Title: Avoidable thermodynamic inefficiencies evaluation of a sewage water source heat pump system

Authors: Aysegul Gungor Celik; Arif Hepbasli

Addresses: Department of Mechanical Engineering, Faculty of Hasan Ferdi Turgutlu Technology, Manisa Celal Bayar University, Manisa, Turkey ' Department of Energy Systems Engineering, Faculty of Engineering, Yasar University, 35100 Bornova, Izmir, Turkey

Abstract: The performance of a sewage water source heat pump system is assessed through conventional/enhanced exergy-based methods in this present study. The experimental data used in the analyses are based the cooling mode. According to the conventional-based results, the condenser has the lowest exergy efficiency. Beside this, the enhanced exergy-based analysis results show the sewage water heat exchanger should be considered as the most significant component as it has the highest avoidable exergy destruction rate in the whole system and takes the improvement priority. Based on the enhanced exergy analysis, 56% of the total exergy destruction belongs to the avoidable part.

Keywords: advanced exergy analysis; enhanced exergy analysis; sewage water source heat pump; SWSHP; conventional exergy analysis; waste heat.

DOI: 10.1504/IJEX.2023.130367

International Journal of Exergy, 2023 Vol.40 No.4, pp.414 - 428

Received: 05 Apr 2022
Received in revised form: 23 Sep 2022
Accepted: 24 Sep 2022
Published online: 18 Apr 2023 *

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