Optimization of Heat Exchanger Network via Pinch Analysis in Heat Pump-Assisted Textile Industry Wastewater Heat Recovery System

Yurim Kim, Jonghun Lim, Jae Yun Shim, Seokil Hong, Heedong Lee and Hyungtae Cho
Additional contact information
Yurim Kim: Green Materials and Processes R&D Group, Korea Institute of Industrial Technology, Ulsan 44413, Korea
Jonghun Lim: Green Materials and Processes R&D Group, Korea Institute of Industrial Technology, Ulsan 44413, Korea
Jae Yun Shim: ICT Textile and Apparel R&BD Group, Korea Institute of Industrial Technology, Ansan 15588, Korea
Seokil Hong: ICT Textile and Apparel R&BD Group, Korea Institute of Industrial Technology, Ansan 15588, Korea
Heedong Lee: ICT Textile and Apparel R&BD Group, Korea Institute of Industrial Technology, Ansan 15588, Korea
Hyungtae Cho: Green Materials and Processes R&D Group, Korea Institute of Industrial Technology, Ulsan 44413, Korea

Energies, 2022, vol. 15, issue 9, 1-16

Abstract: 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.

Keywords: textile industry; wastewater heat recovery system; heat pump; pinch analysis; heat exchanger network (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

Downloads: (external link)
https://www.mdpi.com/1996-1073/15/9/3090/pdf (application/pdf)
https://www.mdpi.com/1996-1073/15/9/3090/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:15:y:2022:i:9:p:3090-:d:800365

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().