Thermodynamic Analysis of a Cascade Heat Pump Incorporated in High-Temperature Heating System
Abstract
In this article is presented thermodynamic analysis of a cascade heat pump system designed for using in high-temperature heating systems The own thermodynamic model was built by using properties of working fluids from the Coo/Prop base. The cascade heat pump was designed to use ambient air as heat source with temperature t(amb )= -20 degrees C and for heating water in the high-temperature heating system up to 70 degrees C. The projected heating capacity of the cascade heat pump was 100 kW. The coefficient of performance (COP) of the cascade heat pump system due to use of different working mediums combinations in cycles of the cascade heat pump was investigated. For the best combination of working fluids (mediums) sub-cooling super-heating pressure loss in compressor's suction line, as well as exergy efficiency of the heat pump were analysed as a function of the temperature of the cascade heat exchanger.
Keywords:
working mediums / exergy efficiency / coefficient of performance / cascade heat pumpsSource:
Strojniski Vestnik-Journal of Mechanical Engineering, 2020, 66, 11, 677-683Publisher:
- Assoc Mechanical Engineers Technicians Slovenia, Ljubljana
Funding / projects:
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200105 (University of Belgrade, Faculty of Mechanical Engineering) (RS-MESTD-inst-2020-200105)
DOI: 10.5545/sv-jme.2020.6836
ISSN: 0039-2480
WoS: 000607778800005
Scopus: 2-s2.0-85098234199
Collections
Institution/Community
Mašinski fakultetTY - JOUR AU - Rudonja, Nedžad AU - Gojak, Milan AU - Zlatanović, Ivan AU - Todorović, Ružica PY - 2020 UR - https://machinery.mas.bg.ac.rs/handle/123456789/3359 AB - In this article is presented thermodynamic analysis of a cascade heat pump system designed for using in high-temperature heating systems The own thermodynamic model was built by using properties of working fluids from the Coo/Prop base. The cascade heat pump was designed to use ambient air as heat source with temperature t(amb )= -20 degrees C and for heating water in the high-temperature heating system up to 70 degrees C. The projected heating capacity of the cascade heat pump was 100 kW. The coefficient of performance (COP) of the cascade heat pump system due to use of different working mediums combinations in cycles of the cascade heat pump was investigated. For the best combination of working fluids (mediums) sub-cooling super-heating pressure loss in compressor's suction line, as well as exergy efficiency of the heat pump were analysed as a function of the temperature of the cascade heat exchanger. PB - Assoc Mechanical Engineers Technicians Slovenia, Ljubljana T2 - Strojniski Vestnik-Journal of Mechanical Engineering T1 - Thermodynamic Analysis of a Cascade Heat Pump Incorporated in High-Temperature Heating System EP - 683 IS - 11 SP - 677 VL - 66 DO - 10.5545/sv-jme.2020.6836 ER -
@article{ author = "Rudonja, Nedžad and Gojak, Milan and Zlatanović, Ivan and Todorović, Ružica", year = "2020", abstract = "In this article is presented thermodynamic analysis of a cascade heat pump system designed for using in high-temperature heating systems The own thermodynamic model was built by using properties of working fluids from the Coo/Prop base. The cascade heat pump was designed to use ambient air as heat source with temperature t(amb )= -20 degrees C and for heating water in the high-temperature heating system up to 70 degrees C. The projected heating capacity of the cascade heat pump was 100 kW. The coefficient of performance (COP) of the cascade heat pump system due to use of different working mediums combinations in cycles of the cascade heat pump was investigated. For the best combination of working fluids (mediums) sub-cooling super-heating pressure loss in compressor's suction line, as well as exergy efficiency of the heat pump were analysed as a function of the temperature of the cascade heat exchanger.", publisher = "Assoc Mechanical Engineers Technicians Slovenia, Ljubljana", journal = "Strojniski Vestnik-Journal of Mechanical Engineering", title = "Thermodynamic Analysis of a Cascade Heat Pump Incorporated in High-Temperature Heating System", pages = "683-677", number = "11", volume = "66", doi = "10.5545/sv-jme.2020.6836" }
Rudonja, N., Gojak, M., Zlatanović, I.,& Todorović, R.. (2020). Thermodynamic Analysis of a Cascade Heat Pump Incorporated in High-Temperature Heating System. in Strojniski Vestnik-Journal of Mechanical Engineering Assoc Mechanical Engineers Technicians Slovenia, Ljubljana., 66(11), 677-683. https://doi.org/10.5545/sv-jme.2020.6836
Rudonja N, Gojak M, Zlatanović I, Todorović R. Thermodynamic Analysis of a Cascade Heat Pump Incorporated in High-Temperature Heating System. in Strojniski Vestnik-Journal of Mechanical Engineering. 2020;66(11):677-683. doi:10.5545/sv-jme.2020.6836 .
Rudonja, Nedžad, Gojak, Milan, Zlatanović, Ivan, Todorović, Ružica, "Thermodynamic Analysis of a Cascade Heat Pump Incorporated in High-Temperature Heating System" in Strojniski Vestnik-Journal of Mechanical Engineering, 66, no. 11 (2020):677-683, https://doi.org/10.5545/sv-jme.2020.6836 . .