Fault Detection Methodology for Secondary Fluid Flow Rate in a Heat Pump Unit
Fault detection and diagnosis (FDD) has become an important subject in heat pumps due to its potential for energy savings. However, research on multiple faults occurring at the secondary fluid side of heat pumps is rare in the open literature. This study experimentally examined single secondary flui...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-06-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/13/11/2974 |
| _version_ | 1827715345789485056 |
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| author | Samuel Boahen Kwesi Mensah Yujin Nam Jong Min Choi |
| author_facet | Samuel Boahen Kwesi Mensah Yujin Nam Jong Min Choi |
| author_sort | Samuel Boahen |
| collection | DOAJ |
| description | Fault detection and diagnosis (FDD) has become an important subject in heat pumps due to its potential for energy savings. However, research on multiple faults occurring at the secondary fluid side of heat pumps is rare in the open literature. This study experimentally examined single secondary fluid flow rate faults (SSFF) and multiple-simultaneous secondary fluid flow rate faults (MSSFF) and their effects on the performance of a heat pump unit, which is a core component of ground source heat pump systems, and proposed FDD methodology to detect these faults. The secondary fluid flow rate faults were simulated in cooling mode by varying the evaporator and condenser secondary fluid flow rates at 60%, 80%, 100%, 120%, and 140% of the reference value according to varying outdoor entering water temperature conditions. Condenser secondary fluid flow rate faults affected the heat pump coefficient of performance(<i>COP</i>) significantly more than the evaporator secondary fluid flow rate fault in SSFF. Cooling capacity was highly dependent on the evaporator secondary fluid flow rate fault while <i>COP</i> was greatly affected by the condenser secondary fluid flow rate fault in MSSFF. The FDD methodology was modeled using correlations and performance trends of the heat pump and can detect SSFF and MSSFF within an error threshold of ±1.6% and ±6.4% respectively. |
| first_indexed | 2024-03-10T19:15:54Z |
| format | Article |
| id | doaj.art-48d927ed34a241889b0ce9d92fd2200a |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T19:15:54Z |
| publishDate | 2020-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-48d927ed34a241889b0ce9d92fd2200a2023-11-20T03:21:56ZengMDPI AGEnergies1996-10732020-06-011311297410.3390/en13112974Fault Detection Methodology for Secondary Fluid Flow Rate in a Heat Pump UnitSamuel Boahen0Kwesi Mensah1Yujin Nam2Jong Min Choi3Department of Mechanical Engineering, Cape Coast Technical University, P.O. Box DL 50, Cape Coast, GhanaGraduate School of Mechanical Engineering, Hanbat National University, Daejeon 34158, KoreaDepartment of Architectural Engineering, Pusan National University, Busan 46241, KoreaDepartment of Mechanical Engineering, Hanbat National University, Daejeon 34158, KoreaFault detection and diagnosis (FDD) has become an important subject in heat pumps due to its potential for energy savings. However, research on multiple faults occurring at the secondary fluid side of heat pumps is rare in the open literature. This study experimentally examined single secondary fluid flow rate faults (SSFF) and multiple-simultaneous secondary fluid flow rate faults (MSSFF) and their effects on the performance of a heat pump unit, which is a core component of ground source heat pump systems, and proposed FDD methodology to detect these faults. The secondary fluid flow rate faults were simulated in cooling mode by varying the evaporator and condenser secondary fluid flow rates at 60%, 80%, 100%, 120%, and 140% of the reference value according to varying outdoor entering water temperature conditions. Condenser secondary fluid flow rate faults affected the heat pump coefficient of performance(<i>COP</i>) significantly more than the evaporator secondary fluid flow rate fault in SSFF. Cooling capacity was highly dependent on the evaporator secondary fluid flow rate fault while <i>COP</i> was greatly affected by the condenser secondary fluid flow rate fault in MSSFF. The FDD methodology was modeled using correlations and performance trends of the heat pump and can detect SSFF and MSSFF within an error threshold of ±1.6% and ±6.4% respectively.https://www.mdpi.com/1996-1073/13/11/2974fault detection and diagnosisheat pump<i>COP</i>capacitysecondary fluid flow rateground source heat pump |
| spellingShingle | Samuel Boahen Kwesi Mensah Yujin Nam Jong Min Choi Fault Detection Methodology for Secondary Fluid Flow Rate in a Heat Pump Unit Energies fault detection and diagnosis heat pump <i>COP</i> capacity secondary fluid flow rate ground source heat pump |
| title | Fault Detection Methodology for Secondary Fluid Flow Rate in a Heat Pump Unit |
| title_full | Fault Detection Methodology for Secondary Fluid Flow Rate in a Heat Pump Unit |
| title_fullStr | Fault Detection Methodology for Secondary Fluid Flow Rate in a Heat Pump Unit |
| title_full_unstemmed | Fault Detection Methodology for Secondary Fluid Flow Rate in a Heat Pump Unit |
| title_short | Fault Detection Methodology for Secondary Fluid Flow Rate in a Heat Pump Unit |
| title_sort | fault detection methodology for secondary fluid flow rate in a heat pump unit |
| topic | fault detection and diagnosis heat pump <i>COP</i> capacity secondary fluid flow rate ground source heat pump |
| url | https://www.mdpi.com/1996-1073/13/11/2974 |
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