After quite a bit of help from Latexman last year (this thread: http://eng-tips.com/viewthread.cfm?qid=177111&page=1) I have been calculating frictional losses for power law fluids rather successfully. Most of the calculations I have double checked by a fluids lab that I work with and my...
Thank you both for your replies. We actually have several types of media, all of which are granular solid composites (think along the lines of typical soil). We're working with one cubic meter. The heat source is located at the center extending downward 1/2 meter.
There has been some...
I'm completely new to thermography. I'm involved in a project that where we're introducing a heat source into the center a cube-shaped medium. We need to record the migration of the heat in all directions from the source over a fixed time interval (2-3 minutes).
The ideal end result would be an...
This isn't a student post. This is an existing chiller loop where a small tubular hxx is tapped off the header without a booster pump. I'm trying to get an idea of how much glycol water is moving through the line due to the differential pressure. I didn't design the thing but I have to deal with...
The above diagram represents 2 pipe circuits, the header in bold and a utility circuit (thin blue line).
The pressure at points P1 and P2 is known, and the header flow rate is known.
The pressure at P3 is assumed to be equal to P1 (close enough to call equal).
Can the flow rate through the...
What is the consensus regarding EPDM and VITON resistance to ozonated water? I have had problems with EPDM in and gaseous ozone, VITON was better in this case. I have heard mixed reviews on which to use when it comes to ozonated water. I'm not a CE so admittedly I don't know how it would differ...
Radar can be problematic if not kept clean, if the product tends to foam, or if the tank geometry is unusual.
If you can get AL6XN probes I'd go that way, or possibly ultrasonic.
Thank you each for your replies. The varying responses are pretty much what I expected to see. The link that JLSeagull provided is very helpful for what I would call standard platforms, and pretty much what I adhere to in those cases, specifically all of section (e).
I think Jim Casey hit the...
This topic has come up over and over at our plant. When building an elevated work platform, at what height are handrails required (by OSHA). We have several platforms that are less than about 12" above the floor without handrails, that operators use intermittently. UBC doesn't really cover this...
If a capacitive prox switch, being used to detect liquid level, becomes submerged by the liquid is would you still expect it to signal the PLC that it detects the liquid? One would think so, I'm just wondering if this might produce erratic results.
The assumption is of course that the...
Did you say the the velocity of your CIP water is 3ft/sec? If so, I don't know that it would be causing all (or any) of your issues, but that's a very low velocity in most CIP situations (I have no experience with chocolate however).
7-10 ft/sec is a good rule of thumb for CIP velocity...
I need to determine the vapor pressure of a 50/50 mixture of propylene glycol and water at several temperatures around 100-140 degrees F. Does anyone know of a good reference that might have this information tabulated?
Whoa, you snuck a few posts in up there that I just saw.
I'm working in English units. The only reference material I have on this subject is in SI units.
v = Pa.s
K = Pa.sn
I didn't write it properly in the forum but order of ops I'm using is standard. I went back and solved it again using SI units and was able to get the same result that you did. I made an decimal point error converting Cp to Pa.s (see my post far above). Which was part of the problem. The other...
