District heating means an energy recovery technology with residential and public purpose and can achieve better thermal performance if compared to centralized systems. The core system is comprehensive by a CHP and thermally isolated pipe ducts. The heating fluid is transported along the pipe ducts (common media is steam, hot water, over heated water or cold water in the case of district cooling) to feed the consumer utilities.
The pipe network is arranged to distribute heating or cooling to the diverse utilities. Usually consisting of a closed circuit, the lay out consists of two pipe networks, one to distribute the heat and another one in the return line back to the CHP. Some good advantages are less pollution and Co2 imprint thanks to the renewable energies and better performance.
This heating arrangement is popular in public places, in example: Hospitals, CHP, sports centres, Universities and districts in residential areas.