We propose in this work a thermodynamic feasibility study of absorptiondiffusion refrigerating machine working with hydrocarbon mixtures. We used a machine of low power (300 W) that operates with generator temperatures lower than 150 degrees C (fossil energy or solar energy can be used) and where the condenser and absorber temperatures are taken equal to 42 degrees C. The inert gas used is helium and the total functioning pressure is about 17.5 bars. A modeling on suitable software was made to simulate the machine functioning for four binary mixtures which are: propylene/hexane, propylene/heptane, propylene/octane and propylene/nonane. The validation of our model was made by comparison with the results taken from literature and the optimal operating conditions are determined. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.