Thermal rating: leaving fluid vs. wet bulb
BAC FXV-0812B-16D-L rating (Braun effectiveness model calibrated to BAC's 131-ton rating) at the live entering fluid temperature and flow, for three fan speeds. Dot = live operating point, ring = BAC expectation, trail = recent history.
Fan 100 %Fan 70 %Fan 40 %Live (trail)Setpoint
Fans: heat rejection and power vs. speed
Expected heat rejection at the live wet bulb and fluid conditions (left axis) and fan power from the affinity law, P ~ speed³ (right axis).
Expected heat rejectionExpected fan powerMeasured