The above relation is true for both the condition 
Similarly the functional relationship for counter –current exchanger is
|
(8.16)
|
The previous relation (eq. 8.16 and 8.17) were for 1-1 exchanger. The relation for 1-2 exchanger (counter current) is given by eq. 8.18, 8.19),
|
(8.18)
(8.19) |
When the fluid streams are condensing in a 1-1 pass exchanger (fig. 8.15) as shown below,
Fig.8.15: Condenser with the temperature nomenclature
the following relation arrives.
