Ejector design calculation software how to#
Ejector design calculation software software#

Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora. Steam is a very good motive fluid, so you'll be able to bump all of the ratios a bit in a good direction. This tool does hydraulic calculation for a pump and estimates differential head, hydraulic power, motor power, NPSH available. This should be taken into consideration in most pressure drop and flow calculations within a given. How to Size Liquid Motive Eductors for Pumping Liquids.

Ejector design calculation software software#

None of these 'rules of 2' are exact, but before you waste a bunch of time chasing a marginal project it is worthwhile to apply them to see if you're in the ballpark. The intelligent technology in our Electrical Calculation Software powerfully calculates & performs your Electrical. Or do you need an ejector design done for you We can size and specify ejectors for a wide range of applications. Your steam demand (in mass flow rate terms) will be about twice your suction requirements (i.e., if you need to move 2,000 lbm/hr of suction gas you'll have to supply 4,000 lbm/hr of steam). For practical purposes, you'll want to look at about 2 compression ratios (i.e., for the 20 psia exhaust you'll only be able to pull the suction down to about 10 psia). if you're exhausting into 20 psia, you'll need something over 40 psia steam).

For scoping evaluation, you'll need something like twice the steam pressure as your exhaust pressure (i.e. It sounds like you're in the market for an 'ejector'. If you are trying to compress a gas then you don't want to use an eductor (the effeciencies are too low, I've done it but it requires a lot of power fluid). The reason for the lecture is that if you a trying to pump liquid you don't want to use and ejector (velocities get pretty high). Steam can be used as the motive fluid in either case. Ejectors, are devices for the conveyance, compression or mixing of gases, vapors, liquids or solids in which a gaseous or liquid medium serves as the motive. The throat has a very short entry transition and a straight section followed by a divergent section.ДЄn ejector is intended to move high gas-cut fluids and has a convergent section for an entry to the straight throat which is again followed by a divergent section. By using Henry and Fauske model (Henry and Fauske, 1971) we will determine the motive nozzle throat diameter is designed. Objective of the ejector design is to determine all diameters and length of these sections this ejector. They're all in the same family, but they're each a different beast.ДЄn eductor is a device intended to move high liquid-cut fluids. 3.6 Ejector Design two phase flow ejector motive nozzle, suction nozzle and diffuser are the main parts. RE: Eductor calculations codeeng (Petroleum) 17 May 05 10:34Д®ductors, Ejectors, Jet Pumps, hose-end sprayers, and sand blasters are all in the family of equipment called 'thermocompresors'. The two then exit the eductor at an intermediate pressure.ДЄlso, any good sites that thoroughly explain steam usage in refineries? I am looking for something that starts with the basics of steam. This in turn sucks the stack gas into the eductor. The pressure of the motive stream is dropped, to increase its velocity. This flow will serve as a 'fast loop' that every so often an analyzer will pull a 'slip stream' from to test.ДЄny suggestions as to how to formulate a relation of motive stream to outlet pressure? The eductor used for gases is basically a converging/diverging nozzle from what I understand. The outlet of the eductor will have a stack gas/steam mixture that will then be returned to the stack. We are passing the steam at some pressure (this is what is to be determined) through the eductor to induce the flow of a stack gas, which is at or near atmospheric pressure (may actually be a slight vacuum). Basic ejector components are the steam chest, nozzle, suction, throat, diffuser and they discharge (Fig. Very often, the motive fluid is steam and the device is called a steam jet ejector. Instead, it uses a fluid or gas as a motive force. The question is what pressure can we regulate this steam to in order to still maintain the flow. Very simply, an ejector is a pumping device. We have up to a 150# steam supply as the motive stream. !function(o),lt.prototype.I am a new engineer and am looking for pointers on calculating the flowrate needed to move a gas.