Optimal operation of heat exchanger networks

Glemmestad, Bjørn; Skogestad, Sigurd; Gundersen, Truls

doi:10.1016/s0098-1354(98)00289-0

Cited by 47 publications

(26 citation statements)

References 8 publications

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“…In paper production, a potential for energy savings with better control is reported by MacHattie (2008). The importance of optimal operation of HENs to minimise the utility cost is pointed out by Glemmestad et al (1999) and Lersbamrungsuk et al (2008). Influences of seasonal variations in the pulp industry have been examined in several previous studies, both on energy-saving opportunities (Persson and Berntsson, 2009) and on pulp quality (Browne et al, 2004;Fuhr et al, 1998).…”

Section: Previous Workmentioning

confidence: 99%

Influence of short-term variations on energy-saving opportunities in a pulp mill

Persson

Berntsson

2010

Journal of Cleaner Production

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Section: Previous Workmentioning

confidence: 99%

Influence of short-term variations on energy-saving opportunities in a pulp mill

Persson

Berntsson

2010

Journal of Cleaner Production

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“…A method based on structural information using an arithmetic sign (directional effect between a manipulation and a controlled variable) to generate an optimal control policy was studied by Mathisen et al, 5 Glemmestad et al, 6 and Lersbamrungsuk et al 2 Online and periodic optimizations for the operation of HENs were studied by Aguilera and Marchetti, 7 Glemmestad et al, 8 and González et al 9 If only single bypasses and utility duties are used as manipulations, then the steady-state optimal operation of HENs can be formulated as a linear programming (LP) problem. 2,7 This assumes constant heat capacity for the streams and constant heat transfer coefficients, which is a reasonable assumption for many problems.…”

Section: Calandranis and Stephanopoulosmentioning

confidence: 99%

Control structure design for optimal operation of heat exchanger networks

et al. 2007

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in Wiley InterScience (www.interscience.wiley.com).When only single bypasses and utility duties are used as manipulations, optimal operation of heat exchanger networks (HENs) can be categorized as an active constraint control problem. This work suggests a simple split-range control scheme to implement the optimal operation. For a given HEN and information about the disturbances, the corresponding control structure can be found by solving an integer-linear programming (ILP) problem with two objective functions providing optimal split-range pairs (for tracking active constraints during the operation) and appropriate control pairings (for fast control action). A HEN case study is used to demonstrate the application of the proposed design technique. Dynamic simulation shows the ability to provide the optimal operation of the obtained control structure.

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“…Considering that conditions in real plants might be different to those used during the design step, optimal operation of HEN becomes an excellent complement to the typical synthesis problem (Aguilera and Marchetti, 1998;Glemmestad et al, 1999;Rodera et al, 2003;Lersbamrungsuk et al, 2008;Jäschke and Skogestad, 2014). Some of the difficulties to solve during operations due to bad designs have been also explored (Jensen and Skogestad, 2008).…”

Section: Introductionmentioning

confidence: 99%