Source, network, load, storage and control integrated water loop heat pump air-conditioning system

Abstract

The invention relates to the technical field of energy, and discloses a source network load storage control integrated water loop heat pump air conditioning system. Comprising a closed cooling tower, a first office tower distributed water source heat pump system, a buried pipe heat exchange system, a data machine room waste heat recycling system, a gas-fired boiler, a skirt room part water source heat pump system and a second office tower distributed water source heat pump system, wherein the closed cooling tower is connected with an energy management system, a water ring pipe network circulating water pump and a multi-effect whole-course water treatment device. The water ring pipe network circulating water pump, the multi-effect whole-course water treatment device and the pipeline connected with the water ring pipe network circulating water pump serve as a first pipeline, the pipeline connected with the multi-effect whole-course water treatment device serves as a second pipeline, and the first pipeline and the second pipeline jointly form a water ring water supply pipeline. Waste heat in the building is fully utilized through the water ring system, energy transfer is achieved, the proportion of renewable energy sources under the heat supply working condition is increased, gas consumption is reduced, and cost reduction and efficiency improvement in operation are achieved.

Description

Technical Field

[0001] The present invention relates to the field of energy technologies, and particularly relates to an integrated source-network-load-storage-control water-loop heat pump air-conditioning system. Background Art

[0002] When there is a large amount of waste heat inside a building and there are significant differences in the air-conditioning usage times in each area, the traditional centralized air-conditioning system has problems of supply-demand mismatch and high operating costs under various working conditions. In addition, when there are simultaneous heating and cooling load demands inside a building, for example, dividing the air-conditioning system into an inner zone and an outer zone according to the building depth, with the inner zone for cooling and the outer zone for heating; generally, a four-pipe air-conditioning system, a water-loop system, etc. can be used to solve the simultaneous heating and cooling load demands. However, there are problems such as high initial investment, insufficient utilization of waste heat in the building, and low overall energy efficiency of the system. Summary of the Invention

[0003] The present invention provides an integrated source-network-load-storage-control water-loop heat pump air-conditioning system, which makes full use of the waste heat inside the building through the water-loop system, realizes energy transfer, increases the proportion of renewable energy under the heating condition, reduces the gas consumption, and achieves cost reduction and efficiency improvement in operation.

[0004] The present invention provides an integrated source-network-load-storage-control water-loop heat pump air-conditioning system, including a closed cooling tower, a distributed water-source heat pump system for Office Tower 1, a ground-coupled heat exchanger system, a waste heat recovery and utilization system for the data center, a gas boiler, a water-source heat pump system for the podium part, a distributed water-source heat pump system for Office Tower 2, a water-loop pipe network circulating pump, and a multi-effect full-process water treatment device;

[0005] The closed cooling tower, the distributed water-source heat pump system for Office Tower 1, the ground-coupled heat exchanger system, the waste heat recovery and utilization system for the data center, the gas boiler, the water-source heat pump system for the podium part, and the distributed water-source heat pump system for Office Tower 2 are all connected to the energy management system, and are connected to the water-loop pipe network circulating pump through a first pipeline and to the multi-effect full-process water treatment device through a second pipeline. The first pipeline and the second pipeline together form a water-loop water supply pipeline. The multi-effect full-process water treatment device is connected to the water-loop pipe network circulating pump, and the water-loop pipe network circulating pump is connected to the energy management system.

[0006] Furthermore, a closed-circuit cooling tower circulation pump is provided between the closed-circuit cooling tower and the first pipeline; an office tower one water loop system circulation pump is provided between the office tower one distributed water source heat pump system and the first pipeline; a ground heat exchanger system circulation pump is provided between the ground heat exchanger system and the first pipeline; a data center waste heat recovery and utilization system circulation pump is provided between the data center waste heat recovery and utilization system and the first pipeline; a boiler system circulation pump is provided between the gas boiler and the first pipeline; a podium part water source heat pump system circulation pump is provided between the podium part water source heat pump system and the first pipeline; an office tower two water loop system circulation pump is provided between the office tower two distributed water source heat pump system and the first pipeline;

[0007] The closed-circuit cooling tower circulation pump, the office tower one water loop system circulation pump, the ground heat exchanger system circulation pump, the data center waste heat recovery and utilization system circulation pump, the boiler system circulation pump, the podium part water source heat pump system circulation pump, and the office tower two water loop system circulation pump are all connected to the energy management system.

