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Air Treatment School Refrigerated Dryer Training

Presenting. Air Treatment School Refrigerated Dryer Training. REFRIGERATION THEORY. What is Refrigeration?. Refrigeration is the process of moving heat energy from a location where it is not wanted to a location where it does not matter. REFRIGERATION THEORY. Heat.

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Air Treatment School Refrigerated Dryer Training

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  1. Presenting. . . Air Treatment School Refrigerated Dryer Training

  2. REFRIGERATION THEORY What is Refrigeration? Refrigeration is the process of moving heat energy from a location where it is not wanted to a location where it does not matter.

  3. REFRIGERATION THEORY Heat • Or “heat energy” is the amount or quantity of heat energy something contains. • Measured in BTUs. • A BTU (British Thermal Unit) is the amount of heat needed to change the temperature of one pound of water one degree Fahrenheit. • Ton of Refrigeration = 12,000 BTU/H

  4. REFRIGERATION THEORY Cold There is no such thing as cold There are only different amounts of heat We cannot “generate” cold, We can only “move” heat

  5. REFRIGERATION THEORY Heat will only flow from a higher concentration to a lower concentration. Heat transfer is always from hot to cold

  6. REFRIGERATION THEORY Types of Heat Sensible: When heat energy is transferred from one object to another causing a change in temperature. Latent: When heat energy is transferred from one object to another causing a change of state

  7. REFRIGERATION THEORY

  8. BASIC REFRIGERATION Vapor Compression Refrigeration Cycle Evaporator Metering Device Compressor Condenser

  9. BASIC REFRIGERATION Vapor Compression Refrigeration Cycle Refrigerant Flow

  10. BASIC REFRIGERATION Vapor Compression Refrigeration Cycle Heat Flow

  11. BASIC REFRIGERATION Vapor Compression Refrigeration Cycle Low Side Suction Side High Side Discharge Side

  12. BASIC REFRIGERATION Vapor Compression Refrigeration Cycle Liquid Side Vapor Side

  13. BASIC REFRIGERATION Vapor Compression Refrigeration Cycle Superheat Subcooling

  14. BASIC REFRIGERATION Superheat: • Refers to a VAPOR heated above saturation • Subcooling: • Refers to a LIQUID cooled below saturation • Saturation: • When liquid and vapor refrigerant are in the same place at the same time. (100% RH)

  15. BASIC REFRIGERATION

  16. REFRIGERATED DRYER Basic Dryer Compressed air

  17. REFRIGERATED DRYER Hot Gas Bypass Compressed air Hot Gas Bypass Valve Refrigerant Flow

  18. REFRIGERATED DRYER De-Superheating Valve Compressed air De-Superheating Valve Hot Gas Bypass Valve Refrigerant Flow

  19. REFRIGERATED DRYER Pump Down System Low Pressure Control Solenoid Valve Hot Gas Bypass Valve With Solenoid

  20. REFRIGERATED DRYER Accumulator/Receiver

  21. REFRIGERATED DRYER Refrigerated Dryer Temperature Testing 1 - Compressor inlet 2 - Compressor outlet 3 – Condenser outlet 4 –Filter/Dryer 5 –TXV 6 –De-Superheating Valve 7 – HGBV 8 – Bypass Tie-in 8 1 7 5 6 2 4 3

  22. Refrigerated Dryer Temperature Testing 1 - Compressor inlet 2 - Compressor outlet 3 – Condenser outlet 4 –Filter/Dryer 5 –TXV 6 –De-Superheating Valve 7 – HGBV 8 – Bypass Tie-in 8 1 6 7 5 2 4 3

  23. REFRIGERATED DRYER HPRP400

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