THERMAL SCIENCE

International Scientific Journal

Dejan Ivezić

,

Marija M. Živković

,

Dimitrije J. Manić

,

Aleksandar Madžarević

,

Boban S. Pavlović

,

Dušan S. Danilović

EVALUATION OF THE EFFECTS OF WASTEWATER HEAT PUMP INTEGRATION INTO DISTRICT HEATING SYSTEMS BY SIMULATION

ABSTRACT
The integration of wastewater heat pumps (using purified water) in district heating systems is analyzed in this paper. The simulation procedure is proposed to analyze the impacts of stochasticity of purified water temperature and flow to heat pump integration and operation. The analysis includes calculation of the daily and seasonal coefficient of performance, as well as fossil fuel savings and CO2 emission reduction due to wastewater heat pump use. The proposed procedure is implemented for the case study in the city of Šabac (Serbia) and obtained results are discussed and evaluated. The historical data for two heating seasons was used for simulation. It was shown that the wastewater heat pump could provide 27-28% savings in fuel consumption, and 3.6-4.1% GHG emissions reduction, while the seasonal COP could be 4.2 - 4.3. Simulation based approach shows approximately 40% less savings of fuel consumption, compared to the approach based on the average values of heat pump input parameters.
KEYWORDS
wastewater, heat pump, district heating, simulation
PAPER SUBMITTED: 2022-08-13
PAPER REVISED: 2022-09-20
PAPER ACCEPTED: 2022-09-30
PUBLISHED ONLINE: 2022-11-12
DOI REFERENCE: https://doi.org/10.2298/TSCI220813168I
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2023, VOLUME 27, ISSUE Issue 3, PAGES [2443 - 2454]
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Evaluation of the effects of wastewater heat pump integration into district heating systems by simulation

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence