Exergy analysis with a flowsheeting simulator—I. Theory; calculating exergies of material streams

Hinderink, A.P.; Kerkhof, F.P.J.M.; Lie, A.B.K.; Arons, J. de Swaan; Kooi, Hedzer J. van der

doi:10.1016/0009-2509(96)00220-5

Cited by 161 publications

(88 citation statements)

References 6 publications

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“…As described earlier, efficiencies were calculated in accordance with the procedure proposed by Kotas (1995) and stream exergy, in accordance with the procedure proposed by Hinderink et al (1996).…”

Section: Resultsmentioning

confidence: 99%

Exergetic and economic analysis of an industrial distillation column

Araújo

Vasconcelos

Fossy

et al. 2007

Braz. J. Chem. Eng.

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-In this work, applications of exergy and economic concepts to compression, heat exchange, and separation processes were used for calculation of the irreversibility rate, thermodynamic efficiency, and internal rate of return (IRR) of the profitability. A case study based on a real process, the purification of 1,2-dichloroethane (DCE) in a high-purity distillation column, is presented. This column has the highest steam flow rate in any vinyl chloride monomer (VCM) plant. A configuration using a vapor compression heat pump is proposed for improvement of the energy efficiency without having to make important process modifications. Existing and proposed configurations were implemented using the Aspen Plus™ commercial simulator; the results of the existing configuration were validated with data extracted from the plant. The objective of this work was to compare the existing configuration with the proposed one, using a thermodynamic and an economic approach.

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Section: Resultsmentioning

confidence: 99%

Exergetic and economic analysis of an industrial distillation column

Araújo

Vasconcelos

Fossy

et al. 2007

Braz. J. Chem. Eng.

View full text Add to dashboard Cite

show abstract

“…There are two main ways to calculate exergy. One divides exergy into physical and chemical components [4] and the other considers exergy as being composed of three components, namely physical exergy, chemical exergy and exergy change of mixing [5]. For the present work the latter approach was used to develop the software because it presents more advantages for composition-changing processes.…”

Section: The Exergy Conceptmentioning

confidence: 99%

“…Exergy will be calculated as the sum of three components; chemical and physical exergy and the exergy change of mixing [5]. The chemical exergy is calculated based on the socalled standard chemical exergy for the chemical elements which can be calculated from standard formation enthalpy and Gibbs energy or obtained from standard tables [6].…”

Section: Exergy Componentsmentioning

confidence: 99%

“…Thus, enthalpy and entropy changes can be calculated to obtain the exergy change of mixing, which is the contribution due to the pure components being in a mixture, at actual conditions is calculated by applying equation (5).…”

Section: Exergy Componentsmentioning

confidence: 99%

“…It is also freely available to any interested user or developer. As mentioned before, the approach by Hinderink et al [5] where the calculation of the exergy is divided into three components was implemented in the open source chemical process simulator Sim42 to create the exergy calculator. The exergy calculator performs the following steps in order to get the exergy of a material stream:…”

Section: Exergy Calculator Toolmentioning

confidence: 99%

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