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  • Users: RFZC
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  1. RFZC

    LPG friction losses, free flow

    Hi How can I estimate the maximum flow in NPS 4" piping if we drain LPG from a pressure vessel to atmosphere using that piping? Actually, I need to calculate the maximun thrust at the end of the piping. I understand that if I use Bernoully, introducing friction losses, I can estimate the...
  2. RFZC

    Java + multiport serial card

    Hi We have a small visual basic application to collect data from controlers. PC has Windows XP Professional and has a multiport RS232 card. We have to replace the old application and we will develop the new one using Java. We understand that Java does not use Win32 Serial API. Has one of you...
  3. RFZC

    Java with multiserial card

    Hi We have a small visual basic application to collect data from controlers. PC has Windows XP Professional and has a multiport RS232 card. We have to replace the old application and we will develop the new one using Java. We understand that Java does not use Win32 Serial API. Has one of you...
  4. RFZC

    ANSI B73.1 / ANSI B73.1M

    I will appreciate your help on the following: Which are the difference between ANSI B73.1 and ANSI B73.1M?
  5. RFZC

    GERT

    I am looking for information about conditional diagramming method for activity sequencing like: Grapgical Evaluation and Review Technique (GERT) or System Dynamics I will appreciate any help you can give.
  6. RFZC

    GERT

    I am looking for information about conditional diagramming method for activity sequencing like: Grapgical Evaluation and Review Technique (GERT) or System Dynamics I will appreciate any help you can give.
  7. RFZC

    Nitrogen in LPG tank

    We have taken LPG's sample (vapor) from the top of the tank and we have found a significant value of nitrogen. 1 The presence of nitrogen can affect the conditions of storage (pressure/temperature)? 2 Do we have to purge it totally? 3 If yes, which is the best method? 4 Which is the best...
  8. RFZC

    Nitrogen in LPG Tank

    We have taken LPG's sample (vapor) from the top of the tank and we have found a significant value of nitrogen. 1 The presence of nitrogen can affect the conditions of storage (pressure/temperature)? 2 Do we have to purge it totally? 3 If yes, which is the best method? 4 Which is the best...
  9. RFZC

    Over pressure in piping

    A volume of liquid trapped in an enclosed piping system has the potential to expand with a corresponding rise in ambient temperature, How can I relieve that over pressure in LPG and gasoline pipings? Is a relieve valve the better solution?
  10. RFZC

    stratification time

    I will appreciate your advice about the following: If there is liquid petroleum gas (mixture of propane, butane, ...) stored in a pressurised tank (100psi, 20 Celsius), How can I estimate at what time the homogeneous mixture of lpg will turn to layers for every compounds with different density
  11. RFZC

    stratification of lpg

    I will appreciate your advice about the following: If there is liquid petroleum gas (mixture of propane, butane, ...) stored in a pressurised tank (100psi, 20 Celsius), How can I estimate at what time the homogeneous mixture of lpg will turn to layers for every compounds with different density

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