What is an ejector
Gap-fill exercise
Complete the following text. Click "Correction" when you are done.
Sketch of an ejector
An ejector is a device which receives
accelerated in a convergent-divergent
compression of the secondary fluid
converts the residual velocity into an increase in pressure
drawing the secondary fluid
expense of a decrease in the enthalpy of the primary fluid
primary or motive fluid
secondary or aspirated fluid
two generally gaseous fluids
as input, but which can also be liquid or two-phase:
- high pressure fluid, called the
accelerated in a convergent-divergent
compression of the secondary fluid
converts the residual velocity into an increase in pressure
drawing the secondary fluid
expense of a decrease in the enthalpy of the primary fluid
primary or motive fluid
secondary or aspirated fluid
two generally gaseous fluids
- low pressure fluid, called
accelerated in a convergent-divergent
compression of the secondary fluid
converts the residual velocity into an increase in pressure
drawing the secondary fluid
expense of a decrease in the enthalpy of the primary fluid
primary or motive fluid
secondary or aspirated fluid
two generally gaseous fluids
.
The working fluid is
accelerated in a convergent-divergent
compression of the secondary fluid
converts the residual velocity into an increase in pressure
drawing the secondary fluid
expense of a decrease in the enthalpy of the primary fluid
primary or motive fluid
secondary or aspirated fluid
two generally gaseous fluids
, creating a pressure drop in the mixing zone, which has the effect of
accelerated in a convergent-divergent
compression of the secondary fluid
converts the residual velocity into an increase in pressure
drawing the secondary fluid
expense of a decrease in the enthalpy of the primary fluid
primary or motive fluid
secondary or aspirated fluid
two generally gaseous fluids
. The two fluids are then mixed and a shock wave can take place at the neck.
This results in an increase in the pressure of the mixture and a drop in its speed, which becomes subsonic. The diffuser
accelerated in a convergent-divergent
compression of the secondary fluid
converts the residual velocity into an increase in pressure
drawing the secondary fluid
expense of a decrease in the enthalpy of the primary fluid
primary or motive fluid
secondary or aspirated fluid
two generally gaseous fluids
.
The ejector thus performs
accelerated in a convergent-divergent
compression of the secondary fluid
converts the residual velocity into an increase in pressure
drawing the secondary fluid
expense of a decrease in the enthalpy of the primary fluid
primary or motive fluid
secondary or aspirated fluid
two generally gaseous fluids
at the
accelerated in a convergent-divergent
compression of the secondary fluid
converts the residual velocity into an increase in pressure
drawing the secondary fluid
expense of a decrease in the enthalpy of the primary fluid
primary or motive fluid
secondary or aspirated fluid
two generally gaseous fluids
.
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