Honeycomb structure for heat exchanger and heat exchanger

Abstract

A honeycomb structure for a heat exchanger includes: an inner peripheral wall; an outer peripheral wall; and partition walls disposed between the inner peripheral wall and the outer peripheral wall, the partition walls defining a plurality of cells each extending from a first end face to a second end face. In a cross section orthogonal to an extending direction of the cells, the partition walls include one or more first partition walls extending in a radial direction. The inner peripheral wall has an inner diameter of more than 50 mm and 75 mm or less, and the outer peripheral wall has an outer diameter of 60 to 100 mm. The honeycomb structure for a heat exchanger has an opening ratio of 0.15 or more.

1 . A honeycomb structure for a heat exchanger, the honeycomb structure comprising: an inner peripheral wall; an outer peripheral wall; and partition walls disposed between the inner peripheral wall and the outer peripheral wall, the partition walls defining a plurality of cells each extending from a first end face to a second end face,
 wherein, in a cross section orthogonal to an extending direction of the cells, the partition walls comprise one or more first partition walls extending in a radial direction, the inner peripheral wall has an inner diameter of more than 50 mm and 75 mm or less, and the outer peripheral wall has an outer diameter of 60 to 100 mm, and   wherein the honeycomb structure has an opening ratio of 0.15 or more.   
     
     
         2 . The honeycomb structure for a heat exchanger according to  claim 1 , wherein the partition walls further comprise one or more second partition walls extending in a circumferential direction in a cross section orthogonal to an extending direction of the cells. 
     
     
         3 . The honeycomb structure for a heat exchanger according to  claim 1 , wherein the opening ratio is 0.30 or more. 
     
     
         4 . The honeycomb structure for a heat exchanger according to  claim 2 , wherein the opening ratio is 0.30 or more. 
     
     
         5 . The honeycomb structure for a heat exchanger according to  claim 1 , wherein the opening ratio is 0.60 or less. 
     
     
         6 . The honeycomb structure for a heat exchanger according to  claim 2 , wherein the opening ratio is 0.60 or less. 
     
     
         7 . A heat exchanger comprising the honeycomb structure for a heat exchanger according to  claim 1 . 
     
     
         8 . A heat exchanger comprising the honeycomb structure for a heat exchanger according to  claim 2 .