A daytime cooling release method and system for regional end-users

Abstract

The present disclosure provides a daytime cooling release method and system for regional terminal users. The daytime cooling release method includes: dividing each area into several cooling release zones; summarizing the daytime cooling release capacity of all cooling storage facilities in each cooling release zone, and comparing the difference in daytime cooling release capacity in adjacent cooling release zones; borrowing the daytime cooling release capacity or the daytime cooling capacity of other cooling release zones for cooling release zones with larger differences; first using the daytime cooling release capacity to cool the cooling release zone, and then using the daytime cooling capacity of the current cooling release zone or the adjacent cooling release zone to cool the current cooling release zone. The daytime cooling release system is based on the above-mentioned daytime cooling release method. The present invention provides cooling to a region by first releasing cooling and then cooling, and borrowing the cooling capacity of the adjacent cooling release zones. It can not only quickly absorb the nighttime cooling to improve the cooling storage utilization rate, but also reduce the cooling capacity of the refrigeration equipment.

Description

Technical Field

[0001] The present invention relates to the field of regional energy distribution, and in particular to a daytime cooling release method and system for regional terminal users. Background Art

[0002] Regional energy is a set of energy solutions that optimizes the allocation of traditional and new energy sources based on the energy structure and energy endowment of a certain region, combines advanced technologies such as waste heat utilization, heat pumps, and energy storage, and fully utilizes high- and low-grade energy to provide urban end users with cooling, heating, electricity and other products to achieve energy conservation and emission reduction goals.

[0003] Regional energy systems can improve a city’s energy supply resilience, promote energy security, ensure energy supply, and ultimately assist in the green transformation of the economy.

[0004] A key component of regional energy systems is managing the cooling load released by cold storage systems during the cooling season. Choosing the optimal cooling capacity and method for release has become a pressing challenge for those skilled in the art. Summary of the Invention

[0005] The purpose of the present invention is to provide a daytime cooling release method and system for regional terminal users, dividing each area into several cooling release zones, each cooling release zone first uses the cooling capacity of the cooling storage facility, and after the cooling capacity returns to zero, the refrigeration equipment in each cooling release zone is used to generate cooling capacity to supply cooling to the cooling release zone. By releasing cooling first and then cooling and borrowing the cooling capacity of adjacent cooling release zones to supply cooling to the region, it can quickly digest the nighttime cooling to improve the utilization rate of cooling capacity and reduce the cooling capacity of the refrigeration equipment.

[0006] The technical solutions for achieving the purpose of the present invention are as follows:

[0007] In one aspect, a method for releasing cooling air during the day for regional end users is provided, comprising:

[0008] Divide each area into several cooling zones;

[0009] Summarize the daytime cooling capacity of all cold storage facilities in each cooling zone, and compare the difference in daytime cooling capacity between adjacent cooling zones;

[0010] For cooling areas with large difference, borrow the daytime cooling capacity or cooling capacity of other cooling areas;

[0011] First, use the daytime cooling capacity to cool the cooling zone, and then use the daytime cooling capacity of the cooling zone or the adjacent cooling zone to cool the cooling zone.

[0012] Based on one aspect, in a possible implementation, dividing each area into a plurality of cooling zones includes:

[0013] Summarize the types and quantities of refrigeration equipment in each area;

[0014] Summarize the number and distribution of pipeline networks and water storage facilities in each area;

[0015] Divide each area into several cooling zones based on the types and quantity of refrigeration equipment, the number and distribution of pipe networks and water storage facilities;

[0016] The method of dividing each area into several cooling zones includes:

[0017] The types of refrigeration equipment in each area include: industrial refrigeration equipment, household refrigeration equipment, and water source heat pumps; the number of refrigeration equipment in each area includes: the number of industrial refrigeration equipment, household refrigeration equipment and / or water source heat pumps in each cold storage area;

[0018] Summarize the number and distribution of pipelines in each area, including: the number of open pipelines in each area, the layout path of each open pipeline, which open pipelines can be used for closed pipeline cold storage, and the layout path of each closed pipeline; summarize the number and distribution of water storage facilities in each area, including: the number of fire water pools in each area, the distance of each fire water pool from open pipelines and closed pipelines; the number of mobile water pools in each area, the distance of each mobile water pool from open pipelines and closed pipelines; the number of water storage tanks in each area, and the distance of each water storage tank from open pipelines and closed pipelines;

