Method applicable to a continous steam generator, and the...

Details Method applicable to a continous steam generator, and the... Method applicable to a continous steam generator, and the...

F - Mech Eng,Light,Heat,Weapons

22

B

F22B 37/10 (2006.01) F22B 29/06 (2006.01)

Patent

CA 2270596

The inventive continuous steam generator, comprising a combustion chamber the outer enclosure (4) of which consists of evaporating pipes (12) vertically welded to each other, is also designed to be able to reliably work within a pressure range of 200 to 221 bar, while guaranteeing high efficiency. Furthermore, the mass velocity (m) of the liquid (S) circulating in the evaporating pipes (12) can be expressed by the ratio m = 200 + 8,42 . 1012 . q3 . [d/(d - 2s)]s2 . Tmax-5, where q represents the heat flux density affecting the evaporating pipes (12), Tmax the permissible characteristic maximum temperature for the tubing, d the outer diameter of the evaporating pipes (12) and s the wall thickness of said pipes (12).

Le générateur de vapeur en continu (2) selon l'invention, avec une chambre de combustion dont l'enceinte extérieure (4) est constituée de tubulures d'évaporation (12) verticales soudées étanches les unes aux autres, est également conçu pour être opérationnel et fiable dans une gamme de pressions comprise entre 200 et 221 bar et garantir en même temps un degré de rendement élevé. En outre, la vitesse massique (m) du liquide circulant (S) dans les tubulures d'évaporation (12) s'exprime par le rapport m = 200 + 8,42 . 10<12> . q<3> . [d/(d - 2s)]s<2> . Tmax<-5>, où q représente la densité de flux calorifique influant sur les tubulures d'évaporation (12), Tmax la température maximale admissible caractéristique pour le matériel de tubulure, d le diamètre extérieur des tubulures d'évaporation (12) et s l'épaisseur de paroi desdites tubulures (12).

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