Heat Exchanger Effectiveness

What this topic covers

Why exchanger performance should be compared with the heat transfer theoretically available from the inlet streams.

Core thermal ideas

Effectiveness relates actual heat transfer to the maximum possible heat transfer under the same inlet conditions.

It is different from mechanical efficiency or energy efficiency of a whole cooling plant.

Changing flow rate or inlet temperature changes the reference condition, so comparisons require context.

System tradeoffs

Thermal duty and pressure drop interact: increasing velocity can improve heat transfer while increasing pumping demand.

What to monitor

Fouling, corrosion and mechanical integrity can reduce performance long before total failure.

Lifecycle perspective

Maintenance and inspection should use equipment-specific procedures and current pressure-equipment requirements.