- Hi Max,

I think I understand the math and logic in your earlier messages. I

have obtained a whole house vacuum motor (as per Greg Manning's

advice) with adjustable air flow. When attached to the system I can

measure the cold air flow with an anemometer and calibrate the inlet

Pitot, the outlet manifold vacuum to give me the actual maximum air

volume/second. This will be less as the hopper is loaded and filters

attached.

I am considering whether to use 5 or 6 tuyeres (as mentioned in

various literature for this size). I have order the pig nozzles (SS)

also as advised by Greg Manning http://www.inetlink.ca/a31ford/cgcmb

Pictures and reports will be forthcoming as time allows. Thank you

for your advice and calculations.

David

--- In WoodGas@yahoogroups.com, "maxgasman" <gasman@...> wrote:

>

>

>

>

> Mess. 8630

>

> Hi, David!

>

> Still too vaguely defined?

>

> Max

>

>

> --- In WoodGas@yahoogroups.com,

> > "maxgasman" <gasman@> wrote:

> >

> > Message: 8380

> >

> > Hi, David!

> > (blabs)

> >

> > I will return to the IV

> > (imaginary velocity)

> > question in your reduction tube.

> >

> > Max

> >

>

> --- In WoodGas@yahoogroups.com,

> > "maxgasman" <gasman@> wrote:

> > mess. 8630

> >

> > Hi, David!

> >

> >

> > My consciousness says that I have been

> > sloppy in following up your initial

> > choices of measures for your generator

> > construction.

> >

> > In mess. 8006 you presented "your case".

> > In mess. 8014 I suggested you to use

> > formulas in mess. 7695.

> >

> > In mess. 8019 you have "fallen into" the

> > SMP tables, and chosen a far too big heart

> > for your motor, as completely forgotten

> > the gas consumption you rightly had

> > calculated!

> >

> >

> > 1m^3/h = 1000 litres/h ;

> > 1h = 3600 s ;

> >

> > m^3 ...... 1000 l

> > ------ ยค ------------- = l/s

> > h .......... 3600 s

> >

> >

> > Type F-3 would have fitted well!

> >

> >

> > In 7695 the starting point was a given

> > restriction diameter.

> >

> >

> > If one starts with a given (cold) gas

> > flow and a chosen (and many times

> > recommended) IV (Imaginary Velocity)

> > it ends up with a Flow-Area and a

> > corresponding diameter of the restriction!

> >

> > These factors are "regula-di-tri" bound

> > together, and earlier explained...

> >

> > In mess. 8014 I gave the "first warning",

> > but got no response...

> >

> > In mess. 8026 a concrete suggestion of

> > how to alter your reduction tube and

> > getting a modest restriction was forwarded...

> >

> > In mess. 8133 interest has moved to grates.

> >

> > In mess. 8326 the 100 mm reduction tube

> > still persists, but can alternatively be

> > modified with a "hat" having the

> > appropriate hole-diameter!

> >

> > Make the length ~2,5 times the diameter,

> > to have enough "playroom"

> > for "all" eventualities.

> >

> >

> > Reading Wikipedia for others?

> >

> > Your "choice": F-300, max 80 m^3/h

> >

> > 1 CF = 0,028 m^3

> > 1 m^3 = 35,32 CF

> >

> > 80 X 35,32

> > ---------------- = 47,09333... CFM

> > ...... 60

> >

> >

> > Your own correct calculation: 4,5 l/s

> >

> > 0,0045 m^3/s X 35,32 = 0,15894 CF/s

> >

> > 0,15894 CF/s X 60 = 9,5364 CFM

> >

> >

> > How is it going?

> >

> > Wiki +

> >

> > Max

> >

> >

> > --- In WoodGas@yahoogroups.com,

> > > "maxgasman" <gasman@> wrote:

> > >

> > > Hi, David!

> > > (blabs)

> > >

> > > I will return to the

> > > IV (imaginary velocity)

> > > question in your reduction tube.

> > >

> > > Max

> > >

> >

> - Hi, David!

It will be interesting to see how

things develop!

Max

--- In WoodGas@yahoogroups.com,> "David" <barclay@...> wrote:

< as the hopper is loaded and filters

>

> Hi Max,

>

> I think I understand the math and

> logic in your earlier messages. I

> have obtained a whole house vacuum

> motor (as per Greg Manning's

> advice) with adjustable air flow.

> When attached to the system I can

> measure the cold air flow with an

> anemometer and calibrate the inlet

> Pitot, the outlet manifold vacuum

> to give me the actual maximum air

> volume/second. This will be less

> attached.

>

> I am considering whether to use 5

> or 6 tuyeres (as mentioned in

> various literature for this size).

> I have order the pig nozzles (SS)

> also as advised by Greg Manning

> http://www.inetlink.ca/a31ford/cgcmb

>

> Pictures and reports will be

> forthcoming as time allows. Thank you

> for your advice and calculations.

>

> David

>