[0019] Each area is divided into several cooling zones according to the following parameter configurations: industrial refrigeration equipment, household refrigeration equipment, water source heat pumps, the respective number of industrial refrigeration equipment, household refrigeration equipment and / or water source heat pumps in a certain area, the number of open pipes in the area, the layout path of each open pipe, which open pipes can be used as closed pipe cold storage, the layout path of each closed pipe, the number of fire water pools in the area, the distance between each fire water pool and the open pipes and closed pipes; the number of mobile water pools in the area, the distance between each mobile water pool and the open pipes and closed pipes; the number of water storage tanks in the area, and the distance between each water storage tank and the open pipes and closed pipes.

[0020] Based on one aspect, in a possible implementation, the summarizing of the daytime cooling capacity of all cooling storage facilities in each cooling release zone and comparing the daytime cooling capacity differences between adjacent cooling release zones includes:

[0021] Sum up the cooling capacity of open pipes, closed pipes, fire water pools, mobile water pools and water storage tanks in each cooling zone to get the total cooling capacity.

[0022] Calculate the difference in the total cooling capacity of adjacent cooling zones. If the difference is less than the cooling capacity demanded by any cooling zone during the s period, each cooling zone will release cooling to its own cooling users. If the difference is greater than the cooling capacity demanded by any cooling zone during the s period, the adjacent cooling zone will release cooling to the cooling users in the same cooling zone.

[0023] Obtain the cooling capacity demanded during the daytime cooling period t for each cooling zone, and configure the number and distribution of refrigeration equipment in each cooling zone based on the matching relationship between the cooling capacity demand and the total cooling capacity released.

[0024] On the other hand, a daytime cooling release system for regional end users is provided, comprising: an open-pipe cooling release system, a closed-pipe cooling release system, and a water storage facility cooling release system;

[0025] The open-pipe cooling system, the closed-pipe cooling system and the water storage facility cooling system are all connected to refrigeration equipment, and the refrigeration equipment replaces the open-pipe cooling system, the closed-pipe cooling system or the water storage facility cooling system to supply cooling to users;

[0026] The open pipe cooling system takes cold water from one open pipe during the day and then flows it through the cooling user to consume the cold water. The open pipe cooling system stores the return water from the cooling user in another open pipe.

[0027] The closed-pipe cooling system cuts both ends of the two pipes into a first closed pipe section and a second closed pipe section, which are connected via a connecting pipe. During the day, the closed-pipe cooling system draws water from the first closed pipe section and flows the water through the cooling user to consume the cooling capacity. The closed-pipe cooling system stores the return water from the cooling user in the second closed pipe section. The water from the first closed pipe section flows through the connecting pipe into the second closed pipe section for mixing, and the water from the second closed pipe section flows through the connecting pipe into the first closed pipe section for mixing.

[0028] The water storage facility cooling release system draws water from the water storage facility during the day and flows the water through cooling users to consume cooling capacity. The open pipe cooling release system stores the return water from the cooling users in the water storage facility.

[0029] Based on another aspect, in a possible implementation, the open-pipe cooling system includes: a heating water supply main and a heating return water main arranged in the same cooling zone, at least one indirect cooling unit using the cooling capacity of the heating water supply main, and at least one direct cooling unit using the cooling capacity of the heating water supply main;

[0030] The indirect cooling unit is connected to the heating water supply main via a first pipeline, and the indirect cooling unit is connected to the heating return water main via a second pipeline;

[0031] The direct cooling unit is connected to the heating water supply main via a third pipeline, and the direct cooling unit is connected to the heating return water main via a fourth pipeline.

[0032] Based on another aspect, in a possible implementation, the closed pipe cooling system includes: a portion of a heating water supply pipe serving as a first cooling chamber, a connecting pipe serving as a second cooling chamber, and a portion of a heating water return pipe serving as a third cooling chamber; the portion of the heating water supply pipe, the connecting pipe, and the portion of the heating water return pipe are all located in the same cooling zone;

[0033] The connecting pipe connects part of the heating water supply pipe and part of the heating water return pipe, so that the first cold release chamber, the second cold release chamber and the third cold release chamber are connected in sequence; the first cold release chamber, the second cold release chamber and the third cold release chamber together form a cold release container; the cold release container is connected to a cold user;

