Hey so how about making a heating element out of a Tesla Turbine?
Wikipedia said:
The Tesla turbine is a bladeless centripetal flow turbinepatented by Nikola Tesla in 1913. It is referred to as a bladeless turbine because it uses the boundary layer effect and not a fluid impinging upon the blades as in a conventional turbine. The Tesla turbine is also known as the boundary layer turbine, cohesion-type turbine, and Prandtl layer turbine (after Ludwig Prandtl). Bioengineering researchers have referred to it as a multiple disk centrifugal pump.[1][2] One of Tesla’s desires for implementation of this turbine was for geothermal power, which was described in "Our Future Motive Power".[3]
http://en.wikipedia.org/wiki/Tesla_turbine
It's almost like a vacuum as the air particles are drawn into it via molecular cohesion, and hey presto does that give us uniformly heated air but also an amazing range of airflow exchange in cubic litres per second? Like a VHW, but with the new capability of also generating sufficient mV/V power to charge up a small digital thermometer at both the air intake and exhaust points? There's our actual temperature, and how efficiently we're transferring heat into the core, and some sort of regulated power source to heat the element (and is there a use for induction here, could the turbine itself remain in a 100% clean air path through glass encapsulation, while still delivering useful rates of air flow? And you could also power a herbal load stirrer in a similar way, working like a cork-screw style hole-digger?).
Now you have full control of airflow rates over a large range, and you can turn the power up or down (air flow tesla turbine speed), independently of heat up or down. Could also be cool to send samples of it direct to HPLC for cannabinoid content spectra - in or near real-time?
(EDIT: fixed up a few grammatical leaps)
I'd buy it