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  1. NeilSF

    Sparking from Thermally Sprayed Aluminium Flanges.

    Thankyou for your replies. A thermite reaction is considered the most likely cause - but there are some contraindications. 1. This was the first time the joint had been split since construction (3 years ago) and there was little or no visible evidence of rust. 2. Thermite reactions, as my...
  2. NeilSF

    Sparking from Thermally Sprayed Aluminium Flanges.

    Has anyone heard of the following occurance: Burning embers dropping from bolts upon on breaking of flanges. Rough details are as follows. Vessel side flange coated with thermally sprayed Aluminium Pipe flange uncoated carbon steel. Molycote 1000 grease Embers smelling of 'fireworks' were...
  3. NeilSF

    1st and 2nd Stage Delivery temps equal?

    Am I right in thinking that in a two stage recip compressor, each cylinder should have the same compression ratio, do an equal amount of work, and that the delivery temperature from each cylinder should be the same? I have just been speaking with a tech who's said that this is not the case...
  4. NeilSF

    Heat transfer coefficient V flow rate in heat exchangers

    I am trying to determine why the cooling circuit for our air compressors is not sufficient, and if there is a way of optimising it. We have a fin fan cooler, cooling the cooling water circuit. I wish to model the heat transfer in the system at different cooling water flow rates. I suspect...
  5. NeilSF

    Condition monitoring of Recip Air Compressors

    Thankyou all for your replies regarding the condtion monitoring of recip compressors. Now can I venture another querie? I am trying to establish the best way to determine the running condition of each of our 4 compressors. We could carry out a full test involving flow rate measurement, power...
  6. NeilSF

    Condition monitoring of Recip Air Compressors

    All, thankyou very much for your compreshensive replies. I shall let you know how I get on. Best regards, Neil.
  7. NeilSF

    Screw Compressor Manufacturers

    We have have an Atlas Copco screw compressor on our rig.
  8. NeilSF

    Condition monitoring of Recip Air Compressors

    I have been tasked to come up with a plan for the maintenance our compressed air system. I was wondering if anyone is aware of a good condition monitoring regime for recip air compressors. I'm interested in the state of the cylinders and of the pistons. Two ideas are listed below. -max...

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