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District energy

District heating

Boosting energy efficiency in Shangri-La

New standard for energy-efficient heat distribution in China.
1 April 2020

Shifting from inefficient individual stoves to one coherent district heating system protects the environment, spurs economic development and improves the quality of life.

District heating reduces air pollution and improves the local environment

Shangri-La is plagued by air pollution from individual stoves using fossil fuels and wood as the primary heat source among its 50,000 residents. Now air pollution is substantially reduced and protection of the local ecological environment is promoted by introducing district heating. Shangri-La is located 3,300 meters above sea level in the northwest of Yunnan Province in China. There is a substantial need for heating in Shangri-La. Daily  temperatures are low andcan vary quite dramatically in winter, from  as low as -27 °C to 1 °C.

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Implementation of the entire district heating system

A new and comprehensive district heating system is set up to supply five districts of Shangri-La. ABB supplies the equipment for the system; from the steam to water heat exchanger in the boiler room to the end user installation. This includes electrical and mechanical equipment needed to supply
sufficient heat to the citizens.

The automation and electrical solution interconnects and monitors the new heating plants for maximum efficiency, which helps providing a safe and reliable source of heat for about 50,000 residents. In addition, air-source heat pumps are installed, thereby changing from individual heat-only boilers and stoves to boilers based on CO2 free electricity from hydropower. The pumps boost the system`s energy efficiency and help improve quality of life substantially by reducing coal-fired emissions.

To ensure that the heating needs of theresidents are met, five local automation and control systems communicate with a central control and monitoring system in order to deliver enough heat in the most efficient way.

The shift from the use of stoves to the district heating systems will provide substantial environmental benefits by reducing CO2 emissions by 105,000 tonnes a year and 460 tonnes of dust a year thus, among others, saving 17,000 tonnes of coal each year. Over decades, energy-efficient and environmental friendly district heating solutions have been developed and implemented by Danish companies including ABB in the Northern part of Europe, resulting in a substantial decrease in CO2 -emssions.

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