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  2. Erosion corrosion of copper water tubes - Wikipedia

    en.wikipedia.org/wiki/Erosion_corrosion_of...

    The corrosion rate of copper in most drinkable waters is less than 2.5 μm/year, at this rate a 15 mm tube with a wall thickness of 0.7 mm would last for about 280 years. In some soft waters the general corrosion rate may increase to 12.5 μm/year, but even at this rate it would take over 50 years to perforate the same tube.

  3. Phereoeca uterella - Wikipedia

    en.wikipedia.org/wiki/Phereoeca_uterella

    Phereoeca uterella, known by the vernacular names plaster bagworm [a] and household casebearer [b], is a moth species in family Tineidae. [ 3 ] [ 1 ] It occurs in tropical climates, where it is common in houses, and is presumed native to the Neotropical realm . [ 4 ]

  4. First fix and second fix - Wikipedia

    en.wikipedia.org/wiki/First_fix_and_second_fix

    First fix comprises all the work needed to take a building from foundation to putting plaster on the internal walls. This includes constructing walls, floors and ceilings, and inserting cables for electrical supply and pipes for water supply. Some argue that First Fix starts after the shell of the building is complete, and ends when the walls ...

  5. Heat trap - Wikipedia

    en.wikipedia.org/wiki/Heat_trap

    Heat traps are valves or loops of pipe on the cold water inlet and hot water outlet of water heaters. The heat traps allow cold water to flow into the water heater tank, but prevent unwanted natural convection and heated water to flow out of the tank. [1] [2] Newer water heaters have built-in heat traps.

  6. Copper in heat exchangers - Wikipedia

    en.wikipedia.org/wiki/Copper_in_heat_exchangers

    Solar water heaters can be a cost-effective way to generate hot water for homes in many regions of the world. Copper heat exchangers are important in solar thermal heating and cooling systems because of copper's high thermal conductivity, resistance to atmospheric and water corrosion, sealing and joining by soldering, and mechanical strength.

  7. Home-stored product entomology - Wikipedia

    en.wikipedia.org/wiki/Home-stored_product_entomology

    Adult moths are small; generally, their length averages about 3 ⁄ 8 inch, with a 5 ⁄ 8-inch wing span. As adults, the moths are easily identified by an overall grayish, dirty complexion. However, the wing tips have a bronze color that helps differentiate this particular moth from other household moths.