2. Energy saving in heat-and-power engineering and heat supply 2.1. Technologies and burners for co-combustion of anthracite culm and natural gas. 2.2. Small cost reconstruction of hot-water boilers of heat capacity 50 and 100 giga calories for efficiency and life time raising and ecological rates improvement. 2.3. Energy- efficient technologies for nitrogen oxide emission decrease at the power stations and high power boiler plants. 2.4. Series AOM gas-fired unit heaters. 2.5. Contact water-heaters for distributed heating and hot-water supply. 2.6. Reconstruction of NIISTU-5 boilers in order to increase the efficiency of natural gas combustion. 2.7. Combined-cycled plant at “AQUARIUS” technology. 2.8. Energy-saving system for industrial premises and large dimension objects heating. 2.9. Small cost reconstruction of hot-water boilers ТВГ and КВГ with the object of efficiency and life time raising and ecological rates improvement. 2.10. Technology of burning components dilution from waste gases. 2.11. Contact water heaters with a filling. 2.12. Energy-saving technology and equipment for thermal utilization of contained in water organic compounds.