Hydraulic Calculation Detail
This series publishes working engineering analysis from K&K's data center program. Numbers are labeled [TARGET], [MODELED], [SENSITIVITY] or [FACT]; nothing here is field-measured data, and no article is a sealed engineering document. Each article states its own limits and open items.
- KK-DCL-101Correcting CDU Pump Heat Moves the Close Threshold, Not the FailureSubstituting the chapter's own later secondary pump figure into its own duty identity moves the closing threshold from about 0.97 to about 0.99 and the published whole-site flow from 1,069 to about 1,044 cubic metres an hour, and the branch still fails to close.
- KK-DCL-102Three Hydraulic Flow Paths Closed; Residual Risk Left the ArithmeticA dimensional cross-check named the three unit confusions it existed to exclude, recomputed the flow basis by three paths that share no intermediate, and by closing them moved the chapter's residual uncertainty entirely onto four registered blockers.
- KK-DCL-103One Cabinet Min-Flow Percentage Describes Two Reynolds RegimesThe single percentage written into the control sequence as the cabinet branch minimum puts the branch at about 21,000 Reynolds at the design mean and about 8,300 at fill temperature, so one setpoint is two flow regimes and the second sits below the threshold the rule exists to stay clear of.
- KK-DCL-104The CDU Compatibility Table Has No Owner, So Closure Has No RecipientThe compatibility table that would reconcile the primary supply temperature against the required secondary supply temperature has no single responsible party, so the document that would close the rating is registered with a named supplier and nobody to receive it.