CO2 Technician Competencies

CO2 Technician Course Competencies

GCAP’s CO2 Technician
Refrigeration Competencies

Prerequisite: Ammonia Operator I course and/or 2 years experienced industrial refrigeration background.

All of this material is covered or introduced to the
student at our seminar with running CO2/Cascade equipment in the lab.

Students will also sit for a final exam.  Students will charge the CO2 system as well.

CO2 Safety

  • MSDS
  • CO2 Latent Heat of fusion  Video
  • Sub-Critical
  • Trans-Critical
  • Hydrostatic Expansion
  • Pressure
  • Sublimation
  • Pressure Drop
  • Relief Valves
  • Relief Valve Headers
  • Charging CO2 Systems
  • CO2 Detection
  • Ventilation

Understanding Industrial Refrigeration from the Inside Out

GCAP's Book

June 2, 2014 GCAP revealed their new Ammonia Operator I Book titled “Understanding Industrial Refrigeration from the Inside Out“.  Authors Randy Williams, and Jeremy Williams

This is a 14 Chapter text of what an operator/technician needs to knows learning how to the see the refrigeration from the inside out.  The book has been copyrighted, and filed with the Library of Congress for a specific ISBN number.  If you have taken GCAP PSM/RMP course and seen the quality of that book, this will be of equal.  For a full detailed outline of the book Click Here.

  • Chapter 1: Getting Started

  • Chapter 2: Process Safety Management

  • Chapter 3: What You Need To Know About Ammonia

  • Chapter 4: Basic Electricity

  • Chapter 5: Foundation

  • Chapter 6: Heat Transfer

  • Chapter 7: Seeing Refrigeration From The Inside Out

  • Chapter 8: Four Steps Of Refrigeration

  • Chapter 9: Liquid Feeds

  • Chapter 10: Compressor Applications

  • Chapter 11: Condensers

  • Chapter 12: Different Systems

  • Chapter 13: Practice Exam

  • Chapter 14: Common Acronyms and Definitions

Module 1 Thermodynamic Topics

  • The role of the throttling valve on transcritical cycle
  • Methods for improving the energy efficiency of carbon dioxide transcritical Cycles

Module 2 Industrial Systems

  • General system design – limits and possibilities
    • Pressure
    • System types
    • Compressor size and efficiency
    • Pressure loss and size of piping
    • Evaporators
    • Defrosting
    • Cascade coolers
    • Determination of the cascade temperature
    • Standstill cooling
    • Power drop-out and emergency stop
    • Pumps
    • Alternative to centrifugal pumps
    • The thermal pump system
    • Energy Consumption of thermal pumping systems
    • Pollution with R717
    • Pollution with water
    • Increased suction pressure during pull down or batch processes
  • Industrial CO2 Refrigeration system
    • CO2/R717 cascade system
    • High Temperature stage: the R717 system
    • Low Temperature stage: the CO2 system
    • CO2 Compressor
    • Control
    • Cascade  cooler
    • Expansion valve, high pressure control and high pressure receiver
    • Pump Separator
    • Suction Line
    • Hot gas defrost mode, gas generator and hot gas bypass
    • Valves
    • Leaks
    • Moisture
    • Operation at off-design conditions
    • Liquid drain at hot gas defrost
  • Ice-cream freezer
  • Plate Freezer
  • Transcritical plant design: Applied from supermarket refrigeration
    • Type of system
    • High pressure compressor
    • Gas cooler
    • High temperature heat exchanger
    • High temperature expansion valve
    • Separator/Receiver
    • Gas bypass valve
    • Evaporators and expansion valves
    • Low temperature heat exchangers
    • Low pressure compressor
    • Oil return system
    • Silencing
  • Large Transcritical Systems

Module 3: Commercial Refrigeration

  • Introduction
  • CO2 system solutions in supermarket refrigeration
  • Computer modeling simulations
  • Laboratory experimental evaluations
  • Field Measurements
  • Safety issues related to CO2 in supermarket refrigeration

Module 4: CO2/R744 Mobile Air-Conditioning

Module 5: CO2 Heat Pumps

  • Introduction
  • Thermodynamic Efficiency
  • Energy Efficiency for the CO2 Heat Pump
  • Heat Pump Water Heaters
  • Integrated Systems
  • Space Heating and Cooling
  • Heat Pump Dryers

Module 6: Safety and Leakages Control

  • The importance of Guidelines
  • Application of protection devices
  • Leakage control detector

Module 7: Drivers for Implementation of CO2 Technology

Module 8: Components

  • Compressors
    • Compressor Available on the market
    • Reciprocating compressors
    • Rotary compressors
    • Automotive compressors
    • Lubricants for CO2 Compressors
  • Heat Exchangers
    • Finned tube heat exchangers
    • Basic heat transfer characteristic air side
    • Fundamentals on combined heat and mass transfer in wet surface air coolers
    • Finned tube heat exchangers using round tubes
    • Enhancement techniques
    • Finned tube heat exchanger using flat tubes with internal Minichannels
    • Plate Heat exchangers
    • Tube-in-tube heat exchangers
    • Special heat exchangers
    • Shell and plate heat exchangers
    • Heat exchangers for tap water
  • Prediction of pressure drop and heat transfer of carbon dioxide inside channels
    • Carbon dioxide thermo physical properties
    • In tube heat exchanger
    • Carbon dioxide pressure drop during flow
  • Heat Exchanger design

Contact us for more info

Garden City Ammonia Program
2405 E. Fulton Plaza
Garden City , KS 67846
620-271-0484 FAX

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