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2. Circulator pump - Wikipedia

   en.wikipedia.org/wiki/Circulator_pump

   Circulator pump. A circulator pump or circulating pump is a specific type of pump used to circulate gases, liquids, or slurries in a closed circuit with small elevation changes. They are commonly found circulating water in a hydronic heating or cooling system. They are specialized in providing a large flow rate rather than providing much head ...

3. Forced circulation boiler - Wikipedia

   en.wikipedia.org/wiki/Forced_circulation_boiler

   Forced circulation boiler. A forced circulation boiler is a boiler where a pump is used to circulate water inside the boiler. This differs from a natural circulation boiler which relies on current density to circulate water inside the boiler. In some forced circulation boilers, the water is circulated at twenty times the rate of evaporation.

4. Unplug These Appliances That Hike Up Your Electricity Bill - AOL

   www.aol.com/finance/unplug-appliances-hike...

   Hot Water Recirculation Pump. Average Wattage: 28-92 watts. Cost per Year: $28-$93. Plug your hot water recirculation pump into a timer and program it to switch the pump off at times when no one ...

5. Tankless water heating - Wikipedia

   en.wikipedia.org/wiki/Tankless_water_heating

   On-demand recirculating pumps are activated by push-button or other sensor. A water contacting temperature probe installed at the hot water usage point signals the pump to stop. Single-cycle pumping events only occur when hot water is needed, thereby preventing the energy waste associated with constantly heating water within piping.

6. Boiling water reactor - Wikipedia

   en.wikipedia.org/wiki/Boiling_water_reactor

   Another example was the Isolation Condenser system, which relied on the principle of hot water/steam rising to bring hot coolant into large heat exchangers located above the reactor in very deep tanks of water, thus accomplishing residual heat removal. Yet another example was the omission of recirculation pumps within the core; these pumps were ...

7. Thermosiphon - Wikipedia

   en.wikipedia.org/wiki/Thermosiphon

   Thermosiphon. Thermosiphon (or thermosyphon) is a method of passive heat exchange, based on natural convection, which circulates a fluid without the necessity of a mechanical pump. Thermosiphoning is used for circulation of liquids and volatile gases in heating and cooling applications such as heat pumps, water heaters, boilers and furnaces ...