RU94028551A - Method for converting thermal energy of external heat source into mechanical energy - Google Patents

Abstract

FIELD: thermal engineering; mechanical energy production from external heat source using working medium in gaseous phase. SUBSTANCE: process cycle is closed by separating working medium that has expanded and performed mechanical work into cold and hot sections in centrifugal field. Cold section is then transferred for compression and hot section whose pressure and temperature grow in the course of separation is cooled down with part of heat acquired being conveyed for heating nonseparated working medium and expanded. Working medium separation process followed by transferring cold section for compression and hot section for expansion goes on continuously until working medium mass reduces six to ten times. Remaining portion of working medium is cooled down in cooler. When thermal energy is produced due to fuel combustion and heat of mentioned portion of working medium is used for heating blast air, heat transferred by working medium is not lost in cycle and is fully converted into mechanical work. EFFECT: improved efficiency.

Claims (1)

The method relates to a power system, in particular to methods using a working medium in the gaseous phase to obtain mechanical energy from the heat of an external source. An increase in the efficiency of the units is achieved due to the closure of the heat engineering cycle by dividing the working medium that has expanded and has completed mechanical work into cold and hot parts in a centrifugal field. The cold part is then transferred to compression, and the hot part, the temperature and pressure of which increases during the separation process, is cooled and the acquired part of the heat is transferred to heat the undivided working medium and expand. The process of separation of the working medium with subsequent transfer to compression of the cold part, cooling and expansion of the hot part is carried out repeatedly until the mass of the working medium is reduced by 0-10 times. The remainder of the mass of the working medium is cooled in the refrigerator. When thermal energy is obtained by burning fuel and when using heat of the indicated fraction of the working medium, there is no heat loss of the working medium in the cycle for heating blast air, i.e. the heat of the working environment is completely converted into mechanical work.