[0034] A first shut-off valve is added to one end of the heating water supply pipe, and a second shut-off valve is added to the other end of the heating water supply pipe. The water supply pipe section between the first shut-off valve and the second shut-off valve is the first cold release cavity, and the water supply pipe section between the first shut-off valve and the second shut-off valve is also the heating water supply pipe;

[0035] A third shut-off valve is added to one end of the heating return pipe, and a fourth shut-off valve is added to the other end of the heating return pipe. The return pipe section between the third shut-off valve and the fourth shut-off valve is the third cold release chamber, and the return pipe section between the third shut-off valve and the fourth shut-off valve is also the part of the heating return pipe;

[0036] One end of the connecting pipe is connected to the heating water supply pipe between the first shutoff valve and the second shutoff valve, and the other end of the connecting pipe is connected to the heating return pipe between the third shutoff valve and the fourth shutoff valve.

[0037] Based on another aspect, in a possible implementation, the water storage facility cold release system includes: a first fire water tank, a second fire water tank, a first plate heat exchanger, a second plate heat exchanger, and a first heat pump; the first fire water tank exchanges heat with a cold user through the first plate heat exchanger;

[0038] The first fire water pool and the second fire water pool are located in the basement of the same building, and at least one equipment room is separated from the first fire water pool and the second fire water pool;

[0039] The first heat pump is arranged close to the first fire water pool or the second fire water pool; the first fire water pool and the second fire water pool exchange heat through the first heat pump;

[0040] When the water temperature in the first fire water pool is lower than the water temperature in the second fire water pool, the first heat pump forces heat to flow from the first fire water pool to the second fire water pool.

[0041] Compared with the prior art, the present invention has the following beneficial effects:

[0042] The present invention divides each area into several cooling release zones. Each cooling release zone first uses the cooling capacity of the cooling storage facility. After the cooling capacity returns to zero, the refrigeration equipment in each cooling release zone is used to generate cooling capacity to supply cooling to the cooling release zone. By releasing cooling first and then cooling and borrowing the cooling capacity of the adjacent cooling release zone to supply cooling to the area, it can quickly digest the nighttime cooling to improve the utilization rate of the cooling capacity and reduce the cooling capacity of the refrigeration equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A flow chart of a daytime cooling method for regional end users provided by the present invention;

[0044] Figure 2 A flow chart of a daytime cooling system for regional end users provided by the present invention;

[0045] Figure 3 This is a functional block diagram of the open-pipe cooling system provided by the present invention;

[0046] Figure 4 This is a functional block diagram of the closed-pipe cooling system provided by the present invention;

[0047] Figure 5 This is a functional block diagram of the cooling system for the water storage facility provided by the present invention. DETAILED DESCRIPTION

[0048] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present invention.

[0049] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0050] The keyword "and / or" involved in this embodiment represents two situations, and, or. In other words, A and / or B mentioned in the embodiment of the present invention represent two situations, A and B, and A or B, and describe the three states of A and B. For example, A and / or B means: only A is included but not B; only B is included but not A; and both A and B are included.

[0051] At the same time, in the embodiments of the present invention, when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected or communicated" with another component, it may be directly connected to the other component or there may be a central component at the same time. When a component is considered to be "set on or installed on" another component, it may be directly set / installed on the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in the embodiments of the present invention are for illustrative purposes only and are not intended to limit the present invention.

[0052] It should be noted that, in order to explain the present invention in more detail so that those skilled in the art can understand the present invention more clearly and understandably, and further support the technical problems to be solved by the present invention and the corresponding technical effects to be achieved, the following explanations of the terminology involved are given before introducing the present invention:

[0053] The return network refers to the section of the circulating piping system that only carries circulating flow. Specifically, there are two pipes from the water supply point to the outlet: the supply network and the return network. After a certain period of time, the water in the supply network cools down or heats up, and a pump recycles it from the return network for reheating or cooling. Energy-generating equipment refers to heat source or cooling equipment. Cooling or heat supply is generally achieved through an intermediate carrier, called a "refrigerant" or "heating medium." Common refrigerants include refrigerants (ammonia, Freon, etc.), water (cold water), and brine (sodium chloride, etc.). Common heating media include water (hot water or steam) and coal. Equipment that produces refrigerant is called a cooling source (or refrigeration equipment), while equipment that produces heat medium is called a heat source. Heat source equipment, such as local boiler rooms, regional boiler rooms, and thermal power plants, generates heat. Cooling source equipment, such as chillers, uses various refrigeration units to produce low-temperature chilled water to provide cooling to air conditioning systems.

