A composite all-year-round cooling self-adapting high-efficiency energy-saving regulating system and method

Abstract

The present application relates to the technical field of composite all-year cooling self-adaptive high-efficiency energy-saving regulation, and specifically discloses a composite all-year cooling self-adaptive high-efficiency energy-saving regulation system and method, which comprises a cooling mode switching module, a winter specific working condition matching module, a winter cooling effect evaluation module, a summer running working condition matching module, a summer cooling effect evaluation module and a database; the present application automatically switches between the winter free cooling mode and the summer high-efficiency cooling mode by real-time monitoring of the outdoor wet-bulb temperature, and matches the specific working conditions in the winter free cooling mode and the summer high-efficiency cooling mode according to the running data and environmental parameters; meanwhile, the cooling effect of the system is accurately evaluated through scientific cooling effect evaluation indexes, and feedback is performed according to the evaluation results; the present application can make full use of natural cold sources, realize self-adaptive high-efficiency energy-saving operation of the system, improve the reliability and cooling effect of the system, and has significant economic and social benefits.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of composite all-year cooling self-adaptive high-efficiency energy-saving regulation, and relates to a composite all-year cooling self-adaptive high-efficiency energy-saving regulation system and method. BACKGROUND

[0002] With the continuous improvement of energy-saving and environmental protection requirements, higher requirements are put forward for the energy-saving and adaptability of the cooling system. At present, most cooling systems use electric refrigerating units to provide a cold source in winter and summer. This method not only consumes a large amount of electric energy when the outdoor cold source is sufficient in winter, but also is difficult to achieve high-efficiency operation when the load fluctuates in summer. Therefore, it is of great importance to develop a composite all-year cooling self-adaptive high-efficiency energy-saving cooling system.

[0003] The prior art also has the following problems: 1. The existing cooling system cannot automatically switch between winter and summer cooling modes according to the outdoor wet-bulb temperature and other parameters, has poor seasonal adaptability, cannot fully utilize the natural cold source in winter, and results in serious energy waste in winter.

[0004] 2. In winter and summer cooling mode, the specific working conditions cannot be accurately matched according to real-time operation data and environmental parameters, and the system cannot achieve high-efficiency operation, resulting in unsatisfactory energy-saving effect.

[0005] 3. There is a lack of scientific cooling effect evaluation index and method, which reduces the comprehensiveness of the cooling effect evaluation, cannot accurately evaluate the cooling effect of the system, and makes it difficult to optimize the system. SUMMARY

[0006] In view of this, in order to solve the problems raised in the background art, a composite all-year cooling self-adaptive high-efficiency energy-saving regulation system and method are proposed.

[0007] The purpose of the present application can be achieved by the following technical solutions: The present application provides a composite all-year cooling self-adaptive high-efficiency energy-saving regulation system in the first aspect, comprising: a cooling mode switching module, which monitors the temperature of the outdoor wet-bulb in each monitoring period in real time and automatically switches the current belonging cooling mode according to the temperature, wherein the cooling mode includes a winter free cooling mode and a summer high-efficiency cooling mode.

[0008] A winter specific working condition matching module collects the operation data under the winter free cooling mode and the real-time temperature of the outdoor wet-bulb, and matches the specific working conditions under the winter free cooling mode according to the operation data and the real-time temperature, wherein the specific working conditions include a winter free refrigeration working condition, a winter traditional refrigeration working condition, a winter safety refrigeration working condition and a winter maintenance refrigeration working condition.

[0009] The winter cooling effect evaluation module evaluates the cooling effect of the winter free cooling mode based on the operation data in the winter free cooling mode and the average power consumption in the traditional electric refrigeration mode, and feeds back the evaluation result.

[0010] The summer operation condition matching module collects operation data in the summer high-efficiency cooling mode, and matches the operation condition in the summer high-efficiency cooling mode, wherein the operation condition includes a summer high-efficiency refrigeration condition, a summer traditional refrigeration condition, a summer safety refrigeration condition and a summer maintenance refrigeration condition.

[0011] The summer cooling effect evaluation module extracts stable operation data in the summer high-efficiency cooling mode, evaluates the cooling effect of the summer high-efficiency cooling mode based on the stable operation data, and feeds back the evaluation result.

[0012] The second aspect of the present application provides a composite annual cooling self-adaptive high-efficiency energy-saving adjustment method, which comprises the following steps:

[0013] S2, winter specific condition matching: operation data in the winter free cooling mode and real-time temperature of the outdoor wet bulb are collected, and specific conditions in the winter free cooling mode are matched based on the operation data and the real-time temperature, wherein the specific conditions include a winter free refrigeration condition, a winter traditional refrigeration condition, a winter safety refrigeration condition and a winter maintenance refrigeration condition.

[0014] S3, winter cooling effect evaluation: the cooling effect of the winter free cooling mode is evaluated based on the operation data in the winter free cooling mode and the average power consumption in the traditional electric refrigeration mode, and the evaluation result is fed back.

[0015] S4, summer operation condition matching: operation data in the summer high-efficiency cooling mode are collected, and operation conditions in the summer high-efficiency cooling mode are matched, wherein the operation conditions include a summer high-efficiency refrigeration condition, a summer traditional refrigeration condition, a summer safety refrigeration condition and a summer maintenance refrigeration condition.