[0008] Furthermore, energy meters are provided between the closed-circuit cooling tower, the office tower one distributed water source heat pump system, the ground heat exchanger system, the data center waste heat recovery and utilization system, the gas boiler, the podium part water source heat pump system, the office tower two distributed water source heat pump system and the second pipeline; all energy meters are connected to the energy management system.

[0009] Furthermore, the number of gas boilers is two. The two gas boilers are both connected to the energy management system, and each of the two gas boilers is equipped with its own boiler system circulation pump and energy meter.

[0010] Furthermore, the energy management system is also connected to an outdoor temperature sensor.

[0011] Furthermore, under winter operating conditions, the temperature of the water loop supply pipeline is controlled at 8 - 20°C, and the data center waste heat recovery and utilization system is used to supplement heat to the water loop supply pipeline. The water loop network circulation pump and the data center waste heat recovery and utilization system circulation pump always operate in variable frequency;

[0012] When the temperature of the water loop supply pipeline < 10°C, the ground heat exchanger system circulation pump is started;

[0013] When the temperature of the water loop supply pipeline ≤ 6°C, the ground heat exchanger system circulation pump is shut down, the gas boiler is put into use, and the boiler system circulation pump of 1 gas boiler is started; when the temperature of the water loop supply pipeline still cannot ≥ 5°C, the boiler system circulation pump of the other gas boiler is started; when the temperature of the water loop supply pipeline ≥ 10°C, the gas boiler and the corresponding boiler system circulation pump are shut down, and the ground heat exchanger system circulation pump is started;

[0014] When the temperature of the water ring water supply pipeline ≥ 25°C, start the ground heat exchanger system circulation pump; when the temperature of the water ring water supply pipeline ≤ 20°C, stop the ground heat exchanger system circulation pump.

[0015] When any small water source heat pump at the end of Office Tower 1 is started, the water ring system circulation pump of Office Tower 1 is started; when any small water source heat pump at the end of Office Tower 2 is started, the water ring system circulation pump of Office Tower 2 is started.

[0016] When the heat source in the water ring water supply pipeline extracted by the podium system cannot meet the heat load demand of the podium part, start the gas boiler and the boiler system circulation pump for supplementary heating.

[0017] Further, in the summer working condition, the temperature of the water ring water supply pipeline is controlled at 25 - 37°C, and the water ring pipe network circulation pump always operates with variable frequency.

[0018] The waste heat recovery and utilization system of the data room uses the corresponding open cooling tower for heat dissipation and starts the corresponding cooling water circulation pump; the water source heat pump system of the podium part uses the corresponding open cooling tower for cooling, and neither is connected to the water ring water supply pipeline.

[0019] In the summer working condition, the ground heat exchanger system is preferentially put into use, and the ground heat exchanger system circulation pump is started.

[0020] When the temperature of the water ring water supply pipeline ≥ 32°C, the closed cooling tower is put into use, and the closed cooling tower circulation pump is started; when the temperature of the water ring water supply pipeline ≤ 27°C, the heat dissipation system of the closed cooling tower stops using, and only relies on the ground heat exchanger system for heat dissipation.

[0021] Further, in the transitional season working condition, the temperature of the water ring water supply pipeline is controlled at 8 - 37°C, the water ring pipe network circulation pump always operates with variable frequency, the ground heat exchanger system is put into use, and the ground heat exchanger system circulation pump is started.

[0022] When the temperature of the water ring water supply pipeline ≥ 32°C, the closed cooling tower is put into use, and the closed cooling tower circulation pump is started; when the temperature of the water ring water supply pipeline ≤ 27°C, the heat dissipation system of the closed cooling tower stops using, and only relies on the ground heat exchanger system for heat dissipation.

[0023] The beneficial effects of the present invention are as follows:

[0024] 1. In a building with a large heating demand, the system of the present invention can make full use of the waste heat inside the building through the water ring system in the transitional season and the winter heating season, realize energy transfer, increase the proportion of renewable energy in the heating working condition, reduce the gas consumption, and achieve cost reduction and efficiency improvement in operation.

