Can "regional concentrated cooling" be effective in high temperature attacks?

Xinhua News Agency, Beijing, September 23rd: Can "regional concentration of cooling" can effectively respond to high temperature attacks?

Xinhua News Agency "Xinhua View Point" reporter

This summer, it continues to be high -temperature weather in many places, and the cool summer of "long standby" is impressive. Reminders from the meteorological authority and research experts show that in the future, we are likely to face the "hotter" situation of the earth. After the summer of 2022, how can we cope with the high temperature weather in the future or coming?

The "Xinhua View Point" reporter found that office buildings and office buildings in Jinan, Shenzhen, Sanya, Guangzhou and other cities began to explore "regional concentration of cold supply". Perhaps, "regional concentration of cold" can be one of our options to deal with "heat waves".

"Regional concentration of cooling" has been exploring and practicing in many places

Recently, the reporter walked into a hotel located on Jiefang East Road, Jinan City. Compared with the high temperature of 36 degrees Celsius outdoors, the room temperature of 26 degrees Celsius was cool and comfortable. The air -conditioning of this hotel does not come from the air conditioner, but thanks to the concentrated supply of cold. The "cold source" it uses is the southern energy center of Jinan City, which is two kilometers away.

The southern energy center built by Jinan Energy Investment Holding Group, which is affiliated to Jinan Energy Group, is currently the largest project in the northern region in the northern region. It provides centralized heating and cooling services for the Jinan Central Business District (CBD) area. Since the trial operation last year, it has covered about 210,000 square meters of cold supply area. The main service targets are public construction users such as office buildings, office buildings, and commercial complexes in the area. It is expected to reach 500,000 square meters next year.

The reporter's interview learned that the so -called "regional concentrated cooling" refers to setting a centralized refrigeration station in a certain area to prepare the cold source to replace the decentralized refrigeration system built by the public buildings, and then the freezing water is transported into the pipeline network to transfer and switched into switching into the exchange. Cold stations, after cold exchange, transport frozen water about 7 to 9 degrees Celsius to the end wind disc system of each user.

In the southern region, due to the long -term existence of cooling demand in summer and large magnitude, concentrated supply of cold in many cities has risen. As a new city new city in Shenzhen, Qianhai planned and constructed 10 cold stations and 90 kilometers of municipal cold pipeline networks within the region to provide 15 million square meters of cold services. One of the world's leading regional cooling systems.

"Qianhai has listed 'regional concentration of cold' as a public cause and incorporated into municipal public facilities. At present, 3 cold stations have been put into operation. Fu Jianping, general manager of the limited company.

In Hainan, the Sanya Low -Carbon Smart Energy Comprehensive Utilization of the Haitang Bay Demonstration Zone Project in September 2021 provides centralized cooling services for public buildings in the Haitang Bay area. At present, the first phase of the project has 1.3 million square meters of cold supply capacity. Come and more hotels to join the concentrated -cold team.

In addition, Guangzhou University Town, Beijing Zhongguancun and other areas have also begun to use concentrated cooling models. Liu Qiang, deputy dean of the Northern Engineering Design and Research Institute Co., Ltd., said that the new campus and Shijiazhuang Vocational Education Park they participated in the design of Hebei University also adopted Central Cold Station. Many places such as Shenzhen Bay Super headquarters and Guangzhou Financial City are also planning or constructing concentrated cooling projects in the early stage.

The utilization rate of energy pipeline network increases, and the cost is relatively reduced

The reporter's interview found that concentrated supply of cold supply has the characteristics of intensive land, efficient energy saving, peak -decreasing, and effectively avoiding repeated investment. It is more suitable for promotion and application in high -density concentration in commercial buildings such as cbd cbd.

Fu Jianping said that according to the traditional method of cooling, commercial and office buildings generally adopt a self -built central air -conditioning supply. Each building needs to set up a large area of ​​refrigeration machine room and build a set of cooling towers on the top floor. The "regional concentration of cold supply" promoted by Qianhai will be concentrated in the underground and roof of a public space of the refrigeration machine room and cooling tower of the building within a range of not more than 1.5 kilometers to achieve land intensive use.

