If the chilled water temperature drops approximately 2.5-3°C below the control thermostat set point, what will happen?

When the chilled water temperature drops approximately 2.5-3°C below the control thermostat set point, it indicates that the cooling system is producing more cooling than required. In such a scenario, the correct response is for the system to manage its operation to prevent overcooling.

The compressor plays a central role in regulating the temperature of the chilled water. If the water temperature falls significantly below the desired set point, the control system will typically respond by shutting down the compressor. This action prevents further cooling and helps maintain the chilled water temperature within the bounds of the set point, ensuring that the system operates efficiently and avoids potential issues such as frost formation on evaporator coils or excessive wear and tear on components.

This strategy is essential in refrigeration systems because it allows for a balance between cooling output and set point demands, helping to achieve optimal performance.