Optimization of Heat Exchanger Network via Pinch Analysis in Heat Pump-Assisted Textile Industry Wastewater Heat Recovery System
Reactive dyeing is primarily used in the textile industry to achieve a high level of productivity for high-quality products. This method requires heating a large amount of freshwater for dyeing and cooling for the biological treatment of discharged wastewater. If the heat of the wastewater discharge...
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MDPI AG
2022-04-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/15/9/3090 |
| _version_ | 1797505064083914752 |
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| author | Yurim Kim Jonghun Lim Jae Yun Shim Seokil Hong Heedong Lee Hyungtae Cho |
| author_facet | Yurim Kim Jonghun Lim Jae Yun Shim Seokil Hong Heedong Lee Hyungtae Cho |
| author_sort | Yurim Kim |
| collection | DOAJ |
| description | Reactive dyeing is primarily used in the textile industry to achieve a high level of productivity for high-quality products. This method requires heating a large amount of freshwater for dyeing and cooling for the biological treatment of discharged wastewater. If the heat of the wastewater discharged from the textile industry is recovered, energy used for heating freshwater and cooling wastewater can be significantly reduced. However, the energy efficiency of this industry remains low, owing to the limited use of waste heat. Hence, this study suggested a cost-optimal heat exchanger network (HEN) in a heat pump-assisted textile industry wastewater heat recovery system with maximizing energy efficiency simultaneously. A novel two-step approach was suggested to develop the optimal HEN in heat pump-assisted textile industry wastewater heat recovery system. In the first step, the system was designed to integrate the heat exchanger and heat pump to recover waste heat effectively. In the second step, the HEN in the newly developed system was retrofitted using super-targeted pinch analysis to minimize cost and maximize energy efficiency simultaneously. As a result, the proposed wastewater heat recovery system reduced the total annualized cost by up to 43.07% as compared to the conventional textile industry lacking a wastewater heat recovery system. These findings may facilitate economic and environmental improvements in the textile industry. |
| first_indexed | 2024-03-10T04:13:20Z |
| format | Article |
| id | doaj.art-b5db139a00e6407b858148d8edfa1880 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T04:13:20Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-b5db139a00e6407b858148d8edfa18802023-11-23T08:06:24ZengMDPI AGEnergies1996-10732022-04-01159309010.3390/en15093090Optimization of Heat Exchanger Network via Pinch Analysis in Heat Pump-Assisted Textile Industry Wastewater Heat Recovery SystemYurim Kim0Jonghun Lim1Jae Yun Shim2Seokil Hong3Heedong Lee4Hyungtae Cho5Green Materials and Processes R&D Group, Korea Institute of Industrial Technology, Ulsan 44413, KoreaGreen Materials and Processes R&D Group, Korea Institute of Industrial Technology, Ulsan 44413, KoreaICT Textile and Apparel R&BD Group, Korea Institute of Industrial Technology, Ansan 15588, KoreaICT Textile and Apparel R&BD Group, Korea Institute of Industrial Technology, Ansan 15588, KoreaICT Textile and Apparel R&BD Group, Korea Institute of Industrial Technology, Ansan 15588, KoreaGreen Materials and Processes R&D Group, Korea Institute of Industrial Technology, Ulsan 44413, KoreaReactive dyeing is primarily used in the textile industry to achieve a high level of productivity for high-quality products. This method requires heating a large amount of freshwater for dyeing and cooling for the biological treatment of discharged wastewater. If the heat of the wastewater discharged from the textile industry is recovered, energy used for heating freshwater and cooling wastewater can be significantly reduced. However, the energy efficiency of this industry remains low, owing to the limited use of waste heat. Hence, this study suggested a cost-optimal heat exchanger network (HEN) in a heat pump-assisted textile industry wastewater heat recovery system with maximizing energy efficiency simultaneously. A novel two-step approach was suggested to develop the optimal HEN in heat pump-assisted textile industry wastewater heat recovery system. In the first step, the system was designed to integrate the heat exchanger and heat pump to recover waste heat effectively. In the second step, the HEN in the newly developed system was retrofitted using super-targeted pinch analysis to minimize cost and maximize energy efficiency simultaneously. As a result, the proposed wastewater heat recovery system reduced the total annualized cost by up to 43.07% as compared to the conventional textile industry lacking a wastewater heat recovery system. These findings may facilitate economic and environmental improvements in the textile industry.https://www.mdpi.com/1996-1073/15/9/3090textile industrywastewater heat recovery systemheat pumppinch analysisheat exchanger network |
| spellingShingle | Yurim Kim Jonghun Lim Jae Yun Shim Seokil Hong Heedong Lee Hyungtae Cho Optimization of Heat Exchanger Network via Pinch Analysis in Heat Pump-Assisted Textile Industry Wastewater Heat Recovery System Energies textile industry wastewater heat recovery system heat pump pinch analysis heat exchanger network |
| title | Optimization of Heat Exchanger Network via Pinch Analysis in Heat Pump-Assisted Textile Industry Wastewater Heat Recovery System |
| title_full | Optimization of Heat Exchanger Network via Pinch Analysis in Heat Pump-Assisted Textile Industry Wastewater Heat Recovery System |
| title_fullStr | Optimization of Heat Exchanger Network via Pinch Analysis in Heat Pump-Assisted Textile Industry Wastewater Heat Recovery System |
| title_full_unstemmed | Optimization of Heat Exchanger Network via Pinch Analysis in Heat Pump-Assisted Textile Industry Wastewater Heat Recovery System |
| title_short | Optimization of Heat Exchanger Network via Pinch Analysis in Heat Pump-Assisted Textile Industry Wastewater Heat Recovery System |
| title_sort | optimization of heat exchanger network via pinch analysis in heat pump assisted textile industry wastewater heat recovery system |
| topic | textile industry wastewater heat recovery system heat pump pinch analysis heat exchanger network |
| url | https://www.mdpi.com/1996-1073/15/9/3090 |
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