The algorithm for selecting an energy-efficient secondary energy generation system for large industrial enterprises is proposed. The updated coefficients of the system use of heat and exergy and the Sankey diagram are given. The software implementation of thermodynamic calculations of complex industrial schemes with secondary energy generation devices is presented.

The possibility of using heat pump installations at thermal power plants is considered. An estimation of the sources of low-potential heat for the operation of the heat pump in the joint generation of electrical and thermal energy was carried out. The results of a comparative analysis of the schemes for the inclusion of a heat pump in the cooling system of recycled water are presented using the example of the Kirov thermal power plant.

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The model, describing a processes of convective masstransfering in a tubular electrolytic cell with the much distinguishing sizes of electrodes is proposed suitable for practical calculations. The electrochemical reactor permitting to clearing of water with the help of chemical reactions in bulk of a solution at participation of electrogenerated reagent is created.