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The sensing bulb of the thermostatic expansion valve is located at the
  • a)
    the exit of the evaporator
  • b)
    the inlet of the evaporator
  • c)
    the exit of the condenser
  • d)
    the inlet of the condenser
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
The sensing bulb of the thermostatic expansion valve is located at th...
The thermostatic expansion valve consists of a needle valve and a seat, a metallic diaphragm, spring, and an adjusting screw. In addition to this, it has a feeler or thermal bulb mounted on the suction line near the evaporator coil outlet. The feeler bulb is partly filled with the same liquid refrigerant as used in the refrigeration system.
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The sensing bulb of the thermostatic expansion valve is located at th...
Location of Sensing Bulb in Thermostatic Expansion Valve

Introduction:
The thermostatic expansion valve is an essential component of the refrigeration system which regulates the flow of refrigerant to the evaporator. It maintains the evaporator's superheat temperature at a constant level to ensure efficient operation of the system.

Sensing Bulb:
The sensing bulb is a small tube that contains a refrigerant charge and is attached to the inlet or outlet of the evaporator. It senses the temperature of the refrigerant leaving the evaporator and regulates the flow of refrigerant accordingly.

Location of Sensing Bulb:
The location of the sensing bulb in the thermostatic expansion valve is crucial for efficient operation of the refrigeration system. The correct location of the sensing bulb ensures that the valve operates according to the evaporator's actual superheat temperature.

The correct answer to the question is option 'A' - the sensing bulb of the thermostatic expansion valve is located at the exit of the evaporator. This location allows the sensing bulb to sense the temperature of the refrigerant leaving the evaporator, which is the most accurate representation of the evaporator's superheat temperature.

If the sensing bulb were located at the inlet of the evaporator, it would measure the temperature of the refrigerant entering the evaporator, which may not accurately reflect the actual superheat temperature of the evaporator.

Therefore, it is essential to ensure that the sensing bulb is located at the exit of the evaporator to ensure efficient operation of the thermostatic expansion valve and the refrigeration system as a whole.
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The sensing bulb of the thermostatic expansion valve is located at thea)the exit of the evaporatorb)the inlet of the evaporatorc)the exit of the condenserd)the inlet of the condenserCorrect answer is option 'A'. Can you explain this answer?
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