What is diffuser in ejector?
The venturi shape towards the discharge end is the diffuser, which slows the mixture down and thereby increases its pressure. This enables the ejector to discharge at a pressure that is greater than that of the low suction branch.
What is the function of the ejector?
The purpose of the ejector is to transport and compress a weight of induced fluid from the suction pressure to the exit pressure. By staging ejectors it is possible to obtain a very large range of suction pressures from atmospheric down to as low as one micron of mercury absolute.
What is an ejector nozzle?
In design, the ejector nozzle features a convergent primary nozzle which is enclosed concentrically within a tube. The hot exhaust flow from the engine attains sonic velocity at the nozzle exit (M1=1), the highest Mach number possible with a convergent nozzle.
What is motive fluid?
A high-pressure fluid used to produce flow of another fluid, as in an ejector. …
What is the difference between extractors and ejectors?
Ejector guns have two pieces, one for each barrel where extractor only guns have a solid piece of metal. Ejector guns are unique in that if only one shell is fired, upon opening the gun, only that ejector will fire.
Which steam is used in ejector?
The steam or air converts that pressure or potential energy to velocity or kinetic energy. The jet of high-velocity steam or gas entrains the gas to be evacuated or pumped in the suction of the ejector.
How vacuum is created in steam ejector?
In the steam ejector system, the steam (auxiliary steam) is passed through a nozzle and allowed to expand in one chamber. When the HP steam passes through a nozzle it expands in the chamber and creates vacuum in the chamber; this chamber is connected to the condenser so that the condenser vacuum is created.
Which steam is used in motive fluid?
Boiler steam
Boiler steam is used as a motive fluid in steam jet ejector vacuum systems (Šarevski et al., 1999), and also in steam jet ejector refrigeration systems (Cerepnalkovski (1991), Eames et al. (1995), etc.), in the thermo compression heat pump systems (Šarevski, 2011a, 2012g), etc.