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Permalink Reply by gabet123 on October 22, 2012 at 8:43am

This one is also very good http://hodinfo.com/page/mmw-calc#axzz2A1zfe2vc

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Permalink Reply by moldoveanu.marius on October 27, 2012 at 3:05am

Please let me know if that calculation is valid for PWM - on cathode. On anode seems to may need average voltage - according to ON/OF duty cycle - input. With the "switch" on cathode and with secondary cathode like my system I wonder how to interpret the data.

I get 4.61 (compensated) MMW and  I have 1.87 LPM at 14.5 A and 28 ( cathode pulsed)  V on 12 cells in series.

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Permalink Reply by moldoveanu.marius on October 28, 2012 at 12:46pm

Still wait for an answer from anyone who may have it.

On PWM the MMW calculation should be corrected with duty cycle settings?

If MMW mean milliliters per minute per watt then on PWM should be compensated with ON/OFF duty cycle.

IF I'm right then on my set-up with cathode on PWM and a second cathode ( where voltage drop to 3 due distance ) then I must calculate and input the average voltage (  in my case with  50/50 duty cycle)  and I get 7.70 MMW - compensated by Gabet's calculator and  8.34 MMW compensated by your calculator.  

Is that correct? Since most people get 1 LPM at more than 15 A - 18 A average could be ..:)

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Permalink Reply by Green Fuel H2o on October 29, 2012 at 11:20am

The calculation this excel makes is on actual gas output so what your doing with a pwm makes no difference. You can make your cell jump up and down but the gas is still measured by output. As you can see 7.7mmw is very close to overunity and 8.24 is impossible. To get 8.24 you would need to pull energy out of thin air.

Steve

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Permalink Reply by Green Fuel H2o on October 29, 2012 at 11:24am

gabet123 said:

This one is also very good http://hodinfo.com/page/mmw-calc#axzz2A1zfe2vc

Bob Camball also made mine.

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Permalink Reply by moldoveanu.marius on October 29, 2012 at 11:26am

PWM cut the power on a duty cycle. Voltage is zero. average is based on duty cycle. current mean  total charges passed so  will  not change. 

Total power calculation should be  current x average voltage.

gas is relevant but mmw mean efficiency of a certain volume in milliliters per minute versus power in watts.

may get 0.02 LPM with 10 mmw ...super efficient and impractical to use for most application.

8 mmw is only 87% from unit base don same calculator.

some people get more....

I only get some current from capacitor on OFF phase....could be improved..

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Permalink Reply by Green Fuel H2o on October 29, 2012 at 11:34am

You keep thinking that. The point is you don't have overunity. You can twist the numbers all you want but you cant brake the law. You should pose your question to Bob Campball. He will have a better answer for you.

moldoveanu.marius said:

PWM cut the power on a duty cycle. Voltage is zero. average is based on duty cycle.

Total power calculation should be  current x average voltage.

gas is relevant but mmw mean efficiency of a certain volume in milliliters per minute versus power in watts.

may get 0.02 LPM with 10 mmw ...super efficient and impractical to use for most application.

8 mmw is only 87% from unit base don same calculator.

some people get more....

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Permalink Reply by moldoveanu.marius on October 29, 2012 at 11:36am

no I not have, no one will ever have ...:) 1 = infinite.

who's Mr.Campball and why I should ask him? 

I used both, the one from Gabet and yours

I add only duty cycle correction ...if is not correct I like to know ...not because 8 mmw is overunity ..or too close..:) 

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Permalink Reply by moldoveanu.marius on October 29, 2012 at 11:50am

I see now...Mr.Campball ( or Camball? as Gabet say) is the one who create both versions of that spreadsheet...OK, who can ask him or how can I contact him?

You are the one with that beautiful diagram...I suggested to add a second cathode - eventually a metallic tank...had you the curiosity to try? it will create a capacitor on OFF cycle and will get a better result in gas volumes and quality as well....

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