The best efficiency point shifted towards higher flow rate with h/b reducing, and the high efficiency area was broadened by using half vane diffusers.
The effects of various operating parameters on thermodynamic and thermoeconomic performance indices like exergetic efficiency, area of heat exchangers and cost of the system are also studied.
In the last years, multi-objective optimization techniques became into one of the main challenges of the building energy efficiency area.
As the experimental and numerical results shown, the high efficiency area is moved closer to the designing flow rate area, the average efficiency of the new model becomes higher.
The proposed loss optimization control strategy can quickly find the optimum flux-weakening current and PWM frequency, and as a result, significantly broaden the high efficiency area of the PMSM direct drive system.
As a marker of overall efficiency, area under the curve for RDW was 0.83 (95% CI, 0.81- 0.84; p < 0.001).
Receiver-operating curve analysis demonstrated that CMR-derived LVEDV predicts plaque vulnerability with low-moderate diagnostic efficiency (area under the curve 0.699) and considerate specificity (83.3%) at the optimal cut-off value (159.0 ml).
It can convert measurements from 39 different categories (e.g. length, volume, fuel efficiency, area, etc).
Consider, for example, the current proposal to reward providers from so-called 'high-efficiency' states like Minnesota, New Hampshire and Washington by re-distributing scarce Medicare dollars from so-called low-efficiency areas like Miami and Los Angeles.
