If the case is the gate valve disk is stuck open ( or not totally stuck but heavy )
WhenI come to move hand wheel , would the handwheel slide up the stem ? Or still only stem would move down . And what forces hand wheel from climbing up the stem in this case ?
I am reading a book about valves and it says stem of valve can be attached to disk using some methods , one of them is : in slip type joint .
Is that a type of welding method ?
Hi all
I want to know ventilation required for an ICU , the following screenshot is from the ASHRAE standard . Why is the cfm/ft2 column empty ? does this mean that its designed only on number of people ?
Hi all ,
I have assembeled an air conditioning system on software and I want to determine the days where the system should work .
The air conditioning is system is used only for cooling (no heating) . For that case , what is the default time for system to run used by hvac designers ?
Hi all ,
Knowing that wetbulb temperature and enthalpy lines are not identical (only approximated on chart) .
I have a point of known wetness (kg/kg) and known dry bulb temperature and I want to know it's exact enthalpy . Then indentify the point that has the same enthalpy with an RH% of 100% ...
I understand that this job needs someone experienced to handle it .The old gears have been sent to a specialized workshop to make identical copies .Financial resources are very limited where I work.What I'm asking about is the methodology and measurements I would take either to accept the...
Hi all ,
I have bevel gear that works on ring gear (pinion and ring) simillar to the one in the following picture :
I want to charachterize the small bevel gear (pinion) to give the measurements to a workshop to manufacture copies for this gear or buy it.
Also I'd like to take an idea about...
Well that should be a basic question but for me it needs some clarification .
for the bulk modulus of compressibility : K = - dP / (dV/V)
why does K = 0 for compressible fluids ?? ,,,, I think of it like if we compress gas ie:decrease a certain masses volume (compressible fluid) its pressure...
I'd like to clarify more what I want to do :
- All main factors were as I mentioned before 13 - 5 = 8 , and the number of two factor interactions of interest are 11 . The rest of 2 factors interactions and all 3 factor interactions and above are negligible .
- My concern is to follow the same...
Thank you greg , I'm trying to figure out how to do this with matlab know (it might be a bit complex since I'm not a major in statistics).
This step has already been done , they were even more and got down to 13
Hi ,
What if I want to conduct a fractional factorial 2^13-5 experiment with minitab , I mean its a 2^13 and i want to make it a fractional factorial of V resolution so it will be 2^13-5 = 2^8 ,,,, can this ever be done with minitab ? can you recommend another software name that can do such...
Well I don't have a picture its an engineering job interview question (orally)
are you sure ? I thought that was for the compressor only.
The only thing I can think about now is that the discharge might have a check valve while suction not . Maybe the discharge might have a flow control valve...
For a centrifugal pump
what significant signs I can see from outside of a real pump mounted in a system in order to differentiate between suction and delivery lines of centrifugal pump ?
