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2. Tankless water heating - Wikipedia

   en.wikipedia.org/wiki/Tankless_water_heating

   Gas water heaters have an exhaust vent or one to two exhaust pipes on the top, and still require electric power for electronics, sensing and ignition. A three-phase, 21 kW, 400-volt tankless water heater in Europe, with new European color coding for three-phase power. There are also heaters that use several single-phase circuits instead.

3. Storage water heater - Wikipedia

   en.wikipedia.org/wiki/Storage_water_heater

   Storage water heater. A storage water heater, or a hot water system ( HWS ), is a domestic water heating appliance that uses a hot water storage tank to maximize water heating capacity and provide instantaneous delivery of hot water. [1] Conventional storage water heaters use a variety of fuels, including natural gas, propane, fuel oil, and ...

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 convection and heated water to flow out of the tank. [ 1][ 2] Newer water heaters have built-in heat traps.

5. This protocol can save overheating patients. Few states ...

   www.aol.com/protocol-save-overheating-patients...

   Ice and water are poured in, and the bag is zipped, with one arm hanging out so Willens can monitor the patient's blood pressure. This impromptu ice bath allows the patient to cool down rapidly ...

6. Liberal groups are finding Kamala Harris polls well with some ...

   www.aol.com/news/liberal-groups-finding-kamala...

   Way to Win found that Biden and Harris polled similarly among Democrats and independents and had more work to do among independent voters. But, it found, Harris had a “significant boost” from ...

7. Melissa Etheridge connects with incarcerated women in new ...

   www.aol.com/entertainment/melissa-etheridge...

   Melissa Etheridge realized two career dreams with her new docuseries “Melissa Etheridge: I’m Not Broken”: performing for incarcerated women and recording the concert for a live album. The ...