[0054] Those skilled in the art will appreciate that the terms "return water," "supply water," and "connection" do not limit the functions of the "pipes," but rather serve to distinguish them. In other words, the return water pipe, supply water pipe, and connecting pipe may all be the same type of pipe, or different types of pipes, or partially identical and partially different. The present invention does not impose any such limitations; any pipe capable of transporting liquids is suitable for use in the present invention and falls within its scope of protection.

[0055] See also Figure 1An embodiment of the present invention provides a daytime cooling release method for regional terminal users, comprising: dividing each region into a number of cooling release zones; summarizing the daytime cooling release capacity of all cold storage facilities in each cooling release zone, and comparing the difference in daytime cooling release capacity in adjacent cooling release zones; borrowing the daytime cooling release capacity or the daytime cooling capacity of other cooling release zones for the cooling release zone with a larger difference; first using the daytime cooling release capacity to cool the cooling release zone, and then using the daytime cooling capacity of the current cooling release zone or the adjacent cooling release zone to cool the current cooling release zone.

[0056] In an embodiment of the present invention, each area is divided into several cooling release zones, including: summarizing the types and quantities of refrigeration equipment in each area; summarizing the number and distribution of pipelines and water storage facilities in each area; and dividing each area into several cooling release zones according to the types and quantities of refrigeration equipment, the number and distribution of pipelines and water storage facilities.

[0057] In an embodiment of the present invention, the method of dividing each area into a plurality of cooling zones includes:

[0058] The types of refrigeration equipment in each area include: industrial refrigeration equipment, household refrigeration equipment, and water source heat pumps;

[0059] Summarize the number of refrigeration equipment in each area, including: the number of industrial refrigeration equipment, household refrigeration equipment and / or water source heat pumps in each cold storage area; summarize the number and distribution of pipelines in each area, including: the number of open pipelines in each area, the layout path of each open pipeline, which open pipelines can be used for closed pipeline cold storage, and the layout path of each closed pipeline; summarize the number and distribution of water storage facilities in each area, including: the number of fire water tanks in each area, the distance of each fire water tank from the open and closed pipelines; the number of mobile water tanks in each area, the distance of each mobile water tank from the open and closed pipelines; the number of water storage tanks in each area, and the distance of each water storage tank from the open and closed pipelines;

[0060] Each area is divided into several cooling zones according to the following parameter configurations: industrial refrigeration equipment, household refrigeration equipment, water source heat pumps, the respective number of industrial refrigeration equipment, household refrigeration equipment and / or water source heat pumps in a certain area, the number of open pipes in the area, the layout path of each open pipe, which open pipes can be used as closed pipe cold storage, the layout path of each closed pipe, the number of fire water pools in the area, the distance between each fire water pool and the open pipes and closed pipes; the number of mobile water pools in the area, the distance between each mobile water pool and the open pipes and closed pipes; the number of water storage tanks in the area, and the distance between each water storage tank and the open pipes and closed pipes.

[0061] In an embodiment of the present invention, the daytime cooling capacity of all cold storage facilities in each cooling release zone is summarized, and the difference in daytime cooling capacity in adjacent cooling release zones is compared, including: summing up the cooling capacity of open pipes, closed pipes, fire water tanks, mobile water tanks and water storage tanks in each cooling release zone to obtain the total cooling capacity; calculating the difference in the total cooling capacity of adjacent cooling release zones, if the difference is less than the cooling capacity demand of any cooling release zone within the time period s, each cooling release zone releases cooling to its own cooling users; if the difference is greater than the cooling capacity demand of any cooling release zone within the time period s, the adjacent cooling release zone releases cooling to the cooling users in the cooling release zone; obtaining the cooling capacity demand of each cooling release zone within the daytime cooling supply time period t, and configuring the number and distribution of refrigeration equipment in each cooling release zone according to the matching relationship between the cooling capacity demand and the total cooling capacity released.

