Ejector Working Principle

Ejector Working Principle

What is Ejector?

An ejector may be a device wont to suck the gas or vapor from the required vessel or system. Associate in Nursing ejector {is similar|is Associate in Nursingalogous|is comparable} to an of the pump or mechanical device. the main distinction between the ejector and also the pump or mechanical device is it had no moving components. therefore it’s comparatively cheap and straightforward to control and maintenance-free instrumentality.

Principle of Ejector

The operative principle of the ejector is that the pressure energy within the motive fluid is regenerate to rate energy by Associate in Nursing adiabatic enlargement within the Converging/Diverging Nozzle. because of the pressure drop of the motive fluid, it’ll produce a nonaggressive zone before the blending chamber. because of the nonaggressive zone, the suction fluid can begin to maneuver toward it and blend with motive fluid within the combining chamber. In mixed fluid enter the oblique portion of the ejector wherever its rate energy is regenerate into Pressure energy.

Working of Ejector

The suction line of the ejector is connected to the vessel that is to the unbroken below depression. With relevancy the below figure, a high motivating fluid enters at “A” and expands through the converging-diverging nozzle to “B“. The motive fluid can produce a vacuum within the combining chamber refer to the pressure curve wherever the pressure is faded and the rate is increased. because of this suction fluid “C” (air or gas) from the connected vessel is moved toward the blending chamber “D“. once the suction fluid starts to combine with the motive fluid within the combining chamber. the rate of the fluid at the blending chamber is close to 600 to 900 meters per second.

Then the mixture travels through the diffuser “E“, its rate energy is regenerate into pressure energy. Thereby the mixture gained higher pressure send to the atmosphere or some closed system. unremarkably the discharge pressure is ten to fifteen times of the suction pressure.

Capacity of Ejectors

The capability of Associate in Nursing ejector is set by its dimensions. By the specified capability is incredibly high then 2 or 3 ejectors square measure operating in parallel. if larger compression is needed, 2 or a lot of ejectors are organized serial.

Ejector Installation

Ejectors are also put in at any orientation. However, it’s vital to supply a provision to get rid of the atmospheric phenomenon or solid particles from the entrained gases of the ejector. Since any condensed or solid particles could cut back the turnout capability of the ejectors.

Hence it vital to supply a drain valve put in at low points will be either manual or automatic float operated valves.

Another necessary factor to ascertain throughout ejector installation is external loads(Piping load) act on the ejectors. Since any arrangement can adversely have an effect on the performance of ejector.

Benefits of Ejector

• Ejectors will be operated with many various motive fluids: steam, air, organic vapor, and alternative gases.

• No moving components, no lubrication, no vibration. therefore low maintenance value once to check with alternative peer instrumentality.

• Ejectors will be put inside or outdoors while not restriction.

• It can be put in at any orientation. therefore area demand is terribly low.

• The initial value is incredibly less and no spares needed.

• Easy to handle corrosive and slugging liquids.