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The present study investigates the operation status of a user-side thermal facility where thermal energy is supplied from main Korean district heating system and distributed to many household spaces. On-site measurements are made on the operation conditions of a user-side thermal facility and then exergy analysis method is applied to the measurement results to determine the locations and the magnitudes of exergy loss/destructions. In addition, based on the exergy analysis results, overall exergy efficiency and heat exchanger effectiveness of the user-side thermal facility are calculated.

Investigation on the operation status of a user-side thermal facility of Korean district heating system by using exergy analysis method