CN118733850B - A digital twin-based electromechanical energy visualization analysis and processing system - Google Patents
A digital twin-based electromechanical energy visualization analysis and processing system Download PDFInfo
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Abstract
本发明涉及机电能源分析处理领域，具体公开一种基于数字孪生的机电能源可视化分析处理系统，本发明通过获取机房水冷式中央空调中冷冻水循环设备的COP值，并获取冷冻水循环设备的能耗影响因素信息，综合分析冷冻水循环设备的能耗合理性指数，判断冷冻水循环设备的能耗是否异常，从而提高冷冻水循环设备能耗评估结果的准确性和可靠性，避免误判错判；通过分析冷冻水循环设备中各部件的排查优先级系数，确定冷冻水循环设备中各部件的排查顺序，按照排查顺序，对冷冻水循环设备中各部件依次进行能耗异常排查，确定冷冻水循环设备中能耗异常的各部件，进而提高排查的效率，有利于及时采取能源管理措施、优化节能。
The present invention relates to the field of electromechanical energy analysis and processing, and specifically discloses an electromechanical energy visualization analysis and processing system based on digital twin. The present invention obtains the COP value of a chilled water circulation device in a water-cooled central air-conditioning unit in a computer room, obtains information on factors affecting the energy consumption of the chilled water circulation device, comprehensively analyzes the energy consumption rationality index of the chilled water circulation device, and determines whether the energy consumption of the chilled water circulation device is abnormal, thereby improving the accuracy and reliability of the energy consumption evaluation result of the chilled water circulation device and avoiding misjudgment and wrong judgment; by analyzing the troubleshooting priority coefficients of various components in the chilled water circulation device, the troubleshooting order of various components in the chilled water circulation device is determined, and according to the troubleshooting order, energy consumption abnormality troubleshooting is performed on various components in the chilled water circulation device in turn, and various components with abnormal energy consumption in the chilled water circulation device are determined, thereby improving the troubleshooting efficiency, and facilitating timely adoption of energy management measures and optimizing energy saving.
Description
Technical Field
The invention relates to the field of electromechanical energy analysis and processing, in particular to a digital twin-based electromechanical energy visualization analysis and processing system.
Background
The water-cooled central air conditioner is widely applied to large facilities due to the high-efficiency cooling capacity and wide application range, and is a large household for building energy consumption. The chilled water circulation system of the water-cooled central air conditioner is a core part of the water-cooled central air conditioner, and all parts in the chilled water circulation system work cooperatively to realize cooling and dehumidifying of air in a building. Therefore, the method has important significance in monitoring and analyzing the energy consumption of the chilled water circulation system of the water-cooled central air conditioner.
The existing energy consumption monitoring method of the chilled water circulation system of the water-cooled central air conditioner has some defects: in the first aspect, when judging whether the energy consumption of the chilled water circulation system is abnormal, the conventional method uses the COP value of the chilled water circulation system as a judging basis, namely, judges through input power and refrigerating capacity, and does not consider the influence of factors such as seasonal variation, load factor, water quality and the like on COP and further influence on energy consumption rationality judgment, thereby leading to insufficient accuracy and reliability of an evaluation result and easy erroneous judgment.
In the second aspect, in the existing method, after the abnormality occurs in the energy consumption of the chilled water circulation system and when the cause of the abnormality is detected, each part of the chilled water circulation system is detected one by one, the sequence of detecting the parts is not analyzed, the parts with high possibility of abnormal energy consumption are detected preferentially, and therefore, the method has a certain blindness, the difficulty and the task amount of detection are increased, the detection efficiency is low, and therefore energy management measures are not taken timely, and energy conservation is optimized.
Disclosure of Invention
Aiming at the problems, the invention provides an electromechanical energy visual analysis processing system based on digital twinning, which realizes the function of analyzing and processing the electromechanical energy.
