Here is a URL for this site with more information.
http://www.eng-tips.com/faqs.cfm?spid=731&sfid=3&CFID=16647063&CFTOKEN=71076716
Good Luck
Don Leffingwell
Thank you to all who responded. We did get a licensed electrician to look at the panel. The problem was a corroded main breaker, which of course we couldn't see without taking the panel apart.
Don
Thank you to all who responded. We did get a licensed electrician to look at the panel. The problem was a corroded main breaker, which of course we couldn't see without taking the panel apart.
Don
I was at my brother-in-laws for dinner Sunday night and he told me of a problem he had been having with his lights. He said they keep flickering, sometimes fast, sometimes slow. It doesn't happen all the time, and it seems to be random. And it only happens in part of the house. While I was...
I was at my brother-in-laws for dinner Sunday night and he told me of a problem he had been having with his lights. He said they keep flickering, sometimes fast, sometimes slow. It doesn't happen all the time, and it seems to be random. And it only happens in part of the house. While I was...
Thanks Reddog.
I have purchased the NFPA 79 Electrical Standard for Industrial Machinery based on posting this same question in the electrical controls forum and the response I got there. Thanks anyway.
Don
Below is the Lincoln Electric Site. I would also recommend this book.
Don Leffingwell
dlefffingwell@snet.net
http://navigation.helper.realnames.com/framer/1/0/default.asp?realname=Lincoln+Electric+Company&url=http%3A%2F%2Fwww%2Elincolnelectric%2Ecom&frameid=1&providerid=0&uid=30021287
The above posters are exactly right. However, if you know the fluid involved, and the geometry, there are some published charts for ranges of heat transfer coefficients.
Some books that have these charts:
Mark's Handbook, Handbook of Heat Transfer, etc.
These type of charts are useful for...
I'm sure you can find the answer at the site below, if not at this particular URL.
Don Leffingwell
dleffingwell@snet.net
http://www.asme.org/bboard/main-frame.tcl?topic=Pressure%20Vessel%20and%20Piping
I don't know about the ultra sound but you can use an infrared temperature sensor to measure the temperature up stream and downstream of the trap. If the temperature is the same, the trap needs repair or replacing.
Don Leffingwell PE
Thank you Steve.
I will contact these people after the Holidays. This project most likely
has been dropped. I have read about the wood flour and polymer twin screw extrusion
technique at the Forest Products Lab site back in April. I sent them a letter and didn't receive a response. I am still...
...by cutting off the excess at the other end. Tehn I would measure what I cut off. Since I know what I started with, I would have an exact answer. Otherwise:
S = r*theta
s = Arc Length
r = bend radius
theta = angle in radians (2*pi radians = 360°)
Use the above to calculate the curved sections.
Main Entry: 3pinion
Function: noun
Etymology: French pignon, from Middle French peignon, from peigne
comb, from Latin pecten -- more at PECTINATE
Date: 1659
1 : a gear with a small number of...
Nelson,
The link below is for the Pressure Vessel and Piping Design Forum at the ASME site. These are the people who have standards for this kind of repair. I suggest that to place your question there.
Don
dleffingwell@snet.net...
Power =Current x Voltage
Power = Current^2 x Resistance for DC circuits
You need to tell us the voltage and if its AC or DC
In the same system of units, Power =Heat
Heating of water, q (heat) = m x cp x (T1-T2)
m = mass of water
cp = specific heat for water
T1 and T2 are starting and stopping...