The need for extracting high heat from the industries has encouraged the development of Lithium Bromide-Water (LiBr-H2O) absorption based heat pump. This paper presents a simulation study of single-stage LiBr–H2O vapor absorption heat pump. The detailed thermodynamic analysis of the single-stage LiBr–H2O vapor absorption heat pump was carried out in this study. The validation of this model is performed by considering the values from the literature.The effect of cooling water on flow rates, COP (Coefficient of performance) and conductance are examined.