Investigating the Impact of Plumbing Configuration on Energy Savings for Falling-Film Drain Water Heat Recovery Systems
Falling-film drain water heat recovery (DWHR) systems are heat exchangers utilized in residential buildings for recovering energy from greywater. A recent publication by the authors contained a validated model that can be used to predict the performance of DWHR heat exchangers under variable flowrat...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-02-01
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| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/15/3/1141 |
| _version_ | 1797487984012951552 |
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| author | Ramin Manouchehri Michael R. Collins |
| author_facet | Ramin Manouchehri Michael R. Collins |
| author_sort | Ramin Manouchehri |
| collection | DOAJ |
| description | Falling-film drain water heat recovery (DWHR) systems are heat exchangers utilized in residential buildings for recovering energy from greywater. A recent publication by the authors contained a validated model that can be used to predict the performance of DWHR heat exchangers under variable flowrates and temperatures, and this work shows the implementation of the model into Transient System Simulation Tool (TRNSYS) software to perform energy simulations. This work aims to show the different plumbing configurations in which DWHR heat exchangers could be installed, and to simulate their performance under various conditions. The results show that plumbing configuration has a significant impact on energy savings expected from DWHR heat exchangers, and maximum savings are achieved in equal-flow configuration. However, other plumbing configurations provide significant savings, and the mains temperature could dictate which configuration provides higher energy savings. |
| first_indexed | 2024-03-09T23:55:37Z |
| format | Article |
| id | doaj.art-8e510669478746c6bd2688d5ec48e92f |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-09T23:55:37Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-8e510669478746c6bd2688d5ec48e92f2023-11-23T16:25:52ZengMDPI AGEnergies1996-10732022-02-01153114110.3390/en15031141Investigating the Impact of Plumbing Configuration on Energy Savings for Falling-Film Drain Water Heat Recovery SystemsRamin Manouchehri0Michael R. Collins1Solar Thermal Research Laboratory, Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, ON N2L 3G1, CanadaSolar Thermal Research Laboratory, Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, ON N2L 3G1, CanadaFalling-film drain water heat recovery (DWHR) systems are heat exchangers utilized in residential buildings for recovering energy from greywater. A recent publication by the authors contained a validated model that can be used to predict the performance of DWHR heat exchangers under variable flowrates and temperatures, and this work shows the implementation of the model into Transient System Simulation Tool (TRNSYS) software to perform energy simulations. This work aims to show the different plumbing configurations in which DWHR heat exchangers could be installed, and to simulate their performance under various conditions. The results show that plumbing configuration has a significant impact on energy savings expected from DWHR heat exchangers, and maximum savings are achieved in equal-flow configuration. However, other plumbing configurations provide significant savings, and the mains temperature could dictate which configuration provides higher energy savings.https://www.mdpi.com/1996-1073/15/3/1141falling-film drain water heat recoveryheat exchangerTRNSYSenergy simulationsvariable plumbing configuration |
| spellingShingle | Ramin Manouchehri Michael R. Collins Investigating the Impact of Plumbing Configuration on Energy Savings for Falling-Film Drain Water Heat Recovery Systems Energies falling-film drain water heat recovery heat exchanger TRNSYS energy simulations variable plumbing configuration |
| title | Investigating the Impact of Plumbing Configuration on Energy Savings for Falling-Film Drain Water Heat Recovery Systems |
| title_full | Investigating the Impact of Plumbing Configuration on Energy Savings for Falling-Film Drain Water Heat Recovery Systems |
| title_fullStr | Investigating the Impact of Plumbing Configuration on Energy Savings for Falling-Film Drain Water Heat Recovery Systems |
| title_full_unstemmed | Investigating the Impact of Plumbing Configuration on Energy Savings for Falling-Film Drain Water Heat Recovery Systems |
| title_short | Investigating the Impact of Plumbing Configuration on Energy Savings for Falling-Film Drain Water Heat Recovery Systems |
| title_sort | investigating the impact of plumbing configuration on energy savings for falling film drain water heat recovery systems |
| topic | falling-film drain water heat recovery heat exchanger TRNSYS energy simulations variable plumbing configuration |
| url | https://www.mdpi.com/1996-1073/15/3/1141 |
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