A heat exchanging system includes a tank including a fluid inlet and a fluid outlet, which encloses (envelopes) a heat exchanger including a manifold tube and one or more one heat exchanging plates, extending from the manifold tube. The manifold tube includes a fluid intake and the fluid outlet, as well as a manifold barrier, which divides the interior of the manifold tube (for example, which is hollow), so as to define within the manifold tube an intake region and an outlet region. The heat exchanging system also has at least one heat exchanging plate extending from the manifold tube, the at least one heat exchanging plate with at least one plate barrier, such that the heat exchanging plate is configured to define a fluid flow path within the heat exchanging plate such that fluid flows from the intake region of the manifold tube.