Replacing copper tubes by aluminium in copper tubes/aluminium fins heat exchangers bring savings of up to 60% on the tubes for equal performances of the system. Cost saving are similar for all-aluminium brazed heat exchangers made of MPE, fins and manifolds, but more compact systems can be designed thanks to the better efficiency. For more details, please refer to the table of comparision below.
| |
Round tube mech. expanded (Cu tube/ Al fin) |
Round tube mech. expanded (Al tube/ Al fin) |
Brazed aluminium
(Al MPE tube/Al fin) |
| Required space |
100% |
100% |
28% |
| Tube weight |
100% |
66% |
33% |
| Heat exchanger weight |
100% |
83%
|
42% |
Tube cost per heat exchanger**
|
100%
|
20% - 40%
|
30%
|
| Burst pressure |
100% |
100% |
100% |
Data based on properly designed condensers
* Compensated for increased tube wall thickness to meet burst pressure
** LME prices 23.03.09
