Theoretical analysis of the two connection options:
For the analysis, we assume that there are two media with the same heat capacity and the same mass flow.
Fluid 1: 80°C
Fluid 2: 20°C
The maximum achievable temperature for the direct current principle for both media
will be 50 ° C, this would correspond to the mixing temperature.
For counter-flow principle, the maximum achievable temperature for medium 2 will be 80 ° C
and for media 1: 20 ° C.
Consequently, will be by using the counter-flow principle, the temperature difference larger and more thermal energy will be transmit.
Formula for calculation: