COGENERATION SYSTEM Russian patent published in 2005 - IPC

FIELD: thermal engineering; district heating from heat and power cogeneration systems.

SUBSTANCE: proposed system has extraction and condensing turbines, their waste steam cooling systems, heat pump units, peak heaters, and heat networks integrated by means of common delivery-water circuit so that common flow of return water is divided into parallel flows, each functioning as low-potential heat flow for heat-pump stations; each of heat-pump units of heat-pump station parallel-connected along delivery water flow affords same water cooling thereby providing for using identical design and thermodynamic cycles of heat-pump units; these thermodynamic cycles include two isobars (heat inlet and outlet) and two polytropes (working medium compression in compressor and expansion in turbine); in addition to recovered waste heat of turbine delivery water is heated by trash burning heat obtained by two alternative ways: for cogeneration power station situated outside the populated area it services incinerating plant heats water discharged from this power station which enables increasing power generated by its turbines, and when cogeneration station is located within populated area it services, water is heated downstream of condensing turbines which enhances power output of the latter.

EFFECT: enhanced competitive strength of district heating cogeneration system.

1 cl, 2 dwg