The technical scheme adopted for solving the technical problems is as follows: the invention provides a digital twinning-based electromechanical energy visual analysis processing system, which comprises: the device comprises a device COP value acquisition module, a device energy consumption influence factor analysis module, a device energy consumption abnormality judgment module, a device component investigation priority analysis module, a device energy consumption abnormality component determination module and a database.
The equipment energy consumption abnormality judging module is respectively connected with the equipment COP value obtaining module and the equipment energy consumption influencing factor analyzing module, the equipment component checking priority analyzing module is respectively connected with the equipment energy consumption abnormality judging module and the equipment energy consumption abnormality component determining module, and the database is connected with the equipment component checking priority analyzing module.
Device COP value acquisition module: the method is used for acquiring the refrigerating capacity and the total input power of the chilled water circulation equipment in the machine room water-cooled central air conditioner in real time, analyzing the COP value of the chilled water circulation equipment in the machine room water-cooled central air conditioner, and recording the COP value as the COP value of the chilled water circulation equipment.
The equipment energy consumption influence factor analysis module: the method is used for acquiring the energy consumption influence factor information of the chilled water circulation equipment in real time, wherein the energy consumption influence factor information comprises outdoor air temperature, load factor and water quality, and the influence degree coefficient of the energy consumption influence factor of the chilled water circulation equipment is analyzed.
The equipment energy consumption abnormality judging module is used for: and the priority analysis module is used for analyzing the energy consumption rationality index of the chilled water circulation equipment according to the COP value of the chilled water circulation equipment and the influence degree coefficient of the energy consumption influence factor, judging whether the energy consumption of the chilled water circulation equipment is abnormal, carrying out early warning if the energy consumption is abnormal, and executing equipment part investigation.
The equipment component investigation priority analysis module: the method is used for acquiring the historical energy consumption abnormal times, the historical failure times and the using time of each part in the chilled water circulation equipment, analyzing the investigation priority coefficients of each part in the chilled water circulation equipment, obtaining the investigation sequence of each part in the chilled water circulation equipment, and feeding back.
The device energy consumption abnormal component determining module: the method is used for acquiring COP (coefficient of performance) related information of all parts in the refrigeration water circulation equipment according to the checking sequence of all parts in the refrigeration water circulation equipment, analyzing all parts with abnormal energy consumption in the refrigeration water circulation equipment, feeding back, and storing historical energy consumption abnormality checking logs of the refrigeration water circulation equipment.
Database: the method is used for storing the historical energy consumption abnormality investigation log and the historical fault maintenance log of the chilled water circulation equipment.
Compared with the prior art, the electromechanical energy visualization analysis processing system based on digital twinning has the following beneficial effects: 1. according to the invention, the refrigerating capacity and the total input power of the refrigeration water circulation equipment in the machine room water-cooled central air conditioner are obtained, the COP value of the refrigeration water circulation equipment is analyzed, the energy consumption influence factor information of the refrigeration water circulation equipment is obtained, the energy consumption rationality index of the refrigeration water circulation equipment is comprehensively analyzed, and whether the energy consumption of the refrigeration water circulation equipment is abnormal or not is judged, so that the accuracy and the reliability of the energy consumption evaluation result of the refrigeration water circulation equipment are improved, and erroneous judgment is avoided.
2. According to the invention, the historical energy consumption abnormality times, the historical failure times and the using time of each part in the chilled water circulation equipment are obtained, the investigation priority coefficient of each part in the chilled water circulation equipment is analyzed, the investigation sequence of each part in the chilled water circulation equipment is determined, the abnormal energy consumption investigation is sequentially carried out on each part in the chilled water circulation equipment according to the investigation sequence, and each part with abnormal energy consumption in the chilled water circulation equipment is determined, so that the investigation efficiency is improved, and the method is beneficial to timely taking energy management measures and optimizing energy conservation.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a diagram illustrating a system module connection according to the present invention.
