COMPUTATIONAL AND EXPERIMENTAL STUDY OF THE THERMODYNAMIC EFFICIENCY OF HEAT PUMPS

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J. of Mech. Eng., 2016, vol. 19, no. 1, pp. 13-20

DOI:  https://doi.org/10.15407/pmach2016.01.013

Journal Journal of Mechanical Engineering
Publisher A. Podgorny Institute for Mechanical Engineering Problems
National Academy of Science of Ukraine
ISSN 0131-2928 (Print), 2411-0779 (Online)
Issue Vol. 19, no. 1, 2016 (March)
Pages 13–20

 

Authors

V. A. Tarasova,  A. Podgorny Institute of Mechanical Engineering Problems of NASU (2/10, Pozharsky Str., Kharkiv, 61046, Ukraine), e-mail: tarasova@ipmach.kharkov.ua, ORCID: 0000-0003-3252-7619

 

Abstract

A new technique for testing the thermodynamic efficiency of a heat pump is proposed, which allows us to estimate the energy intensity of the generated heat using a limited number of the parameters measured. Using the Gordon – Nju entropy-statistical approach, a semi-empirical thermodynamic model has been formed, which allows to take into account the real value of internal energy dissipation in a cycle and evaluate the efficiency of the heat pump operating at partial load. A software package has been developed for processing the results of monitoring the heat pump system for heat and cold supply of an administrative building in real time. According to the results of testing the VMN430L heat pump operation, it has been revealed that it operates in the partial load mode (80%). This leads to an increase in losses from cycle irreversibility by 7.3 ÷ 10% compared with the full load mode.

 

Keywords: heat pump, thermodynamic effectiveness, monitoring, exergy conversion coefficient

 

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Received 01 March 2016