[0025] 2. The present invention can solve the problem of low overall energy efficiency of the central air-conditioning system under low load rate conditions. Under the overtime air-conditioning conditions, the distributed water source heat pumps at the end of this system can be flexibly turned on, and the energy consumption is significantly reduced compared with the centralized system.

[0026] 3. Based on multi-energy complementarity, source-load interaction, and network-energy storage interaction, the present invention proposes a form of integrated water-loop heat pump air-conditioning system for source-network-load-storage control. In addition to solving the simultaneous heating and cooling load demands in buildings, it can also make full use of the waste heat inside the building (such as the waste heat from the data room), without causing energy waste, and the overall energy efficiency of the air-conditioning system is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic structural diagram of the integrated water-loop heat pump air-conditioning system for source-network-load-storage control of the present invention.

[0028] The realization of the object of the present invention, functional characteristics and advantages will be further described in conjunction with the embodiments with reference to the drawings. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] When there are simultaneous heating and cooling load demands inside the building, for example, the air-conditioning system is divided into an inner zone and an outer zone according to the building depth, with the inner zone for cooling and the outer zone for heating. Generally, a four-pipe air-conditioning system or a water-loop heat pump air-conditioning system can be applied to solve the simultaneous heating and cooling load demands. The water-loop heat pump air-conditioning system has been applied in a certain range in various public buildings at home and abroad, but there is no relevant application combined with energy storage and control systems at present.

[0031] As Figure 1 shown, the present invention provides an integrated water-loop heat pump air-conditioning system for source-network-load-storage control, including a closed cooling tower, a distributed water source heat pump system for Office Tower 1, a ground-coupled heat exchanger system, a waste heat recovery and utilization system for the data room, a gas boiler, a water source heat pump system for the podium part, a distributed water source heat pump system for Office Tower 2, a water-loop pipe network circulating pump, and a multi-effect full-process water treatment device;

[0032] The closed cooling tower, the distributed water source heat pump system for Office Tower 1, the ground-coupled heat exchanger system, the waste heat recovery and utilization system for the data room, the gas boiler, the water source heat pump system for the podium part, and the distributed water source heat pump system for Office Tower 2 are all connected to the energy management system, and are connected to the water-loop pipe network circulating pump through the first pipeline and to the multi-effect full-process water treatment device through the second pipeline. The first pipeline and the second pipeline together form a water-loop supply pipeline. The multi-effect full-process water treatment device is connected to the water-loop pipe network circulating pump, the water-loop pipe network circulating pump is connected to the energy management system, and the energy management system is also connected to an outdoor temperature sensor.

[0033] In one embodiment, a closed-circuit cooling tower circulation pump is provided between the closed-circuit cooling tower and the first pipeline, an office tower one water loop system circulation pump is provided between the office tower one distributed water source heat pump system and the first pipeline, a ground heat exchanger system circulation pump is provided between the ground heat exchanger system and the first pipeline, a data center waste heat recovery and utilization system circulation pump is provided between the data center waste heat recovery and utilization system and the first pipeline, a boiler system circulation pump is provided between the gas boiler and the first pipeline, a podium part water source heat pump system circulation pump is provided between the podium part water source heat pump system and the first pipeline, and an office tower two water loop system circulation pump is provided between the office tower two distributed water source heat pump system and the first pipeline;

[0034] The closed-circuit cooling tower circulation pump, the office tower one water loop system circulation pump, the ground heat exchanger system circulation pump, the data center cooling system circulation pump, the boiler system circulation pump, the podium part water loop system circulation pump, and the office tower two water loop system circulation pump are all connected to the energy management system.

[0035] In one embodiment, energy meters are provided between the closed-circuit cooling tower, the office tower one distributed water source heat pump system, the ground heat exchanger system, the data center waste heat recovery and utilization system, the gas boiler, the podium part water source heat pump system, the office tower two distributed water source heat pump system and the second pipeline; all the energy meters are connected to the energy management system.

[0036] In one embodiment, the number of the gas boilers is two, both of the two gas boilers are connected to the energy management system, and each of the two gas boilers is equipped with its own boiler system circulation pump and energy meter.

