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Refrigeration Unit Operation

Refrigeration Unit Operation

3 days
EMT/GRFRIG-E
Sessions
This course is not scheduled.
Who should attend?

Audience

    • Engineers, technicians, maintenance staff involved in refrigeration unit operation in process plants.

Level

  • Proficiency
  • This course provides a clear understanding of cooling system technology, performance and operating issues.
Learning Objectives
  • Upon completion of the course, participants will be able to:
  • explain the technology and operating principles of cooling systems,
  • analyze the technical solutions implemented for the installation of cooling systems,
  • participate in a troubleshooting analysis.
Course Content

COOLING CYCLE & GAS COMPRESSION

0.5 day

  • Liquid-vapor balance; enthalpy diagrams. Liquid coolant properties (R717, CO2, etc.).
  • Basic cooling cycle, evolution on the enthalpy diagram. Gas compression in an actual compressor: temperature, pressure and enthalpy changes. Examples of different cooling cycles integrated within specific process units: chilled water, cryogenic storage, etc.

HEAT TRANSFER & COMPRESSORS

1.25 days

  • Heat transfer efficiency; consequence to operation costs. Technology.
  • Typical condenser and vaporizer designs, related operation constraints. Troubleshooting.
  • Reciprocating - Screw and centrifugal compressors.
  • Operating conditions; flow control; power control.
  • Compressor descriptions; oil and seal technologies; oil separators.
  • Oil properties, selection criteria, viscosity. Troubleshooting.

REFRIGERATION UNIT CONTROL

0.5 day

  • Pressure, level, flow and temperature controls. Internal and external disturbances.
  • Adaptation of the refrigeration cycle on the enthalpy diagram. Automatic and manual adjustments for different process requirements.

ON LINE MONITORING & TROUBLESHOOTING - HVAC SYSTEM

0.75 day

  • Start-up and shutdown. Monitoring: temperatures, ∆T, pressures, oil carry over, oil quality, exchanger fouling, leakage, air entrance, air purge, moisture problem.
  • Troubleshooting studies. HVAC system equipment and operation features - International standards.
  • Natural or forced ventilation, air handling equipment: humidity control, filtration and cleaning.
  • Heating or cooling: heat pump operation with reverse cooling cycle and defrost control.
Ways & Means
  • Use of participants' experience and teamwork.
  • Course material and case studies based on actual examples from the industry.