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2. Hydraulic pump - Wikipedia

   en.wikipedia.org/wiki/Hydraulic_pump

   The swept volume or displacement of gear pumps for hydraulics will be between about 1 to 200 milliliters. They have the lowest volumetric efficiency ( η v ≈ 90 % {\displaystyle \eta _{v}\approx 90\%} ) of all three basic pump types (gear, vane and piston pumps) [ 1 ] These pumps create pressure through the meshing of the gear teeth, which ...

3. Ground source heat pump - Wikipedia

   en.wikipedia.org/wiki/Ground_source_heat_pump

   These heat pumps are also preferred for pool heating. Heat pumps typically only heat water to about 55 °C (131 °F) efficiently, whereas boilers typically operate at 65–95 °C (149–203 °F) [citation needed]. The size of radiators designed for the higher temperatures achieved by boilers may be too small for use with heat pumps, requiring ...

4. Pump - Wikipedia

   en.wikipedia.org/wiki/Pump

   A small, electrically powered pump A large, electrically driven pump for waterworks near the Hengsteysee, Germany. A pump is a device that moves fluids (liquids or gases), or sometimes slurries, [1] by mechanical action, typically converted from electrical energy into hydraulic or pneumatic energy.

5. Circulator pump - Wikipedia

   en.wikipedia.org/wiki/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.

6. Your winter illness guide: Why norovirus and RSV are on the ...

   www.aol.com/lifestyle/winter-illness-guide-why...

   Here's what you can expect this season from common winter viruses.

7. Rex Heuermann, alleged Long Island serial killer, charged ...

   www.aol.com/alleged-long-island-serial-killer...

   Heuermann's attorney says his client is looking forward to his day in court and will be pursuing a change of venue, claiming the jury pool in Suffolk has been "poisoned." The defense attorney ...