Recent content by M.Pesh

Thanks for the help, I should have clarified myself better, What I was looking for was 0-10inHg gauge pressure This leaves me well into the low vacuum region.

Hello, I need some help selecting a vacuum pump. Required specs - 5 CFM - vacuum (0-10 in/mg) - possibility of sucking up small metal particles (size:50-200 microns) - working fluid is argon/air - needs to handle high heat My original feeling was to go with a venturi design made...

I wanted to stay around 1000 for my own personal preference. I'm obliviously not vary fluent in my fluids, but I was under the impression an Re number under 1500 was laminar. So I picked 1000 because it safely below the 1500 mark and it would allow me to run one of two choices: 1) Higher V 2)...

I wanted to know about vacuum because it's involved in another project. One to similar to this, only requiring vacuum. The nozzle. (requirements) -a required velocity of 0.6 ft/s (I would like to be able to vary it from .2 to 1.4) -the working fluid will be exiting to atmosphere pressure -the...

The venturi will work for vacuum correct? Also, To keep my laminar flow and an Re number of 1000 with a nozzle 5x bigger, I do have to lower the velocity by 5 times. This means I now need a flow rate of .276 SCFH. The Rotameter made by McMaster uses 1/8” NPT thread. This will allow me to run...

Ok, let's say I went with the pressure difference approach. How would I get the flow velocity?

Also since I made my nozzle 5x bigger do I have to divide my flow rates by 5 to keep everything scale?

The rotameter up-steam will do the job. As for the pressure reg and metering valve, I get what your saying. but I'm not sure how to find a metering valve with a Cv of 0.00097. A few suggestions would be a help! Thanks for you help thus far, It's much appreceated. -M.Pesh.

The working fluid is Air and it exits to atmosphere. So my flow rate world be Q=(v)(a) (.000128)(3)(60)=.02304 CFM I plan to control the pressure via a standard adjustable pressure regulator (0-100 psi), I am also open to suggestions.

I have never loaded a picture into a forum before I hope this worked. -M.Pesh

HI, I'm constructing a 2D nozzle for fluid testing. I have made my nozzle X5 larger and taken a 1/8" slice. Now I'm having trouble designing the 2d nozzle so that the exiting air will have a velocity of 3ft/s. I must maintain an Re number of 1000 as well. My problem lies in that fact that. I...