What is the function of steam jet air ejector?

What is the function of steam jet air ejector?

the Steam jet ejector are used for air removal on surface condensers. They are simple in operation and rugged in construction, can use a wide range of steam pressures, and will handle wet or dry mixtures of air, gases, or vapors at a near-perfect vacuum.

How does steam ejector work?

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.

What are the primary parts of an ejector?

Recommended Spare Parts: Cast-iron ejectors have four basic parts: steam chest, nozzle, suction head and diffuser. in a fabricated-steel ejector these parts are combined into three: nozzle, mixing chamber and venturi throat.

What is ejector assembly?

The ejector assembly incorporates a spring loaded, normally closed diaphragm check valve and is designed to prevent any water from entering the vacuum line. 4) Once it has been confirmed that the ejector is working properly, the ejector is ready for use. Attach the vacuum tubing to the rest of the gas feed system.

What is the purpose of 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 a steam jet?

Steam jet ejectors are mass flow machines that are ideally suited for extracting and compressing noncondensable gas from a condenser operating at high vacuum. Compared with other mechanical compressors, steam jet ejectors offer the benefits of no moving parts and low cost.

What is the function of ejector?

What is motive fluid in ejector?

Very often, the motive fluid is steam and the device is called a “steam jet ejector.” Basic ejector components are the steam chest, nozzle, suction, throat, diffuser and they discharge (Fig. 1). The two major functions of ejectors are as follows: Thermocompressors.

What are the three types of ejector grid?

There are following three types of ejector grid:

  • In-Line Ejector Grid.
  • Frame type Ejector Grid.
  • Circular support block grid. a) In-Line Ejector Grid:

How does an ejector pump work?

When wastewater goes into the holding tank, there is a float device that activates the pump. Once this device is activated, the wastewater will go into the sewer line or septic tank. As the level of wastewater drops, the float will lower. Once this float is lowered down, the sewage ejector pump turns off.