Negative head red line is not possible.
Red dashed is better but you'll have slack line/ unstable flow
Blue line is better, but if you don't have a valve adding back pressure then that last 50m will be leaning towards slack line flow as well.
The margins though are really low so it might...
Yup.
When you're dealing with unstable flow, unstable things happen.
Letting it drain from the bottom is not good, but if Katmar is correct and you're only just at atmospheric pressure at the high point when pumping, an air valve could let in sighs of air which died the same thing.
Well temperature range at the very least. Your "high temperature" might not be mine and vice versa.
When you're talking to vendors then the first thing they'll ask is for properties of the fluid to see if works with their meter, plus velocity, density etc
See this. https://www.eng-tips.com/threads/straight-run-at-suction-of-pumps.393848/
Looks to me to be very vendor dependant, but the internal flow path of a top suction pump usually has a 90 degree element to it so they seem to be less picky about the 5D.
So you need to see what the pump...
From what I can see the hydraulic system for the MAX is basically unchanged from the NG.
So you really don't want to lose your no 2 engine by the look of it.... There is an electric pump but it is lower capacity.
There are some elements of standby and crossover, but I think to would take you a...
Ok, that makes it clearer. From your OP I thought you were trying to do all this yourself...
So is this re gassified LNG? If so it will be virtually pure methane and VERY dry. You will need to tell all the vendors, valve suppliers etc about that as seals and elastomers can dry out or lose...
That seems to be the case. There are some cross over elements, but the "power transfer unit" seems toexostfor the LE flaps only. It's not clear if its on,y to retract them or extend them, but the TEflaps are system B only by the look of it.
Apparently that rrrr rrrr rrrr noise you sometimes...
I guess he just thought to move them to a different position than they were to start with....
There are a whole bunch of very similar switches and some will normally be on and others off.
It is a pretty big error, but the fact that only kne hydraulic system runs the flaps is a bit single point...
There is probably a way to estimate the time, but the difficulty is knowing if you have a smooth transition between full channel flow and open channel flow.
I suspect not so you will end up with slugging and surging of flow as the air enters in gulps, then the water flows, then slows down then...
So a and b are two separate systems which don't inter connect? That's not intuitive.
From the excellent b737 site http://www.b737.org.uk/hydraulics.htm
There are some automatic and manual cross connection between the two systems, but it looks rather complex all right.
No1. From your sketch I don't think this will syphon, but it is not clear where the water level is in the wet well. As long as it is below the level of the discharge by at least 1m you will not syphon. Unless you have a good non return valve the pipe could reverse flow and syphon the pipe back...
