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Recent content by JamieMassie

  1. JamieMassie

    temperature drop across regulator

    it is a single stage Tescom 1200 series Dome Loaded Regulator. Flowrate about 70cubic metres/min (at 1 atm) Jamie
  2. JamieMassie

    temperature drop across regulator

    starting temperature will be 0deg C. Before asking the question I did the T1/T2 = (P2/P1)^(1-k)/k calc giving me T2=113K. When colleagues expressed disbelief that it would be so cold, I had a re-think and realised that isentropic expansion was probably not the correct process for this. I...
  3. JamieMassie

    temperature drop across regulator

    I am struggling trying to calculate the temperature of the outlet air from a regulator which is reducing from 350 bar to 17 bar. I have read a long thread from this forum on a related subject but can't apply it to my problem. Can anyone help. thanks Jamie
  4. JamieMassie

    density of gas mixtures

    Hi I need to calculate the density of a gas mixture (60% oxygen/40% nitrogen) 20 deg C, 1 ata. Is it as simple as using the densities of the individual gases and the proportions or are there other effects to take into account. thanks Jamie
  5. JamieMassie

    aluminium cooling fins

    thanks, I may well reduce the thickness J.
  6. JamieMassie

    aluminium cooling fins

    Hello how will 50 microns of hard black anodising affect the performance of aluminium cooling fins in air thanks

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