CENTRALISED HEAT SUPPLY SYSTEM AND METHOD Russian patent published in 2009 - IPC F24D3/00 

FIELD: heating system.

SUBSTANCE: invention refers to centralised heat supply systems and methods involving thermal pump plants. Centralised heat supply system consists of steam boiler with furnace chamber and gas ducts wherein there located are steam heating surfaces connected via steam turbine or in a direct manner to system water heaters, direct and return system water circuit, heating system circuit with thermal pump plant arranged at thermal point. The condenser outlet of thermal pump plant is connected to final heat transfer stage of the heating system circuit, and the evaporator outlet of which is connected to the return cooled system water returned to the system heaters to be heated. Return cooled system water circuit is equipped with at least one well for accumulating excess cooled system water under the ground, and for pre-heating cooled system water with exit gas heat by using evaporation heat there additionally installed in the boiler gas duct is the system economiser, as well as for accumulating the system water heated in the system economiser during inter-heating period and/or heated in system heaters, the direct system water circuit is equipped with at least one heat-insulated pond. Centralised heat supply method is described as well.

EFFECT: increasing utilisation degree of fuel energy for heating heat carrier based on the complex technology involving intensive heat utilisation of exit gases by using evaporation heat, additional removal of emissions from them, increasing degree of heat transfer to consumer.

15 cl, 1 ex, 1 dwg