Refrigeration Cycle Overview

Introduction

• Presenter: Craig Migliaccio from AC Service Tech.
• Topic: Basic refrigeration cycle.

Main Components

1. Compressor

   • Increases pressure.
   • Inputs: Low pressure, low temperature vapor.
   • Outputs: High pressure, high temperature vapor.

2. Condenser (Heat Exchanger)

   • Rejects heat from the building.
   • Process: Refrigerant enters as high pressure, high temperature vapor and undergoes a phase change (saturated state).
   • Outputs: High pressure, high temperature liquid.

3. Metering Device

   • Decreases pressure.
   • Inputs: High pressure, high temperature liquid.
   • Outputs: Low pressure, low temperature liquid.
   • Mechanism: Small opening reduces refrigerant pressure.

4. Evaporator (Heat Exchanger)

   • Absorbs heat from the building.
   • Inputs: Low pressure, low temperature liquid.
   • Process: Absorbs heat, causing a phase change.
   • Outputs: Low pressure, low temperature vapor.

Cycle Summary

• Refrigerant flows through the cycle:
  1. Low pressure, low temperature vapor enters the compressor.
  2. Turns into high pressure, high temperature vapor.
  3. Enters condenser, releases heat, and changes state to liquid.
  4. Enters metering device, pressure drops.
  5. Low pressure, low temperature liquid enters evaporator, absorbs heat, and changes to vapor.
  6. Cycle repeats with vapor entering the compressor again.

Additional Resources

• Book: "Refrigerant Charging and Service Procedures for Air Conditioning."
• More information available in the description section of the video.

Conclusion

• Encouragement to learn more about refrigeration cycles.
• Sign-off: "Hope you enjoyed yourself and we'll see you next time at EEC Service Tech Channel."