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  2. Trace heating - Wikipedia

    en.wikipedia.org/wiki/Trace_heating

    Electric heat tracing, heat tape or surface heating, is a system used to maintain or raise the temperature of pipes and vessels using heat tracing cables. Trace heating takes the form of an electrical heating element run in physical contact along the length of a pipe.

  3. Three utilities problem - Wikipedia

    en.wikipedia.org/wiki/Three_utilities_problem

    The lines connecting the remaining houses with the utilities divide the plane into three regions. Whichever region the deleted house is placed into, the similarly shaded utility is outside the region. By the Jordan curve theorem, a line connecting them must intersect one of the existing lines.

  4. Cross-linked polyethylene - Wikipedia

    en.wikipedia.org/wiki/Cross-linked_polyethylene

    A cross-linked polyethylene (PEX) pipe. Cross-linked polyethylene, commonly abbreviated PEX, XPE or XLPE, is a form of polyethylene with cross-links.It is used predominantly in building services pipework systems, hydronic radiant heating and cooling systems, domestic water piping, insulation for high tension (high voltage) electrical cables, and baby play mats.

  5. Hydronics - Wikipedia

    en.wikipedia.org/wiki/Hydronics

    The two-pipe reverse return configuration which is sometimes called 'the three-pipe system' is different from the two-pipe system in the way that water returns to the boiler. In a two-pipe system, once the water has left the first radiator, it returns to the boiler to be reheated, and so with the second and third etc. With the two-pipe reverse ...

  6. Should I turn off water if pipes are frozen? How to keep ...

    www.aol.com/turn-off-water-pipes-frozen...

    Running water through the pipe will help melt ice in the pipe. Apply heat to the section of pipe using an electric heating pad wrapped around the pipe, an electric hair dryer, a portable space ...

  7. Heat-transfer fluid - Wikipedia

    en.wikipedia.org/wiki/Heat-transfer_fluid

    Heat Capacity: A fluid’s heat capacity indicates how much thermal energy it can transport and store, impacting the efficiency of the heat transfer process. [ 2 ] Thermal Conductivity and Thermal Diffusivity : These properties influence the rate at which heat is transferred through the fluid, affecting how quickly a system can respond to ...

  8. Studies of toxin in drinking water pipes offer encouraging ...

    www.aol.com/studies-toxin-drinking-water-pipes...

    Service lines are pipes that run from main water lines to people’s homes. Most of the lines checked so far have been made of galvanized steel or plastic, according to the city.

  9. Hydraulic analogy - Wikipedia

    en.wikipedia.org/wiki/Hydraulic_analogy

    DC is equivalent to a constant flow of water in a circuit of pipes. Low frequency AC is equivalent to water oscillating back and forth in a pipe Higher-frequency AC and transmission lines is somewhat equivalent to sound being transmitted through the water pipes, though this does not properly mirror the cyclical reversal of alternating electric ...