There are 2 big differences between He and N2
He has atomic mass of 4 and N2 has an atomic mass of 28
This is a 7 factor ratio in the mass per molecule/atom this difference in mass will affect the throttling characteristics
The other is He is monoatomic, it is just one atom per molecule and...
Make the fill valve pressure sustaining in addition to level control.
I do not know your pressure readings so as an example ( I am used to imperial units so I will convert to bar)
pumps start at 3 bar
pumps regulated to 3.3 bar
fill valve regulated to 3.7 bar
so
if pressure at the tank is...
Scott Manley visited the testing site and has a video on the subject
https://www.youtube.com/watch?v=ITGgRhjcHAM
he was there just after the 4th flight test of the model unit
Check your local supplier if they have carboys
15 gallons and weigh 130 lbs. So can be moved with
a hand truck
My crew picks them up with a maximum of 6 at a time in a trailer or pickup bed
need to keep it under 1000 lbs., otherwise placards and hazmat are required.
My local delivery is a...
Lugging used to be really bad as the oil pumps (or other methods such as slingers) were fixed size and a low rpm
and heavy load would not float the bearings and cause damage.
Modern engines have better oil control to avoid this.
Without a thrust face in undisturbed soil, the volume of material to hold the block in place needs to rely on gravity
and friction, a complex calculation.
Vertical thrust blocks use gravity for the vertical down bends and enough rebar is added to hold the block together, and there is enough...
I remember seeing a chart that had particle size verses drop velocity for particles with specific gravity of 2.65 (silt/sand/pebbles in water) but I do not remember where that was.
So, targeting the particle size you wish to capture, then ensure flow across the bay is has a Reynolds number
less...
I use C-900 all the time
A few vulnerabilities
Shading is important if using native backfill, but that is true of all buried pipes.
Inserting the spigot into the bell the correct distance and not all the way. If the pipe is consistently pushed to home,
the pipe can fracture starting where...
Friction loss is not your problem. 30 gpm in a 4 inch has minimal friction loss.
increasing to 6 inch will not fix that.
Is the pressure from the supply consistent?
Do you have power? Can you get power?
if no power, a small bank of solar panels could power
a set of 1/6 or 1/3 hp circulating...
Ed
There I beg to differ
I prefer to replace a cheap plastic fan when it fails in 5 to 10 years
which pulls a suction on the room and vents it outside (put the fan in an easy to replace location)
Than to pressurize the room with the corrosive agent which will leak out any penetration
be it...
This is a case where the designer look at a chemical, in this case NaOCl and see that if the concentration is less than 1% it is not hazardous according to NFPA, which is why salt generators run that low of concentration. True all sorts of rules fall by the wayside, (containment, placarding...
I have had good luck about a decade ago with Charlatte
my client had a bladder fail and they replaced it under warrantee
https://charlattereservoirs.fayat.com/en
The grid fins do not fold down on super heavy, that is part of the design, they do twist though.
The grid fins are also support structure for the tower to catch, lift, set
and hold while at the launch stand. My guess adding a pivot weighs more than the performance loss
of having them in the...
Thanks for all your comments
We got the SCADA settings to ignore the spikes and will schedule a replacement sensor and cable
as soon as time and budget allow
Hydrae
