Modelling and testing the performance of a commercial ammonia/water absorption chiller using Aspen-Plus platform

Rami Mansouri (), Ismail Boukholda, Mahmoud Bourouis and Ahmed Bellagi

Energy, 2015, vol. 93, issue P2, 2374-2383

Abstract: A steady-state simulation model of a commercial 3-ton ammonia/water absorption chiller is developed and validated using the flow-sheeting software Aspen-Plus. First an appropriate thermodynamic property model for the ammonia/water fluid mixture is selected. To this purpose nine methods from the software library are pre-selected and tested, but none of the methods predicts the VLE (vapour–liquid equilibrium) with sufficient accuracy. The interaction parameters of these models are then determined by fitting the equations of state (EOS) to VLE data. It is finally found that the Boston–Mathias modified Peng–Robinson EOS with fitted parameters predicts most accurately the VLE for the temperature and pressure ranges encountered in commercial chillers.

Keywords: Absorption refrigeration; Ammonia/water; Thermodynamic property model; Aspen-Plus; Robur (search for similar items in EconPapers)
Date: 2015
References: View complete reference list from CitEc
Citations: View citations in EconPapers (13)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:93:y:2015:i:p2:p:2374-2383

DOI: 10.1016/j.energy.2015.10.081

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