Heat exchanger

Abstract

A heat exchanger has tubes arranged in parallel at regular distances so they extend in the same direction as the ventilation direction of heat exchange medium flowing through the tube. The heat exchange medium is introduced and distributed to the plural tubes via an inlet tank. A fin interposed between the tubes increases the contact surface area of air passing between the tubes. The heat exchange medium flowing through the tubes is collected and then discharged by an outlet tank. The dimensions of the cross-sectional area S tube of the tube and the sectional area S tank of the inlet tank or the outlet tank satisfy the following formula: 0.04 < sectional   area   of   tube   ( S tube ) sectional   area   of   tank   ( S tank ) < 0.06

1 . A heat exchanger, comprising:
 a plurality of tubes arranged (a) in parallel at regular distances to be extend in a ventilation directions and (b) so a heat exchange medium is adapted to flow through them;   an inlet tank into which the heat exchange medium is adapted to be introduced and then distributed to the plurality of tubes;   a fin interposed between the tubes for increasing the contact surface of the tubes with air passing between the tubes; and   an outlet tank for collecting and then discharging the heat exchange medium which is adapted to flow through the tube   wherein dimensions of the cross-sectional area S tube  of the tube and the cross-sectional area S tank  of the inlet tank or the outlet tank are in accordance with:   
     
       
         
           
             0.04 
             < 
             
               
                 sectional 
                  
                 
                     
                 
                  
                 area 
                  
                 
                     
                 
                  
                 of 
                  
                 
                     
                 
                  
                 tube 
                  
                 
                     
                 
                  
                 
                   ( 
                   
                     S 
                     tube 
                   
                   ) 
                 
               
               
                 sectional 
                  
                 
                     
                 
                  
                 area 
                  
                 
                     
                 
                  
                 of 
                  
                 
                     
                 
                  
                 tank 
                  
                 
                     
                 
                  
                 
                   ( 
                   
                     S 
                     tank 
                   
                   ) 
                 
               
             
             < 
             0.06 
           
         
       
     
   
   
       2 . The heat exchanger according to  claim 1 , wherein the volume V tank  of the inlet tank or the outlet tank and the total cross-sectional area A tube  of the tubes calculated by multiplying the sectional area of the tube and the number of tubes are in accordance with: 
     
       
         
           
             150 
             < 
             
               
                 
                   volume 
                    
                   
                       
                   
                    
                   of 
                    
                   
                       
                   
                    
                   inlet 
                    
                   
                       
                   
                    
                   tank 
                    
                   
                       
                   
                    
                   or 
                    
                   
                       
                   
                    
                   outlet 
                    
                   
                       
                   
                    
                   tank 
                    
                   
                       
                   
                    
                   
                     ( 
                     
                       V 
                       tank 
                     
                     ) 
                   
                 
                  
                 
                     
                 
               
               
                 total 
                  
                 
                     
                 
                  
                 sectional 
                  
                 
                     
                 
                  
                 area 
                  
                 
                     
                 
                  
                 of 
                  
                 
                     
                 
                  
                 tubes 
                  
                 
                     
                 
                  
                 
                   ( 
                   
                     A 
                     tube 
                   
                   ) 
                 
               
             
             < 
             230