Answer :
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:
- Superheat at the sensing bulb increases.
- Sensing bulb pressure rises.
- Evaporator pressure increases.
- Spring pressure adjusts.
- Diaphragm position changes.
- Valve position shifts.
- Refrigerant flow to the evaporator increases.
- Superheat at the sensing bulb rises again.
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