14. ACR-104 UNIT 24 REVIEW QUESTIONS

The needle and seat of a TXV are normally made of         .

• stainless steel

• glass

• aluminum

• copper

Which is not a pressure or force acting on a TXV diaphragm?

• Head pressure

• Evaporator pressure

• Spring pressure

• Bulb pressure

The TXV tries to maintain a constant         in the evaporator.

• freeze

• superheat

• mid-range temperature

• sub-cooling

The bulb of the TXV is mounted on the

• compressor inlet.

• compressor outlet.

• evaporator inlet.

• evaporator outlet.

The four types of TXV bulb charges are:

• Liquid, vapor, ester, and mineral

• Vapor, vapor cross, oil, and oil cross

• Liquid, vapor, liquid cross, vapor cross

• External, internal, balanced port, and electronic

The TXV responds to an increased heat load by

• decreasing refrigerant flow.

• keeping refrigerant flow constant.

• increasing refrigerant flow.

• not reacting to changing heat loads.

Factors that can affect the capacity of a TXV are the evaporator temperature, pressure drop across the valve, and temperature of liquid entering the valve.

• True

• False