Recirculation Pumps

Some articles on pumps, recirculation pumps, recirculation:

Boiling Water Reactors - Description of Major Components and Systems - Condensate and Feedwater
... The water then goes through either jet pumps or internal recirculation pumps that provide additional pumping power (hydraulic head) ... The heating from the core creates a thermal head that assists the recirculation pumps in recirculating the water inside of the RPV ... A BWR can be designed with no recirculation pumps and rely entirely on the thermal head to recirculate the water inside of the RPV ...
Water Heating - Tankless Heaters - Tankless Disadvantages
... Recirculation systems Since a tankless water heater is inactive when hot water is not being used, they are incompatible with passive (convection-based) hot water recirculation systems ... They may be incompatible with active hot water recirculation systems and certainly use more energy to constantly heat water within the piping, defeating one of a tankless water heater's primary advantages ... On-demand recirculating pumps are often used to minimize hot water wait times from tankless water heaters and save water being wasted down the drain ...

Famous quotes containing the word pumps:

    the rusty
    Pump pumps over your sweating face the clear
    Water, cold, so cold! you cup your hands
    And gulp from them the dailiness of life.
    Randall Jarrell (1914–1965)