The in/famous Dyson branding aside, I'd like to measure the fan's volumetric efficiency per watt compared to a conventional inline blade design. In other words

The in/famous Dyson branding aside, I'd like to measure the fan's volumetric efficiency per watt compared to a conventional inline blade design. In other words, how much air is moved at what speed given the electrical energy expended to drive the impeller. I doubt seriously that it's much better than conventional fan designs given that it has 3 distinct regimes of airflow (intake duct, impeller blade, Coanda foil). Additionally, though inline impellers can be quite efficient, having these 3 distinct vector flow regimes will bleed energy in de/compression inlet/exhaust artifacts (noise and vibration) so it won't be much quieter than a conventional design.