[en] An efficient method of high-temperature burning of inferior coal is proposed. The method involves using the high-temperature fluidized-bed. Being in random motion, the solid particles are crushed into finer and finer ones at high temperature in the fluidized bed, which eliminates the need in preliminary crushing of solid fuel. (author)

[en] The circuit diagram of efficient use of high-potential heat energy and the procedure of its assessment are discussed. Ready-made devices are considered as parts of the step-down transformer; for example, as a loadbearing element, a thermal engine produced by TEDOM Company is used, the shaft of this engine being directly connected to a steam-compression refrigerating machine. The calculation results show that, in this case, the heat-transformation coefficient makes up 1.9-2.35. This means that the consumption of fuel will be cut in half as compared to a common heating plant. (author)

[en] A design of the heat generator which allows efficient burning of impure and inferior coal is proposed. The design meets strict ecological norms on the emission of sulfur oxides due to feeding of limestone at the initial stage of their formation and on the NO_x emission into the environment. (author)

[en] A brief review of the methods of combustion of low-reaction solid fuel is presented. The advantages and the drawbacks of these methods are assessed. Their applications are discussed. The advantages of solid fuel combustion by using the fluidized bed are justified. (author)