The calculation formula for energy saving rate of the distributed circulating pump heat-supply system reconstructed respectively from conventional single-source tree heat-supply network,multi-source heat-supply network and loop heat-supply network is presented.

The system of ring-shaped heating network with multi-heat sources has its special advantage in saving energy, environment protection, reliable operation, flexible development, economical cost, etc.

The technique of multi-source network is developed in the foundation of synthesize the application of adjusting soon technique and controlling technique of pump as to economize the energy lower the system movement cost and increases economic performance in the abroad countries that have advanced in heat-supply.

Reliability assessment method of multi-heat source ring-shaped heat-supply networks;

This method affords a way to performing the calculation of multi-heat source ring-shaped heat-supply network hydrodynamic condition analysis and asymmetric heat-supply network.

Simulates largescale ring-shaped network with multi-heat sources,analyses its specific design process and directs practical running and regulation.