
Thermal Solutions
32 Thermal/Mechanical Design Guide
For 1U reference heatsink, see Appendix B for detailed drawings. Table 5-1 specifies
Ψ
CA
and pressure drop targets at 9.7 CFM. Figure 5-1 shows Ψ
CA
and pressure drop for
the 1U heatsink versus the airflow provided. Best-fit equations are provided to prevent
errors associated with reading the graph.
For 2U and Tower heatsink, see Appendix B for volumetric drawings. Table 5-1 specifies
Ψ
CA
and pressure drop targets at 30 CFM. At airflows other than 30 CFM, Ψ
CA
and
pressure drop will differ between suppliers as their heatpipe and fin geometries will
vary.
Figure 5-1. 1U Heatsink Performance Curves
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