Features of modeling a highly efficient multistage vapor compression heat pump unit
| Autor: | Yuri A. Antipov, Irina I. Shatalova, Kirill V. Shkarin, Mikhail V. Lapin, Dmitry A. Sokolov, Artem O. Grinin, Kirill P. Toptygin |
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| Jazyk: | English<br />Russian |
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | RUDN Journal of Engineering Research, Vol 22, Iss 4, Pp 339-347 (2021) |
| Druh dokumentu: | article |
| ISSN: | 2312-8143 2312-8151 |
| DOI: | 10.22363/2312-8143-2021-22-4-339-347 |
| Popis: | The increase in the cost of fuel and energy resource and the deterioration of the environment from the combustion of traditional fossil fuel, have led to a great interest in energy-saving technology by using secondary energy resources in the thermal energy of industrial, housing and communal services using heat pump units in Russia and abroad. This paper analyzes the well-known two-stage heat pump units, and reveals their advantages in comparison with single-stage. The modeling of a highly efficient multistage vapor compression heat pump unit is proposed. Moreover, a method for calculating a multistage heat pump unit with a high coefficient of performance is presented. In addition, an example of calculating the thermodynamic cycle of a four-stage heat pump unit is presented. The influence of the number of stages on the increase in coefficient of performance in relation to a single-stage heat pump unit, the effect of the temperature difference between the temperature of the high-potential heat source and the temperature of the low-potential heat source on the coefficient of performance were analyzed. In addition, the influence of the initial value of the temperature of the high-potential heat source before heating during the course in the heat pump unit on the value of coefficient of performance for a different number of stages is analyzed under the condition of a constant difference between the heating temperature of the high-potential heat source at the outlet of the heat pump unit and the temperature of the low-potential heat source. |
| Databáze: | Directory of Open Access Journals |
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