The efficiency of high -efficiency energy -saving units adopted by concentrated cooling supply is higher, and carbon dioxide reduction is achieved. Zhang Xueqian, general manager of Jinan Energy Investment Holding Group, said that according to calculations, the regional cooling system is about 12.2 % compared to the central air -conditioning energy saving of the central air -conditioning, and the first energy utilization rate is higher and the carbon emissions are lower. After Jinan's CBD concentrated -in -cold supply area reaches 2.2 million square meters, carbon dioxide emissions of about 120,000 tons can be reduced each year.

In the northern cities, the same tube network system is concentrated and concentrated heating, which greatly saves repeated construction costs and spatial resources. Zhao Lintong, who was the person in charge of the cold supply project of Taiyuan City, said that after the start of the cold supply, the pipe network of the heating system can also play a role in summer, which improves the utilization rate of the pipe network system.

The price problem of concentrated cooling also attracts much attention. The relevant government departments of the Economic South City have jointly studied, and the charging model of concentrated cold supply in Jinan CBD has implemented the two systems of "access fees+metering cold prices". At present, users generally choose to access 110 yuan per square meter, and measure the cold price per kilowatt -kilowatt. At 0.63 yuan. "The concentrated supply of cold charges is settled according to the cooling amount, and the meter is measured. If there is no fee without use, worry -free and money." Said Zhang Zihao, the comprehensive department of the Hotel Management Company of Shandong Port Logistics Group.

In the past, Haizhuang Financial Center was an example. The concentrated cold building area of ​​this office building was more than 120,000 square meters, calculated based on the access fee of 135 yuan per square meter and 0.56 yuan per kilowatt -hour usage. A total of 17.11 million yuan, saving more than half compared with the self -building; the annual cold fee is about 13.63 million yuan, which can save about 380,000 yuan. Strengthen planning and guidance according to local conditions

Can the concentrated supply of cooling enter the home of ordinary people? Shi Guanghui, director of the general scheduling room of Taiyuan thermal Group, said that residents' users have strong cold demand for cold needs. Concentration of concentration is generally not satisfied. At the same time, the number of users, occupancy rates, and use time are important factor affecting the concentrated supply of cooling into the residential area. For the built -up buildings, due to the high cost of secondary reconstruction, the cost factors will also "dismiss" most users. Fu Jianping believes that if you can find a lower -cost concentrated cooling method, the future residence can also be included in the concentrated supply of cold supply.

Bai Shouyue, Secretary -General of the Regional Energy Professional Committee of the China Construction Energy Conservation Association, said that compared with centralized heating, the concentrated supply of concentration in my country is still a new thing. Given that the centralized investment entities that concentrate their cooling operations have a large early investment and long return on investment, relevant encouragement policies can be studied to promote the promotion and use of centralized supply.

It is understood that Taiyuan City, Shanxi Province, was concentrated in 2000. It involved three places including Taiyuan Railway Station and Taiyuan Public Security Bureau. At the end of August. However, after 14 years of operation, due to various reasons such as the transformation and upgrading of the cold source power plant and the increase in the area of ​​cold supply, it was suspended in 2014.

Experts believe that concentrated cooling must be planned first. As a public product, government franchise is required. During the urban planning process of the new district, planning should be placed simultaneously, and the cold station equipment, cooling tower, cooling pipeline and other matching design should be matched with industrial planning, construction planning, and municipal planning. Economic Effects.

In addition, localities should formulate unified charging standards in accordance with factors for cold supply and economic development. Introduce support policies, actively guide the owners of the building around the cold station to choose to use the concentrated supply of cold supply to improve the continuous operation capabilities of operators, and standardize the orderly development of the industry. (Reporter Wang Zhi, Xia, Zhao Ruixi, Wang Hao, Wang Min)

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