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Basic Refrigeration System

Basic Refrigeration System. 4 Component Flow Diagram. The High Side. Thermal Expansion Valve. HT HP SCL. HT HP S.M. Condenser. HT HP SHV. Discharge Service Valve. Compressor. Legend HT HP SHV HT HP S.M. HT HP SCL. The High Side. The Low Side. Equalization Line.

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Basic Refrigeration System

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  1. Basic Refrigeration System 4 Component Flow Diagram

  2. The High Side

  3. Thermal Expansion Valve HT HP SCL HT HP S.M. Condenser HT HP SHV Discharge Service Valve Compressor Legend HT HP SHV HT HP S.M. HT HP SCL The High Side

  4. The Low Side

  5. Equalization Line Thermal Expansion Valve Flash Gas LT LP S.M. Evaporator TXV Bulb LT LP SHV Compressor Suction Service Valve Legend LT LP S.M. LT LP SHV The Low Side

  6. The System

  7. High Side Conditioned Space Ambient Air Return Air Supply Air Low Side

  8. System Pressures

  9. R-134a Saturation Temp. = 124° F. You have a discharge Pressure of 182.00 PSIG. What do you know about the refrigerant?

  10. R-134a Saturation Temp. = 114° F. Temp. Taken in this area! HT HP SHV Superheated by 6° F. You have a Discharge Pressure of 156.10 PSIG. You find a temperature on the high side of 120° F. What do you know about the refrigerant?

  11. R-134a HT HP SCL Sub-cooled by 10° F. Temp. Taken in this area! Saturation Temp. = 120° F. You have a Discharge Pressure of 171.30 PSIG. You find a temperature on the high side of 110° F. What do you know about the refrigerant?

  12. R-134a LT LP S.M. Saturation Temp. = -2° F. You have a Suction Pressure of 5.50 PSIG. What do we know about the refrigerant leaving the TXV?

  13. R-134a Saturation Temp. = -2° F. LT LP SHV Superheated by 7° F. You have a Suction Pressure of 5.50 PSIG. You find a temperature at the TXV Bulb of 5.0° F. What do you know about the refrigerant?

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