[0016] S5, summer cooling effect evaluation: stable operation data in the summer high-efficiency cooling mode are extracted, the cooling effect of the summer high-efficiency cooling mode is evaluated based on the stable operation data, and the evaluation result is fed back.

[0017] Compared with the prior art, the embodiments of the present application have at least the following advantages or beneficial effects: (1) the present application automatically switches the winter free cooling mode and the summer high-efficiency cooling mode according to the outdoor wet bulb temperature, fully utilizes the natural cold source, and significantly improves the energy-saving effect of the system.

[0018] (2) The application realizes adaptive and efficient operation of the system, and improves the adaptability and stability of the system by automatically matching specific working conditions in the winter free cooling mode and the summer efficient cooling mode according to real-time operation data and environmental parameters.

[0019] (3) The application realizes adaptive and efficient operation of the system, and improves the adaptability and stability of the system by automatically matching specific working conditions in the winter free cooling mode and the summer efficient cooling mode according to real-time operation data and environmental parameters. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0021] Figure 1 The figure is a schematic diagram of the system structure of the application.

[0022] Figure 2 The figure is a schematic diagram of the method steps of the application.

[0023] Figure 3 The figure is a schematic diagram of the method steps of the application. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only some embodiments of the application, not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the application.

[0025] Please refer to Figure 1 The first aspect of the application provides a composite all-year cooling self-adaptive efficient energy-saving regulation system, which comprises a cooling mode switching module, a winter specific working condition matching module, a winter cooling effect evaluation module, a summer running working condition matching module and a summer cooling effect evaluation module.

[0026] It should be noted that the application also includes a database for storing the temperature threshold, the pressure difference threshold, the wet-bulb temperature threshold for starting the winter free refrigeration working condition, the cooling effect index interval corresponding to each cooling effect, the specific heat capacity of water, the standard instantaneous flow interval corresponding to the refrigeration equipment in normal operation, the standard equipment current interval, the standard equipment voltage interval and the standard cumulative power consumption interval, and the cooling load interval corresponding to the summer high-efficiency refrigeration working condition and the summer safe refrigeration working condition, respectively.

[0027] The winter specific working condition matching module and the winter cooling effect evaluation module are connected, the summer running working condition matching module and the summer cooling effect evaluation module are connected, the winter specific working condition matching module and the summer running working condition matching module are both connected with the cooling mode switching module, the winter specific working condition matching module and the summer running working condition matching module are connected, the winter cooling effect evaluation module and the summer cooling effect evaluation module are connected, and the cooling mode switching module, the winter specific working condition matching module, the winter cooling effect evaluation module, the summer running working condition matching module and the summer cooling effect evaluation module are all connected with the database.

[0028] The cooling mode switching module, which monitors the temperature of the outdoor wet-bulb in each monitoring period in real time and automatically switches the current belonging cooling mode according to the temperature, wherein the cooling mode includes the winter free cooling mode and the summer high-efficiency cooling mode.

[0029] It should be noted that the temperature of the outdoor wet-bulb in each monitoring period is obtained by a high-precision wet-bulb temperature sensor arranged outdoors.

[0030] In the specific embodiment of the application, the specific way of automatically switching the current belonging cooling mode is that: comparing the temperature of the outdoor wet-bulb in each monitoring period with the temperature threshold stored in the database, if the temperature of the outdoor wet-bulb in a monitoring period is less than or equal to the temperature threshold, the monitoring period is recorded as the first monitoring period, and the temperatures in the monitoring periods after the first monitoring period are compared with the temperature threshold, respectively, if the temperatures in the monitoring periods after the first monitoring period are all less than or equal to the temperature threshold, the winter free cooling mode is automatically switched to.

[0031] In one specific embodiment of the application, the temperature threshold stored in the database can be 12℃, because: 12℃ as the trigger threshold of the winter free cooling mode and the summer high-efficiency cooling mode is a comprehensive consideration based on the natural cold source utilization efficiency, the equipment energy efficiency boundary and the actual operation data verification, which covers the climate characteristics of most areas in China, and through the typical working condition test verification, the maximum utilization of natural cold source and the optimal balance of equipment energy efficiency can be realized.

[0032] If the outdoor wet-bulb temperature is greater than the temperature threshold within a certain monitoring period, this monitoring period is recorded as the second monitoring period. The temperature in several monitoring periods after the second monitoring period is compared with the temperature threshold. If the temperature in several monitoring periods after the second monitoring period is greater than the temperature threshold, the system will automatically switch to the summer high-efficiency cooling mode.

[0033] This invention, by automatically switching between a free winter cooling mode and a high-efficiency summer cooling mode based on the outdoor wet-bulb temperature, makes full use of natural cold sources and significantly improves the energy-saving effect of the system.

[0034] The winter specific operating condition matching module collects operating data and real-time outdoor wet-bulb temperature under the winter free cooling mode, and matches specific operating conditions under the winter free cooling mode accordingly. The specific operating conditions include winter free cooling mode, winter traditional cooling mode, winter safe cooling mode, and winter maintenance cooling mode.

