ABSTRACT

With the development in the field of refrigeration, cooling and heat transforming systems, the vapor absorption cycles has attained its own internal dynamic in the last decade. The most common combinations of working fluid absorbent for absorption systems are water/lithium bromide and ammonia/water. LiBr aqueous solution has been the most popular choice in absorption cooling industry. In order to determine the performance of refrigeration system it is badly needed to determine the properties. In this work the thermodynamic properties (such as enthalpy, entropy, specific heat, vapor pressure, density) and the transport properties (such as thermal conductivity, mass diffusivity, surface tension, viscosity)of LiBr aqueous solutions are calculated by a program. Different authors give different correlation of these properties. The correlation of these properties is valid from 273k to 500k in temperature and for mixture composition 0 to 75 wt% of LiBr in solution.

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