Fig. 2 is a diagram showing a structure of a chilled water circulation device in a machine room water-cooled central air conditioner according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 and 2, the invention provides an electromechanical energy visualization analysis processing system based on digital twinning, which comprises an equipment COP value acquisition module, an equipment energy consumption influence factor analysis module, an equipment energy consumption abnormality judgment module, an equipment component investigation priority analysis module, an equipment energy consumption abnormality component determination module and a database.
The equipment energy consumption abnormality judging module is respectively connected with the equipment COP value obtaining module and the equipment energy consumption influencing factor analyzing module, the equipment component checking priority analyzing module is respectively connected with the equipment energy consumption abnormality judging module and the equipment energy consumption abnormality component determining module, and the database is connected with the equipment component checking priority analyzing module.
The equipment COP value acquisition module is used for acquiring the refrigerating capacity and the total input power of the chilled water circulation equipment in the machine room water-cooled central air conditioner in real time, analyzing the COP value of the chilled water circulation equipment in the machine room water-cooled central air conditioner, and recording the COP value as the COP value of the chilled water circulation equipment.
Further, the specific working process of the device COP value obtaining module is as follows: a1: and monitoring the temperature before the chilled water in the chilled water circulation equipment in the machine room water-cooled central air conditioner enters the evaporator and the temperature after the chilled water passes through the evaporator through a temperature sensor to obtain the inlet and outlet temperature difference of the chilled water in the chilled water circulation equipment in the machine room water-cooled central air conditioner.
The flow meter is used for monitoring the amount of chilled water passing through a pipeline in unit time in chilled water circulation equipment in the machine room water-cooled central air conditioner, and the amount of chilled water passing through the pipeline is recorded as the flow rate of chilled water in the chilled water circulation equipment in the machine room water-cooled central air conditioner.
Substituting the temperature difference between the inlet and outlet of the chilled water circulation device in the machine room water-cooled central air conditioner and the water flow into a relation function between the set refrigerating capacity and the temperature difference between the inlet and outlet of the chilled water and the water flow, thereby obtaining the refrigerating capacity of the chilled water circulation device in the machine room water-cooled central air conditioner.
A2: the input power of each component in the chilled water circulation equipment in the machine room water-cooled central air conditioner is monitored through an ammeter, wherein each component comprises a cooling tower, a cooling pump, a water chilling unit, a plate heat exchanger and a freezing pump, and the total input power of the chilled water circulation equipment in the machine room water-cooled central air conditioner is obtained through further accumulation.
A3: the ratio of the refrigerating capacity to the total input power of the chilled water circulation equipment in the computer room water-cooled central air conditioner is used for obtaining the COP value of the chilled water circulation equipment in the computer room water-cooled central air conditioner, and the COP value is recorded as the COP value of the chilled water circulation equipment.
As a preferred scheme, COP represents a coefficient of performance, which is an indicator of the efficiency of a refrigeration or heating system, and represents the ratio of the amount of cold or heat output by the system to the amount of input electrical energy. The higher the COP value, the higher the efficiency of the system to convert energy, the more energy-efficient.
In another embodiment, the chilled water circulation device of the machine room water-cooled central air conditioner is referred to as a chilled water circulation system of the machine room water-cooled central air conditioner. The chilled water circulating system of water-cooled central air conditioner is a key link for ensuring that indoor environment reaches set temperature and humidity condition. The chilled water circulation system comprises a cooling tower, a cooling pump, a water chilling unit, a plate heat exchanger and a chilled pump, wherein the cooling tower is used for reducing the temperature of cooling water in an evaporative heat dissipation mode and providing cooling water required by a condenser of the water chilling unit; the cooling pump is responsible for conveying the water cooled in the cooling tower to a condenser of the water chilling unit, and conveying the hot water back to the cooling tower for cooling after completing heat exchange; the water chiller is core equipment of a chilled water circulation system and comprises a compressor, an evaporator and a condenser, wherein indoor heat is absorbed through circulation of a refrigerant and released into cooling water to generate low-temperature chilled water; the plate heat exchanger is used as a heat exchanger between the refrigerant and the chilled water; the low-temperature chilled water generated by the water chiller is conveyed to the tail end of an air conditioner by the chilled pump, such as a fan coil, an air treatment unit and the like, so that the chilled water is warmed after absorbing indoor heat, and then returns to the water chiller to be cooled, thereby forming a closed cycle.