[0037] The entire water loop system of the present invention is connected to a water source multi-connected unit, a ground heat exchanger system, a data center waste heat recovery and utilization system (condenser side of magnetic levitation chiller), a gas boiler, and a closed-circuit cooling tower. The water temperature of the circulating water loop fluctuates within the range of 5 to 37 °C. When the temperature exceeds 37 °C, the cooling tower is turned on. When the temperature is lower than 5 °C, the gas boiler is put into use. The ground heat exchanger system can extract cold in summer and not only extract heat but also store heat in winter.

[0038] Winter working condition:

[0039] 1. The temperature of the entire water loop supply pipeline is controlled within the range of 8 to 20 °C; preferably, the condenser side of the magnetic levitation chiller in the data center is used to supplement heat to the water loop system. The water loop network circulation water pump and the data center cooling system circulation pump operate at variable frequency finally.

[0040] 2. When the temperature of the water loop supply pipeline < 10 °C, the ground heat exchanger system is put into use, and the corresponding electric valves and circulation water pumps of the ground heat exchanger system are turned on.

[0041] 3. When the temperature of the water ring water supply pipeline ≤ 6°C, turn off the circulating pump of the buried pipe system, put the gas boiler into use, open the electric valve of one gas boiler and the circulating water pump (finally start the boiler); when the supply water temperature still cannot be guaranteed to be ≥ 5°C, open the electric valve of the other gas boiler and the circulating water pump (finally start the boiler). When the temperature of the water ring water supply pipeline ≥ 10°C, turn off the gas boiler and the corresponding water pump. Open the electric valve and the circulating water pump of the buried pipe heat exchange system.

[0042] 4. During the night condition, when the building heat load demand is low, when the temperature of the water ring water supply pipeline ≥ 25°C, turn on the circulating pump of the buried pipe system; when the water temperature ≤ 20°C, stop the circulating water pump of the buried pipe heat exchange system.

[0043] 5. When any small host of the water source heat pump at the end of Office Tower 1 is turned on, turn on the circulating pump of the water ring system in Office Tower 1; when any small host of the water source heat pump at the end of Office Tower 2 is turned on, turn on the circulating pump of the water ring system in Office Tower 2.

[0044] 6. The podium system preferentially uses the heat pump unit to extract the low-grade heat source in the water ring pipe network; when the heat load demand of the podium part cannot be guaranteed, turn on the gas boiler and its circulating water pump for supplementary heating.

[0045] 7. In winter condition, for the closed cooling tower of the water ring system and the open cooling tower of the podium air conditioning system, just drain them, and stop the operation of the corresponding electric valve, circulating water pump and spray pump. Electric tracing heat preservation is carried out for the tap water pipe.

[0046] Summer condition:

[0047] 1. The temperature of the entire water ring water supply pipeline is controlled within the range of 25 - 37°C; the circulating water pump of the water ring pipe network always runs with frequency conversion.

[0048] 2. The magnetic levitation chiller in the data room uses the corresponding open cooling tower for heat dissipation, and turn on the corresponding cooling water circulating pump; the magnetic levitation chillers and heat pump units in the podium part use the corresponding open cooling tower for cooling; neither of them is connected to the water ring water supply pipeline.

[0049] 3. In summer condition, the buried pipe heat exchange system is preferentially put into use, and turn on the corresponding electric valve and circulating water pump of the buried pipe heat exchange system.

[0050] 4. When the temperature of the water ring water supply pipeline ≥ 32°C, put the closed cooling tower into use, and turn on the corresponding electric valve, closed cooling tower fan and spray pump; when the temperature of the water ring water supply pipeline ≤ 27°C, stop using the heat dissipation system of the closed cooling tower, and only rely on the buried pipe heat exchange system for heat dissipation.

[0051] 5. When any small water source heat pump at the end of Office Tower 1 is turned on, the water ring system circulation pump of Office Tower 1 is turned on; when any small water source heat pump at the end of Office Tower 2 is turned on, the water ring system circulation pump of Office Tower 2 is turned on.

[0052] Transition season operation mode:

[0053] 1. The temperature of the entire water ring supply pipeline is controlled within the range of 8 - 37°C; the water ring pipe network circulation pump always operates with variable frequency. During the transition seasons before and after the centralized cooling season, the condensation heat of the chilled water units in the data center and the condensation heat of the heat pump units in the air conditioning system of the podium are directly dissipated by using an open cooling tower.

