power engineering 3 steam boilers 2 industry 2 heat-generating plants 2 biomass 1 cooling mechanisms 1 machinery for power engineering 1 more ... fluid boilers 1 cogeneration of electric power and heat 1 qualification of employees 1 environment protection 1 professional training 1 fuels (chemistry) 1 steam power stations 1 gas mixtures 1 industrial buildings 1 regulation 1 combustion 1 temperature 1 fuel oils 1 coal 1 college education 1 technological institutes 1 teaching aids 1 environmental pollution 1 heat supply 1 environment 1 less ...