Centralized cooling system to contribute to low-carbon economy

Source :Qianhai Communication Center

Qianhai’s centralized cooling system, which consists of 10 underground cooling stations, is expected to provide another path to develop low-carbon, energy-efficient economy in China after the 10 stations are all put into service.

The cooling system, said to be the largest of its kind in the world, can provide cooling air to 19 million square meters of public space in Qianhai such as office buildings, shopping malls and hotels. It is expected to save 130 million kilowatt-hours of electricity a year in Qianhai, equivalent to the amount generated by burning 16,000 tons of coal. The operation of the cooling system will also help reduce carbon dioxide emissions by 123,000 tons annually, equivalent to the carbon sink of about 333 hectares of forests.

Each underground cooling station cover buildings within 1.5 kilometers of its range. No air conditioners or cooling towers are needed on each building within this range, saving about 90 percent of space for conventional air-conditioning facilities.

The cooling system adopts the combination of electricity and ice storage refrigeration to cool buildings. The ice produced by refrigerating machines at night will generate cooling air during daytime, which saves energy and reduces carbon emissions to the largest extent.

The project is invested by the Shenzhen Qianhai Energy Technology Development Co. Ltd., with a total investment of 4 billion yuan (US$618.88 million).

According to Fu Jianping, general manager of Qianhai Energy, all the technologies of the cooling system are self-developed and the project has been promoted to other countries and regions by the United Nations Environment Program (UNEP).

“We have been learning from our counterparts in Sweden, France, Japan, and Singapore and working with the UNEP, to improve our management and technology to serve the whole Guangdong-Hong Kong-Macao Greater Bay Area”, Fu said.

The regional centralized cooling system was first introduced in the Hartford Project in the United States in 1961. The technology was adopted by France in 1967. Japan is the first Asian country to introduce regional centralized cooling in 1970. In 2004, Beijing piloted China’s first regional centralized cooling project in Zhongguancun.

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2021-02-23 11:00:00