THERMAL SCIENCE

International Scientific Journal

Authors of this Paper

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Zoltan Pek

,

Arpad Nyers

,

József Nyers

DETERMINATION OF COP MAXIMUM OF COLD WATER LOOP OF HEAT PUMP HEATING SYSTEM BY MEANS OF NUMERICAL-GRAPHICAL OPTIMIZATION PROCEDURE

ABSTRACT
The paper presents the energy optimization of the cold water loop of the heat pump heating system using analytical-numerical procedure. The aim of the study is obtain the maximum COP of the heating system by optimum of the wall water mass-flow rate and well pump power. The objective function is the heating system’s COP. All components of the heating system: evaporator, condenser, compressor, circulation pump, and well pump are described by steady-state, lumped mathematical model. The model’s equations are coupled, non-linear, multivariable and algebraic, the solution is feasible using an iterative numerical method. The MATLAB’s program with Gauss elimination and Newton-linearization method is applied for solving the model. The obtained numerical data are presented in 3-D graphics. The optimum value of the cold-well water mass-flow rate is obtained from the graphics or by using a selection algorithm. The results of the study are the adequate mathematical model for energy optimization of the heating system, the numerical algorithm for solving the model and the ultimate goal to obtain the optimum of the power of well pump and compressor.
KEYWORDS
energy optimum, heat pump, COP of heating system, numerical procedure, well pump, compressor
PAPER SUBMITTED: 2020-01-31
PAPER REVISED: 2020-02-15
PAPER ACCEPTED: 2020-02-25
PUBLISHED ONLINE: 2020-03-08
DOI REFERENCE: https://doi.org/10.2298/TSCI200131104P
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2021, VOLUME 25, ISSUE Issue 6, PAGES [4257 - 4267]
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Determination of cop maximum of cold water loop of heat pump heating system by means of numerical-graphical optimization procedure

© 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