[0035] In a specific embodiment of the present invention, the operating data includes instantaneous flow rate, equipment current and equipment voltage, cumulative power consumption, water supply temperature and return temperature of the terminal process equipment, water inlet temperature, water outlet temperature and cooling water flow rate of the cooling tower, and inlet pressure and outlet pressure of the refrigeration equipment.

[0036] It should be noted that the instantaneous flow rate and cooling water flow rate are collected by electromagnetic flow meters in the straight section of the pipeline, the equipment current and voltage are monitored in real time by power monitoring meters, the cumulative power consumption is obtained by smart meters, the supply and return water temperatures of the terminal process equipment, and the inlet and outlet water temperatures of the cooling tower are all collected by Pt100 platinum resistance temperature sensors installed in the pipeline or water collection pan, and the inlet and outlet pressures of the refrigeration equipment are obtained by pressure transmitters installed in the inlet and outlet pipelines of the equipment.

[0037] In a specific embodiment of the present invention, the specific process of matching the specific operating conditions under the winter free cooling mode is as follows: based on the instantaneous flow rate, equipment current and equipment voltage and cumulative power consumption in the operating data under the winter free cooling mode, it is determined whether there is any abnormality in the refrigeration equipment under the winter free cooling mode. If there is an abnormality, it is automatically switched to the traditional winter refrigeration operating condition. If there is no abnormality, the inlet pressure and outlet pressure of the refrigeration equipment are subtracted to obtain the inlet and outlet pressure difference of the refrigeration equipment.

[0038] It should be noted that the specific process of determining whether the refrigeration equipment is abnormal in the winter free cooling mode is that the instantaneous flow, equipment current, equipment voltage and cumulative power consumption in the winter free cooling mode are compared with the standard instantaneous flow interval, standard equipment current interval, standard equipment voltage interval and standard cumulative power consumption interval corresponding to the normal operation of the refrigeration equipment stored in the database. If the instantaneous flow in the winter free cooling mode is not located in the standard instantaneous flow interval or the equipment current is not located in the standard equipment current interval or the equipment voltage is not located in the standard equipment voltage interval or the cumulative power consumption is not located in the standard cumulative power consumption interval, it indicates that the refrigeration equipment is abnormal in the winter free cooling mode. Otherwise, if the instantaneous flow, equipment current, equipment voltage and cumulative power consumption in the winter free cooling mode are all located in the standard instantaneous flow interval, standard equipment current interval, standard equipment voltage interval and standard cumulative power consumption interval, it indicates that the refrigeration equipment is not abnormal in the winter free cooling mode.

[0039] The inlet and outlet pressure difference of the refrigeration equipment is compared with the pressure difference threshold value stored in the database. If the inlet and outlet pressure difference of the refrigeration equipment is greater than or equal to the pressure difference threshold value, it indicates that the refrigeration equipment is blocked, and then the winter maintenance refrigeration working condition is automatically switched. If the inlet and outlet pressure difference of the refrigeration equipment is less than the pressure difference threshold value, the real-time temperature of the outdoor wet bulb is compared with the wet bulb temperature threshold value stored in the database for starting the winter free refrigeration working condition.

[0040] If the real-time temperature of the outdoor wet bulb is less than or equal to the wet bulb temperature threshold value for starting the winter free refrigeration working condition, the winter free refrigeration working condition is automatically switched. Otherwise, the winter safety refrigeration working condition is automatically switched.

[0041] It should be noted that the wet bulb temperature threshold value for starting the winter free refrigeration working condition stored in the database can be 2℃. The winter free cooling is to utilize the lower outdoor temperature to exchange low-temperature cooling water through the cooling tower, and the low-temperature cooling water is exchanged with the indoor process circulating water through the plate heat exchanger, without starting the refrigeration unit to realize the free cooling. Obviously, the outdoor wet bulb temperature needs to be low enough to realize the free cooling.

[0042] In one specific embodiment of the present application, the main equipment started in the winter free refrigeration working condition includes but is not limited to the cooling tower, cooling water pump, free cooling plate exchanger, primary cooling plate exchanger and process cooling water circulating water pump. The main equipment started in the winter traditional refrigeration working condition includes but is not limited to the original refrigeration equipment and terminal process equipment circulating water pump, and the cooling tower is closed. The main equipment started in the winter safety refrigeration working condition includes but is not limited to the cooling tower, original closed heat exchanger and terminal process equipment circulating water pump. The main equipment started in the winter maintenance refrigeration working condition includes but is not limited to the bypass pipeline and terminal process equipment circulating water pump, and the cooling tower and refrigeration equipment are closed for maintenance.

[0043] The winter cooling effect evaluation module evaluates the cooling effect of the winter free cooling mode based on the operation data in the winter free cooling mode and the average power consumption in the traditional electric refrigeration mode, and feeds back.

[0044] It should be noted that the average power consumption in the traditional electric refrigeration mode is extracted from the power monitoring system.

[0045] In specific embodiments of the present application, the specific process of evaluating the cooling effect of the winter free cooling mode is as follows: the average power consumption in the traditional electric refrigeration mode is subtracted from the cumulative power consumption in the operation data in the winter free cooling mode, and the difference is divided by the average power consumption in the traditional electric refrigeration mode to obtain the winter energy saving rate in the winter free cooling mode.

