A heat conversion process for generating a heating medium having a temperature required for operation from a partially cooled and partially warmed waste heat generated by a liquid-cooled reciprocating piston combustion engine; and Apparatus for embodying Karu process

摘要

The invention relates to a process of heat transformation to convert the low-temperature waste heat from cooling circuits of block-type thermal power station (BTPS) reciprocating-piston combustion engines into steam or other heating media of a temperature required for operation by adopting the principle of the high-temperature heat pump according to which the low-temperature heat produced by recooling the engine cooling circuits to their required inflow temperature required by construction is transferred to a liquid working medium, is absorbed by the working media vapors by partial evaporation, and is brought, by compressing and condensing the working medium vapors, to the temperature of the in-plant heating media and is transferred to them. It is an object of the invention to provide a heat transformation process and devices for realizing the process according to the principle of the high-temperature heat pump using mechanical vapor compression by means of which the waste heat not only of the hot exhaust gas, but also the one of a proproportion as large as possible of the low-temperature waste heat from the cooling circuits for the cylinders, the lubricating oil, and the charging air/fuel mix may be used up to a lower temperature limit to be fixed for each project by conversion into the in-plant common heating medium in a technically reliable manner and at an economical relationship between the investment and operating expenditures to the output from the recuperated energy in reciprocating-piston engine BTPS for the heat supply to commercial and industrial enterprises. This is attained by the fact that inventive connections and devices prevent a drop below the ambient pressure in the critical low-temperature range and in all of the operating conditions of the heat transformer and the energy required for vapour compression is reduced to a minimum and, using steam expansion or hot-air prime movers, is gained completely or in part from the exhaust gas content of the BTPS engine (FIG. 1).