Jet Pump Ejector Design

Ejectors operate by using gaseous fluids such as steam or air as the high pressure motive fluid to create vacuums as well as to pump compress and boost secondary low pressure gases. The high velocity primary stream is produced by expanding a high.

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December 2008 chaqing liao bs zhejiang university.

Jet pump ejector design. When the speed of a fluid increases its pressure decreases and vice versa. Since an ejector has no valves rotors pistons or other moving parts it is a relatively low cost component is easy to operate and requires relatively little maintenance. Note that the term jet pump is used to refer to a liquidliquid ejector.

It has no moving parts. A transvac ejector venturi eductor jet pump operation is based upon bernoullis principle which states. Gas ejector modeling for design and analysis.

Selection of air ejectors part i. Ejector working principlean ejector is a device used to suck the gas or vapour from the desired vessel. Best a generalized ejector model was successfully developed for gas ejector design and performance analysis.

Very simply an ejector is a pumping device. The ejector design principles used in the ejector calculations for the program are explained including the ejector energy balance and effects of the ejector flow cones. Ejectorsan ejector is a type of vacuum pump or compressor.

Jet pump ejector motive media pump injector many names same design and working principle. Basic design operating information and operation limitations of air ejectors. Korting jet pumps and ejectors enjoy a reputation of being particularly straightforward and robust in their functioning as well as being.

Instead it uses a fluid or gas as a motive force. Me texas am university chair of advisory committee. How an ejector works is again based on the venturi principle and is relatively straight forward as follows.

A jet pump works without a mechanical drive and therefore offers high reliability in continuous operation mode. 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. An ejector is similar to an of vacuum pump or compressor.

Blatchley schutte koerting an ejector is a pump which uses the jet action of one fluid to entrain and compress another fluid. Previous 1 d analytical models can be derived from this new. Ejector design software to do conceptual design and generate ejector sizes.

The major difference between the ejector and the vacuum pump or compressor is it had no moving parts. The most comprehensive source of design information for ejectors can be found in a series of engineering sciences data unit esdu data items nos. In a steam jet ejector the suction chamber is connected to the vessel or pipeline that is to be evacuated under.