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  1. Pulsater555

    Natural Gas Specific Heat Data Tables

    Hi pierreick, Unfortunetky I checked there. They have an impressive list of gases however all information is based on standard temperature and pressure.
  2. Pulsater555

    Natural Gas Specific Heat Data Tables

    Thank you georgeverghese! Perry Chem Engg Handbook has some great tables. Wish there was a way to get them in a simple excel format! I couldn't seem to find the API Technical Databook. Hopefully someone on this thread can add it for future references.
  3. Pulsater555

    Natural Gas Specific Heat Data Tables

    Hello All, I am currently working on a tool and I am looking for the individual specific Molar Heat Capacity MCp (Ideal-Gas State), Btu/(lb mol • °R) for compounds normally found in Natural Gas including (C1-C10), Nitrogen, Hydrogen, Water, CO2, etc. Most of the tables I have come across are...
  4. Pulsater555

    How to do a pulsation study for recip

    Hey Dev Ops, Your best bet is to look at API-618 and ISO 13631 (API11P). Both cover similar topics for reciprocating gas compression but they differ for speed and horsepower. These codes provide a great baseline as to how to size pulsation bottles and piping systems. Most companies have...
  5. Pulsater555

    Recip. API 618 - Maximum Allowable Pressure Drop & Mean Pressure

    Hello All, I have seen the term used "average mean absolute pressure" throughout API 618, 7.9.4.5.2 Design Criteria. Are they just referring to the mean (or average) pressure to be seen across a specific stage? Example below: Pressure in pisa, the numbers are arbitrary. Stage 1 Ps...
  6. Pulsater555

    Suction Control Valve in Compressors

    Hello SaraChem, Yes a suction pressure control valve (SPCV) does help with the ease of starting up a gas compressor. If your pipeline feeding the gas compressor will vary in pressures it would be recommended to include a suction pressure control valve. SPCV are also useful at start up...
  7. Pulsater555

    Recip Compression - API 618 vs ISO 13631(API 11P) - Pulsation Dampeners

    Hey All, I am curious as to everyone is sizing there pulsation bottles. To my understanding API 618 is for Medium to High Horsepower gas compressor while ISO 13631(API 11P) is for Low to Medium Horsepower gas compressors. From what I can tell, no one actually follows the calculations of...
  8. Pulsater555

    Boost Engine with a heat recovery system - Nat. Gas Compression

    Hemi is correct. The system will take the exhaust heat and transfer it to a glycol system which will then go through an expander generating power. The power would then be sent to a electric motor to add horse power back into the system. Alternatively, to reduce power lose the expander could be...
  9. Pulsater555

    Boost Engine with a heat recovery system - Nat. Gas Compression

    Hello All, I am currently looking at an application where we want to boost an engine to provide more horse power to a compressor. The engine type would either be a Waukesha or a CAT natural gas engine for compression applications, exp: 7044GSI or 3512. This application would only be used when...
  10. Pulsater555

    Recip. Comp. Pulsation Dampeners - Expanded Pipe Vs. Pressure Vessel

    Hello jmec87, Yes sir, the jurisdiction is Alberta. Section 2(2)J details though that the exemption does not apply to pressure piping or pulsation bottles. This exemption does not apply to items such as pulsation bottles, separators, intercoolers, aftercoolers or pressure piping (vent, drain...
  11. Pulsater555

    Recip. Comp. Pulsation Dampeners - Expanded Pipe Vs. Pressure Vessel

    I am trying to determine if I can use a expanded pipe compared to having to use a pressure vessel. I am having difficulties finding any exemptions in ASME SecVIII Div.1 and in my jurisdictional governing bodies requirements. What is the determining factor requiring the registration of a...

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