F - Mech Eng,Light,Heat,Weapons – 22 – B
Patent
F - Mech Eng,Light,Heat,Weapons
22
B
F22B 1/18 (2006.01)
Patent
CA 2469411
An evaporator includes two sections - a once-through section (22) and a circulation section (24), both of which include tubes (34, 44) located in the flow of hot gases. Heated water flows through the tubes (34) of the once- through section at a rate sufficient to maintain the interiors of its tubes fully wetted while enabling steam to develop in that water. The circulation section includes a drum (42) that is connected to the tubes (44) of that section such that water from the drum circulates through the tubes and then back to the drum, with the circulation being such that the water in the tubes of the circulation section keeps the tubes fully wetted while steam develops in that water. The water from the tubes of the once-through section discharges into the drum, as does the water circulating back from the tubes of the circulation section.
Un évaporateur comprend deux parties, une partie circulation forcée (22) et une partie circulation (24), ces deux parties comprenant des tuyaux (34, 44) situés dans le flux des gaz chauds. De l'eau chauffée s'écoule à travers les tuyaux (34) de la partie circulation forcée à un débit suffisant pour maintenir l'intérieur de ces tuyaux complètement mouillés et permettre néanmoins le développement de vapeur dans cette eau. La partie circulation comprend un tambour (42) connecté aux tuyaux (44) de cette partie de façon que l'eau provenant de ce tambour circule à travers les tuyaux et retourne ensuite dans ce tambour, la circulation étant telle que l'eau présente dans les tuyaux de la partie circulation garde ces tuyaux complètement mouillés pendant que la vapeur se développe dans cette eau. L'eau provenant des tuyaux de la partie circulation forcée s'évacue dans le tambour, comme le fait l'eau retournant des tubes de la partie circulation.
Marks & Clerk
Nooter/eriksen Inc.
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