[0046] The instantaneous flow rate, the supply water temperature and the return water temperature of the end process equipment, and the inlet water temperature, the outlet water temperature and the cooling water flow rate of the cooling tower are extracted from the operation data in the winter free cooling mode, and the natural cold source utilization rate in the winter free cooling mode is obtained by coupling analysis.

[0047] Please refer to Figure 3 In specific embodiments of the present application, the specific process of obtaining the natural cold source utilization rate in the winter free cooling mode is as follows: the temperature difference between the return water temperature and the supply water temperature of the end process equipment is multiplied by the instantaneous flow rate and the specific heat capacity of water stored in the database to obtain the total cooling capacity in the winter free cooling mode.

[0048] The temperature difference between the inlet water temperature and the outlet water temperature of the cooling tower is multiplied by the cooling water flow rate of the cooling tower and the specific heat capacity of water to obtain the cooling capacity provided by the natural cold source.

[0049] The proportion between the total cooling capacity in the winter free cooling mode and the cooling capacity provided by the natural cold source is taken as the natural cold source utilization rate in the winter free cooling mode.

[0050] The winter energy saving rate in the winter free cooling mode and the natural cold source utilization rate are subtracted from the set reference winter energy saving rate and the set reference natural cold source utilization rate respectively, and the difference is divided by the set reference winter energy saving rate and the set reference natural cold source utilization rate respectively, and the sum of the two ratios is taken as the cooling effect index of the winter free cooling mode.

[0051] The cooling effect index of the winter free cooling mode is compared with the cooling effect index interval corresponding to each cooling effect stored in the database, and if the cooling effect index of the winter free cooling mode is located in the cooling effect index interval corresponding to a certain cooling effect, the cooling effect is taken as the cooling effect of the winter free cooling mode.

[0052] The summer operation condition matching module collects operation data in the summer high-efficiency cooling mode and matches the operation condition in the summer high-efficiency cooling mode, wherein the operation condition includes a summer high-efficiency refrigeration condition, a summer traditional refrigeration condition, a summer safety refrigeration condition and a summer maintenance refrigeration condition.

[0053] In the embodiment of the application, the specific process of matching the operation condition in the summer high-efficiency cooling mode is as follows: based on the instantaneous flow, the equipment current and the equipment voltage and the cumulative power consumption in the operation data in the summer high-efficiency cooling mode, the refrigeration equipment is judged whether to exist abnormality in the summer high-efficiency cooling mode according to the same judgment mode as whether to exist abnormality in the winter free cooling mode, if the abnormality exists, the summer traditional refrigeration condition is automatically switched, if the abnormality does not exist, the inlet pressure and the outlet pressure of the refrigeration equipment are subtracted to obtain the inlet and outlet pressure difference of the refrigeration equipment.

[0054] It should be noted that the instantaneous flow, the equipment current and the equipment voltage and the cumulative power consumption in the summer high-efficiency cooling mode are the same as the collection mode in the winter free cooling mode, which will not be repeated here.

[0055] The inlet and outlet pressure difference of the refrigeration equipment is compared with the pressure difference threshold value stored in the database, if the inlet and outlet pressure difference of the refrigeration equipment is greater than or equal to the pressure difference threshold value, it indicates that the refrigeration equipment exists blockage, then the summer maintenance refrigeration condition is automatically switched, if the inlet and outlet pressure difference of the refrigeration equipment is less than the pressure difference threshold value, the product of the temperature difference between the return water temperature and the water supply temperature of the terminal process equipment and the instantaneous flow is recorded as the cooling load in the summer high-efficiency cooling mode.

[0056] The cooling load in the summer high-efficiency cooling mode is matched with the cooling load intervals corresponding to the summer high-efficiency refrigeration condition and the summer safety refrigeration condition stored in the database, if the cooling load in the summer high-efficiency cooling mode is located in the cooling load interval corresponding to the summer high-efficiency refrigeration condition, the summer high-efficiency refrigeration condition is automatically switched, if the cooling load in the summer high-efficiency cooling mode is located in the cooling load interval corresponding to the summer safety refrigeration condition, the summer safety refrigeration condition is automatically switched.

[0057] The embodiment of the application automatically matches the specific conditions in the winter free cooling mode and the summer high-efficiency cooling mode according to the real-time operation data and the environmental parameters, realizes the adaptive and efficient operation of the system, and improves the adaptability and stability of the system.

[0058] In one specific embodiment of the present application, the main open equipment in the summer high-efficiency refrigeration working condition includes but is not limited to the high-efficiency refrigeration host, the cooling tower (for heat dissipation), and the circulating water pump of the terminal process equipment; the main open equipment in the summer traditional refrigeration working condition includes but is not limited to the original refrigeration equipment, the cooling tower (for heat dissipation), and the circulating water pump of the terminal process equipment; the main open equipment in the summer safety refrigeration working condition includes but is not limited to the high-efficiency refrigeration host, the original closed heat exchanger, the cooling tower, and the circulating water pump of the terminal process equipment; the main open equipment in the summer maintenance refrigeration working condition includes but is not limited to the bypass pipeline and the circulating water pump of the terminal process equipment, and the refrigeration host and the cooling tower are closed for maintenance.

