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2. Water heating - Wikipedia

   en.wikipedia.org/wiki/Water_heating

   Where hot-water space heating boilers are installed, domestic hot water cylinders are usually heated indirectly by primary water from the boiler, or by an electric immersion heater (often as backup to the boiler). In the UK these vessels are called indirect cylinders and direct cylinders, respectively. Additionally, if these cylinders form part ...

3. Water jacket - Wikipedia

   en.wikipedia.org/wiki/Water_jacket

   Water jackets were used to cool the barrels of machine guns until several years after the First World War, but modern machine guns are air-cooled to conserve weight and hence increase portability. In a reciprocating piston internal combustion engine , the water jacket is a series of holes either cast or bored through the main engine block and ...

4. Hot water storage tank - Wikipedia

   en.wikipedia.org/wiki/Hot_water_storage_tank

   A hot water storage tank (also called a hot water tank, thermal storage tank, hot water thermal storage unit, heat storage tank, hot water cylinder, and geyser) is a water tank used for storing hot water for space heating or domestic use. Water is a convenient heat storage medium because it has a high specific heat capacity. This means ...

5. Tankless water heating - Wikipedia

   en.wikipedia.org/wiki/Tankless_water_heating

   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 water on demand. [6] The hybrid approach is designed to eliminate general shortcomings of other technologies.

6. Jacketed vessel - Wikipedia

   en.wikipedia.org/wiki/Jacketed_vessel

   A jacket is a cavity external to the vessel that permits the uniform exchange of heat between the fluid circulating in it and the walls of the vessel. There are several types of jackets, depending on the design: [1] Conventional Jackets. A second shell is installed over a portion of the vessel, creating an annular space within which cooling or ...

7. Video on demand - Wikipedia

   en.wikipedia.org/wiki/Video_on_demand

   Video on demand (VOD) is a media distribution system that allows users to access videos, television shows and films digitally on request. These multimedia are accessed without a traditional video playback device and a typical static broadcasting schedule, which was popular under traditional broadcast programming, instead involving newer modes of content consumption that have risen as Internet ...

8. Argos (retailer) - Wikipedia

   en.wikipedia.org/wiki/Argos_(retailer)

   Argos was launched with thousands of staff, taking £1 million during a week in November. [10] Argos was purchased by BAT Industries in 1979 for £32 million. In 1980, Argos opened its Elizabeth Duke jewellery counter (named after a director's wife) and by 1982, was the United Kingdom's fourth-biggest jewellery retailer.

9. Testing and inspection of diving cylinders - Wikipedia

   en.wikipedia.org/wiki/Testing_and_inspection_of...

   If the inner surface is not clearly visible it should be cleaned by approved method which does not remove a significant amount of wall material. Methods allowed include shot-blasting, water jet cleaning, flailing, steam or hot water jet, rumbling and chemical cleaning. The cylinder must be internally inspected after cleaning. [22] [23]