LaMont Boiler

For Blog002

 

This schematic of the LaMont was copied from the book: “Steam Power Stations” by Gustaf Gaffert 1940 and it has all of the other types of modern boilers in it also.  There are many advantages to the LaMont.  It is like the monotube in that all of the heat exchange takes place in small water tubes coiled up in some fashion, thus being safe, cheap relatively, and compact.  It is a water level boiler and thus easy to control and certainly easier to control than any monotube known to man.  It is more compact.  People who know say that it has 40% of the tubing of a regular monotube to make the same amount of steam.  It is much more reliable because there are no dry or steam filled tubes where the flame is the hottest.  It lends itself to multi-path, another way to be more compact and efficient.  The trick is in the centrifugal circulating pump that pumps against a 5-10 psi head circulating water at the rate of 5-10 times the evaporation rate the main purpose of which is to scour steam bubbles from nucleate boiling off the sides of the tubes where they insulate the water from the hot tube walls, limiting heat exchange capacity.  The problem is that there are no off-the-shelf circulating pumps available.  Only a few coils need to be in the circulating circuit.  The superheater and economizer sections are normal monotubes and probably with extended surfaces (fins) for better heat exchange.  These are buried so the hottest part of the fire does not get near them.  A person can go on at some length.  The purpose here is merely to show the schematic and thus to get the name spelled correctly.

 

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