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  2. Water heating - Wikipedia

    en.wikipedia.org/wiki/Water_heating

    Heat from the space-heating boiler is transferred to the water heater vessel/container by means of a heat exchanger, and the boiler operates at a higher temperature than the potable hot water supply. Most potable water heaters in North America are completely separate from the space heating units, due to the popularity of HVAC / forced air ...

  3. Put down that hose: High heat increases the need for water ...

    www.aol.com/put-down-hose-high-heat-174201285.html

    . Don't turn on the hose. Use water in a bucket to wash cars and pets, and to rinse sandy/grassy feet. Use a broom instead of a hose or pressure washer for clearing debris from sidewalks or pavement

  4. 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.

  5. Water heat recycling - Wikipedia

    en.wikipedia.org/wiki/Water_heat_recycling

    Installation of a double-walled copper-on-copper heat exchanger in a vertical section of the master drain line in a Canadian home (2007) Water heat recycling (also known as drain water heat recovery, waste water heat recovery, greywater heat recovery, [citation needed] or sometimes shower water heat recovery [citation needed]) is the use of a heat exchanger to recover energy and reuse heat ...

  6. Brown snow fell in a Maine town. Here's what officials say ...

    www.aol.com/brown-snow-fell-maine-town-234035621...

    Snowfall is nothing new in Maine, but usually it's white. The east Maine town of Rumford experienced a rare weather event Tuesday in the form of brown snow, town officials confirmed on Facebook.

  7. Water softening - Wikipedia

    en.wikipedia.org/wiki/Water_softening

    Water softening is the removal of calcium, magnesium, and certain other metal cations in hard water. The resulting soft water requires less soap for the same cleaning effort, as soap is not wasted bonding with calcium ions. Soft water also extends the lifetime of plumbing by reducing or eliminating scale build-up in pipes

  8. College Football Playoff first round showed system is broken ...

    www.aol.com/college-football-playoff-already...

    It's already broken and bombing. That doesn't mean the College Football Playoff can't be fixed with the right plan. It's actually pretty simple.

  9. Superhydrophobic coating - Wikipedia

    en.wikipedia.org/wiki/Superhydrophobic_coating

    Durable water repellent is a type of fabric coating to protect them from water. In addition, superhydrophobic coatings have potential uses in vehicle windshields to prevent rain droplets from clinging to the glass, to improve driving visibility. Rain repellent sprays are commercially available for car windshields. [14] [15]