Heat Recovery from Wastewater—A Review of Available Resource
The EU Directive 2018/2001 recognized wastewater as a renewable heat source. Wastewater from domestic, industrial and commercial developments maintains considerable amounts of thermal energy after discharging into the sewer system. It is possible to recover this heat by using technologies like heat...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-04-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/13/9/1274 |
| _version_ | 1797535569668997120 |
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| author | Himanshu Nagpal Jan Spriet Madhu Krishna Murali Aonghus McNabola |
| author_facet | Himanshu Nagpal Jan Spriet Madhu Krishna Murali Aonghus McNabola |
| author_sort | Himanshu Nagpal |
| collection | DOAJ |
| description | The EU Directive 2018/2001 recognized wastewater as a renewable heat source. Wastewater from domestic, industrial and commercial developments maintains considerable amounts of thermal energy after discharging into the sewer system. It is possible to recover this heat by using technologies like heat exchangers and heat pumps; and to reuse it to satisfy heating demands. This paper presents a review of the literature on wastewater heat recovery (WWHR) and its potential at different scales within the sewer system, including the component level, building level, sewer pipe network level, and wastewater treatment plant (WWTP) level. A systematic review is provided of the benefits and challenges of WWHR across each of these levels taking into consideration technical, economic and environmental aspects. This study analyzes important attributes of WWHR such as temperature and flow dynamics of the sewer system, impacts of WWHR on the environment, and legal regulations involved. Existing gaps in the WWHR field are also identified. It is concluded that WWHR has a significant potential to supply clean energy at a scale ranging from buildings to large communities and districts. Further attention to WWHR is needed from the research community, policymakers and other stakeholders to realize the full potential of this valuable renewable heat source. |
| first_indexed | 2024-03-10T11:46:18Z |
| format | Article |
| id | doaj.art-7dc65a6441b1470cabb828e86628b5df |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-10T11:46:18Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-7dc65a6441b1470cabb828e86628b5df2023-11-21T18:01:49ZengMDPI AGWater2073-44412021-04-01139127410.3390/w13091274Heat Recovery from Wastewater—A Review of Available ResourceHimanshu Nagpal0Jan Spriet1Madhu Krishna Murali2Aonghus McNabola3Department of Civil, Structural & Environmental Engineering, Trinity College Dublin, Dublin, IrelandDepartment of Civil, Structural & Environmental Engineering, Trinity College Dublin, Dublin, IrelandDepartment of Civil, Structural & Environmental Engineering, Trinity College Dublin, Dublin, IrelandDepartment of Civil, Structural & Environmental Engineering, Trinity College Dublin, Dublin, IrelandThe EU Directive 2018/2001 recognized wastewater as a renewable heat source. Wastewater from domestic, industrial and commercial developments maintains considerable amounts of thermal energy after discharging into the sewer system. It is possible to recover this heat by using technologies like heat exchangers and heat pumps; and to reuse it to satisfy heating demands. This paper presents a review of the literature on wastewater heat recovery (WWHR) and its potential at different scales within the sewer system, including the component level, building level, sewer pipe network level, and wastewater treatment plant (WWTP) level. A systematic review is provided of the benefits and challenges of WWHR across each of these levels taking into consideration technical, economic and environmental aspects. This study analyzes important attributes of WWHR such as temperature and flow dynamics of the sewer system, impacts of WWHR on the environment, and legal regulations involved. Existing gaps in the WWHR field are also identified. It is concluded that WWHR has a significant potential to supply clean energy at a scale ranging from buildings to large communities and districts. Further attention to WWHR is needed from the research community, policymakers and other stakeholders to realize the full potential of this valuable renewable heat source.https://www.mdpi.com/2073-4441/13/9/1274wastewater heat recoveryshower water heat recoverywastewater heat exchangerheat pump low-grade heat |
| spellingShingle | Himanshu Nagpal Jan Spriet Madhu Krishna Murali Aonghus McNabola Heat Recovery from Wastewater—A Review of Available Resource Water wastewater heat recovery shower water heat recovery wastewater heat exchanger heat pump low-grade heat |
| title | Heat Recovery from Wastewater—A Review of Available Resource |
| title_full | Heat Recovery from Wastewater—A Review of Available Resource |
| title_fullStr | Heat Recovery from Wastewater—A Review of Available Resource |
| title_full_unstemmed | Heat Recovery from Wastewater—A Review of Available Resource |
| title_short | Heat Recovery from Wastewater—A Review of Available Resource |
| title_sort | heat recovery from wastewater a review of available resource |
| topic | wastewater heat recovery shower water heat recovery wastewater heat exchanger heat pump low-grade heat |
| url | https://www.mdpi.com/2073-4441/13/9/1274 |
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