[0054] 2. During the transition season operation mode, the ground heat exchanger system should be put into use, and the corresponding electric valves and circulation pumps of the ground heat exchanger system should be turned on.

[0055] 3. When the temperature of the water ring supply pipeline ≥ 32°C, the closed cooling tower is put into use, and the corresponding electric valves, closed cooling tower fans, and spray pumps are turned on; when the temperature of the water ring supply pipeline ≤ 27°C, the heat dissipation system of the closed cooling tower stops using, and only the ground heat exchanger system is relied on for heat dissipation.

[0056] 5. When any small water source heat pump at the end of Office Tower 1 is turned on, the water ring system circulation pump of Office Tower 1 is turned on; when any small water source heat pump at the end of Office Tower 2 is turned on, the water ring system circulation pump of Office Tower 2 is turned on.

[0057] In buildings with a large heating demand in the north, during the transition season of the air conditioning system and the winter heating season, the waste heat inside the building can be fully utilized through the water ring system to achieve energy transfer, increase the proportion of renewable energy under the heating condition, reduce the gas consumption, and achieve cost reduction and efficiency improvement in operation. In addition, the present invention can solve the problem of low overall energy efficiency of the centralized air conditioning system under the low load rate condition. Under the overtime air conditioning condition, the distributed water source heat pumps at the end of this system can be flexibly turned on, and the energy consumption is significantly reduced compared with the centralized system.

[0058] The present invention proposes to use a source-network-load-storage integrated water ring heat pump air conditioning system in the control center of the rail transit field. Based on multi-energy complementarity, source-load interaction, and network-storage interaction, it can not only solve the simultaneous heating and cooling load demands in the building, but also make full use of the waste heat inside the building (such as the waste heat in the data center), without causing energy waste, and the overall energy efficiency of the air conditioning system is high, which can save a large amount of the later operation cost of this type of building.

[0059] It should be noted that, in this text, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, such that a process, apparatus, article or method comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, apparatus, article or method. Without further limitation, an element defined by the phrase "comprising an..." does not exclude the presence of additional identical elements in the process, apparatus, article or method comprising such element.

[0060] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A source-network-load-storage integrated water-loop heat pump air-conditioning system, characterized in that It includes a closed cooling tower, a distributed water source heat pump system for Office Tower 1, a buried pipe heat exchange system, a waste heat recovery and utilization system for the data room, a gas boiler, a water source heat pump system for the podium part, a distributed water source heat pump system for Office Tower 2, a water loop network circulation pump, and a multi-effect full-process water treatment device; The closed cooling tower, the distributed water source heat pump system for Office Tower 1, the buried pipe heat exchange system, the waste heat recovery and utilization system for the data room, the gas boiler, the water source heat pump system for the podium part, and the distributed water source heat pump system for Office Tower 2 are all connected to the energy management system, and are connected to the water loop network circulation pump through the first pipeline and to the multi-effect full-process water treatment device through the second pipeline. The first pipeline and the second pipeline together form a water loop supply pipeline. The multi-effect full-process water treatment device is connected to the water loop network circulation pump, and the water loop network circulation pump is connected to the energy management system.

2. The integrated source-network-load-storage control water-loop heat pump air conditioning system according to claim 1, wherein, A closed cooling tower circulation pump is arranged between the closed cooling tower and the first pipeline; an Office Tower 1 water loop system circulation pump is arranged between the distributed water source heat pump system for Office Tower 1 and the first pipeline; a buried pipe system circulation pump is arranged between the buried pipe heat exchange system and the first pipeline; a data room cooling system circulation pump is arranged between the waste heat recovery and utilization system for the data room and the first pipeline; a boiler system circulation pump is arranged between the gas boiler and the first pipeline; a podium water loop system circulation pump is arranged between the water source heat pump system for the podium part and the first pipeline; an Office Tower 2 water loop system circulation pump is arranged between the distributed water source heat pump system for Office Tower 2 and the first pipeline; The closed cooling tower circulation pump, the Office Tower 1 water loop system circulation pump, the buried pipe system circulation pump, the data room cooling system circulation pump, the boiler system circulation pump, the podium water loop system circulation pump, and the Office Tower 2 water loop system circulation pump are all connected to the energy management system.