[0062] See also Figure 2 , an embodiment of the present invention further provides a daytime cooling release system for regional terminal users, comprising: an open-pipe cooling release system, a closed-pipe cooling release system and a water storage facility cooling release system; the open-pipe cooling release system, the closed-pipe cooling release system and the water storage facility cooling release system are all connected to refrigeration equipment, and the refrigeration equipment replaces the open-pipe cooling release system, the closed-pipe cooling release system or the water storage facility cooling release system to supply cooling to cooling users; the open-pipe cooling release system takes cooling from an open pipe during the day and then flows through the cooling user to consume the cooling capacity, and the open-pipe cooling release system stores the return water of the cooling user in another open pipe; the closed-pipe cooling release system connects the two pipes The two ends of the pipeline are cut into a first closed pipe section and a second closed pipe section, and the first closed pipe section and the second closed pipe section are connected by a connecting pipe. The closed pipe cooling release system takes water from the first closed pipe section during the day and flows through the cooling users to consume cooling energy. The closed pipe cooling release system stores the return water of the cooling users in the second closed pipe section. The water flow of the first closed pipe section flows through the connecting pipe into the second closed pipe section for mixing, and the water flow of the second closed pipe section flows through the connecting pipe into the first closed pipe section for mixing; the water storage facility cooling release system takes water from the water storage facility during the day and flows through the cooling users to consume cooling energy. The open pipe cooling release system stores the return water of the cooling users in the water storage facility.

[0063] See also Figure 3 The above-mentioned open pipe cooling system includes: a heating water supply main and a heating return water main arranged in the same cooling release area, at least one indirect cooling unit using the cooling capacity of the heating water supply main, and at least one direct cooling unit using the cooling capacity of the heating water supply main; the indirect cooling unit is connected to the heating water supply main through a first pipe, and the indirect cooling unit is connected to the heating return water main through a second pipe; the direct cooling unit is connected to the heating water supply main through a third pipe, and the direct cooling unit is connected to the heating return water main through a fourth pipe.

[0064] Preferably, each indirect cooling unit includes at least one cooling user, and all cooling users are connected in parallel. The indirect cooling units in the disclosed embodiments can be ground-floor, mid-floor, or high-floor users in a building, or they can be individual cooling units within a building. The disclosed embodiments do not impose any limitations on indirect cooling units.

[0065] It is preferred that the cooling unit is directly connected to the heating water supply main through the fifth pipe, and the cooling unit is directly connected to the heating return water main through the sixth pipe; a sixth circulation loop is formed between the cooling unit, the fifth pipe, the heating water supply main, the sixth pipe, and the heating return water main.

[0066] See also Figure 4 The above-mentioned closed pipe cold release system includes: a part of the heating water supply pipe as the first cold release chamber, a connecting pipe as the second cold release chamber, and a part of the heating return pipe as the third cold release chamber; the part of the heating water supply pipe, the connecting pipe and the part of the heating return pipe are all located in the same cold release area; the connecting pipe connects the part of the heating water supply pipe and the part of the heating return pipe, so that the first cold release chamber, the second cold release chamber and the third cold release chamber are connected in sequence; the first cold release chamber, the second cold release chamber and the third cold release chamber together form a cold release container; the cold release container is connected to a cold user; a first shut-off valve is added to one end of the heating water supply pipe, and a second shut-off valve is added to the other end of the heating water supply pipe The water supply pipe section between the first shut-off valve and the second shut-off valve is the first cold release chamber, and the water supply pipe section between the first shut-off valve and the second shut-off valve is also part of the heating water supply pipe; a third shut-off valve is added to one end of the heating return pipe, and a fourth shut-off valve is added to the other end of the heating return pipe. The return pipe section between the third shut-off valve and the fourth shut-off valve is the third cold release chamber, and the return pipe section between the third shut-off valve and the fourth shut-off valve is also part of the heating return pipe; one end of the connecting pipe is connected to the heating water supply pipe between the first shut-off valve and the second shut-off valve, and the other end of the connecting pipe is connected to the heating return pipe between the third shut-off valve and the fourth shut-off valve.

[0067] The cold storage container of the disclosed embodiment is connected to a cold storage system and a cold release system, wherein: the cold release system includes: a cold release water supply pipe, a cold release return pipe and cold users; the cold release water supply pipe is connected to part of the heating water supply pipe or part of the heating return pipe, and the cold release return pipe is connected to part of the heating return pipe or part of the heating water supply pipe; a first cold release circuit is formed between the cold users, part of the heating water supply pipe and part of the heating return pipe.

