METHOD TO PROVIDE HEATING LOAD IN SYSTEMS OF CENTRALISED HEAT SUPPLY Russian patent published in 2013 - IPC F24D11/00 

FIELD: heating.

SUBSTANCE: when connected to primary heating networks operating with temperature curves of 120-70°C, 130-70°C, 140-70°C and 150-70°C without use of mixing pumps, two heating subsystems formed as a result of division of a subscriber's heating system into two circulating circuits with identical thermal loads, are connected in series via a recuperative heat exchanger, which reduces temperature of network water upstream the first (along with network water flow) subsystem due to supply of return water in it from the same (first) subsystem, which, in its turn, is heated and supplied into the second subsystem. As a result of serial connection of two subsystems to a main heating network via a recuperative heat exchanger, specific flow rate doubles in terms of 1 Gcal/hr of heating load in each of serially connected heating subsystems, and separate regulation of temperature in supply pipelines of each subsystem makes it possible to optimise temperature mode of operation of each heating subsystem.

EFFECT: provision of required temperature and hydraulic modes of heating system operation.