Hi
I would like to get some input from some experienced vibration/balancing people. There has been some debate (between me and some others), about the proper way to balance a 2 stage axial fan rotor. I believe that it should be treated like a 2 plane imbalance and can use a vibration...
Well, I may be getting a new job. It's for a field service engineer and would be so much more money than I'm getting now that it's making my head spin.
The catch is, it would be 100% travel. If there isn't somewhere to go then I can do what I want and still get paid 40hrs a week. 90% of the...
Here is and Example.
There is a system with 2-20ft dia. fans, in parallel, pulling air through a bunch of cooling coils with a cross-sectional area of about 800 ft^2.
One fan is running and the other is isolated by backdraft dampers. In this situation the flow through the unit is 842,770...
If you have a two-fan system that are pulling air at a known CFM, what happens when one is shutdown and blocked off so that air is not allowed to enter through the stopped fan?
There are two identical fans drawings air through a unit with an internal (before the fans) static pressure of 0.832"...
Example
There is a closed loop evaporative cooler. The cooler consist of coils/tube bundles made of 1" OD x 0.065 wall tubing that are bent into serpentines to form 6-passes per tube/circuit and 42 tubes/serps wide. There are several coils/tube bundles set side by side and two large fans with...
I'm making a pressure vessel header out of a sch. 80 8" pipe and for the nozzle coming out of the pipe I would like to use a butt welded 8" Tee.
There are required loads that the "nozzle" needs to be able to support. But I'm not sure how I can demonstrate if it can support them or not. There...
I am making headers for a ‘pressure vessel’ out of pipe and crosses. It will be 4” sch. 40 steel pipe with two (2) 4” butt weld crosses. I would like to have these cut in half after being welded up and be able to use BOTH halfs. It will need to have a small kerf as I can’t have much material...
I am making headers for a ‘pressure vessel’ out of pipe and crosses. It will be 4” sch. 40 steel pipe with two (2) 4” butt weld crosses. I would like to have these cut in half after being welded up and be able to use BOTH halfs. It will need to have a small kerf as I can’t have much material...
Just something that has been bugging me for a little while. On my old setup, once you printed the first time and then saved a drawing again, it would keep the same settings the next time that you wanted to print. Now with my new setup, everytime I goto print I have to re-select all the...
I'm working on a job here and for the foundation of our basin we have specified "95% compacted No. 2 Crusher Run"
The customers QC department has come back and want some kind of spec. or ASTM # that actually specifies WHAT No. 2 Crusher Run is...what standards it has to meet to actually be No...
I'm working on a job here and for the foundation of our basin we have specified "95% compacted No. 2 Crusher Run"
The customers QC department has come back and want some kind of spec. or ASTM # that actually specifies WHAT No. 2 Crusher Run is...what standards it has to meet to actually be No...
We need to test some butt welded tubing to failure with a tensile test at the welded joint. This is 1" OD x .065 steel tubing. Are there and "standards" procedures for doing this? ANSI, ASME?
Thanks
Ken
We have two different style pumps that we want to test for actual flow and generate some curves for them. One is a 2” and one is a 3” (suction & discharge). We want to test them at 1750 RPM and at 3450 RPM and with a range of impeller sizes VS TDH (discharge head).
The problem is that I would...
Hey,
I'm working on a job that is calling for a half coupling that is M20 x 2.5 with a plug. This would imply that it is a metric pipe size. Is there metric pipe? I know that you can get fasteners in this size and pitch without a problem but I can't find anything for couplings?
thanks
Ken
Just wondering if anyone knew of a site where there was a good collection of nuts, bolts, and screw ANSI standards?
Such as threads/inch, tap drill size, dist. across flats & corners, thicknesses...
I haven't come across any good collections of them...
thanks
aero