[0068] See also Figure 5The above-mentioned water storage facility cold release system includes: a first fire water tank, a second fire water tank, a first plate heat exchanger, a second plate heat exchanger and a first heat pump; the first fire water tank exchanges heat with the cold user through the first plate heat exchanger; the first fire water tank and the second fire water tank are located in the basement of the same building, and there is at least one equipment room between the first fire water tank and the second fire water tank; the first heat pump is arranged close to the first fire water tank or the second fire water tank; the first fire water tank and the second fire water tank exchange heat through the first heat pump; when the water temperature in the first fire water tank is lower than the water temperature in the second fire water tank, the first heat pump forces heat to flow from the first fire water tank to the second fire water tank.

[0069] The present invention divides each area into several cooling release zones. Each cooling release zone first uses the cooling capacity of the cooling storage facility. After the cooling capacity returns to zero, the refrigeration equipment in each cooling release zone is used to generate cooling capacity to supply cooling to the cooling release zone. By releasing cooling first and then cooling and borrowing the cooling capacity of the adjacent cooling release zone to supply cooling to the area, it can quickly digest the nighttime cooling to improve the utilization rate of the cooling capacity and reduce the cooling capacity of the refrigeration equipment.

[0070] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

[0071] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0072] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A daytime cooling method for regional end users, characterized in that: include: Divide each area into several cooling zones; Summarize the daytime cooling capacity of all cold storage facilities in each cooling zone, and compare the difference in daytime cooling capacity between adjacent cooling zones; For cooling areas with large difference, borrow the daytime cooling capacity or cooling capacity of other cooling areas; First, use the daytime cooling capacity to cool the cooling zone, and then use the daytime cooling capacity of the cooling zone or the adjacent cooling zone to cool the cooling zone; Each area is divided into several cooling zones, including: Summarize the types and quantities of refrigeration equipment in each area; Summarize the number and distribution of pipeline networks and water storage facilities in each area; Divide each area into several cooling zones based on the types and quantity of refrigeration equipment, the number and distribution of pipe networks and water storage facilities; The method of dividing each area into several cooling zones includes: The types of refrigeration equipment in each area include: industrial refrigeration equipment, household refrigeration equipment, and water source heat pumps; the number of refrigeration equipment in each area includes: the number of industrial refrigeration equipment, household refrigeration equipment and / or water source heat pumps in each cold storage area; Summarize the number and distribution of pipelines in each area, including: the number of open pipelines in each area, the layout path of each open pipeline, which open pipelines can be used for closed pipeline cold storage, and the layout path of each closed pipeline; summarize the number and distribution of water storage facilities in each area, including: the number of fire water pools in each area, the distance of each fire water pool from open pipelines and closed pipelines; the number of mobile water pools in each area, the distance of each mobile water pool from open pipelines and closed pipelines; the number of water storage tanks in each area, and the distance of each water storage tank from open pipelines and closed pipelines; Each area is divided into several cooling zones based on the following parameter configurations: industrial refrigeration equipment, household refrigeration equipment, water source heat pumps, the number of industrial refrigeration equipment, household refrigeration equipment and / or water source heat pumps in a certain area, the number of open pipes in the area, the layout path of each open pipe, which open pipes can be used for closed pipe cold storage, the layout path of each closed pipe, the number of fire water pools in the area, the distance between each fire water pool and the open pipes and closed pipes; the number of mobile water pools in the area, the distance between each mobile water pool and the open pipes and closed pipes; the number of water storage tanks in the area, and the distance between each water storage tank and the open pipes and closed pipes; The summary of the daytime cooling capacity of all cooling storage facilities in each cooling zone and the comparison of the daytime cooling capacity differences between adjacent cooling zones include: Sum up the cooling capacity of open pipes, closed pipes, fire water pools, mobile water pools and water storage tanks in each cooling zone to get the total cooling capacity. Calculate the difference in the total cooling capacity of adjacent cooling zones. If the difference is less than the cooling capacity demanded by any cooling zone during the s period, each cooling zone will release cooling to its own cooling users. If the difference is greater than the cooling capacity demanded by any cooling zone during the s period, the adjacent cooling zone will release cooling to the cooling users in the same cooling zone. Obtain the cooling capacity demanded during the daytime cooling period t for each cooling zone, and configure the number and distribution of refrigeration equipment in each cooling zone based on the matching relationship between the cooling capacity demand and the total cooling capacity released.

