Axial Heat Exchanger for Regulating the Temperature and Air Comfort in an Indoor Space

Abstract

The present invention offers an axial heat exchanger for exchanging heat between a gas medium and a fluid or liquid medium. The axial heat exchanger comprises a longitudinal and substantially axially extended outer channel that is adapted to enclose a flow of a first gas medium. The heat exchanger also comprises a plurality of substantially parallel inner channels that are adapted to enclose a flow of a second liquid medium. The inner channels are arranged inside the outer channel so as to extend substantially axially along the inside of said outer channel for enabling a transfer of heat between said first gas medium and said second liquid medium. At least one of the inner channels is joined with at least one elongated sheet. The sheet is arranged to extend substantially axially along the inner channel so as to substantially coincide with the direction of flow of the first gas medium through the outer channel. The sheet has a first component directed from the centre of the outer channel to the wall of the outer channel and a second component extending from the end of the first component along the wall of the outer channel.

1 . An axial heat exchanger (A 1 , A 2 ) comprising:
 an axially extending outer channel ( 200 ) having a wall adapted to enclose a flow of a first gas medium; and   a plurality of elongated substantially parallel inner channels ( 120 ) adapted to enclose a flow of a second liquid medium,   which inner channels ( 120 ) are arranged inside the outer channel ( 200 ) so as to extend substantially axially inside said outer channel ( 210 ) for enabling a transfer of heat between said first gas medium and said second liquid medium, wherein at least one inner channel ( 120 ) is joined with at least one elongated sheet ( 110 ); the elongated sheet ( 110 ) extends substantially axially along said inner channel ( 120 ) so as to substantially coincide with the direction of flow of the first gas medium through the outer channel ( 200 ) and wherein said sheet comprises a first component ( 112 ) extending from a central portion of the outer channel towards the wall of the outer channel and a second component ( 114 ) extending from the end of the first component near the wall of the outer channel in a direction substantially along the wall of the outer channel.   
   
   
       2 . An axial heat exchanger (A 1 ) according to  claim 1 , wherein said outer channel ( 200 ) is tubular and said first component ( 112 ) is substantially disposed radially and said second component is substantially disposed tangentially relative to the outer channel ( 200 ). 
   
   
       3 . An axial heat exchanger (A 1 ) according to  claim 2 , wherein the second component ( 114 ) is curved or creased to substantially match the curve of the outer channel ( 200 ). 
   
   
       4 . An axial heat exchanger (A 1 ) according to  claim 2 , wherein said inner channels ( 120 ) are arranged on an imaginary circle that is concentric with the outer channel ( 200 ). 
   
   
       5 . An axial heat exchanger (A 1 ) according to  claim 2 , wherein said first component ( 112 ) and said second component ( 114 ) are made from one piece of material. 
   
   
       6 . A heat exchanging system comprising at least two axial heat exchangers (A 1 ) according to  claim 5 , wherein:
 said axial heat exchangers (A 1 ) are serially coupled to enable a flow of a first gas medium through the outer channel ( 200 ) of a first heat exchanger (A 1 ) into the outer channel ( 200 ) of the next heat exchanger (A 1 ) and through each serially coupled heat exchanger (A 1 ); and   said axial heat exchangers (A 1 ) have a first distribution arrangement ( 122 ,  130 ,  140 ) and a second distribution arrangement ( 121 ,  150 ,  160 ,  170 ) adapted to be coupled to a supply channel arrangement ( 710 ) that extends substantially along the serially coupled heat exchangers (A 1 ) for providing a flow of a second liquid medium through the inner channels ( 120 ) of each axial heat exchanger (A 1 ).   
   
   
       7 . A heat exchanging system comprising at least two axial heat exchangers (A 1 ) according to  claim 6 , wherein:
 said axial heat exchangers (A 1 ) are coupled in parallel to enable a substantially simultaneous and parallel flow of a first gas medium through the outer channel ( 200 ) of the parallel heat exchangers (A 1 ); and   each axial heat exchanger (A 1 ) have a first distribution arrangement ( 122 ,  130 ,  140 ) and a second distribution arrangement ( 121 ,  150 ,  160 ,  170 ) adapted to be coupled to a supply channel arrangement ( 710 ) that extends substantially along the coupled heat exchangers (A 1 ) for providing a flow of a second liquid medium through the inner channels ( 120 ) of each axial heat exchanger (A 1 ).   
   
   
       8 . A heat exchanging system according to  claim 7 , wherein at least one end of the parallel heat exchangers (A 1 ) is coupled to a shared parallel distribution arrangement ( 740 ) that is arranged for enabling a substantially simultaneous parallel and possibly forced flow of a first gas medium through the parallel heat exchangers (A 1 ).