Hybrid Carbon Dioxide Heat Pump for the Multifamily Residential Buildings in the Heat Supply System Based on CHP
The work is devoted to centralized heat supply systems based on CHP plants and the use with them heat pumps (HP) on carbon dioxide as refrigerant. Heat pumps are used in heat supply sys-tems for buildings and use the heat of the outside air and, at the same time, the heat of the return network water...
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| Format: | Article |
| Language: | English |
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Academy of Sciences of Moldova
2021-09-01
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| Series: | Problems of the Regional Energetics |
| Subjects: | |
| Online Access: | https://journal.ie.asm.md/assets/files/08_03_51_2021.pdf |
| _version_ | 1818821847239622656 |
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| author | Sit M.L. Juravliov A.A. |
| author_facet | Sit M.L. Juravliov A.A. |
| author_sort | Sit M.L. |
| collection | DOAJ |
| description | The work is devoted to centralized heat supply systems based on CHP plants and the use with them heat pumps (HP) on carbon dioxide as refrigerant. Heat pumps are used in heat supply sys-tems for buildings and use the heat of the outside air and, at the same time, the heat of the return network water (WWR) as a source of low-grade heat (LHP). The aim of the study is to develop a structural diagram of such a heat pump, where the outside air is heated by a heat exchanger in-stalled in the return water line of the heating system, to develop a hydraulic circuit of a heat pump taking into account the law of regulation of the building heating system, to develop an al-gorithm for controlling the operating modes of the so-called balancing heat exchanger installed after gas cooler and internal heat exchanger of the heat pump. The most significant results were the hydraulic circuit of the heat pump, the aerodynamic circuit of the air supply path to the heat pump evaporator, the balancing heat exchanger control system, taking into account the require-ment to ensure the operation of the control valve in a single-phase flow. The significance of the results obtained consisted in obtaining the dependences between the CO temperature graph and the parameters of the thermodynamic cycle of the heat pump, which ensured the operation of the control valve of the heat pump in a single-phase environment. |
| first_indexed | 2024-12-18T23:14:41Z |
| format | Article |
| id | doaj.art-7e1a5d2faeac4118ba565dc2595cb390 |
| institution | Directory Open Access Journal |
| issn | 1857-0070 |
| language | English |
| last_indexed | 2024-12-18T23:14:41Z |
| publishDate | 2021-09-01 |
| publisher | Academy of Sciences of Moldova |
| record_format | Article |
| series | Problems of the Regional Energetics |
| spelling | doaj.art-7e1a5d2faeac4118ba565dc2595cb3902022-12-21T20:48:15ZengAcademy of Sciences of MoldovaProblems of the Regional Energetics1857-00702021-09-0151310.52254/1857-0070.2021.3-51.08Hybrid Carbon Dioxide Heat Pump for the Multifamily Residential Buildings in the Heat Supply System Based on CHPSit M.L.0Juravliov A.A.1Institute of Power Engineering of Moldova Chisinau, Republic of MoldovaInstitute of Power Engineering of Moldova Chisinau, Republic of MoldovaThe work is devoted to centralized heat supply systems based on CHP plants and the use with them heat pumps (HP) on carbon dioxide as refrigerant. Heat pumps are used in heat supply sys-tems for buildings and use the heat of the outside air and, at the same time, the heat of the return network water (WWR) as a source of low-grade heat (LHP). The aim of the study is to develop a structural diagram of such a heat pump, where the outside air is heated by a heat exchanger in-stalled in the return water line of the heating system, to develop a hydraulic circuit of a heat pump taking into account the law of regulation of the building heating system, to develop an al-gorithm for controlling the operating modes of the so-called balancing heat exchanger installed after gas cooler and internal heat exchanger of the heat pump. The most significant results were the hydraulic circuit of the heat pump, the aerodynamic circuit of the air supply path to the heat pump evaporator, the balancing heat exchanger control system, taking into account the require-ment to ensure the operation of the control valve in a single-phase flow. The significance of the results obtained consisted in obtaining the dependences between the CO temperature graph and the parameters of the thermodynamic cycle of the heat pump, which ensured the operation of the control valve of the heat pump in a single-phase environment.https://journal.ie.asm.md/assets/files/08_03_51_2021.pdfcarbon dioxide heat pumpadistrict heating |
| spellingShingle | Sit M.L. Juravliov A.A. Hybrid Carbon Dioxide Heat Pump for the Multifamily Residential Buildings in the Heat Supply System Based on CHP Problems of the Regional Energetics carbon dioxide heat pump a district heating |
| title | Hybrid Carbon Dioxide Heat Pump for the Multifamily Residential Buildings in the Heat Supply System Based on CHP |
| title_full | Hybrid Carbon Dioxide Heat Pump for the Multifamily Residential Buildings in the Heat Supply System Based on CHP |
| title_fullStr | Hybrid Carbon Dioxide Heat Pump for the Multifamily Residential Buildings in the Heat Supply System Based on CHP |
| title_full_unstemmed | Hybrid Carbon Dioxide Heat Pump for the Multifamily Residential Buildings in the Heat Supply System Based on CHP |
| title_short | Hybrid Carbon Dioxide Heat Pump for the Multifamily Residential Buildings in the Heat Supply System Based on CHP |
| title_sort | hybrid carbon dioxide heat pump for the multifamily residential buildings in the heat supply system based on chp |
| topic | carbon dioxide heat pump a district heating |
| url | https://journal.ie.asm.md/assets/files/08_03_51_2021.pdf |
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