Shell and tube evaporator

Abstract

An evaporator for a refrigeration system wherein a water makes a plurality of passes therethrough, includes a tube bundle assembly having a known tube bundle portion associated with each of a plurality of passes of water therethrough, each of a plurality of tubes of a tube bundle portion associated with a first water pass having a lesser diameter than the diameter of tubes of tube bundle portions associated with successive passes of water. A method of forming an evaporator is further included.

1 . An evaporator for a refrigeration system wherein a flow of water makes a plurality of substantially sequential end to end passes therethrough, comprising: 
 a tube bundle assembly having a known tube bundle portion associated with each of a plurality of passes of water therethrough, each of a plurality of tubes of a tube bundle portion associated with a first water pass having a lesser diameter than the diameter of tubes of tube bundle portions associated with successive passes of water.    
   
   
       2 . The evaporator of  claim 1  wherein the diameter of tubes of tube bundle portions associated with each successive pass of water is greater than the diameter of tubes of tube bundle portion associated with a previous pass of water.  
   
   
       3 . The evaporator of  claim 1  wherein a flow rate of all of the tubes of the tube bundle portions associated with each of the passes of water is substantially equal.  
   
   
       4 . The evaporator of  claim 1  having the tube bundle portion associated with a first water pass and a tube bundle portion associated with a second water pass.  
   
   
       5 . The evaporator of  claim 4 , a plurality of tubes comprising the tube bundle portion associated with the first water pass having a diameter of substantially 0.50 to 1.0 inches.  
   
   
       6 . The evaporator of  claim 4 , a plurality of tubes comprising the tube bundle portion associated with the first water pass having a diameter of substantially 0.75 inches.  
   
   
       7 . The evaporator of  claim 4 , a plurality of tubes comprising the tube bundle portion associated with the second water pass having a diameter of substantially 0.75 to 1.5 inches.  
   
   
       8 . The evaporator of  claim 4 , a plurality of tubes comprising the tube bundle portion associated with the second water pass having a diameter of substantially 1.0 inches.  
   
   
       9 . A method of forming an evaporator for a refrigeration system wherein a flow of water makes a plurality of substantially sequential end to end passes therethrough, comprising: 
 forming a tube bundle assembly, a known tube bundle portion being formed associated with each of the plurality of passes of water therethrough, and forming each of a plurality of tubes of a tube bundle portion associated with a first water pass of a lesser diameter than a diameter of tubes of tube bundle portions associated with successive passes of water.    
   
   
       10 . The method of  claim 9  including forming the diameter of tubes of tube bundle portions associated with each successive pass of water with a greater diameter than the diameter of tubes of a tube bundle portion associated with a previous pass of water.  
   
   
       11 . The method of  claim 9  including substantially equalizing a flow rate of all of the tubes of the tube bundle portions associated with each of the passes of water.  
   
   
       12 . The method of  claim 9  including forming the tube bundle portion associated with a first water pass and forming a tube bundle portion associated with a second water pass.  
   
   
       13 . The method of  claim 12 , including forming a plurality of tubes comprising the tube bundle portion associated with the first water pass having a diameter of substantially  0 . 50  to  1 . 0  inches.  
   
   
       14 . The method of  claim 12 , including forming a plurality of tubes comprising the tube bundle portion associated with the first water pass having a diameter of substantially 0.75 inches.  
   
   
       15 . The method of  claim 12 , including forming a plurality of tubes comprising the tube bundle portion associated with the second water pass having a diameter of substantially 0.75 to 1.5 inches.  
   
   
       16 . The method of  claim 12 , including forming a plurality of tubes comprising the tube bundle portion associated with the second water pass having a diameter of substantially 1.0 inches.