Original title: This provincial capital city tries out "centralized cooling", and the room temperature is around 26 ℃! Net Friend: Do you want to pay the cooling fee? 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. Recently, Jinan's "centralized cooling" has aroused concern. It is reported that the centralized cooling mode covered in the CBD area of Jinan has covered nearly 210,000 square meters of users since its trial operation last year. The whole project uses the same set of municipal pipe network for heating in winter and cooling in summer. A hotel staff said that without air conditioning, the room temperature can be kept at about 26 degrees Celsius, and the effect is very good. To this, the netizen expressed his doubt: Whether does such cooling mode save cost than air conditioning? Do I have to pay the cooling fee in the summer? A set of municipal pipe network, Winter heating and summer cooling According to the report, the centralized cooling for Jinan CBD area is the southern energy center of Jinan. The Southern Energy Center, located on Xinli Street, officially started construction in 2019 and was put into operation for the first time in 2021. The designed heating area is 6.92 million square meters and the cooling area is 2.2 million square meters. Expand the full text Photo: Lightning News The heat source of heating in winter is hot water, and the cold source of centralized cooling is chilled water, so the heat exchange station in winter becomes a "cold exchange station". Cui Yong, secretary, chairman and general manager of the Party branch of Shandong Ruiguan Electric Power Thermal Power Co., Ltd. of Jinan Energy Investment Group, which belongs to Jinan Energy Group,50l rotovap, said, "In winter, when heating is centralized, the waste heat of Zhangqiu Power Plant is used to transport hot water to CBD area through long-distance pipeline network, and then through the heat exchange station, it enters the end system of each user, such as radiators and floor heating.". In summer,wiped film evaporator, the same transmission and distribution network is used, but the cold source is switched to the Southern Energy Center. The same network for heating in winter in CBD area is used to transport chilled water to the cold exchange station located in the plot, which is actually in the same location as the heat exchange station. In this way, through cold exchange, the cold source is transported to the terminal device of each public building user. "In winter, the temperature of the water supplied to the heat exchange station is about 90 degrees Celsius, which is adjusted downward or upward according to the specific temperature.". In summer, the chilled water of about 7 degrees Celsius is transported as refrigerant (to the cold exchange station), and the chilled water of about 7-9 degrees Celsius is replaced by the cold exchange principle into the user's end air coil system to meet the user's refrigeration needs in summer. Cui Yong introduced that water is a very stable and commonly used heating and cooling medium, which is more suitable for large-scale regional central heating and cooling. At present, most of the areas using centralized cooling mode in domestic cities are located in business districts with high commercial density, such as Qianhai in Shenzhen, Guangzhou University Town, Zhongguancun in Beijing, cbd crystallization equipment ,jacketed glass reactor, etc. It is reported that three areas in Qianhai District of Shenzhen were covered by cooling last year. After the completion of the project, it will provide air-conditioning cold source services for 19 million square meters of office, commercial, hotel, school and other public buildings in Qianhai Shenzhen-Hong Kong Cooperation Zone. Photo: Lightning News Does it save cost compared with ordinary air conditioning? Can the temperature be adjusted manually? According to the report of Qilu Lightning News, the relevant person in charge of Jinan Energy Group answered the questions that were concerned and commented by the public. Question 1: Does it save cost compared with ordinary air conditioners? Answer: At present, the centralized cooling project in Jinan CBD area mainly serves the users of office buildings, hotels, commercial complexes and other public buildings in the area, and the cooling fee settlement adopts the meter-hanging metering method, which is settled according to the cooling capacity. Only when the user uses it will the cost be incurred, and no cost will be incurred if it is not used. Compared with the construction of air-conditioning equipment by themselves, the use of centralized cooling by such users not only reduces the land occupied by the computer room and the roof of the cooling tower, but also reduces the cost of increasing the capacity of the building for air conditioning and refrigeration, and there is no air-conditioning external hanging machine, etc. According to the analysis of actual operation data, for super high-rise buildings over 200 meters, The construction and use cost of centralized cooling is lower than the cost of separate air-conditioning units in buildings, and for general commercial buildings, the construction and use cost of the two is equivalent. (Jinan Energy Group will also launch centralized cooling service for high-end residential users in the later period. Considering the comfort and economy of residential users, it will adopt two forms of 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 to provide cooling service for residents in summer.). Question 2: Is there water droplets in the pipe? Answer: In summer, cold water in the pipeline will inevitably lead to condensation on the pipe wall. In view of this phenomenon, good pipeline insulation measures are generally taken to reduce the occurrence of condensation. If the user's room is in the form of radiator or floor heating, it is not suitable to be used as a cooling device at present. The terminal cooling device is generally fan coil equipment, and the fan coil is equipped with a condensate collection system to discharge the condensate outside the building, which will not affect the user's experience. Question 3: In terms of energy conservation and emission reduction, how to achieve carbon dioxide emission reduction? Answer: All refrigeration equipment on the user side is centralized in the energy center, which reduces the scale of refrigeration units in each single building in summer. Cooling towers, air conditioning units and other cooling facilities no longer appear on the user side. On the one hand, it reduces the floor area of the building room and reduces the noise pollution of the equipment; On the other hand, it saves the overall investment of the building, reduces the capacity of power distribution, and improves the overall quality of the beautiful appearance of the building. Every household has to emit "carbon" in life. In household electricity consumption, carbon dioxide emissions (kilograms) are equal to the power consumption multiplied by 0.785. For thermal power units using fossil fuels, using 100 kilowatt-hours of electricity is equivalent to emitting about 78.5 kilograms of carbon dioxide. With the implementation of this project, on the one hand, 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 efficiency of high-efficiency and energy-saving units used in centralized cooling is higher, so as to achieve carbon dioxide emission reduction. Question 4: Is it possible to adjust the temperature manually? Answer: At present, the cooling facilities at the end of the service users are all in the form of fan coil units, which are equipped with temperature control panels. Users can adjust the indoor temperature according to their own needs to meet the cooling needs. Editor | He Xiaotao Du Hengfeng Proofreading | Wang Yuelong Daily Economic News Comprehensive Lightning News, New Yellow River, etc. Daily Economic News Daily Economic News Return to Sohu to see more Responsible Editor: (function() { function getBrandHtml() { var brands = [],thin film distillation, html = ''; for(var i = 0; i < brands.length; i++) { var brand = brands[i]; if(brands.length i+1) { html+= ''+brand.name+''; } else { html+= ''+brand.name+'、'; } } return html; }; if(document.getElementById('linkBtn')){ document.getElementById('linkBtn').onclick = function() { $('#brands').removeClass('brand');$ ( '# tipInfo').text ( 'Real name responded'); $ ('#linkBtn').remove();$ ('.real-response .content').css('line-height', '20px');$ ('.real-response .time').css('line-height', '20px'); }; document.getElementById('brands').innerHTML = getBrandHtml(); }; })();。 toptiontech.com