Which components are on the high-pressure side of a TXV A/C system?

Which components are on the high-pressure side of a TXV A/C system?

• A. 1/2 compressor; evaporator; accumulator; 1/2 TXV
• B. 1/2 compressor; condenser; receiver dryer; 1/2 TXV
• C. Condenser; evaporator; receiver dryer
• D. 1/2 compressor; condenser; evaporator; 1/2 TXV

Answer: (B)

In a TXV A/C system, the high-pressure side comprises everything after the compressor discharge up to the point just before the evaporator, including the high-pressure inlet of the expansion device. That means the high-pressure side includes the discharge portion of the compressor, the condenser, the receiver/drier, and the high-pressure side of the thermostatic expansion valve itself. The evaporator, by contrast, is on the low-pressure side after the expansion process. So the correct grouping includes the high-pressure portion of the compressor, the condenser, the receiver/drier, and the high-pressure side of the TXV. The evaporator belongs to the low-pressure side, and leaving out the receiver/drier or including the evaporator would place components on the wrong side of the system.

In a TXV A/C system, the high-pressure side comprises everything after the compressor discharge up to the point just before the evaporator, including the high-pressure inlet of the expansion device. That means the high-pressure side includes the discharge portion of the compressor, the condenser, the receiver/drier, and the high-pressure side of the thermostatic expansion valve itself. The evaporator, by contrast, is on the low-pressure side after the expansion process.

So the correct grouping includes the high-pressure portion of the compressor, the condenser, the receiver/drier, and the high-pressure side of the TXV. The evaporator belongs to the low-pressure side, and leaving out the receiver/drier or including the evaporator would place components on the wrong side of the system.