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,
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, 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 ,nutsche filter dryer, 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.
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