Discussion in 'Education' started by mehdi 1992, Jan 12, 2013.

1. Joined: Dec 2012
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Location: iran

mehdi 1992Junior Member

Hi dear friends. Of Course me friend yourself.
I can not very well English, I translate.
In the following article, you will no longer have the ability to translate into Persian. If someone has not translated into at least use
I hope you understand what I mean
Anyone can translate to send e-mail
mehdi_enship@yahoo.com
enship0mehdi@gmail.com
Thank you

1.....

Ejector vs. Eductor (What's the "diff" anyway?)

Frequently, people will send us an inquiry for a "steam jet eductor vacuum system." This is a misnomer. Although the terms "ejector" and "eductor" are frequently interchanged, strictly speaking, they are not the same thing. What's the difference?

Both are "jet pumps" that operate in accordance with the well-known Bernoulli equation. A high pressure/low velocity motive fluid is converted into a lower pressure/higher velocity jet through a nozzle. Jetting past a suction connection in the head of the device will entrain a secondary low pressure fluid. In said head (nothing more than a pipe tee really), some of the kinetic energy of the motive fluid is transferred almost instantaneously to the suction fluid until the mixture achieves a uniform velocity at the low pressure.

The velocity of this mixture is then converted into an intermediate pressure (i.e. lower than the motive pressure, but higher than the suction pressure) in the throat or venturi of the device. The mixture's kinetic energy is converted back to pressure energy. This balance could also be done considering momentum transfer.

Where they start to differ is in the motive fluid:

An ejector uses a gas phase motive, usually steam or air.
An eductor uses a liquid phase motive, usually water.
Where else do they differ?

Motive nozzle: The motive nozzle in a gas jet ejector is almost always a "converging-diverging" nozzle. The gas velocity leaving the nozzle can be as high as Mach 2 (~2000 ft/sec). The motive nozzle for a liquid jet eductor is almost always just a "converging" nozzle. The liquid velocity leaving it seldom exceeds 20 ft/sec.
Suction head size: The head of a gas jet ejector can be (but not always is) a tee 1-2 pipe sizes larger than the suction connection size. The head of a liquid jet eductor is a tee 2-4 pipe sizes larger than the suction connection size. It almost always longer than a "standard" tee of that size.
Throat bore size: In a gas jet ejector, it is practice to limit the throat bore size to 0.5 - 0.55 X the discharge diameter. In a liquid jet eductor, this can be as much as 0.75 X the discharge diameter.
Throat velocity: In a gas jet ejector, this can approach Mach 1 (1000 ft/sec) depending on the compression ratio. This helps to explain why these units are loud. In a liquid jet eductor, it's usually 10 ft/sec or less. Liquid jet eductors are usually quiet.
Throat length: In a gas jet ejector, the overall throat length (end of suction head to outside face of discharge flange) is usually between 6.5 and 8.5 X the discharge diameter. (Multinozzle units may be a bit shorter.) In a liquid jet eductor, this number is usually between 4 and 5 X the discharge diameter.
Overall, though, if you see a unit such as this, it really is hard to determine what it is. Both look the same from the outside. You probably have to look at the motive line and/or the nameplate.

In terms of what Croll Reynolds manufactures:

Ejectors (Note: Most of our equipment falls into the "ejector" category.):

Single and multi-stage vacuum systems
Thermocompressors of all sorts
"BL" series NCG scavenging ejectors and turbine gland ejectors (small pressure differential operating near atmospheric pressure)
Siphon ejectors (steam motive pumping water)
Atmospheric air ejectors (used to extend the range of liquid ring vacuum pumps)
Gas jet compressors
Sulfur pit ejectors
The last two are used primarily by the petrochemical industry, where the word "eductor" is engrained. Try as we might, there probably is no changing this.

