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Understanding R-134a Refrigerant in HVAC Systems

Discover key information about R-134a refrigerant in HVAC systems based on various pressure and temperature readings. Learn about saturation temperatures, superheating, sub-cooling, and system pressures.

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Understanding R-134a Refrigerant in HVAC Systems

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  1. System Pressures

  2. R-134a Saturation Temp. = 51.1° C. You have a discharge Pressure of 12.56 BARS. What do you know about the refrigerant?

  3. R-134a Saturation Temp. = 45.6° C. Temp. Taken in this area! HT HP SHV Superheated by 3.3° C. You have a Discharge Pressure of 10.77 BARS. You find a temperature on the high side of 48.9° C. What do you know about the refrigerant?

  4. R-134a HT HP SCL Sub-cooled by 5.6° C. Temp. Taken in this area! Saturation Temp. = 48.9° C. You have a Discharge Pressure of 11.82 BARS. You find a temperature on the high side of 43.3° C. What do you know about the refrigerant?

  5. R-134a LT LP S.M. Saturation Temp. = 5.6° C. You have a Suction Pressure of 2.55 BARS. What do we know about the refrigerant leaving the TXV?

  6. R-134a Saturation Temp. = 4.4° C. LT LP SHV Superheated by 4.5° C. You have a Suction Pressure of 2.42 BARS. You find a temperature at the TXV Bulb of 8.9° C. What do you know about the refrigerant?

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