[0059] The summer cooling effect evaluation module extracts the stable operation data in the summer high-efficiency cooling mode, evaluates the cooling effect of the summer high-efficiency cooling mode based on the stable operation data, and feeds back the evaluation result.

[0060] In one specific embodiment of the present application, the specific process of evaluating the cooling effect of the summer high-efficiency cooling mode includes the following steps: comprehensively analyzing the supply water temperature, the return water temperature, the supply water pressure, and the return water pressure of each monitoring time point corresponding to each operation working condition in the stable operation data in the summer high-efficiency cooling mode, and obtaining the cooling effect index of the summer high-efficiency cooling mode.

[0061] It should be noted that the supply water temperature and the return water temperature are collected by the Pt100 platinum resistance temperature sensor arranged in the supply water pipeline, and the supply water pressure and the return water pressure are collected by the pressure sensor arranged at the pipeline opening of the supply water pipeline and the pipeline opening of the return water pipeline.

[0062] In one specific embodiment of the present application, the specific process of obtaining the cooling effect index of the summer high-efficiency cooling mode includes the following steps: subtracting the supply water temperature and the return water temperature of each monitoring time point corresponding to each operation working condition in the summer high-efficiency cooling mode, taking the absolute value of the difference as the supply-return water temperature difference of each monitoring time point corresponding to each operation working condition.

[0063] The supply-return water temperature difference deviation of adjacent monitoring time points corresponding to each operation working condition is obtained, the supply-return water temperature difference deviations of all adjacent monitoring time points are summed, and then divided by the number of monitoring time point intervals to obtain the average supply-return water temperature difference deviation corresponding to each operation working condition, and the average supply-return water temperature difference deviation is subtracted from the set reference supply-return water temperature difference deviation, and the difference is divided by the set reference supply-return water temperature difference deviation to obtain the supply-return water temperature difference deviation degree corresponding to each operation working condition.

[0064] The return water pressure and the supply water pressure of each monitoring time point corresponding to each operation condition in the summer high-efficiency cooling mode are subtracted to obtain the supply-return water pressure difference of each monitoring time point corresponding to each operation condition, the average supply-return water pressure difference corresponding to each operation condition is obtained by averaging calculation, and the average supply-return water pressure difference is subtracted from the set reference supply-return water pressure difference, and the difference is divided by the set reference supply-return water pressure difference to obtain the supply-return water pressure difference deviation degree corresponding to each operation condition.

[0065] The supply-return water temperature difference deviation degree and the supply-return water pressure difference deviation degree corresponding to each operation condition are weighted and summed respectively with the corresponding proportion weight to obtain the cooling effect index corresponding to each operation condition, and the cooling effect index of the summer high-efficiency cooling mode is obtained by averaging calculation.

[0066] In one embodiment of the application, when calculating the cooling effect index corresponding to each operation condition, the corresponding proportion weight of the supply-return water temperature difference deviation degree is usually greater than that of the supply-return water pressure difference deviation degree. This is because the supply-return water temperature difference directly determines the cooling capacity of the terminal equipment, and its deviation will significantly affect the operation accuracy of the process equipment, which belongs to the core functional index. The supply-return water pressure difference mainly affects the water flow delivery efficiency, and the excessive deviation will increase the energy consumption of the water pump or cause insufficient flow, but it is an auxiliary parameter. From the system operation priority, the supply-return water temperature difference needs to be ensured to meet the basic cooling demand, and then the pressure difference is optimized to improve the energy saving, so the supply-return water temperature difference deviation degree dominates the weight in the cooling effect index, and the proportion weights of the supply-return water temperature difference deviation degree and the supply-return water pressure deviation degree are 0.65 and 0.35 respectively.

[0067] The cooling effect index of the summer high-efficiency cooling mode is compared with the cooling effect index interval corresponding to each cooling effect, and if the cooling effect index of the summer high-efficiency cooling mode is located in the cooling effect index interval corresponding to a certain cooling effect, the cooling effect is taken as the cooling effect of the summer high-efficiency cooling mode.

[0068] The embodiment of the application builds an evaluation system including the core indexes of the winter energy saving rate, the winter natural cold source utilization rate, the summer supply-return water temperature difference deviation degree and the summer supply-return water pressure difference deviation degree, dynamically feeds back the system operation state through the cooling effect index, ensures the full-cycle cooling standard rate, and ensures the stable and reliable cooling effect of the system.

[0069] Referring to Figure 2 The second aspect of the application provides a composite annual cooling self-adaptive high-efficiency energy-saving regulation method, which comprises the following steps: S1, cooling mode switching: monitoring the temperature of the outdoor wet bulb in each monitoring period in real time, and automatically switching the current belonging cooling mode according to the temperature, wherein the cooling mode comprises a winter free cooling mode and a summer high-efficiency cooling mode.

[0070] S2, winter specific working condition matching: collecting the running data in the winter free cooling mode and the real-time temperature of the outdoor wet bulb, and matching the specific working condition in the winter free cooling mode according to the running data, wherein the specific working condition includes the winter free refrigeration working condition, the winter traditional refrigeration working condition, the winter safety refrigeration working condition and the winter maintenance refrigeration working condition.

