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Recent content by CH5OH

  1. CH5OH

    API Water Separator - Fabrication

    I am not sure if API certifies workshops it rather specifies design criteria
  2. CH5OH

    Center Centrifugal Compressor

    Why we need a seal oil system , the Mechanical Seal is it enough to do the sealant ? the rpm is to high to use mechanical seal options are gas seal or oil seal Why we keep it above the suction pressure not the discharge pressure? because normally a compressor is designed to have suction pressure...
  3. CH5OH

    GAS SEALS

    as opposed to an oil seal? if you have a N2 grid available then I would go for a gas seal (opex=N2 usage and maybe requirement for flare connection depending on procesgas pressure) oil seal might be a bit more capex intensive and maybe some opex for degassing oil equipment
  4. CH5OH

    Heat transfer efficiency vs. coolant mass flow rate

    it is not that easy: off coarse there is the basics: gas outside of tube,liquid inside the tube (gas opposes the biggest heat transfer resistance,therefore on outside of tube, biggest contact area) inside the tube: boundry layer (google suggestion):a film of liquid in contact with the tube...
  5. CH5OH

    fourier analysis

    i found below very educational on the topic of FFT: http://www.analog.com/en/education/education-library/scientist_engineers_guide.html
  6. CH5OH

    (Mechatronics) Matching Pinouts for IDC Connector between PLC and Motor Controller

    I dont think the problem lies with how to connect PLC from supplier A to SMC from supplier B build up your knowledge: 1 set up SMC with motor,power supply and laptop (with SMC programming software):build up some confidence in how the SMC works 2 figure out how the programming of the SMC works...
  7. CH5OH

    Operation of a pressure control valve if reverse flow is expected

    normal operation:upstream pressure increases,control valve opens (dumps the pressure) the pressure measurement only sees pressure,the valve operation only does what it is designed to do so if pressure rises as a result of pressure rise downstream, the valve opens
  8. CH5OH

    CSV Data Manipulation

    just write a little routine in VB for applications, available within the excel suite
  9. CH5OH

    Steam Turbine Efficiency calculator

    to calculate based on operating parameters:inlet pressure/temperature,outlet pressure/temperature,torque measurement,RPM,tensile strenght of shaft and its dimensions (to convert torque measurement to kW)steam tables/mollier diagram, understanding of basic thermodynamic cycles to calculate based...
  10. CH5OH

    Pumping solutions for chocolate syrup

    I would go with the little inch solution and either control the number of strokes or strokelength (pneumatic actuator,4 2 control valve,lineair position electric feedback,cheap PLC)
  11. CH5OH

    plan 53b and 53c difference?

    above certain pressure N2 will dissolve in barrier liquid and might cause foaming, therefore separation of barrier gas and barrier liquid by means of bladder/piston
  12. CH5OH

    API plan 53A

    possible causes: hanging of seal (can be observed if seal is renewed) investigate old seal, look for carbon deposits is seal buffer tank connected to N2 net? any process parameters available (pressure buffer tank constant?)
  13. CH5OH

    Large reciprocating engine failures

    failure modes (I came across): design and/or initial installation errors:mitigation -engine build for wrong rotation direction:timing correction on counter ballast weights -engine oversea shipped with dehumidifier fans wrongly connected:removed internal corrosion/partly repaint -water cooled...
  14. CH5OH

    Lube Oil Cooler, unecessary?

    since you running back en from a storage tank, adding a cooler to the filtration unit makes it heat neutral.I am not familiar with your type of filtration unit, does it boil out water under vacuum (vacuum chamber/ejector)?if so you need to heat up the oil to about 80degC, storing oil this hot...
  15. CH5OH

    Adding Strainer

    some plate heat exchangers have build in buckets (behind flanges opposite of pipe connections) an upstream filter wouldn't harm, i guess...
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