What flow type occurs when two streams move perpendicular to each other?
A. Cross flow
B. Hybrid flow
C. Parallel flow
D. Laminar flow
A. Correct. Cross flow occurs when two streams move perpendicular to each other.
B. Incorrect. Hybrid flow occurs when the heat exchanger has multiple passes and baffles.
C. Incorrect. Parallel flow occurs when the streams on both the shell and tube sides move in the same direction.
D. Incorrect. Laminar flow, or streamline flow, occurs when the fluid flow velocities are low, resulting in regular flow patterns.
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