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  1. REFINERYPROJECTS

    Nozzel Loads

    Piping designer keeps stresses in the pipe wall itself within established allowable limits, and ensures that end point reaction loads do not overload connected equipment nozzles, avoiding excessive equipment nozzle loads is important in all cases, this is especially true for piping systems...
  2. REFINERYPROJECTS

    Determining exactly equations for piping system

    You need develop your piping system curve against your pump curve to find the best efficiency point for you pump. The pressure at any point in a liquid can be thought of as being caused by a vertical column of the liquid which, due to its weight, exerts a pressure equal to the pressure at the...
  3. REFINERYPROJECTS

    Eta of motor & pump

    chrisflood, This might be what you have seen or looking for. Dank off Eta Pumps are Solar ETA Pumps An Eta pump are for solar water system, the applications for the Eta pump systems include: Farming and irrigation Cattle and livestock watering Remote village water systems Household potable...
  4. REFINERYPROJECTS

    Pump piping configuration

    Before answering your question, you need to look at you system (Piping arrangement and size, inlet pressure, discharge pressure, flow rate ... etc.) usually we expand the pipe gradually for example, from 2" to 4" to 6", to avoid pressure drop, you need to look at your complete piping system in...
  5. REFINERYPROJECTS

    Bolted Flange under bending

    It is easier to use software. However, regarding your case, 1. If bending moments on your flange due to pipeline thermal expansion,this load causes the bolt stresses to be over the allowable per Div. 1 Table UCS-23, then refer to Division 2, Appendix 4 Section 4-141 and it states that we can go...
  6. REFINERYPROJECTS

    Bolted Flange under bending

    It is easier to use software. However, regarding your case, 1. If bending moments on your flange due to pipeline thermal expansion,this load causes the bolt stresses to be over the allowable per Div. 1 Table UCS-23, then refer to Division 2, Appendix 4 Section 4-141 and it states that we can go...
  7. REFINERYPROJECTS

    NPSHR for pregressive cavity pumps

    No, It doesn't. API 676 FOR POSITIVE DISPLACEMENT ROTARY PUMPS Cavities are another name for a hole in a liquid, called bubble, so cavitation is all about bubbles forming and collapsing. Bubbles take up space so the capacity of our pump drops. Vapor pressure is about liquids boiling. If you...
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