Original Title: Trial Implementation of "Centralized Cooling" in One Place in China, Room Temperature 26 ℃ Without Air Conditioning In the winter of ice and snow, central heating makes people feel "warm as spring". In the hot summer, if centralized cooling can be achieved like central heating, the "happiness index" of the dog days may be greatly improved. In fact, Jinan CBD area has begun the trial operation of centralized cooling mode, and now it has covered about 210000 square meters of public construction users such as shopping malls and office buildings in this area. Some hotel staff said that the room temperature can be kept at about 26 C without air conditioning, and the effect is very good. It is worth mentioning that summer cooling and winter heating share a set of pipe network system, through the role conversion of "heat exchange station" and "cold exchange station", switching "heating" or "refrigeration" mode. In the future, the centralized cooling business is expected to enter the homes of residential users. It is estimated that 500,000 square meters of cooling area will be put into operation next year. Located in Longhu Tianjie, Olympic Sports West Road, the room is cool and comfortable. The cold air comes from the air outlet at the top of the mall, which can be adjusted through the control panel on the wall. The seemingly "ordinary" cooling system is actually "hidden mystery". The air conditioning in this shopping mall does not come from air conditioning, but benefits from "centralized cooling". The "cold source" it uses is the southern energy center a few kilometers away. The southern energy center is built by Jinan Energy Investment Holding Group, which belongs to Jinan Energy Group, to provide central heating and cooling services for the whole CBD area of Jinan. Cui Yong, secretary, chairman and general manager of the Party branch of Shandong Ruiguan Electric Power Thermal Power Co., Ltd., which belongs to Jinan Energy Investment Group, introduced that the energy center has covered about 210000 square meters. The main service objects are office buildings, office buildings, commercial complexes and other public construction users in the CBD area. With the acceleration of the construction of the whole Jinan Central Business District, more buildings, including five super high-rise buildings of "Mountain, Spring, Lake, River and City", will be put into use after next summer. At present, the cooling area of all CBD cooling projects signed with Nengtou Group is 1.1 million square meters, and it is expected that 500,000 square meters of cooling area will be put into operation next year. In addition to the Southern Energy Center that has been put into operation, the Northern Energy Center will be put into operation in the future according to the cooling demand of CBD. Expand the full text "These two energy centers are mainly responsible for the summer refrigeration task of 2.2 million square meters of public construction users in the whole CBD area, and the heating area of the whole area in winter is about 7 million square meters.". Through the preliminary planning and government departments, Nengtou Group has reached a consensus, starting from the drawing review stage of the whole CBD building construction, to do a good job in the docking of the whole area and the next step of the integration of cold and hot municipal pipeline network. Cui Yue introduced. Water cooling is used for cooling, and the same pipe network is used for heating According to Cui Yong, the central cooling and heating of the Southern Energy Center use the same pipe network system, which is the largest in the field of cold and hot supply in northern China. Our organization estimates that after the cooling area of the whole project reaches 2.2 million square meters, about 120000 tons of carbon dioxide emissions can be reduced annually, which is equivalent to the carbon emissions generated by air conditioning and refrigeration of 10000 households in summer. Cui Yue said. Specifically, for thermal power units using fossil fuels, using 100 kilowatt-hours of electricity is equivalent to emitting about 78.5 kilograms of carbon dioxide. For centralized cooling projects, on the one hand, cbd crystallization equipment ,hemp extraction centrifuge, the installed capacity of centralized refrigeration equipment is much lower than the sum of refrigeration equipment built by users themselves, on the other hand, the high-efficiency and energy-saving units used in centralized cooling are more efficient, so as to achieve carbon dioxide emission reduction. The same pipeline network system can undoubtedly save the cost of repeated construction and space resources. So, how to switch between "cooling" and "heating" modes? In fact, the medium in the pipe network is always water, and cooling or heating depends on the temperature of the water. When heating in winter, the waste heat of Zhangqiu Power Plant transports hot water to CBD area through long-distance pipeline network, and then through the heat exchange station, it enters the terminal system of each user, such as radiator, floor heating, etc. During centralized cooling in summer, the heat exchange station in winter becomes a cold exchange station. After the transmission and distribution network is switched to the "cold source" of the Southern Energy Center, the chilled water is transported into the cold exchange station. After cold exchange, the chilled water at 7-9 degrees Celsius is transported to the terminal air coil system of each public building user. At present, Jinan Energy Investment Group is upgrading the ice storage system in the Southern Energy Center. After completion, it can use night off-peak electricity to manufacture low-temperature cold source to further reduce operating costs, which is also in line with the development strategy of peak staggering, peak shaving and valley filling. In the next step, we will take the idea of crossing Jingshi Road in the south, South Industrial Road in the north, extending Maoling Shanxi District in the west and Jinan High-tech Comprehensive Business District in the east, and take Jinan Central Business District as the center to promote the centralized cooling business around, so as to expand the promotion of the centralized cooling business by the group company. Cui Yue said. Residential users are expected to use centralized cooling in the future It is understood that since the 1980s, some foreign commercial buildings and university campuses have been using regional cooling methods, such as La Defense CBD in France. At present, Shenzhen Qianhai, Guangzhou University Town, Beijing Zhongguancun and other commercial districts have also begun to use the centralized cooling mode. For office buildings, hotels, commercial complexes and other public building users, compared with their own construction of air-conditioning equipment, centralized cooling not only reduces the floor area of the machine room, the floor area of the cooling tower roof, but also reduces the cost of power capacity increase for air-conditioning refrigeration in the building, and there is no air-conditioning external hanging machine. According to the analysis of actual operation data, the construction and use cost of central cooling is lower than that of single air conditioning unit for super high-rise buildings over 200 meters, and the construction and use cost of central cooling is equivalent to that of general commercial buildings. According to reports, the current centralized cooling terminal cooling device is generally fan coil equipment, fan coil has its own condensate collection system, the condensate will be discharged out of the building, to avoid the impact on the user's experience. At the same time, the equipment has its own temperature control panel, users can adjust the indoor temperature according to their own needs. If the user's room is in the form of radiator or floor heating, it is not suitable for use as a cooling device. Can central cooling cover residential users in the future? It is understood that Jinan Energy Investment Group will also promote centralized cooling business for high-end residential users. In terms of charging, considering the comfort and economy of residential users, the charging method will adopt two forms: charging by area or charging by cooling capacity. The pricing standard in the later period will follow the principle of not higher than that of public construction users, so as to provide residents with cooling services in summer. Netizen: Suggest promotion What do you want to say? 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