Sensitivity analysis of absorption cycle fluid thermodynamic properties

Absorption heat pump technology may be improved by new cycle configurations by new working fluids. In this study, the effect of hypothetical working f luids on performance improvement is explored. The performance of two cycles is studied using three fluid property sources for ammonia/water, i.e., cur ve-fit experimental data, an ideal solution model, and the Peng-Robinson eq uation of stare model. The models require only minimal fundamental thermody namic property, data for the two pure components, This allows investigation into the influence of each fundamental property on cycle performance, prov iding insight into desirable properties for new absorption fluid pairs. Var iations of fundamental fluid properties are used as input to the models, sh owing that the volatilities of the refrigerant and absorbent have the great est effect on cycle performance.