical systems. Most gasoline heaters produce between 5,000 and 50,000 BTU per hour. A built-in safety switch prevents fuel from flowing unless the fan is working.

  4. Flash boiler - Wikipedia

    en.wikipedia.org/wiki/Flash_boiler

    A flash boiler is a type of water-tube boiler. The tubes are close together and water is pumped through them. A flash boiler differs from the type of monotube steam generator in which the tube is permanently filled with water. In a flash boiler, the tube is kept so hot that the water feed is quickly flashed into steam and superheated.

  5. Water heating - Wikipedia

    en.wikipedia.org/wiki/Water_heating

    Energy Star-qualified natural gas and propane tank water heaters (as of September 2010) have energy factors of 67% or higher, which is usually achieved using an intermittent pilot together with an automatic flue damper, baffle blowers, or power venting.

  6. Automobile auxiliary power outlet - Wikipedia

    en.wikipedia.org/wiki/Automobile_auxiliary_power...

    For the 12 volt systems, the center contact is the positive terminal and the shell is the negative terminal. Most automobiles connect the negative terminal to the frame of the vehicle (negative ground). 12 volt auto connectors are made to comply with a standard by Underwriters Laboratories for safety. UL2089 was developed to cover the ...

  7. Tankless water heating - Wikipedia

    en.wikipedia.org/wiki/Tankless_water_heating

    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 ...