2. A daytime cooling system for regional end users, characterized in that: include: Open pipe cooling system, closed pipe cooling system and water storage facility cooling system; The open-pipe cooling system, the closed-pipe cooling system and the water storage facility cooling system are all connected to refrigeration equipment, and the refrigeration equipment replaces the open-pipe cooling system, the closed-pipe cooling system or the water storage facility cooling system to supply cooling to users; The open pipe cooling system takes cold water from one open pipe during the day and then flows it through the cooling user to consume the cold water. The open pipe cooling system stores the return water from the cooling user in another open pipe. The closed-pipe cooling system cuts both ends of the two pipes into a first closed pipe section and a second closed pipe section, which are connected via a connecting pipe. During the day, the closed-pipe cooling system draws water from the first closed pipe section and flows the water through the cooling user to consume the cooling capacity. The closed-pipe cooling system stores the return water from the cooling user in the second closed pipe section. The water from the first closed pipe section flows through the connecting pipe into the second closed pipe section for mixing, and the water from the second closed pipe section flows through the connecting pipe into the first closed pipe section for mixing. The water storage facility cooling release system draws water from the water storage facility during the day and flows the water through cooling users to consume cooling capacity. The open pipe cooling release system stores the return water from the cooling users in the water storage facility.

3. The daytime cooling system according to claim 2, characterized in that: The open pipe cooling system includes: a heating water supply pipe and a heating return water pipe arranged in the same cooling zone, at least one indirect cooling unit using the cooling capacity of the heating water supply pipe, and at least one direct cooling unit using the cooling capacity of the heating water supply pipe; The indirect cooling unit is connected to the heating water supply main via a first pipeline, and the indirect cooling unit is connected to the heating return water main via a second pipeline; The direct cooling unit is connected to the heating water supply main via a third pipeline, and the direct cooling unit is connected to the heating return water main via a fourth pipeline.

4. The daytime cooling system according to claim 2, characterized in that: The closed pipe cooling system includes: a portion of the heating water supply pipe as the first cooling chamber, a connecting pipe as the second cooling chamber, and a portion of the heating return pipe as the third cooling chamber; the portion of the heating water supply pipe, the connecting pipe, and the portion of the heating return pipe are all located in the same cooling zone; The connecting pipe connects part of the heating water supply pipe and part of the heating water return pipe, so that the first cold release chamber, the second cold release chamber and the third cold release chamber are connected in sequence; the first cold release chamber, the second cold release chamber and the third cold release chamber together form a cold release container; the cold release container is connected to a cold user; A first shut-off valve is added to one end of the heating water supply pipe, and a second shut-off valve is added to the other end of the heating water supply pipe. The water supply pipe section between the first shut-off valve and the second shut-off valve is the first cold release cavity, and the water supply pipe section between the first shut-off valve and the second shut-off valve is also the heating water supply pipe; A third shut-off valve is added to one end of the heating return pipe, and a fourth shut-off valve is added to the other end of the heating return pipe. The return pipe section between the third shut-off valve and the fourth shut-off valve is the third cold release chamber, and the return pipe section between the third shut-off valve and the fourth shut-off valve is also the part of the heating return pipe; One end of the connecting pipe is connected to the heating water supply pipe between the first shutoff valve and the second shutoff valve, and the other end of the connecting pipe is connected to the heating return pipe between the third shutoff valve and the fourth shutoff valve.

5. The daytime cooling system according to claim 2, characterized in that: The water storage facility cold release system includes: a first fire water tank, a second fire water tank, a first plate heat exchanger, a second plate heat exchanger and a first heat pump; the first fire water tank exchanges heat with the cold user through the first plate heat exchanger; The first fire water pool and the second fire water pool are located in the basement of the same building, and at least one equipment room is separated from the first fire water pool and the second fire water pool; The first heat pump is arranged close to the first fire water pool or the second fire water pool; the first fire water pool and the second fire water pool exchange heat through the first heat pump; When the water temperature in the first fire water pool is lower than the water temperature in the second fire water pool, the first heat pump forces heat to flow from the first fire water pool to the second fire water pool.

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