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

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

• A. 1/2 compressor; evaporator; 1/2 TXV
• B. 1/2 compressor; condenser; evaporator
• C. Evaporator; accumulator; 1/2 TXV
• D. 1/2 compressor; evaporator; accumulator

Answer: (A)

The low-pressure side consists of the parts that handle refrigerant after it has been throttled and is returning to the compressor. In a TXV system, the refrigerant enters the evaporator at low pressure, absorbs heat, and then returns as low-pressure vapor to the compressor suction. The portion of the compressor that draws this low-pressure gas is part of the low side, the evaporator itself is the core low-pressure heat absorber, and the thermostatic expansion valve sits between the high-pressure side and the low-pressure side; the portion of the valve after the restriction is considered on the low side. So the components that operate at low pressure together are the suction-side portion of the compressor, the evaporator, and the low-pressure portion of the TXV.

The low-pressure side consists of the parts that handle refrigerant after it has been throttled and is returning to the compressor. In a TXV system, the refrigerant enters the evaporator at low pressure, absorbs heat, and then returns as low-pressure vapor to the compressor suction. The portion of the compressor that draws this low-pressure gas is part of the low side, the evaporator itself is the core low-pressure heat absorber, and the thermostatic expansion valve sits between the high-pressure side and the low-pressure side; the portion of the valve after the restriction is considered on the low side. So the components that operate at low pressure together are the suction-side portion of the compressor, the evaporator, and the low-pressure portion of the TXV.