Tube-Bundle Heat Exchanger

Abstract

The invention concerns a heat exchanger ( 1, 40 ) comprising: a first container body ( 2, 50 ); a first tube bundle ( 3, 57 ) arranged inside the first container body ( 2, 50 ); two tube plates ( 4, 51; 5, 52 ) for supporting the first tube bundle ( 3, 57 ); an evaporation chamber ( 2 a ) defined between the first container body ( 2, 50 ), the first tube bundle ( 3, 57 ) and the tube plates ( 4, 51; 5, 52 ); an inlet head ( 8, 53 ) and an outlet head ( 9, 54 ) communicating with each other through the first tube bundle ( 3, 57 ); an inlet way ( 10 ) and an outlet way ( 11 ) for the passage of a first fluid through the heads ( 8, 53; 9, 54 ) and the first tube bundle ( 3, 57 ); an inlet mouth ( 12 ) through which a second fluid flows into the evaporation chamber ( 2 a ). A superheating unit ( 20, 44 ) of the second fluid, associated with the first container body ( 2, 50 ), is provided.

1 ) Heat exchanger comprising:
 a first container body that develops mainly in longitudinal direction;   a first tube bundle arranged inside said first container body;   two tube plates, each fixed to one end of said first container body in order to support said first tube bundle;   an evaporation chamber defined between said first container body, the outer surface of said first tube bundle and said tube plates;   two covers, each one of which is applied to the outside of a corresponding tube plate to define an inlet head and an outlet head communicating with each other through said first tube bundle;   at least one inlet way present in said inlet head and at least one outlet way present in said outlet head for the passage of a first fluid through said heads and said first tube bundle;   at least one inlet mouth present in said first container body for the inlet of a second fluid in said evaporation chamber;   a superheating unit of said second fluid, of the type with tube bundle and associated with said first container body,   
     characterized in that said superheating unit comprises:
 a second container body that develops mainly in longitudinal direction; 
 a second tube bundle arranged inside said second container body; 
 two tube plates, each fixed to one end of said second container body in order to support said second tube bundle; 
 a superheating chamber defined between said second container body, the outer surface of said second tube bundle and said tube plates; 
 two covers, each one of which is applied to the outside of a corresponding tube plate to define an inlet head and an outlet head communicating with each other through said second tube bundle; at least one inlet way present in said inlet head and at least one outlet way present in said outlet head for the passage of said second fluid through said heads and said second tube bundle; 
 a plurality of intake ways created in said second container body for the passage of said second fluid from said evaporation chamber into said superheating chamber; 
 at least one outlet mouth of said superheated fluid, created in said second container body. 
 
   
   
       2 ) (canceled) 
   
   
       3 ) (canceled) 
   
   
       4 ) (canceled) 
   
   
       5 ) Heat exchanger according to  claim 1 ), characterized in that each tube plate supporting said first tube bundle and each corresponding tube bundle supporting said second tube bundle are obtained in a single flange. 
   
   
       6 ) Heat exchanger according to  claim 1 ), characterized in that in each one of said heads it is possible to identify a manifold chamber included between the cover and the corresponding tube plate, wherein said chamber communicates with a corresponding way for the passage of said first fluid and with a corresponding tube bundle. 
   
   
       7 ) Heat exchanger according to  claim 1 ), characterized in that the temperature of said first fluid at the level of said inlet way is higher than the temperature of the same first fluid at the level of said outlet way. 
   
   
       8 ) Heat exchanger according to  claim 7 ), characterized in that said first fluid is water. 
   
   
       9 ) Heat exchanger according to  claim 1 ), characterized in that the temperature of said second fluid at the level of said inlet way is higher than the temperature of the same fluid at the level of said outlet way and at the level of said inlet mouth. 
   
   
       10 ) Heat exchanger according to  claim 1 ), characterized in that said outlet way of said outlet head of said superheating unit communicates with said inlet mouth of said first container body. 
   
   
       11 ) (canceled)