[0071] S3, winter cooling effect evaluation: based on the running data in the winter free cooling mode and the average power consumption in the traditional electric refrigeration mode, the cooling effect of the winter free cooling mode is comprehensively evaluated, and feedback is performed.

[0072] S4, summer running working condition matching: collecting the running data in the summer high-efficiency cooling mode, and matching the running working condition in the summer high-efficiency cooling mode, wherein the running working condition includes the summer high-efficiency refrigeration working condition, the summer traditional refrigeration working condition, the summer safety refrigeration working condition and the summer maintenance refrigeration working condition.

[0073] S5, summer cooling effect evaluation: extracting the stable running data in the summer high-efficiency cooling mode, and evaluating the cooling effect of the summer high-efficiency cooling mode according to the stable running data, and performing feedback.

[0074] The above is only an example and description of the concept of the present application, and those skilled in the art can make various modifications or supplements to the described specific embodiments or replace them with similar ways, as long as they do not deviate from the concept of the present application or exceed the scope defined by the present application, which shall belong to the protection scope of the present application.

Claims

1. A composite all-year-round cooling self-adapting high-efficiency energy-saving conditioning system, characterized in that, Comprise: The cold mode switching module, real-time monitoring of outdoor wet ball in each monitoring cycle temperature, and automatically switch the current belongs to the cold mode, wherein, the cold mode includes winter free cooling mode and summer high efficiency cooling mode; Winter specific working condition matching module, collection of winter free cooling mode under the running data and outdoor wet ball real-time temperature, according to the matching in winter free cooling mode under the specific working condition, wherein, the specific working condition includes winter free refrigeration working condition, winter traditional refrigeration working condition, winter safety refrigeration working condition and winter maintenance refrigeration working condition; The specific process of matching the specific working condition under the winter free cooling mode is: Based on the instantaneous flow, equipment current and equipment voltage and cumulative power consumption in the running data under the winter free cooling mode, to determine whether the refrigeration equipment in winter free cooling mode exists abnormal, if there is abnormal, then automatically switch to winter traditional refrigeration working condition, if there is no abnormal, the refrigeration equipment import pressure and export pressure difference, get the import and export pressure difference of refrigeration equipment; The import and export pressure difference of refrigeration equipment and the pressure difference threshold value stored in the database are compared, if the import and export pressure difference of refrigeration equipment is greater than or equal to the pressure difference threshold value, indicating that the refrigeration equipment exists blockage, then automatically switch to winter maintenance refrigeration working condition, if the import and export pressure difference of refrigeration equipment is less than the pressure difference threshold value, the real-time temperature of outdoor wet ball and the wet ball temperature threshold value stored in the database to start winter free refrigeration working condition are compared; If the real-time temperature of outdoor wet ball is greater than or equal to the wet ball temperature threshold value to start winter free refrigeration working condition, then automatically switch to winter free refrigeration working condition, otherwise, then automatically switch to winter safety refrigeration working condition; Winter cooling effect evaluation module, based on the running data under the winter free cooling mode and the average power consumption under the traditional electric refrigeration mode, comprehensive evaluation of winter free cooling mode cooling effect, and feedback; Summer running working condition matching module, collection of summer high efficiency cooling mode under the running data, matching in summer high efficiency cooling mode under the running working condition, wherein, the running working condition includes summer high efficiency refrigeration working condition, summer traditional refrigeration working condition, summer safety refrigeration working condition and summer maintenance refrigeration working condition; The specific process of matching the running working condition under the summer high efficiency cooling mode is: Based on the instantaneous flow, equipment current and equipment voltage and cumulative power consumption in the running data under the summer high efficiency cooling mode, according to the judgment mode of whether the refrigeration equipment in winter free cooling mode exists abnormal, the same way to determine whether the refrigeration equipment in summer high efficiency cooling mode exists abnormal, if there is abnormal, then automatically switch to summer traditional refrigeration working condition, if there is no abnormal, the refrigeration equipment import pressure and export pressure difference, get the import and export pressure difference of refrigeration equipment; The inlet and outlet pressure difference of the refrigeration equipment is compared with the pressure difference threshold value stored in the database. If the inlet and outlet pressure difference of the refrigeration equipment is greater than or equal to the pressure difference threshold value, it indicates that the refrigeration equipment is blocked, and the refrigeration working condition is automatically switched to the summer maintenance mode. If the inlet and outlet pressure difference of the refrigeration equipment is less than the pressure difference threshold value, the temperature difference between the return water temperature and the supply water temperature of the terminal process equipment is multiplied by the cooling water flow rate and the specific heat capacity of water to obtain the cooling load in the summer high-efficiency cooling mode. The cooling load in the summer high-efficiency cooling mode is matched with the cooling load intervals corresponding to the summer high-efficiency refrigeration working condition and the summer safe refrigeration working condition stored in the database. If the cooling load in the summer high-efficiency cooling mode is located in the cooling load interval corresponding to the summer high-efficiency refrigeration working condition, the refrigeration working condition is automatically switched to the summer high-efficiency refrigeration working condition. If the cooling load in the summer high-efficiency cooling mode is located in the cooling load interval corresponding to the summer safe refrigeration working condition, the refrigeration working condition is automatically switched to the summer safe refrigeration working condition. The summer cooling effect evaluation module extracts the stable operation data in the summer high-efficiency cooling mode, evaluates the cooling effect of the summer high-efficiency cooling mode according to the stable operation data, and feeds back the evaluation result.

