Shell-and-tube heat exchanger and method for changing the temperature of a medium

Abstract

The invention relates to a shell-and-tube heat exchanger for changing the temperature of a medium, having a plurality of channels of the tubes, an inlet chamber, an outlet chamber, and at least one channel of the shell for a further medium, wherein the medium can be conveyed into the inlet chamber and, from there, through at least a portion of the channels of the tubes into the outlet chamber, and having a closure means arranged on the outlet chamber and designed and adjustable in such a way that outlet openings of each subset of a plurality of different subsets of the channels of the tubes can be closed off. The invention also relates to a method for changing the temperature of a medium by means of a shell-and-tube heat exchanger.

1 . A shell-and-tube heat exchanger for changing the temperature of a medium, having a plurality of channels of the tubes, an inlet chamber, an outlet chamber, and at least one channel of the shell for a further medium, wherein the medium can be conveyed into the inlet chamber and, from there, through at least a portion of the channels of the tubes into the outlet chamber,
 wherein a closure means arranged on the outlet chamber and designed and adjustable in such a way that outlet openings of each subset of a plurality of different subsets of the channels of the tubes can be closed off.   
     
     
         2 . The shell-and-tube heat exchanger according to  claim 1 , wherein the outlet openings of all channels of the tubes are formed in an outlet plate with a planar surface, and wherein the closure means has at least one planar closure surface which rests on the surface of the outlet plate and is movable in a plane of the surface. 
     
     
         3 . The shell-and-tube heat exchanger according to  claim 2 , wherein the at least one planar closure surface can be positioned over the outlet openings of the channels of the tubes to be closed off, in accordance with the channels of the tubes to be closed off. 
     
     
         4 . The shell-and-tube heat exchanger according to  claim 2 , wherein the at least one planar closure surface is designed as one or more circular sectors. 
     
     
         5 . The shell-and-tube heat exchanger according to  claim 2 , wherein a contour of the closure surface is adapted to a grid of the channels of the tubes. 
     
     
         6 . The shell-and-tube heat exchanger according to  claim 1 , wherein the closure means comprises a plurality of closure pins, each of which can be introduced into one of the outlet openings. 
     
     
         7 . The shell-and-tube heat exchanger according to  claim 6 , wherein the plurality of closure pins is designed in such a way that, according to the channels of the tubes to be closed off, it is possible to therewith close off only the outlet openings of the channels of the tubes to be closed off. 
     
     
         8 . The shell-and-tube heat exchanger according to  claim 6 , wherein the outlet openings of all channels of the tubes are formed in an outlet plate with a planar surface, and wherein the plurality of closure pins is arranged on a closure plate which is arranged parallel to the planar surface and is movable relative to this surface. 
     
     
         9 . The shell-and-tube heat exchanger according to  claim 8 , wherein the plurality of closure pins is divided into different subsets so that the closure pins of one subset each have the same length and the closure pins of different subsets each have a different length relative to the closure plate. 
     
     
         10 . A method for changing the temperature of a medium by means of a shell-and-tube heat exchanger having a plurality of channels of the tubes, an inlet chamber, an outlet chamber, and at least one channel of the shell for a further medium, wherein the medium is conveyed into the inlet chamber and from there through at least a portion of the channels of the tubes into the outlet chamber,
 wherein a closure means arranged on the outlet chamber is adjusted according to the change in temperature in such a way that outlet openings of each subset of a plurality of different subsets of channels of the tubes are closed off therewith.   
     
     
         11 . The method according to  claim 10 , wherein a shell-and-tube heat exchanger is used, the shell-and-tube heat exchanger for changing the temperature of a medium, having a plurality of channels of the tubes, an inlet chamber, an outlet chamber, and at least one channel of the shell for a further medium, wherein the medium can be conveyed into the inlet chamber and, from there, through at least a portion of the channels of the tubes into the outlet chamber,
 wherein a closure means arranged on the outlet chamber and designed and adjustable in such a way that outlet openings of each subset of a plurality of different subsets of the channels of the tubes can be closed off.