Abstract
The heat capacity data for working fluids are one of the most important basic properties for the research and the design of absorption refrigeration and heat pump systems. Heat capacities of the water + lithium chloride + lithium nitrate (salt mole ratio 2.8:1) system were measured in the range of temperatures from 283.15 to 433.15 K and in the range of absorbent concentrations from 9.1 to 63.5 mass %. The measurements of heat capacity were made with two separate experimental apparatus for individual temperatures below 343.15 K and above 353.15 K. An empirical formula for this ternary system was obtained as a function of absolute temperature by a least-squares method from these experimental data. Maximum and average absolute deviations between these experimental data measured with two apparatus and the calculated values from this empirical formula were 0.97% and 0.35%, respectively.
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