2. A composite all-year cooling self-adapting high-efficiency energy-saving conditioning system according to claim 1, characterized in that: The specific way of automatically switching the current cooling mode is as follows: The temperature of the outdoor wet bulb in each monitoring period is compared with the temperature threshold value stored in the database. If the temperature of the outdoor wet bulb in a certain monitoring period is less than or equal to the temperature threshold value, the monitoring period is recorded as the first monitoring period, and the temperatures in the monitoring periods after the first monitoring period are compared with the temperature threshold value respectively. If the temperatures in the monitoring periods after the first monitoring period are all less than or equal to the temperature threshold value, the winter free cooling mode is automatically switched to. If the temperature of the outdoor wet bulb in a certain monitoring period is greater than the temperature threshold value, the monitoring period is recorded as the second monitoring period, and the temperatures in the monitoring periods after the second monitoring period are compared with the temperature threshold value respectively. If the temperatures in the monitoring periods after the second monitoring period are all greater than the temperature threshold value, the summer high-efficiency cooling mode is automatically switched to.

3. The composite all-year-round cooling self-adapting high-efficiency energy-saving conditioning system according to claim 1, characterized in that: The operation data includes instantaneous flow rate, equipment current and voltage, cumulative power consumption, supply water temperature and return water temperature of the terminal process equipment, inlet water temperature, outlet water temperature and cooling water flow rate of the cooling tower, and inlet and outlet pressures of the refrigeration equipment.

4. A composite all-year-round cooling self-adapting high-efficiency energy-saving conditioning system according to claim 3, characterized in that: The specific process of comprehensively evaluating the cooling effect of the winter free cooling mode is as follows: The difference between the average power consumption in the traditional electric refrigeration mode and the cumulative power consumption in the winter free cooling mode is obtained, and the ratio of the difference to the average power consumption in the traditional electric refrigeration mode is obtained to obtain the winter energy saving rate in the winter free cooling mode. The supply water temperature and return water temperature of the terminal process equipment, and the inlet water temperature, outlet water temperature and cooling water flow rate of the cooling tower in the winter free cooling mode are extracted from the operation data in the winter free cooling mode, and the natural cold source utilization rate in the winter free cooling mode is obtained through coupled analysis. The cooling effect index of the winter free cooling mode is compared with the cooling effect index intervals corresponding to each cooling effect in the database, and if the cooling effect index of the winter free cooling mode is located in the cooling effect index interval corresponding to a certain cooling effect, the cooling effect is taken as the cooling effect of the winter free cooling mode. The specific process of obtaining the natural cold source utilization rate in the winter free cooling mode is as follows:

5. A composite all-year-round cooling self-adapting high-efficiency energy-saving conditioning system according to claim 4, characterized in that: The temperature difference between the return water temperature and the supply water temperature of the terminal process equipment is multiplied by the cooling water flow of the cooling tower and the specific heat capacity of water stored in the database to obtain the total cooling capacity in the winter free cooling mode. The temperature difference between the inlet water temperature and the outlet water temperature of the cooling tower is multiplied by the cooling water flow of the cooling tower and the specific heat capacity of water to obtain the cooling capacity provided by the natural cold source. The proportion of the cooling capacity provided by the natural cold source to the total cooling capacity in the winter free cooling mode is taken as the natural cold source utilization rate in the winter free cooling mode. The specific process of evaluating the cooling effect of the summer efficient cooling mode is as follows:

6. A composite all-year-round cool-supply self-adapting high-efficiency energy-saving conditioning system according to claim 4, characterized in that: Based on the supply water temperature, return water temperature, supply water pressure and return water pressure of each monitoring time point corresponding to each operating condition in the stable operation data in the summer efficient cooling mode, the cooling effect index of the summer efficient cooling mode is obtained. The cooling effect index of the summer efficient cooling mode is compared with the cooling effect index intervals corresponding to each cooling effect, and if the cooling effect index of the summer efficient cooling mode is located in the cooling effect index interval corresponding to a certain cooling effect, the cooling effect is taken as the cooling effect of the summer efficient cooling mode. The specific process of obtaining the cooling effect index of the summer efficient cooling mode is as follows:

7. A composite all-year-round cool-supply self-adapting high-efficiency energy-saving conditioning system according to claim 6, characterized in that: The supply water temperature and return water temperature of each monitoring time point corresponding to each operating condition in the summer efficient cooling mode are subtracted, and the absolute value of the difference is taken as the supply-return water temperature difference of each monitoring time point corresponding to each operating condition. The supply-return water temperature difference deviation of adjacent monitoring time points corresponding to each operating condition is obtained, the sum of the supply-return water temperature difference deviations of all adjacent monitoring time points is calculated, and then divided by the number of monitoring time point intervals to obtain the average supply-return water temperature difference deviation corresponding to each operating condition. The supply-return water temperature difference deviation of each monitoring time point corresponding to each operating condition in the summer efficient cooling mode is obtained by subtracting the return water pressure and the supply water pressure of each monitoring time point corresponding to each operating condition, and then the average supply-return water pressure difference corresponding to each operating condition is obtained by mean calculation. The average supply-return water pressure difference is subtracted from the set reference supply-return water pressure difference, and the difference is divided by the set reference supply-return water pressure difference to obtain the supply-return water pressure difference deviation degree corresponding to each operating condition. The supply and return water temperature difference deviation and the supply and return water pressure difference deviation corresponding to each operation condition are weighted and summed with the corresponding proportion weight to obtain a cooling effect index corresponding to each operation condition, and the cooling effect index corresponding to each operation condition is averaged to obtain a cooling effect index of the summer high-efficiency cooling mode.

