Nested sub-conduits in the EGR cooler create asymmetric resistance that prevents backflow, maintaining efficiency despite low manifold pressure differences.
A circular section tubular shell reduces mechanical stress concentrations in plate fin heat exchangers.
Varying heat exchange tube slot lengths balances windward and leeward performance, reducing condensate accumulation and wind resistance.
Tapered and curved wall portions in a wick structure prevent liquid pooling at junctions, maintaining fluid continuity.
Segmented cooling surfaces and vapor channels prevent deformation and leakage while maintaining wick wetness to resolve dry-out risks in high-flux applications.
Stamped sheets with variable geometry flow openings form channels that change in area and shape, enhancing thermal efficiency while reducing weight.