- Effect of Molecular Weight On Compressor Performance
Dear All, I have extensively studying the analysis of the impact of Molecular weight changes on fixed speed and variable speed compressors Can you provide your feedback on the below simplified summary: 1) Fixed Speed Compressor, fixed compression ratio, speed and head at every flow: a) With
- Pinned amp; Rolling support in Roof Truss (timber) - Eng-Tips
Can anybody explain in simple terms for a truss newbie What is the difference between designing a truss with two pinned supports and designing it with one pinned and one rolling?
- Please help clarify datum shift vs bonus tolerance | Eng-Tips
Then the datum shift is the difference between the actual size and the virtual condition size developed by the refinement tolerance If the same hole was a tertiary, the the shift is the difference between the actual size and the virtual condition size developed through the positional tolerance rather than the refinement
- Motor Starting Power amp; Power Factor | Eng-Tips
The starting power factor has nothing to do with with running load kW 0 36 sounds a little high, but the difference between assuming 0 2 and 0 36 should not be too significant You need to pick a NEMA starting code in the softwware that matches the actual starting current data for your motor
- Torque spec changes from nut to bolt head? - Eng-Tips
In a torque spec for a typical bolt, washer and nut arrangement, is the proper torque value affected whether it is applied to the bolt head as opposed to the nut? Thanks!
- NPSH vs. Pressure - Eng-Tips
Hi all, I am having trouble trying to distinguish the difference between NPSH and pressure I know that NPSHr is what you must have in order for the pump to not cavitate It is equal to: (static height) + (pressure within vessel) - (vapor pressure) - (pipe friction losses) For example
- Difference between surface contact mesh and mesh mating condition
I am using NX 7 5, my doubt is applying these contact mesh will it affect the weld mesh which are there in the contact region and if yes what will be the effect
- KW, KVA, KVAR relationship | Eng-Tips
The prime mover load produces the kW Changing the VARs produced doesn't affect the engine load Correcting the power factor could cause a reduction in kW due to less cable or transformer losses with the lower current, but it is a secondary effect A bigger kW change might be possible by changing the system voltage
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