Course 4 LNG Thermodynamics Part 2 4 PDH

TEXAS COMPLIANCE PENDING:

Texas requires a class be reviewed by enough students to assign earned CPE credits.  This course is still new enough that we are obtaining the reviews needed.   We recommend Texas CPAs check back soon. This process is usually finished within a few weeks.

This learning is given in 3 parts. This is part 2.

• Part 1 was based on understanding thermodynamic concepts and the use of pressure enthalpy charts.
• Part 2 builds onto part 1 but uses thermodynamic software instead of pressure enthalpy charts for analysis and goes into additional depth.
• Part 3 builds on parts 1 and 2 to apply thermodynamics to understand air conditioning and refrigeration systems from ¼ hp size units to 300,000 hp size units.

This Part 2 course introduces the learner to the use of thermodynamic software in lieu of using charts for performing thermodynamic analyses. The use of such software is much more time efficient, accurate and flexible. Thermodynamic software allows the learner to dive deeper in their understanding of the field of thermodynamics. In this part we will build on the learning of Part 1 and expand our ability to deal with mixtures rather than solely the pure fluid of methane.

By the end of this course, the learner should understand:

• How to use thermodynamic software
  • This will include solving many problems, some like those from part 1
  • Application of the software for solving liquefying mixtures of natural gas
  • Understanding how thermodynamic software can show deviations from ideal gas solutions
• Applying thermodynamic software to plant operations including:
  • Analysis of in-tank and external LNG pumps
  • Producing graphs such as Tx diagrams for binary mixtures and Ph diagrams for multi-component mixtures
  • How and why recondensers work
  • Determining the horsepower requirements and heat added to fluids of LNG pumps, compressors, and cold blowers
  • The heat requirements of vaporizers
  • Temperature and power requirement changes as LNG and/or BOG mixture composition changes are made (e.g., nitrogen in BOG vs. pure methane in BOG)
  • An in-depth understanding of three stratification modes resulting in LNG rollovers
• Reinforcement exercises including analysis of:
  • Positive displacement compressors
  • BOG compressors with varied inlet pressures
  • Boiler feed water pumps
  • Recondensers
  • Flash output compositions
  • What happens when two fluids are mixed
  • Velocities downstream of a JT valve
  • Pressure and temperature changes downstream of a compressor due to fluid mixture composition changes
  • Relationship between height of liquid in LNG tank and BOG production.
  • BOG produced due to a change of LNG tank pressure.