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  1. spacebeer13

    Compressed air quick release couplings: how to choose

    Thanks for the replies. moltenmetal, i agree with entirely with you i'm talking with Parker and Staubli to find a solution an i will advise the client to use good quality products and always form the same brand. In relation to the other good practices, they already have them. the problem is...
  2. spacebeer13

    Compressed air quick release couplings: how to choose

    Hi, Thanks for the replies! So, i saw several suppliers and most of them have quick connectors for compressed air suitable until 16 bar. (My application is for 7 bar). On the other hand, i have for example Swagelock that have connectors until 200 our even 400 bar. So what you are suggesting is...
  3. spacebeer13

    Compressed air quick release couplings: how to choose

    Hi, I'm searching for a quick release coupling with minor leakages. In most of the industries that i know there are used always the same type of quick release couplings (i don't know the type name), but i have a case that the leakeges are quite big because there are many hand tools. So i am...
  4. spacebeer13

    Measuring DC motors...misterious values

    Dear Skogsgurra, I think you ar wright. It's not possible... Dear mikekilroy, The current measured was 140A vs 372A of the nameplate. So, 140/372 x 695 = 261,6 Nm therefore the Mechanical power should be = 261,6 x 1550/9550 = 42,5 kW > 39 kW (measured). So still we get a value for efficiency...
  5. spacebeer13

    Measuring DC motors...misterious values

    Thanks very much for the reply! Regarding the frequency that is the frequency of the electrig grid. Please see the attachment with the motor curve provided by the manufacturer.http://files.engineering.com/getfile.aspx?folder=45fb6f01-9ba4-498f-8ede-6c4afd317789&file=torque_speed_chart.jpg
  6. spacebeer13

    Measuring DC motors...misterious values

    Hi, I've performed some measurements in motors as i always do with a energy analyzer. My intention was to evaluate the efficiency of several DC motors in a factory. Some of them are of 78, 160 and 400 kW, but here i'm going to use the example of a 160 kW DC motor, with the following...
  7. spacebeer13

    Stack draught fluid calculations / design

    Hi, I would like to perform some fluid calculations for a stack design and i would like to hear some opinions about my own calculations. I've started from scrath, therefore as a start for this thread i would like you to comment my attachment with a simple natural convection situation, where i...
  8. spacebeer13

    Stress by percent (%) - color problem in EXP mode

    Hi there, Anyone have any ideas that can help me? Thanks
  9. spacebeer13

    Stress by percent (%) - color problem in EXP mode

    Very strange becaus i see them in the post... Here are the links though: 1st: http://i57.tinypic.com/2luq62s.jpg 2nd: http://i62.tinypic.com/sp96qq.jpg 3rd: http://i59.tinypic.com/rtjkwm.jpg
  10. spacebeer13

    Stress by percent (%) - color problem in EXP mode

    Hi, I'm struggling with something weired in CAESAR II: Here in this first image you can see de Stress by Percent (%) If you take a closer look at the bottom there is are 2 nodes (210 and 220) that distance from eachother 500mm. The Displacementes at node 220 were all specified as zero. The...

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