8. A composite all-year-round cooling self-adapting high-efficiency energy-saving regulation method, characterized in that, It comprises: S1, cooling mode switching: real-time monitoring of the temperature of the outdoor wet bulb in each monitoring period, and automatic switching of the current belonging cooling mode according to the temperature, wherein the cooling mode includes a winter free cooling mode and a summer high-efficiency cooling mode; S2, winter specific condition matching: collecting operation data under the winter free cooling mode and real-time temperature of the outdoor wet bulb, and matching specific conditions under the winter free cooling mode according to the operation data and the real-time temperature of the outdoor wet bulb, wherein the specific conditions include a winter free refrigeration condition, a winter traditional refrigeration condition, a winter safety refrigeration condition and a winter maintenance refrigeration condition; The specific process of matching the specific conditions under the winter free cooling mode is as follows: Based on the instantaneous flow, equipment current and equipment voltage and cumulative power consumption in the operation data under the winter free cooling mode, it is judged whether the refrigeration equipment has an abnormality under the winter free cooling mode, if there is an abnormality, the winter traditional refrigeration condition is automatically switched, if there is no abnormality, the inlet pressure and outlet pressure of the refrigeration equipment are subtracted to obtain the inlet and outlet pressure difference of the refrigeration equipment; The inlet and outlet pressure difference of the refrigeration equipment is compared with the pressure difference threshold value stored in the database, if the inlet and outlet pressure difference of the refrigeration equipment is greater than or equal to the pressure difference threshold value, it indicates that the refrigeration equipment is blocked, and the winter maintenance refrigeration condition is automatically switched, if the inlet and outlet pressure difference of the refrigeration equipment is less than the pressure difference threshold value, the real-time temperature of the outdoor wet bulb is compared with the wet bulb temperature threshold value stored in the database for starting the winter free refrigeration condition; If the real-time temperature of the outdoor wet bulb is greater than or equal to the wet bulb temperature threshold value for starting the winter free refrigeration condition, the winter free refrigeration condition is automatically switched, otherwise, the winter safety refrigeration condition is automatically switched; S3, winter cooling effect evaluation: based on the operation data under the winter free cooling mode and the average power consumption under the traditional electric refrigeration mode, the cooling effect of the winter free cooling mode is comprehensively evaluated and fed back; S4, summer operation condition matching: collecting operation data under the summer high-efficiency cooling mode, and matching operation conditions under the summer high-efficiency cooling mode, wherein the operation conditions include a summer high-efficiency refrigeration condition, a summer traditional refrigeration condition, a summer safety refrigeration condition and a summer maintenance refrigeration condition; The specific process of matching the operation conditions under the summer high-efficiency cooling mode is as follows: Based on the instantaneous flow, equipment current and equipment voltage and cumulative power consumption in the operation data under the summer high-efficiency cooling mode, whether the refrigeration equipment has an abnormality under the summer high-efficiency cooling mode is judged in the same way as whether the refrigeration equipment has an abnormality under the winter free cooling mode, if there is an abnormality, the summer traditional refrigeration condition is automatically switched, if there is no abnormality, the inlet pressure and outlet pressure of the refrigeration equipment are subtracted to obtain the inlet and outlet pressure difference of the refrigeration equipment; The inlet-outlet pressure difference of the refrigeration equipment is compared with the pressure difference threshold value stored in the database. If the inlet-outlet pressure difference of the refrigeration equipment is greater than or equal to the pressure difference threshold value, it indicates that the refrigeration equipment is blocked, and the summer maintenance refrigeration working condition is automatically switched to. If the inlet-outlet pressure difference of the refrigeration equipment is less than the pressure difference threshold value, the temperature difference between the return water temperature and the supply water temperature of the terminal process equipment is multiplied by the cooling water flow of the cooling tower and the specific heat capacity of water, which is recorded as the cooling load under the summer high-efficiency cooling mode; The cooling load under the summer high-efficiency cooling mode is matched with the cooling load intervals corresponding to the summer high-efficiency refrigeration working condition and the summer safety refrigeration working condition stored in the database. If the cooling load under the summer high-efficiency cooling mode is located in the cooling load interval corresponding to the summer high-efficiency refrigeration working condition, the summer high-efficiency refrigeration working condition is automatically switched to. If the cooling load under the summer high-efficiency cooling mode is located in the cooling load interval corresponding to the summer safety refrigeration working condition, the summer safety refrigeration working condition is automatically switched to. S5, summer cooling effect evaluation: stable operation data under the summer high-efficiency cooling mode is extracted, based on which the cooling effect of the summer high-efficiency cooling mode is evaluated, and feedback is performed.

Images