OPERATING METHOD OF CLOSED HEAT SUPPLY SYSTEM Russian patent published in 2012 - IPC F24D3/08 

FIELD: power industry.

SUBSTANCE: operating method of closed heat supply system, according to which delivery water is prepared at CHPP and directed via supply pipeline of heat supply system through heat station to pipelines of consumer heating and hot water supply systems; delivery water temperature is controlled in supply pipeline of heat supply system at CHPP depending on ambient temperature as per the central quality control chart; delivery water returned from consumers via return pipeline is supplied to CHPP; water meant for hot water supply is subsequently heated in surface heater of lower stage with delivery water from return pipeline of heat supply system, then, in heater of upper stage and delivered to consumers; at that, temperature of delivery water at CHPP is controlled during the whole year without lower break of temperature chart; water delivered to hot water supply is additionally heated after surface heater of lower stage to the required temperature in condenser of heat pump unit, which is used as heater of upper stage, and as low-potential heat source in evaporator of heat pump unit there used is delivery water from return pipeline of heat supply system after surface heater of lower stage in flow direction of delivery water.

EFFECT: increasing economy of closed heat supply systems owing to using low-potential heat from return pipeline of heat supply system for heating of water supplied to hot water supply; decreasing the temperature of delivery water in supply and return pipelines and increasing the electric power output from heat consumption.

1 cl, 2 dwg