When it comes to this summer, most people's impression will be one word - "hot". According to the meteorological data released by the authoritative website NOAA, this summer, extreme high temperatures will continue, and the temperature above 30 °C in the mainland has gradually normalized, and some areas have taken the lead in breaking through 40 °C high temperature. The "long standby" of the hot summer climate makes people miserable, and they just want to hide in an air-conditioned room and feel the oncoming air.
Under the invasion of high temperature and heat wave in summer, air conditioning has long become the "just need" of office people, however, the high-frequency use of air conditioning will bring greater power load to the power grid everywhere, and long-term use will inevitably bring greater energy consumption. Some people will not think that in the cold winter, the "central heating" in the north can make the building buildings with a radius of 100 miles "like spring in all seasons", if the "central cooling" is carried out in the hot summer, won't you be able to feel the cool breeze temperature indoors without air conditioning?
In fact, the mainland has already begun to carry out pilot work on central cooling in some areas. What exactly is central cooling? How is it supposed to be implemented? Let's read on with doubts.
What are the characteristics - intensive land use, intelligent control
Central cooling, as the name implies, is a cooling mode that has a large impact range and can be intelligently controlled like central heating. As early as 2021, Jinan's central business district began the pilot work of centralized cooling, and by the summer of 2022, it has covered 210,000 square meters of users such as office buildings, office buildings, large-scale commercial complexes, and hotels. Central cooling is significantly different from traditional air conditioning, it is not a huge "central air conditioning" that can accommodate tens of thousands of square meters, but a new refrigeration technology.
The traditional source of air conditioning is air, which discharges indoor heat into the outdoor air through compressors and freons. Due to the large number of urban residents, the long-term use of air conditioning will lead to poor air circulation in urban buildings, which is easy to produce heat island effect, which will continue to bring high temperature to the city and cause a vicious circle. The central cooling technology is to place pipelines inside the building, and supply cold water to the pipelines distributed in the building through the central chiller, and the circulation of cold water promotes the drop of room temperature to achieve the purpose of refrigeration. Nowadays, the central cooling system in Anhui, Henan, Sichuan and other regions has been gradually put into operation, compared with the traditional air conditioning, the central cooling technology has the characteristics of intensive land use, peak shifting and capacity reduction, high efficiency and energy saving, intelligent management and control, which can improve the system economy while ensuring safety and stability.
It is important to note that not all complexes are suitable for central cooling. Due to the use of large-scale advanced and efficient chillers, central cooling is suitable for high-density commercial buildings or areas with regular energy demand, such as urban central business districts, but not for low-density commercial buildings or areas with irregular energy demand, such as low-rise buildings or residential areas below 200 meters.
How to implement - high-quality water pumps as the "energy core"
The pipe network in the central cooling system uses water as the medium, and good water circulation performance is the key to determining the operation effect of the central cooling system, so the water pump that can transport liquid is the "energy core" of the central cooling system. The diaphragm metering pump is one of the high-efficiency water pumps worth choosing.
The diaphragm metering pump has stable performance and long battery life, which can ensure the stable delivery of cooling circulating water, continuous cooling of the pipe network system, and long-term heat exchange with the outside world. At the same time, the metering pump is small in size and light in structure, which greatly saves installation space. Its built-in pump head configuration, matching pipeline accessories and other options can be customized according to the actual working conditions to achieve integrated assembly.
The diaphragm metering pump is a cooling circulating water transfer pump, which can realize the precise control of water transmission. The real-time flow control system cooperates with ice cold storage and water cold storage design, which can make full use of peak and valley electricity price difference cold storage and peak regulation to achieve peak shift capacity reduction, energy saving and emission reduction.
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