The application of Freon technologies at heat power stations
As confirmed by global trends, heat power plants that use low boiling working fluids as the Rankine cycle working medium have important advantages. The description and efficiency indices of two power units which can be used at heat power stations for increasing their efficiency are given in the paper. In both cases a Freon circuit is built into a traditional power plant layout. One of the units is a condensation steam-water power unit with a low-temperature reaction mass circuit, which is built in the thermodynamic cycle for heat dissipation and which can provide extra electricity generation. The second unit is a power unit in a combined heating sys-tem with a gas network heater Freon thermotransformers are used as intra-power plants. This scheme makes it possible to switch to a low-temperature regime of direct and return heating system water, which improves the quality of the heating system maintenance, reduces the cost and enhances the efficiency of consumer heat supply. When studying the efficiency of the unit, Freon R-134a was chosen as a working medium. The selection of R-134a is determined by its ozone-safety, its availability and wide use on the Freon technology market as well as a wide application of compressor equipment based on this medium. The paper presents the description of schematic diagrams of the units, formulae of efficiency calculation, efficiency values and structural layout parameters of Freon circuits. The conclusion shows advantages of Freon technologies that use on Freon R-134a as a working medium.