Feasibility, Flexibility and Sensitivity Tests on Delta Temperature Minimum to Obtain Operable and Flexible Heat Exchanger Network

Abstract:

This paper explains about the controllability effect on delta temperature minimum (ΔT_min) in order to get flexible and operable heat exchanger network (HEN). There are many researches based on design and cost effect to ΔT_min contribution. However, there are lacks of study on how the ΔT_min effect to controllability of HENs. Therefore, this paper focuses on controllability analysis of different HENs design based on ΔT_min contribution. There are six HEN designs were obtained from different ΔT_min values such as 20°C, 25°C, 30°C, 35°C, 40°C and 50°C and has been analyzed. The analysis consists of three different controllability tests which are feasibility, flexibility and sensitivity. Feasibility test is used to check either the HEN design is feasible or not. Next, the feasible HEN design is then analyzed in terms of flexibility. The flexibility test is used to calculate the design flexibility in terms of how much the percentage the design can handle under uncertainties. Lastly is to test the process sensitivity with respect to disturbance changes. Throughout the controllability tests, several options for control structure were built and analyzed. A simple HEN case study was used to analyze the controllability.

• Periodical: Applied Mechanics and Materials (Volume 735)
• Pages: 299-303
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.735.299
• Online since: February 2015
• Authors: Suraya Hanim Abu Bakar, Mohd Kamaruddin Abd Hamid*, Sharifah Rafidah Wan Alwi, Zainuddin Abdul Manan
• Keywords: Control Structure, Controllability, Delta Temperature Minimum, Flexibility, Flexible Heat Exchanger Network, Operable Heat Exchanger Network

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