FIELD: power industry.
SUBSTANCE: invention relates to power engineering. A thermoelectric energy accumulation system includes a heat exchanger containing a thermoaccumulating medium, and a working medium circuit for pumping of the working medium through the heat exchanger, by means of which heat exchange is performed between the working medium and the thermoaccumulating medium. At heat exchange with the thermoaccumulating medium the working medium is subject to transcritical cooling in a charging cycle and to transcritical heating in a discharging cycle. The improved efficiency of a closed cycle is achieved owing to minimising in working cycles of maximum temperature difference, between temperature of the working medium and the thermoaccumulating medium. Besides, according to this invention, an accumulation method of thermoelectric energy in the system is presented.
EFFECT: invention allows increasing efficiency of a closed cycle.
7 cl, 5 dwg
