Heat-Exchanger Efficiency Evaluation Based on Real-Time Determination of Exergy Efficiency as a Control Criterion.

An approach for evaluating heat-exchanger operating efficiency using the calculated exergy efficiency (EE) that allows heat-exchanger system elements with low heat-transfer efficiency to be located and their maintenance (cleaning) to be managed according to their condition was proposed. Measurements required for the EE calculation were recorded automatically from the Automatic Process Control System databases of the application. Real-time mathematical modeling of the current mode of the facility using a computer training complex provided additional data. [ABSTRACT FROM AUTHOR]