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Recent content by referdude
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Screw compressor readings.
Three different analysis using two different analists show an increasing amount of noise. However, yesterday we found the softfoot on the screw to be out of spec. Maybe rectifying this will help. Also, we now have two expert opinions that the noise found in this machine is very much within...- referdude
- Post #6
- Forum: Mechanical Acoustics/Vibration engineering
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Screw compressor readings.
The analyst is not overly familiar with screw compressors. However, this ones sister machine (which has many more hours on than this one) can be used for comparison purposes. If you would like to see the complete analysis on both machines I would be happy to e-mail both to you.- referdude
- Post #3
- Forum: Mechanical Acoustics/Vibration engineering
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Screw compressor readings.
MYCOM 300 h.p. (R 717) screw compressor vibration analysis report: "The compressor is showing indications of some internal looseness and possibly some internal misalignment. The readings are showing a 4th order harmonic throughout the spectrums with the time waveform showing 4 distinct...- referdude
- Thread
- Replies: 6
- Forum: Mechanical Acoustics/Vibration engineering
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Energy/ Building Management companies
Our facility has a Trane Tracer Summit system for the HVAC and light mask scheduling. It seems to work quitye well. Our freezer Refrigeration system is controlled by an Allen Bradley unit. Some special energy saving devices that are integrated are Variable Frequency Drives on screw compressors...- referdude
- Post #6
- Forum: HVAC/R engineering
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Pipe schedule for H.P. Liquid NH3
We are well aware the OSHA requirements involved with a tier 2 installation. Our questions result from a disagreement between us as operators and the installing contractor regarding the physical attatchment of the piping (up to 8 inch dia.) to the building structure (rigid stand-offs welded to...- referdude
- Post #5
- Forum: ASME (mechanical) Code Issues
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Pipe schedule for H.P. Liquid NH3
What schedule wall thickness is required for 2 inch H.P. NH3 piping. Also, what methods of hanging or attatching large dia. pipe to the building structure are considered safe or are industry standard for an area that does experience some moderate seismic activity?- referdude
- Thread
- Replies: 4
- Forum: ASME (mechanical) Code Issues
