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volumetric efficiency
(redirected from volumetric efficiencies)

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volumetric efficiency [¦väl·yə¦me·trik i′fish·ən·sē]
(mechanical engineering)
In describing an engine or gas compressor, the ratio of volume of working substance actually admitted, measured at a specified temperature and pressure, to the full piston displacement volume; for a liquid-fuel engine, such as a diesel engine, volumetric efficiency is the ratio of the volume of air drawn into a cylinder to the piston displacement.
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A high pressure ratio implies high discharge and oil temperatures and low volumetric efficiencies and, hence, low COP values.
Cascade systems: past, present, and future by Bansal, Pradeep K.; Jain, Sanjeev / ASHRAE Transactions
The materials used are 94% recyclable, the packs are supplied flat and when fully erected still offer major volumetric efficiencies over polystyrene as well as providing superior structural integrity and image potential.
Silver King, the green alternative by Food Trade Review
Widespread use of data compression and compaction will emerge to further improve volumetric efficiencies.
Disk Subsystem Functionality Roadmap by Moore, Fred / Computer Technology Review
 
 
 
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