TY - JOUR
TI - Evaluation of the effects of wastewater heat pump integration into district heating systems by simulation
AU - Ivezić Dejan
AU - Živković Marija M
AU - Manić Dimitrije J
AU - Madžarević Aleksandar
AU - Pavlović Boban S
AU - Danilović Dušan S
JN - Thermal Science
PY - 2023
VL - 27
IS - 3
SP - 2443
EP - 2454
PT - Article
AB - 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.