Customised retrofit of heat exchanger network combining area distribution and targeted investment

Yee Qing Lai, Sharifah Rafidah Wan Alwi and Zainuddin Abdul Manan

Energy, 2019, vol. 179, issue C, 1054-1066

Abstract: Heat exchanger network (HEN) retrofit plays a major role in solving environmental issues and improving plants’ performance. Development of HEN retrofit graphical tools has recently focused on detailed representation of existing HEN to facilitate retrofit problem-solving. This work presents a new customised approach for HEN retrofit that uses a combination of individual stream temperature versus enthalpy plot (STEP) to map hot and cold streams, a heat exchanger area versus enthalpy (A vs H) plot to minimise the required overall heat exchanger area and graphical cost screening tool and strategies to steer and customise a retrofit design toward a desired investment payback period. Application of the new retrofit methodology on a sunflower oil production plant shows comparable energy savings and 20% shorter payback period as compared other established retrofit methodologies.

Keywords: Pinch analysis; Heat exchanger network (HEN) retrofit; Stream temperature versus enthalpy plot (STEP); Heat exchanger area versus enthalpy plot (A vs H plot); Area distribution; Targeted investment (search for similar items in EconPapers)
Date: 2019
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Citations: View citations in EconPapers (9)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:179:y:2019:i:c:p:1054-1066

DOI: 10.1016/j.energy.2019.05.047

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