The energy efficiency increase problem for railway rolling stock pneumatic systems compressed air preparation is directly connected with its purification and drying technology choice. In the presented materials in the article, the authors find a solution to the problem based on realization analysis of different factors that affect compressed air quality, purification and drying technology choice, as well as based on energy efficiency analysis. To realize the energy-saving events at railway rolling stock compressed air preparation, the authors suggest performing factor analysis influencing on compressed air purification method choice to consider pneumatic system as a module scheme and to employ the modernized construction of the locomotive main tanks.

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The research results presented in the article are devoted to the compressed air adsorption drying processes energy intensity reducing possibilities study. The investigation concerns the new adsorbent – composite. The material is considered as one of the most perspective at the present time. It’s ehergy efficiency is proved comparing traditional adsorbents such as silica gel, alumogel, zeolites, etc. The authors consider the bulk density as one of the factors at the adsorption process energy efficiency increase. The formulas given at the articles allow to calculate the different adsorbents bulk and apparent density, the compressor’s energy efficiency by using different adsorbents at pneumatic schemes, etc.