EXPLORING THE EFFICIENCY OF A RESIDENTIAL AIR-TO-WATER HEAT PUMP IN SUMMER CHANGEOVER REGIMES BASED ON EXERGY ANALYSIS -- A Case Study.
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| Title: | EXPLORING THE EFFICIENCY OF A RESIDENTIAL AIR-TO-WATER HEAT PUMP IN SUMMER CHANGEOVER REGIMES BASED ON EXERGY ANALYSIS -- A Case Study. |
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| Authors: | VUČKOVIĆ, Goran D.1 goran.vuckovic@masfak.ni.ac.rs, STOJILJKOVIĆ, Mirko M.1, IGNJATOVIĆ, Marko G.1, RADOVANOVIĆ, Branka G.1 |
| Source: | Thermal Science. 2025, Vol. 29 Issue 5A, p3415-3427. 13p. |
| Subjects: | Cooling of water, Hydronics, Hot water, Exergy, Water pumps, Heat pumps |
| Abstract: | Heat pumps meet the needs of the residential sector through the following three purposes: domestic water heating, space heating and cooling. This paper presents experimental research into the energy performance of an air-to-water heat pump in real summer changeover regimes, given that these are periods that significantly affect the reduction of efficiency. The transition regimes between the two regimes of operation with the most pronounced changes were especially considered. These were the transition regimes characteristic of operation in the summer period, namely: the transition from the space cooling regime to the domestic water reheating regime, and vice versa. In the observed period, the focus has been on 60 readings, with a resolution of 1 minute. In that period two changes in the operating mode were made, from the stationary space cooling regime (when the heat pump prepared water for the underfloor cooling at 17 °C) to the domestic water reheating mode (when the heat pump prepared hot water in the tank at 43 °C during the day), as well as switching to the previous, cooling mode. The research results show that in the observed period the heat pump worked in stationary regimes of space cooling and domestic water reheating, respectively, with average performance values of 3.52 and 4.75, and average exergetic efficiency of 6.93% and 33.38%. [ABSTRACT FROM AUTHOR] |
| Copyright of Thermal Science is the property of Society of Thermal Engineers of Serbia and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 188533122 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: EXPLORING THE EFFICIENCY OF A RESIDENTIAL AIR-TO-WATER HEAT PUMP IN SUMMER CHANGEOVER REGIMES BASED ON EXERGY ANALYSIS -- A Case Study. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22VUČKOVIĆ%2C+Goran+D%2E%22">VUČKOVIĆ, Goran D.</searchLink><relatesTo>1</relatesTo><i> goran.vuckovic@masfak.ni.ac.rs</i><br /><searchLink fieldCode="AR" term="%22STOJILJKOVIĆ%2C+Mirko+M%2E%22">STOJILJKOVIĆ, Mirko M.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22IGNJATOVIĆ%2C+Marko+G%2E%22">IGNJATOVIĆ, Marko G.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22RADOVANOVIĆ%2C+Branka+G%2E%22">RADOVANOVIĆ, Branka G.</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Thermal+Science%22">Thermal Science</searchLink>. 2025, Vol. 29 Issue 5A, p3415-3427. 13p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Cooling+of+water%22">Cooling of water</searchLink><br /><searchLink fieldCode="DE" term="%22Hydronics%22">Hydronics</searchLink><br /><searchLink fieldCode="DE" term="%22Hot+water%22">Hot water</searchLink><br /><searchLink fieldCode="DE" term="%22Exergy%22">Exergy</searchLink><br /><searchLink fieldCode="DE" term="%22Water+pumps%22">Water pumps</searchLink><br /><searchLink fieldCode="DE" term="%22Heat+pumps%22">Heat pumps</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Heat pumps meet the needs of the residential sector through the following three purposes: domestic water heating, space heating and cooling. This paper presents experimental research into the energy performance of an air-to-water heat pump in real summer changeover regimes, given that these are periods that significantly affect the reduction of efficiency. The transition regimes between the two regimes of operation with the most pronounced changes were especially considered. These were the transition regimes characteristic of operation in the summer period, namely: the transition from the space cooling regime to the domestic water reheating regime, and vice versa. In the observed period, the focus has been on 60 readings, with a resolution of 1 minute. In that period two changes in the operating mode were made, from the stationary space cooling regime (when the heat pump prepared water for the underfloor cooling at 17 °C) to the domestic water reheating mode (when the heat pump prepared hot water in the tank at 43 °C during the day), as well as switching to the previous, cooling mode. The research results show that in the observed period the heat pump worked in stationary regimes of space cooling and domestic water reheating, respectively, with average performance values of 3.52 and 4.75, and average exergetic efficiency of 6.93% and 33.38%. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Thermal Science is the property of Society of Thermal Engineers of Serbia and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.2298/TSCI250117053V Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 13 StartPage: 3415 Subjects: – SubjectFull: Cooling of water Type: general – SubjectFull: Hydronics Type: general – SubjectFull: Hot water Type: general – SubjectFull: Exergy Type: general – SubjectFull: Water pumps Type: general – SubjectFull: Heat pumps Type: general Titles: – TitleFull: EXPLORING THE EFFICIENCY OF A RESIDENTIAL AIR-TO-WATER HEAT PUMP IN SUMMER CHANGEOVER REGIMES BASED ON EXERGY ANALYSIS -- A Case Study. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: VUČKOVIĆ, Goran D. – PersonEntity: Name: NameFull: STOJILJKOVIĆ, Mirko M. – PersonEntity: Name: NameFull: IGNJATOVIĆ, Marko G. – PersonEntity: Name: NameFull: RADOVANOVIĆ, Branka G. IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 05 Text: 2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 03549836 Numbering: – Type: volume Value: 29 – Type: issue Value: 5A Titles: – TitleFull: Thermal Science Type: main |
| ResultId | 1 |
