Ejektor princip

What is the difference between an ejector and a vacuum pump? How does an ejector work in a power plant? Due to the pressure drop of the motive flui it will create a low-pressure zone before the mixing chamber.

A Transvac Ejector (venturi, eductor, jet pump) operation is based upon Bernoulli’s Principle which states: ‘When the speed of a fluid increases its pressure decreases and vice versa’. Depending on the application, an injector can also take the form of an eductor-jet pump, a water eductor or an aspirator.

An ejector operates on similar principles to create a vacuum feed connection for braking systems etc. The main function of the ejector is to extract air and no condensate gasses from a closed system. It removes air from the condenser and provide vacuum. The amount of air extracted at the time of starting is more as compared to running unit.

There are a variety of ejectors designed in service which work on the same principle. Older unit have heavy cast steel which serves as a vapour condenser and also contains diffusers. These are arranged vertically the steam entering at the top.

The term jet ejector describes a device in which a pumping effect is achieved using a motive fluid. A jet ejector requires no mechanical drive and has no moving parts. This basic principle applies to every jet ejector in different models and ranges of application. The application determines the design of the flow section. Vodní ejektor je složen z vtokového hrdla s hnací tryskou, sacího koše a difuzoru.

Do vtokového hrdla přiváděná voda vytváří podtlak, kterým je přisávána voda přes sací koš. Množství čerpané vody je závislé na manometrické výšce a na hnacím tlaku vody. With high and low pressure flow loops, along with multi-phase and sand slurrry capabilities, we can guarantee the performance of your Ejectors.

Online Ejector Sizing Tools. The very latest Ejector designs are now available at the click of a. Ejektor je zařízení, jehož úkolem je doprava tekutin potrubím. Vzhledem se podobá potrubní armatuře a má analogickou funkci s čerpadlem.

Zdrojem hnací energie je primární (pracovní) tekutina. Z toho důvodu se mu také říká „proudové čerpadlo“. Ejektory jsou rozděleny podle druhu a skupenství hnací a hnané tekutiny.

Injektor nebo též napaječ je speciální druh parního čerpadla, založený na využití Bernoulliho jevu. Používá se na doplňování vody do parního kotle. Vynalezl jej Henri Giffard.

Steam Ejector Fundamentals: An Alternative to Vacuum Pumps (Video) Steam jet ejectors offer a simple, reliable, low-cost way to produce vacuum. They are especially effective in the chemical industry where an on-site supply of the high-pressure motive gas is available. Functional principle The result of this action is a mixture of the driving and entrained (sucked) fluids, the velocity of which is reduced and the pressure increased in a second nozzle. This disambiguation page lists articles associated with the title Ejector. If an internal link led you here, you may wish to change the link to point directly to the intended article.

Understanding ejector systems necessary to troubleshoot vacuum distillation James R. A complete understanding of ejector system performance characteristics can reduce the time and expense associated with troubleshooting poor crude vacuum distillation unit (CVDU) performance. EZEJECTOR is a computer model for gas ejector and steam ejector design that has been developed based on a unique approach using fundamental principles. The ejector computer model includes the following: Thermodynamic models, Continuity equations. Equations for geometric arrangement. Efficiencies of each step within the ejector based on.

A venturi creates a constriction within a pipe (classically an hourglass shape) that varies the flow characteristics of a fluid (either liquid or gas) travelling through the tube. As the fluid velocity in the throat is increased there is a consequential drop in pressure. Injektor (prema lat. iniectus, particip prošli od inicere: ubaciti), u strojarstvu, je uređaj za napajanje parnih kotlova napojnom vodom.

Djeluje na istome načelu kao i ejektor , slične je konstrukcije i nema pokretnih dijelova. Princip rada ejektora: Svi tipovi ejektora, bez obzira na namenu i veličinu, rade po istom principu. Za pogon koriste energiju ulaznih fluida.

Fluid sa višim ulaznim pritiskom naziva se pogonski, a fluid sa nižim ulaznim pritiskom naziva se usisavani. Istovremeno se može usisavati više različitih fluida. Fyzikální princip proudového čerpadla vychází z kombinace trysky a difuzoru (venturiho trubice), jako transformátorů tlaku na kinetickou energii (tryska) a zpět (difuzor).

Při transformaci vždy snížením hodnoty jedné veličiny roste veličina druhá (např. u trysky se snižuje tlak kapaliny při zvýšení její rychlosti tečení).