There is central heating in cold weather, so we will come out for central cooling this time. It is reported that the CBD (Central Business District) in Jinan, Shandong Province has recently begun to implement the centralized cooling mode, which has covered users such as office buildings, hotels and commercial complexes, with an area of almost 2 1 10,000 square meters.
This pilot area uses the same municipal pipe network, providing heating in winter and cooling in summer. It is said that the indoor temperature can be kept at about 26℃, and the cooling fee can be settled according to the cooling capacity, and the watch is hung. No need, no cost.
The equipment at the user end is in the form of fan coil unit with its own temperature control panel. Users can adjust the indoor temperature according to their own needs.
In principle, this is similar to central heating, conveying hot water and cold water.
According to the data, Jinan central heating equipment is located in the "Southern Energy Center" of Huayang Road. In an underground building, there is a refrigeration "air conditioner" 2 1 m underground, which is known as the largest "cold and heat supply" system in northern China. It is said that this kind of equipment can output cold water of about 7℃ and then deliver it to users' indoor pipes, and basically it can use the heating pipes in winter to deliver cold water to users' homes before starting.
In fact, Jinan's "centralized cooling" is not the first case in China. For example, Guangzhou University Town, Shenzhen Qianhai, Shanghai Hongqiao, Beijing Zhongguancun Science Park and other areas have adopted the mode of district cooling, and have also been put into operation.
Some netizens said, "I used to envy the heating in the north in winter, but now I want to envy people having air conditioning in summer."
When it comes to central cooling, everyone will definitely think of air conditioning. What advantages does this have over air conditioning?
First of all, the use and cost of equipment are greatly reduced. As mentioned above, the client will be equipped with a fan tray system. In addition to this equipment, other refrigeration equipment is in the cold energy supply center, and heating pipes can be used in winter. There is no need for central air conditioning, air conditioning plug-ins and other equipment. In this case, the scale of refrigeration unit is greatly reduced in summer, saving the equipment area. Compared with ordinary air conditioners, the energy consumption is much lower and the refrigeration noise is also reduced.
The second is the advantage of using cost. Compared with the traditional cooling mode, according to relevant data, central cooling can save about 10 yuan per square meter and 1000 yuan for indoor space. The centralized cooling area in Jinan this time is 2 10 square meter, which can save more than 2 million!
Moreover, this mode will be more in line with the future electricity consumption concepts of peak shifting and peak shaving and valley filling, and can use low-temperature electricity at night to create a low-temperature cold source and reduce operating costs.
Also, this model is more environmentally friendly, because the main refrigerant of central refrigeration is lithium bromide, which is a very environmentally friendly inorganic substance, much more environmentally friendly than air conditioning refrigerant Freon. Centralized cooling is a pollution-free cooling method, which is naturally more environmentally friendly.
Of course, centralized cooling also has defects. At present, the construction cost is high and it is not suitable for industrial production or residential use. And according to the current situation, it is only used in the north.
The centralized cooling mode implemented in Jinan this time should be regarded as a trial stage. If the scale is further expanded in the future, the effect is good, and I believe it will be promoted to the whole country.