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Recent content by seungwon2

  1. seungwon2

    Hydrogen Reciprocating Compressor Flow Rate

    another attachhttp://files.engineering.com/getfile.aspx?folder=5b6a3026-eed3-4257-bc94-e6948e15f01c&file=PR-D2001_OPERATING_LIMITS.TIF
  2. seungwon2

    Hydrogen Reciprocating Compressor Flow Rate

    I attach operating limit and inlet line orifice calculation sheet for this compressors. I know N2 purge and circulation is needed during startup and commissioning period. My concern is for the operation of compressor with n2 at rated flow of h2, it may cause a problem on the...
  3. seungwon2

    Hydrogen Reciprocating Compressor Flow Rate

    When we start H2 reciprocating compressor with N2 gas, manufacturer's manual shows reduced operating flow limit (8,450 Nm2/h) compared to rated hydrogen capacity(49,500 Nm3/h) for 1st stage. If the compressor is operated with the same rated flow as H2 gas, what problem will happen?
  4. seungwon2

    Total Dynamic Suction Lift or Head

    When calculating head of the system, I want to know the exact meaning of '+' or '-' for velocity head and friction head. Please kindly help me. DSL = Static suction lift - velocity head at suction + total friction head in suction line DSH = Static suction head + velocity head at pump suction...
  5. seungwon2

    Piston Transmitter

    I'm going to change conventional barrier fluid reservoir(API PLAN 53A) with piston transmitter(PLAN 53C)for Hydraulic Power Recovery Turbine seals. Stuffing box pressure is 840psig and reservoir pressure rating is 3000# as per HPRT vapor pressure of 2759psig. Vendor designed the piston...
  6. seungwon2

    Seal Cooler

    There are some troubles in seal oil cooler with cracks. It would be appreciated if you kindly let me know of the following; 1)During the tube bending process, what kind of method is used? - hand bending or CNC bending machine or others - any heat is applied or cold work is done 2)About...
  7. seungwon2

    Balancing Drum

    10 impellers were installed at the beginning, but added last impeller due to head requirement. Motor was originally selected on the basis of 10 impellers. I wonder the balancing drum was designed for 10 or 11 ?
  8. seungwon2

    Balancing Drum

    A 11th stage pump is running with 10th impellers. In case of adding a last stage impeller, am I have to change the balancing drum ? Thanks in advance.
  9. seungwon2

    Parallel Operation of Multistage Barrel Pumps

    I'm considering running two multistage barrel pumps in parallel. They are driven by motors(3000hp each) and one motor is connected with power recovery turbine. Fluid : hydrocarbon specific gravity : 0.876, temp.:97 'C rated capacity : 219.8m3/hr diff. head : 2490m (suc. press.:6.4kg/cm2g)...
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