Temperature disturbance management in a heat exchanger network for maximum energy recovery considering economic analysis
The design of heat exchanger networks (HEN) in the process industry has largely focused on minimisation of operating and capital costs using techniques such as pinch analysis or mathematical modelling. Aspects of operability and flexibility, including issues of disturbances affecting downstream proc...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2019
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| Online Access: | http://eprints.utm.my/88362/1/AinurMunirahHafizan2019_TemperatureDisturbanceManagementinaHeatExchanger.pdf |
| _version_ | 1796864616823783424 |
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| author | Hafizan, Ainur Munirah Klemes, Jiri Jaromir Wan Alwi, Sharifah Rafidah Abdul Manan, Zainuddin Abd. Hamid, Mohd. Kamaruddin |
| author_facet | Hafizan, Ainur Munirah Klemes, Jiri Jaromir Wan Alwi, Sharifah Rafidah Abdul Manan, Zainuddin Abd. Hamid, Mohd. Kamaruddin |
| author_sort | Hafizan, Ainur Munirah |
| collection | ePrints |
| description | The design of heat exchanger networks (HEN) in the process industry has largely focused on minimisation of operating and capital costs using techniques such as pinch analysis or mathematical modelling. Aspects of operability and flexibility, including issues of disturbances affecting downstream processes during the operation of highly integrated HEN, still need development. This work presents a methodology to manage temperature disturbances in a HEN design to achieve maximum heat recovery, considering the impact of supply temperature fluctuations on utility consumption, heat exchanger sizing, bypass placement and economic performance. Key observations have been made and new heuristics are proposed to guide heat exchanger sizing to consider disturbances and bypass placement for cases above and below the HEN pinch point. Application of the methodology on two case studies shows that the impact of supply temperature fluctuations on downstream heat exchangers can be reduced through instant propagation of the disturbances to heaters or coolers. Where possible, the disturbances have been capitalised upon for additional heat recovery using the pinch analysis plus-minus principle as a guide. Results of the case study show that the HEN with maximum HE area yields economic savings of up to 15% per year relative to the HEN with a nominal HE area. |
| first_indexed | 2024-03-05T20:44:35Z |
| format | Article |
| id | utm.eprints-88362 |
| institution | Universiti Teknologi Malaysia - ePrints |
| language | English |
| last_indexed | 2024-03-05T20:44:35Z |
| publishDate | 2019 |
| publisher | MDPI AG |
| record_format | dspace |
| spelling | utm.eprints-883622020-12-15T00:02:05Z http://eprints.utm.my/88362/ Temperature disturbance management in a heat exchanger network for maximum energy recovery considering economic analysis Hafizan, Ainur Munirah Klemes, Jiri Jaromir Wan Alwi, Sharifah Rafidah Abdul Manan, Zainuddin Abd. Hamid, Mohd. Kamaruddin TP Chemical technology The design of heat exchanger networks (HEN) in the process industry has largely focused on minimisation of operating and capital costs using techniques such as pinch analysis or mathematical modelling. Aspects of operability and flexibility, including issues of disturbances affecting downstream processes during the operation of highly integrated HEN, still need development. This work presents a methodology to manage temperature disturbances in a HEN design to achieve maximum heat recovery, considering the impact of supply temperature fluctuations on utility consumption, heat exchanger sizing, bypass placement and economic performance. Key observations have been made and new heuristics are proposed to guide heat exchanger sizing to consider disturbances and bypass placement for cases above and below the HEN pinch point. Application of the methodology on two case studies shows that the impact of supply temperature fluctuations on downstream heat exchangers can be reduced through instant propagation of the disturbances to heaters or coolers. Where possible, the disturbances have been capitalised upon for additional heat recovery using the pinch analysis plus-minus principle as a guide. Results of the case study show that the HEN with maximum HE area yields economic savings of up to 15% per year relative to the HEN with a nominal HE area. MDPI AG 2019-02-13 Article PeerReviewed application/pdf en http://eprints.utm.my/88362/1/AinurMunirahHafizan2019_TemperatureDisturbanceManagementinaHeatExchanger.pdf Hafizan, Ainur Munirah and Klemes, Jiri Jaromir and Wan Alwi, Sharifah Rafidah and Abdul Manan, Zainuddin and Abd. Hamid, Mohd. Kamaruddin (2019) Temperature disturbance management in a heat exchanger network for maximum energy recovery considering economic analysis. Energies, 12 (4). ISSN 1996-1073 http://dx.doi.org/10.3390/en12040594 DOI:10.3390/en12040594 |
| spellingShingle | TP Chemical technology Hafizan, Ainur Munirah Klemes, Jiri Jaromir Wan Alwi, Sharifah Rafidah Abdul Manan, Zainuddin Abd. Hamid, Mohd. Kamaruddin Temperature disturbance management in a heat exchanger network for maximum energy recovery considering economic analysis |
| title | Temperature disturbance management in a heat exchanger network for maximum energy recovery considering economic analysis |
| title_full | Temperature disturbance management in a heat exchanger network for maximum energy recovery considering economic analysis |
| title_fullStr | Temperature disturbance management in a heat exchanger network for maximum energy recovery considering economic analysis |
| title_full_unstemmed | Temperature disturbance management in a heat exchanger network for maximum energy recovery considering economic analysis |
| title_short | Temperature disturbance management in a heat exchanger network for maximum energy recovery considering economic analysis |
| title_sort | temperature disturbance management in a heat exchanger network for maximum energy recovery considering economic analysis |
| topic | TP Chemical technology |
| url | http://eprints.utm.my/88362/1/AinurMunirahHafizan2019_TemperatureDisturbanceManagementinaHeatExchanger.pdf |
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