Heat exchanging system

Abstract

The invention relates to a system ( 1 ) for exchanging heat between two gaseous fluids (A, B) which are guided in channels. The inventive device has a housing-like module ( 2 ) in which an evaporator chamber ( 5 ) is separated from a condenser chamber ( 6 ) in such a way that it is gas tight. Several heat exchanger tubes ( 15 ) extend out of said evaporator chamber ( 5 ), via a test area ( 9 ) configured between the two chambers ( 5, 6 ), via the condenser chamber ( 6 ) and into an inspection chamber ( 14 ). The inspection chamber ( 14 ) is separated from the condenser chamber ( 6 ) in such a way that it is gas tight, and the heat-exchanger tubes are replaceable. The longitudinal sections ( 16 ) of the heat exchanger tubes ( 15 ) situated in the evaporator chamber ( 5 ) are protected against corrosion, whilst the longitudinal sections ( 18 ) situated in the condenser chamber ( 6 ) have fins ( 19 ).

1 . System for the exchange of heat between two gaseous fluids (A, B) conducted through channels, which system has an evaporator chamber ( 5 ,  5   a ,  37 ), separated in a gas-tight manner from a condenser chamber ( 6 ,  6   a ,  38 ) in a housing-like module, several replaceable heat-exchanger tubes ( 15 ,  30 ) projecting from the evaporator chamber and extending via a test space ( 9 ,  33 ) formed between the two chambers ( 6 ,  6   a ,  38 ;  5 ,  5   a ,  37 ) and via the condenser chamber ( 6 ,  6   a ,  38 ) to an inspection chamber ( 14 ), separated in a gas-tight manner from the condenser chamber ( 6 ,  6   a ,  38 ), where the longitudinal sections ( 16 ,  31 ) of the heat-exchanger tubes ( 15 ,  30 ) in the evaporator chamber ( 5 ,  5   a ,  37 ) are protected against corrosion.  
     
     
         2 . System according to  claim 1 , characterized in that the longitudinal sections ( 39 ) of the heat-exchanger tubes ( 30 ) in the condenser chamber ( 6   a ) are protected against corrosion.  
     
     
         3 . System according to  claim 1  or  claim 2 , characterized in that the corrosion protection consists of a porcelain enamel coating ( 17 ).  
     
     
         4 . System according to  claim 1 , characterized in that the longitudinal sections ( 18 ) of the heat-exchanger tubes ( 15 ) in the condenser chamber ( 6 ) are finned.  
     
     
         5 . System according to one of claims  1 - 4 , characterized in that the module ( 2 ) is preceded in the flow direction of the higher-temperature fluid A by an additional housing-like module ( 21 ) with an evaporator chamber ( 22 ), a condenser chamber ( 24 ), and heat-exchanger tubes ( 25 ), in which additional module the longitudinal sections ( 28 ) of the heat-exchanger tubes ( 25 ) in the evaporator chamber ( 22 ) do not have corrosion protection.  
     
     
         6 . System according to one of claims  1 - 5 , characterized in that the heat-exchanger tubes ( 15 ,  25 ,  30 ) are screwed in a gas-tight manner from the side of the condenser chamber ( 6 ,  6   a ,  24 ) into the partition wall ( 7 ,  23 ) separating the condenser chamber ( 6 ,  6   a ,  24 ) from the evaporator chamber ( 5 ,  5   a ,  22 ) or from the test space ( 9 ,  33 ) by means of a conical, threaded collar ( 26 ).  
     
     
         7 . System according to one of claims  1 - 5 , characterized in that the heat-exchanger tubes ( 15 ,  25 ,  30 ) are fitted in a gas-tight manner by means of a cylindrical or conical bead ( 41 ) into a complementary recess ( 42 ) in the partition wall ( 7 ,  23 ) separating the condenser chamber ( 6 ,  6   a ,  24 ) from the evaporator chamber ( 5 ,  5   a ,  22 ).  
     
     
         8 . System according to one of claims  1 - 7 , characterized in that the test space ( 33 ) is blocked off both against the evaporator chamber ( 37 ) and against the condenser chamber ( 38 ) by chambers ( 36 ) filled with a gas-impermeable material ( 35 ).  
     
     
         9 . System according to one of claims  1 - 8 , characterized in that the longitudinal sections ( 31 ) of the heat-exchanger tubes ( 30 ) in the evaporator chamber ( 5   a ) are preceded in the flow direction of the higher-temperature fluid (A) by a washing device ( 32 ).