[Stoves] Combusting woodgas: was Re: basics: Need different flame-speeds different mixture-procedures?

[David G. LeVine]

At 04:15 PM 12/6/2007, you wrote:
>I was reading about producing 17.7 watts with an efficiency of > 70 %
>using a process called microbial fuel cells (MFC) generating hydrogen.
>Is 17.7 watts enough  to run the fan you need?

A Rotron Ambassador Blower - AMD12K3E - 040715 for example runs
Electrical Specifications
Operating Voltage: 12 Volts
Voltage Range: 7 - 13.5 Volts
Power Supply: 15.0 Watts
Line Current: 1.30 Amps
Locked Rotor Current 2.50 Amps
Nominal Speed: 4400 RPM
Mechanical Specifications
Dimensions: 3.9 x 3.9 x 1.3 in
Weight 7.1 oz
Max Airflow @ 0 in H2O 36.0 CFM
Max Pressure @ 0 CFM 1.700 in H2O
Noise 61.0 dBA

While a Rotron Flight LT 25x10 - CR0212LB-G50 - 032602 runs
Electrical Specifications
Operating Voltage: 12 Volts
Voltage Range: 10.8 - 13.2 Volts
Power Supply: 0.8 Watts
Line Current: 0.07 Amps
Locked Rotor Current 0.07 Amps
Nominal Speed: 8000 RPM
Mechanical Specifications
Dimensions: 1.0 x 1.0 x 0.4 in
Weight 0.25 oz
Max Airflow @ 0 in H2O 1.6 CFM
Max Pressure @ 0 CFM 0.105 in H2O
Noise 15.6 dBA

The blower is much higher pressure and more power hungry ;)  Of 
course that is the tradeoff.

<http://www.comairrotron.com/> is a good engineering resource, but 
expensive for quantity parts

David G. LeVine
Nashua, NH  03060