Eductors:

AQUA-DUCTORs (liquid motive with liquid suction, sometimes used for solids transfer)
AQUA-VACTORs (liquid motive handling air producing vacuum)
Circulators (in-tank mixing eductors)\
Jet venturi scrubbers
It is possible to combine both devices in vacuum service. Although seldom done today, there are instances where a water jet eductor has served as the final pumping stage and direct contact condenser for one or two high vacuum steam ejectors. Water jet eductors, rather than the customary liquid ring vacuum pump, have also been used to back an atmospheric air ejector,

Some things we produce are neither "fish nor fowl." For example a "jet heater" is not a jet at all but simply a steam/water mixer without the pressure recovery that is characteristic of a jet pump. Other examples would be some of our desuperheaters and high-energy venturi scrubbers.

In conclusion, there's no need to fret over the differences. If you say "eductor" and mean "ejector" or vice-versa, we'll still know what you're looking for; we just wanted to set the record straight. Little-known fact: "Eductor" was once a trademarked name which has come into generic use, much like the word "Band Aid."

2......

The new

EDUCTOR

The Eductor has greatly improved Electro-Stimulation Capacities. It has 3 much more technologically advanced Signal Generators to the one old fashioned signal generators of the SCIO and or Indigo. This 3 stimulation system allows a full 3 Dimensional Scalar Field for 1000% increased stimulation versatility greatly enhanced Chakra Work, Improved Pain management, Improved Anxiety, Addiction Therapy and Improved Electro Trauma Healing. We can build reduced small frequency interference inside the body. This will allow much greater precision, range and effectiveness of MTENS, MCES, EWH, TVEP, ETM and Scalar wave function. Amplitude of generators can be set separately for all.

The scientific digital quantum xrroid consciousness interface behind the SCIO has been improved in the Eductor. The Eductor has new modern Hi-Tech for today’s biofeedback technician. The major improvements to the Eductor include a dedicated ECG, EEG, GSR, EMG with improved disturbance filtering. The sensitivity is 20 times more sensitive than the SCIO. It is 2012 biofeedback chip technology.

There is new active independent shielding and new heat stabilized voltage reference on each channel of the electrodes.The Eductor has new Peak rectifier for the measurement of the peak values of the AC components and Precise 22 Bit Sigma-Delta AD converter for the high resolution DC measurement for greatly improved measurement function. There is greatly improved aberrant artifact reduction.

A new DC source can change the source impedance in a wide range for improved GSR measurement. Dedicated independent EEG EMG amplifier with a built in 50-60Hz noise and Butterwort filter and new built in wave source with programmable amplitude and frequency for improved verification of the EEG, EMG channels.

The portable Eductor has a new 330*240 LCD screen on the front can show text, diagrams, or pictures. The Desktop Eductor has a full large video touch screen for movie and biofeedback display, with a Resolution of 640/480 and an external size of 11,8/89 mm. If you wish to trade in to the Desktop Eductor, the trade in prices would be increased by 1,000 EUR. The Desktop Eductor will be available at the end of 2012.

Added is a multitude of programmed waveform. In summary using today’s chip technology and the quantum xrroid technology we believe this is a much improved medical device to help with educating the body electric to increase wellness.

The New Electro-Transcendental Meditation (ETM) Function is greatly improved with the EDUCTOR. This can stimulate the mind into deep states of relaxation and meditative Bliss. This also includes: Deep relaxation, balance, aids in releasing emotions, increased senses, colors more enhanced, brain wave conflict reduction, perception improved, brain function improved with the consciousness open. It is like tuning a badly tuned guitar to a harmonious tranquility, by reducing dissonance!

Progress, Evolution, Technology today the EDUCTOR

The word SCIO means in Latin “to Know” and this is where the word science comes from, but we cannot truly Know. The word Doctor comes from the Latin word ‘Eductor’ which means ‘to teach’. Biofeedback means teaching rather than knowing. Our device teaches, not diagnoses.

The new ‘Eductor’ is a vast improvement, fully registered device with professional EEG, EMG, ECG chips inside, four wave signal generators for 3D visual graphic representations, Wi-Fi connection, micro-micro operations, LCD screen, Cranial Electrical Stimulation harnesses and much more. It is the next super generation in our technology.

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