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Posted by ChiefMark on January 22, 2005 at 09:54:36:
In Reply to: What's the difference between Steam Generator and Steam Boiler? posted by Eric Cheng on December 16, 2004 at 18:51:31:
: On reading some products specification I've encountered terms like steam generator and steam boiler. I would like to ask what's the differences between them? Is it related to their steam generation process or steam usage, or other aspects? Please kindly advice!
: Generally the term boiler is used for when the water circulates through natural convection. The mass of water in either water tube or fire tube boiler circulated naturally releasing steam in the steam space above (fire tube) or in the steam drum (water tube). A steam generator usually has forced (pumped) water circulation through a series of tubes and is kept under higher pressure to prevent steam formation in the tubes. Ultimately, the pumped water goes into a steam seperator where the pressure is reduced somewhat and some of the water flashes into steam. Steam generators can get around some jurisdictional requirements to employ operators because they lack large drums and water volumes and thereby are less hazardous. Because of the low water volumes and high heat flux usually designed-in, proper water treatment is very important.