Parameters of a cascade two-stage air-to-water heat pump at low ambient temperature

Redko, Аndriy; Ujma, Adam; Pavlovskyi, Serhii; Redko, Ihor; Gvozdetskii, Oleksandr; Chaika, Yurii; Borodai, Dmytro

doi:10.17512/bozpe.2023.12.15

Abstract

The results of the numerical calculation of the thermodynamic parameters of a cascade (two-stage) air-to-water heat pump at low atmospheric air temperatures are presented. A Freon R407c is used in the first circuit and a R152a is used in the second circuit. Calculations are made for ambient temperatures from 7°С to –25°С. The effect of underrecovery temperatures in heat exchange equipment is shown. Cycles with R245fa, R142b, R114, R123, R290, R236fa, R600a refrigerants, a mixture of isobutane and isopentane have been investigated. The effect of the complexity of a two-stage scheme on the efficiency of the cycle has been evaluated. The use of more complex schemes (for example, with liquid injection) does not affect the thermodynamic perfection of the heat pump and may be appropriate only to ensure operational reliability. Reducing the underrecovery temperature to 1 K is shown to increase the thermodynamic efficiency of the installation.

References

Arpagaus, C., Bless, F., Uhlmann, M., Schiffmann, J. & Bertsch, S. (2018) High temperature heat pups: Market overview, state of the art, research status, refrigerants, and application potentials. Energy, 152, 985-1010.
Search in Google Scholar Back to article
Deng, J., Wei, Q., Liang, M. & He, S. (2019) Does heat pumps perform energy efficiently as we expected: Field tests and evaluations on varions kinds uf heat pump systes for space heating. Energy and Building, 182. 172-186.
Search in Google Scholar Back to article
Du, A. & Long, J. (2022) Heating performance of a novel two-stage evaporator air-source heat-pump for drying applications. Drying Technology, 40(7), 1356-1368.
Search in Google Scholar Back to article
Gschwend, A., Menzi, T., Caskey, S., Groll, E. & Bertsch, S.S. (2016) Energy consumption of cold climate heat pumps in different climates – Comparison of single-stage and two-stage systems. International Journal of Refrigeration, 62, 193-206.
Search in Google Scholar Back to article
Hosseinnia, S., Poncet, S. & Nesreddine, H. (2023) Technical-economic-enviroumental analysis of high tem-perature cascade heat pump with R718 (high stage) and six different low global warming potential refrigerants (low stage). Energy Conversion and Management, 292, 117356.
Search in Google Scholar Back to article
Kosmadakis, G. (2019) Estimating the potential of industrial (high-temperature) heat pumps for exploiting waste heat in EU industries. Applied Thermal Engineering, 156, 287-298.
Search in Google Scholar Back to article
Lei, B., Shi, H., Wang, Ch., Wu, J. & Zhang, L. (2023) Experimental study on the performance of R290 air-water heat pump with vapor injection for cold regions. Conference Paper, 26th International Congress of Refrigeration. Paris, 96-108.
Search in Google Scholar Back to article
Lisheng, P., Huaixin, W., Qingying, C. & Chen C. (2011) Theoretical and experimental study on several refrigerants of moderately high temperature heat pump. Applied Thermal Engineering, 31(11), 1886-1893, DOI: 10.1016/j.applthermaleng. 2011.02.035.
Search in Google Scholar Back to article
Matsevity, Yu. (2014) System-structural analysis of steam-compressor thermotransformers. NASU. IPmash Kharkiv.
Search in Google Scholar Back to article
Qin, F., Que, Q., Velez, G.M.A. & Zhang, G. (2015) Experimantal investigation on heating performance of heat pump for electric vehicles at –20°C ambient temperature. Energy Conversion and Management, 102, 39-49.
Search in Google Scholar Back to article
Redko, A., Redko, O. & Di Pippo, R. (2020) Low-Temperature Energy Systems. Oxford Academic Press, ISBN: 9780128162491.
Search in Google Scholar Back to article
Redko, A. Kulikova, N., Ujma, A., Redko, O., Burda, Y. & Kompan, A. (2021a) Rational parameters of a hybrid geothermal power plant based on flash/ORC cycles. Budownictwo o Zoptymalizowanym Potencjale Energetycznym, 10, 1, 121-133.
Search in Google Scholar Back to article
Redko, A., Ujma, A., Pavlovska, A., Burda, Y. & Andoniev, V. (2021b) Heat recovery in hybrid flash/ORC power plants. International Scientific Conference Engineering for Rural Development, 1355-1358, DOI: 10.22616/ERDev.2021.20.TF295.
Search in Google Scholar Back to article
Redko, I., Ujma, A., Redko, A., Pavlovskiy, S., Redko, O. & Burda, Y. (2021c) Energy efficiency of buildings in the cities of Ukraine under the conditions of sustainable development of centralized heat supply. Energy and Buildings, 247(1), 110947.
Search in Google Scholar Back to article
Savchenko, O. & Lis, A. (2020) Economic indicators of a heating system of a building in Ukraine and Poland. Budownictwo o Zoptymalizowanym Potencjale Energetycznym, 9, 2, 89-94.
Search in Google Scholar Back to article
Sayegh, M.A., Jadwiszczak, P., Axcell, B.P., Niemierka, E., Bryś, K. & Jouhara, H. (2018) Heat pump placement, connection and operationl modes in Europen district heating. Energy and Buildings, 166, 122-144.
Search in Google Scholar Back to article
Shepitchak, V. & Zhelykh, V. (2020) Analysis of the use of heating film in the heat supply of industrial premises. Budownictwo o Zoptymalizowanym Potencjale Energetycznym, 9, 2, 113-118.
Search in Google Scholar Back to article
Wang, W. & Li, Y. (2019) Intermediate pressure optimization for two-stage air-source heat pump with flash tank cycle vapor injection via extremum seeking. Applied Energy, 238, 612-626, DOI: 10.1016/j.apenergy.2019.01.083.
Search in Google Scholar Back to article
Wang, P., Ma, H., Spitzenberger, J., Abu-Heiba, A. & Nawaz, K. (2021) Thermal performance of an absorption-assisted two-stage ejector air-to-water heat pump. Energy Conversion and Management, 230, 113761.
Search in Google Scholar Back to article
Xing-Qi, C., Wei-Wei, Y., Fu, Z. & Ya-Ling, H. (2014) Performance analysis of different high-temperature heat pump systems for low-grade waste heat recovery. Applied Thermal Engineering 71(1), 291-300, DOI: 10.1016/j.applthermaleng.2014.06.049.
Search in Google Scholar Back to article
Zhelykh, V., Voznyak, O., Yurkevych, Y., Sukholova, I. & Dovbush, O. (2021) Enhancing of energetic and economic efficiency of air distribution by swirled-compact air jets. Production Engineering Archives, 27(3), 171-175.
Search in Google Scholar Back to article

Parameters of a cascade two-stage air-to-water heat pump at low ambient temperature

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