INDIVIDUAL HEATING UNIT OF SUB-ATMOSPHERIC HEATING SYSTEM Russian patent published in 2019 - IPC F24D1/00 

FIELD: heat supply.

SUBSTANCE: invention relates to the field of heat supply. Individual heating unit with independent heating system, connected to centralized heat supply system, is intended for the steam production in medium with negative pressure (vacuum) for sub-atmospheric (vacuum-steam with the negative pressure controlled depth) heating systems mounted in residential, public, industrial buildings and structures. Individual heating unit of sub-atmospheric heating system includes subsystems: the intermediate (primary) heat carrier, the superheated water intake and flow metering, secondary heat carrier, the steam production, the individual heating unit of piping and equipment inner cavity evacuation together with the facility rooms heating system, condensate return from the rooms heating system to the grid water return pipeline, at that, the condensate evacuation and return subsystems operate independently and in periodic mode.

EFFECT: proposed IHU allows to implement both the steam temperature quantitative control, and central qualitative one; consumes minimum amount of grid water for steam generation; to minimize the electric energy consumption by the condensate evacuation and return subsystems.

1 cl, 1 dwg