Flow arrangement
Flow arrangement is the arrangement of the directions of multiple flowing bodies. Basic classification of it includes parallel flow (cocurrent), counter flow (countercurrent), and cross flow (crosscurrent); though, some literatures also include cross-counter flow (cross-countercurrent).
Parallel flow
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In parallel flow, the flowing bodies flow in the same direction.[1]
Counter flow
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In counter flow, the flowing bodies flow in opposing directions.[1]
Cross flow
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In cross flow, the flowing bodies flow in directions perpendicular to each other.
As a result of the flowing bodies crossing each other, they cannot flow on the same plane unlike parallel flow and counter flow.
Heat exchange
In parallel-flow heat exchangers, the fluids enter the heat exchanger at the same end.[1]
In counter-flow heat exchangers, the fluids enter the exchanger from opposite ends. Counter flow provides the most efficient transfer of heat. It is able to transfer the most heat from the heat transfer medium per unit mass,[1] due to the fact that the average temperature difference along any unit length is higher.
In a cross-flow heat exchangers, the fluids travel perpendicular to one another.[1]
See also
References
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