Supplementary data and results of the application of a proposed approach of the characteristic equation method in a thermodynamic simulation for different single-effect lithium bromide/water (LiBr/H2O) absorption chillers

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A proposed approach of the characteristic equation method presented in a previous study (Fischer et al., 2020) was thermodynamically simulated for six different LiBr/H2O single-effect absorption chillers in a more recent study. The input data of the internal parameters of each absorption chiller, which are all the overall heat transfer conductances (UA) and the internal mass flow rate of the weak solution of the absorption chiller were collected in the literature (Boudehenn et al., 2014; Fischer et al., 2020; Martínez et al., 2016; Herold et al., 2016; Gommed and Grossman, 1990) The input data of the temperatures and mass flow rates of the external water circuits were selected from the usual nominal temperature ranges were found in the literature. Figure 1 presents the single-effect lithium bromide/water (LiBr/H2O) absorption chiller with its components and temperature points numbered. The numbers in this figure correspond to the chiller points in the study as well. The values of the input data of the internal parameters of each absorption chiller are shown in Table 1. The chiller Tables present the values of the input data of the temperatures of the external water circuits and the main results of the simulation. The figures of the graphs present the distribution of the points of the results of the simulation. References: Fischer, Y., Dutra, J. C. C., Rohatgi, J. (2020): Thermodynamic modelling of a LiBr-H2O absorption chiller by improvement of characteristic equation method. International Journal of Refrigeration, vol. 120, pp. 420-429. Boudéhenn, F., Bonnot, S., Demasled, H., Lazrak, A. (2014): Comparison of different modeling methods for a single effect water-lithium bromide absorption chiller. Proceedings of the International Conference on Solar Energy and Buildings, Aix-les-Bains, France. Martínez, J. C., Martinez, P. J., Bujedo, L. A. (2016): Development and experimental validation of a simulation model to reproduce the performance of a 17.6 kW LiBr-water absorption chiller. Renewable Energy, vol 88, pp. 473-482 Herold, K. E., Radermacher, R. Klein, S. A. (2016): Absorption chiller and heat pumps. CRC Press, New York, 2nd ed. Gommed, K., Grossman, G. (1990): Performance analysis of staged absorption heat pumps: water-lithium bromide systems. Ashrae Transactions, vol. 96, part 1.

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