what is the woking principal of steam jet ejector? limitation of steam jet ejetor?
http://wiki.answers.com/Q/What_is_the_working_principle...
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We have a "Z" and "Y" stage steam jet air ejector on our 160 MW Unit. The design steam conditions for the SJAE are 265 psi @ 900 degf. At low loads we have been losing vacuum to the point of putting on the "hogger" and almost tripping the unit.
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www.eng-tips.com/viewthread.cfm?qid=145982&page=4
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STEAM JET AIR EJECTORS (SJAE); GENERAL: The attached figures illustrate the two types of Steam Jet Air Ejector (SJAE) systems used in the industry to remove non-condensables and water vapor from main condensers.
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www.croll.com/_website/pr/powerhome.asp
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En Espanol | En Portugues | En Francais | Auf Deutsch | In Chinese; Croll Reynolds | Search | About Croll Reynolds| Applications | Products | Library | Worldwide Reps; Thermocompressors | Vacuum Systems | Air Powered Ejector | Ejectors | Steam Jet Ejector | Air Ejectors; High Vacuum Pumps | Steam Ejector...
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www.croll.com/_website/pr/jacketedejectors.asp
www.croll.com/_website/pr/jacketedejectors.asp
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Air ejectors are essentially jet pumps or eductors, as illustrated in Figure 10 below. ... Single-stage, rotary-vane units are used for vacuums to 28 inches Hg. Two stage units can draw vacuums to 29.7 inches Hg. The vacuum pump has an advantage over the air ejector in that it requires no source of steam for its operation.
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www.engineersedge.com/heat_exchanger/large_steam_conden...
www.engineersedge.com/heat_exchanger/large_steam_condenser.htm
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They entrain air or other fluids in a high velocity jet of propelling air, steam, water or other fluid. And they use the kinetic energy in the high velocity stream of that fluid to push back the atmosphere from the discharge of the ejector.
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www.graham-mfg.com/usr/pdf/TechLibVacuum/218.PDF
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Fox Valve makes: steam ejectors, air jet ejectors, vacuum systems, and thermocompressors. Single and multi-stage systems, line sizes 1/4"-42". ... Fox Steam Jet Ejectors and Vacuum Systems ... Fox venturi ejector products range from small, machined-from-bar ejectors...
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www.foxvalve.com/frameset-steam.html
www.foxvalve.com/frameset-steam.html
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Fox Valve manufactures a complete range of venturi products for industry, including steam and air jet ejectors, solids conveying eductors, vacuum systems, liquid eductors, aspirators, venturi flowmeters, and sonic chokes. ... eductor, eductors ejector, ejectors solids conveying, vacuum system solids conveying, vacuum system...
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OEM REPLACEMENT STEAM JET AIR EJECTOR PARTS Maintenance Parts & Field Services Foster Wheeler has been continuously involved in the design and fabrication of feedwater heaters and condensers since the turn of the last century through its predecessor, Wheeler Condenser & Engineering Company, which was formed in 1891.
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www.fwc.com/publications/pdf/OEMReplacementParts.pdf
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