ESCO Air Conditioning Practice Exam 2025 – Complete Study Resource

Question: 1 / 400

The only way to minimize flash gas is by

Increasing compressor pressure

Minimizing flash gas is essential in an air conditioning system as it helps to ensure the efficiency of the system. Flash gas occurs when some of the liquid refrigerant flashes into vapor due to pressure drops in the system, which can reduce the system's cooling capacity.

The correct answer is increasing compressor pressure, as this helps to maintain high pressure in the system, which reduces the likelihood of refrigerant flashing into vapor. By increasing the compressor pressure, you can keep the refrigerant in a liquid state as it passes through the system, minimizing the amount of flash gas produced.

Reducing superheat, sub-cooling the liquid refrigerant entering the metering device closer to the evaporator temperature, and using a larger accumulator do not directly address the issue of minimizing flash gas in the same way that increasing compressor pressure does.

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Reducing superheat

Sub-cooling the liquid refrigerant entering the metering device closer to the evaporator temperature

Using a larger accumulator

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