Impact of Intake and Exhaust Ducts on the Recovery Efficiency of Heat Recovery Ventilation Systems
The heat recovery efficiency of ventilation systems utilizing heat recovery ventilators (HRVs) depends not only on the heat recovery efficiency of the HRV units themselves but also on the intake and exhaust ducts that connect the HRV units to the outside environment. However, these ducts are often n...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-01-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/14/2/351 |
| _version_ | 1797413498379042816 |
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| author | Tom Marsik Riley Bickford Conor Dennehy Robbin Garber-Slaght Jeremy Kasper |
| author_facet | Tom Marsik Riley Bickford Conor Dennehy Robbin Garber-Slaght Jeremy Kasper |
| author_sort | Tom Marsik |
| collection | DOAJ |
| description | The heat recovery efficiency of ventilation systems utilizing heat recovery ventilators (HRVs) depends not only on the heat recovery efficiency of the HRV units themselves but also on the intake and exhaust ducts that connect the HRV units to the outside environment. However, these ducts are often neglected in heat loss calculations, as their impact on the overall heat recovery efficiency of HRV systems is often not understood and, to the knowledge of the authors, a mathematical model for the overall heat recovery efficiency of HRV systems that accounts for these ducts has not been published. In this research, a mathematical model for the overall heat recovery efficiency of HRV systems that accounts for the intake and exhaust ducts was derived and validated using real-life data. The model-predicted decrease in heat recovery efficiency due to the ducts was in reasonable agreement (relative error within 20%) with the real-life measurements. The results suggest that utilizing this model allows for more correct ventilation heat loss calculations compared to using the heat recovery efficiency of the HRV unit alone, but more field studies are needed to verify the accuracy of this model in a wide range of applications. |
| first_indexed | 2024-03-09T05:18:50Z |
| format | Article |
| id | doaj.art-13726a4dd96e45d9b2c87de6ad790c60 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-09T05:18:50Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-13726a4dd96e45d9b2c87de6ad790c602023-12-03T12:42:34ZengMDPI AGEnergies1996-10732021-01-0114235110.3390/en14020351Impact of Intake and Exhaust Ducts on the Recovery Efficiency of Heat Recovery Ventilation SystemsTom Marsik0Riley Bickford1Conor Dennehy2Robbin Garber-Slaght3Jeremy Kasper4Alaska Center for Energy and Power, University of Alaska Fairbanks, Fairbanks, AK 99775, USAAlaska Center for Energy and Power, University of Alaska Fairbanks, Fairbanks, AK 99775, USACold Climate Housing Research Center, Fairbanks, AK 99775, USACold Climate Housing Research Center, Fairbanks, AK 99775, USAAlaska Center for Energy and Power, University of Alaska Fairbanks, Fairbanks, AK 99775, USAThe heat recovery efficiency of ventilation systems utilizing heat recovery ventilators (HRVs) depends not only on the heat recovery efficiency of the HRV units themselves but also on the intake and exhaust ducts that connect the HRV units to the outside environment. However, these ducts are often neglected in heat loss calculations, as their impact on the overall heat recovery efficiency of HRV systems is often not understood and, to the knowledge of the authors, a mathematical model for the overall heat recovery efficiency of HRV systems that accounts for these ducts has not been published. In this research, a mathematical model for the overall heat recovery efficiency of HRV systems that accounts for the intake and exhaust ducts was derived and validated using real-life data. The model-predicted decrease in heat recovery efficiency due to the ducts was in reasonable agreement (relative error within 20%) with the real-life measurements. The results suggest that utilizing this model allows for more correct ventilation heat loss calculations compared to using the heat recovery efficiency of the HRV unit alone, but more field studies are needed to verify the accuracy of this model in a wide range of applications.https://www.mdpi.com/1996-1073/14/2/351heat recovery ventilator (HRV)recovery efficiencyducts |
| spellingShingle | Tom Marsik Riley Bickford Conor Dennehy Robbin Garber-Slaght Jeremy Kasper Impact of Intake and Exhaust Ducts on the Recovery Efficiency of Heat Recovery Ventilation Systems Energies heat recovery ventilator (HRV) recovery efficiency ducts |
| title | Impact of Intake and Exhaust Ducts on the Recovery Efficiency of Heat Recovery Ventilation Systems |
| title_full | Impact of Intake and Exhaust Ducts on the Recovery Efficiency of Heat Recovery Ventilation Systems |
| title_fullStr | Impact of Intake and Exhaust Ducts on the Recovery Efficiency of Heat Recovery Ventilation Systems |
| title_full_unstemmed | Impact of Intake and Exhaust Ducts on the Recovery Efficiency of Heat Recovery Ventilation Systems |
| title_short | Impact of Intake and Exhaust Ducts on the Recovery Efficiency of Heat Recovery Ventilation Systems |
| title_sort | impact of intake and exhaust ducts on the recovery efficiency of heat recovery ventilation systems |
| topic | heat recovery ventilator (HRV) recovery efficiency ducts |
| url | https://www.mdpi.com/1996-1073/14/2/351 |
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