How does the city's heating system provide heat?

Urban heating system consists of heat source, heating network and heat users. Urban heating system is a heating network that uses centralized heat sources to provide heat energy for production or life to heat energy users through heating pipe networks and other facilities.

The heat source is a boiler room or thermal power plant that produces and prepares heat medium with certain parameters (temperature and pressure). Heating pipe network is an outdoor heating pipe system for conveying heat medium, which is the link between heat source and heat user and plays the role of conveying and distributing heat source. It is directly delivered to heat users through the heating network, and heat users can use or consume heat energy, such as indoor heating, ventilation and air conditioning, hot water supply and production process thermal system.

Urban central heating is one of urban infrastructure, which has comprehensive economic, environmental and social benefits of saving energy, reducing pollution and facilitating production and life. The policy and principle of central heating in urban heating is to adhere to local conditions, open up heat sources, be advanced in technology, and be economical and reasonable.

Extended data:

The types of urban heating sources in China include thermal power plants, centralized boiler rooms, decentralized boiler rooms, industrial waste heat, nuclear energy, geothermal energy, solar energy, heat pumps, household electric heaters, and small coal-fired (oil-gas) furnaces.

The hot water in the central heating pipeline is the medium for conducting heat energy in the closed circulation system under high temperature and high pressure. In order to prevent the corrosion and rust of pipes and valves and ensure the smooth circulation of water supply and return, a certain amount of chemical agents are added to the water, and the water quality meets the domestic water standard.

However, the hot water in the radiator can not be used, which will cause serious water shortage in the heating pipeline, make the pressure of the heating pipe network unbalanced, lead to unstable heating in part or all of the heating system, and affect the normal heating of other residents.

Baidu Encyclopedia-Urban Heating System