Answered

  1. In a word or two describe the changes that occur, in sequence, as load increases on a cooling system
    which uses a thermostatic expansion
    valve:
    a. superheat at the sensing bulb
    b. sensing bulb pressure
    c. evaporator pressure
    d. spring pressure
    e. diaphragm position
    f. valve position
    g. refrigerant flow to evaporator
    h. superheat at the sensing bulb

Verified Answer :

GinnyAnswer

Final answer:

As load increases on a cooling system with a thermostatic expansion valve, various changes occur in sequence including adjustments in superheat, pressures, spring tension, diaphragm and valve position, and refrigerant flow.


Explanation:

As load increases on a cooling system utilizing a thermostatic expansion valve, the following changes occur in sequence:

  1. Superheat at the sensing bulb increases.
  2. Sensing bulb pressure rises.
  3. Evaporator pressure increases.
  4. Spring pressure adjusts.
  5. Diaphragm position changes.
  6. Valve position shifts.
  7. Refrigerant flow to the evaporator increases.
  8. Superheat at the sensing bulb rises again.

Learn more about Thermostatic expansion valve operation in cooling systems here:

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