3. The integrated source-network-load-storage controlled water-loop heat pump air conditioning system according to claim 2, wherein Energy meters are arranged between the closed cooling tower, the distributed water source heat pump system for Office Tower 1, the buried pipe heat exchange system, the waste heat recovery and utilization system for the data room, the gas boiler, the water source heat pump system for the podium part, the distributed water source heat pump system for Office Tower 2 and the second pipeline; all the energy meters are connected to the energy management system.

4. The integrated source-network-load-storage controlled water-loop heat pump air conditioning system according to claim 3, characterized in that, The number of the gas boilers is two. Both gas boilers are connected to the energy management system, and each of the two gas boilers is equipped with its own boiler system circulation pump and energy meter.

5. The source-network-load-storage integrated water-loop heat pump air conditioning system according to claim 4, wherein, The energy management system is also connected to an outdoor temperature sensor.

6. The source-network-load-storage integrated water-loop heat pump air conditioning system according to claim 5, wherein Under the winter working condition, the temperature of the water loop supply pipeline is controlled at 8 - 20°C, and the waste heat recovery and utilization system for the data room is used to supplement heat to the water loop supply pipeline. The water loop network circulation pump and the data room cooling system circulation pump always operate in variable frequency; When the temperature of the water loop supply pipeline < 10°C, the buried pipe system circulation pump is started; When the temperature of the water ring water supply pipeline ≤ 6°C, turn off the circulating pump of the buried pipe system, put the gas boiler into use, and turn on the circulating pump of the boiler system of 1 gas boiler; when the temperature of the water ring water supply pipeline still cannot ≥ 5°C, turn on the circulating pump of the boiler system of the other 1 gas boiler; when the temperature of the water ring water supply pipeline ≥ 10°C, turn off the gas boiler and the corresponding boiler system circulating pump, and turn on the buried pipe system circulating pump; When the temperature of the water ring water supply pipeline ≥ 25°C, turn on the buried pipe system circulating pump; when the temperature of the water ring water supply pipeline ≤ 20°C, the buried pipe system circulating pump stops; When any small water source heat pump unit at the end of Office Tower 1 is turned on, the water ring system circulating pump of Office Tower 1 is turned on; when any small water source heat pump unit at the end of Office Tower 2 is turned on, the water ring system circulating pump of Office Tower 2 is turned on; The skirt building system extracts heat from the water ring water supply pipeline. When the heat load demand of the skirt building part cannot be guaranteed, turn on the gas boiler and the boiler system circulating pump for supplementary heating.

7. The integrated source-network-load-storage controlled water-loop heat pump air conditioning system according to claim 5, wherein Under the summer working condition, the temperature of the water ring water supply pipeline is controlled at 25 - 37°C, and the water ring pipe network circulating pump always operates with variable frequency; The waste heat recovery and utilization system of the data room uses the corresponding open cooling tower for heat dissipation, and turns on the corresponding cooling water circulating pump; the water source heat pump system of the skirt building part uses the corresponding open cooling tower for cooling, and neither is connected to the water ring water supply pipeline; Under the summer working condition, the buried pipe heat exchange system is preferentially put into use, and the buried pipe system circulating pump is turned on; When the temperature of the water ring water supply pipeline ≥ 32°C, the closed cooling tower is put into use, and the closed cooling tower circulating pump is turned on; when the temperature of the water ring water supply pipeline ≤ 27°C, the heat dissipation system of the closed cooling tower stops using, and only relies on the buried pipe heat exchange system for heat dissipation.

8. The source-network-load-storage integrated water-loop heat pump air conditioning system according to claim 5, characterized in that Under the transitional season working condition, the temperature of the water ring water supply pipeline is controlled at 8 - 37°C, the water ring pipe network circulating pump always operates with variable frequency, the buried pipe heat exchange system is put into use, and the buried pipe system circulating pump is turned on; When the temperature of the water ring water supply pipeline ≥ 32°C, the closed cooling tower is put into use, and the closed cooling tower circulating pump is turned on; when the temperature of the water ring water supply pipeline ≤ 27°C, the heat dissipation system of the closed cooling tower stops using, and only relies on the buried pipe heat exchange system for heat dissipation.

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