The equipment energy consumption influence factor analysis module is used for acquiring energy consumption influence factor information of the chilled water circulation equipment in real time, wherein the energy consumption influence factor information comprises outdoor air temperature, load rate and water quality, and analyzing influence degree coefficients of the energy consumption influence factors of the chilled water circulation equipment.
Further, the specific working process of the equipment energy consumption influence factor analysis module is as follows: b1, acquiring the outdoor air temperature of the area where the chilled water circulation device is located through a meteorological measuring tool, and recording the outdoor air temperature as the outdoor air temperature of the chilled water circulation device and representing the outdoor air temperature as。
In another embodiment, the outdoor air temperature of the area where the chilled water circulation device is located is obtained from meteorological data collected by a meteorological department.
By analysis of formulasObtaining outdoor air temperature influence factor of chilled water circulation equipmentWhereinA correction coefficient indicating a preset outdoor air temperature influence factor,Represents a natural constant of the natural product,And representing a preset outdoor air temperature early warning value.
As a preferred scheme, the outdoor air temperature varies with the seasonal variation, which directly affects the heat radiation efficiency of the condenser in the chilled water circulation device. At high temperatures in summer, the condensing pressure of the chilled water circulation plant increases and the compressor in the chilled water circulation plant needs to consume more energy to overcome the higher pressure, resulting in a decrease in COP. In contrast, in cool seasons, chilled water cycle plants run more efficiently due to lower condensing temperatures, and COP values increase.
B2, obtaining the ratio between the actual load of the cold water unit and the rated load of the cold water unit in the cold water circulation equipment, and recording the ratio as the load ratio of the cold water circulation equipment and representing the load ratio as。
As a preferable scheme, the method for obtaining the load rate of the chilled water circulation device comprises the following steps: and obtaining the rated refrigerating capacity of the refrigeration water circulation equipment through a nameplate of the refrigeration water circulation equipment, obtaining the actual refrigerating capacity of the refrigeration water circulation equipment, calculating the ratio of the actual refrigerating capacity to the rated refrigerating capacity of the refrigeration water circulation equipment, and recording the ratio as the ratio between the actual load of a water cooling unit in the refrigeration water circulation equipment and the rated load of the water cooling unit to obtain the load rate of the refrigeration water circulation equipment.
By analysis of formulasObtaining a load factor influence factor of the chilled water circulation equipmentWhereinA correction factor representing a preset load factor influence factor,Indicating a proper load factor of the preset chilled water circulation device,Representing a preset load factor deviation threshold.
In one embodiment, the chilled water circulation plant has a suitable load factor of 1.
As a preferable scheme, the running efficiency of the cold water unit in the cold water circulating equipment is different under different load rates. Generally, COP is higher when the chiller is operating near design or rated load, and efficiency is reduced under light or overload conditions.
B3: monitoring the water quality of the chilled water circulation equipment, setting water quality influence factors corresponding to the water quality, screening to obtain the water quality influence factors of the chilled water circulation equipment, and recording the water quality influence factors as。
As a preferable scheme, poor water quality can cause scaling or corrosion on the surface of a plate heat exchanger in the chilled water circulation equipment, so that the heat exchange efficiency is reduced, and a scale layer can increase heat transfer resistance, so that larger energy input is required for achieving the same refrigeration effect, and the COP is reduced; water quality problems can also affect the efficiency of cooling and freezing pumps in chilled water circulation plants, such as clogging of filters with impurities or increased pipe resistance, resulting in cooling and freezing pumps requiring greater power to operate.
B4: by analysis of formulasObtaining the influence degree coefficient of the energy consumption influence factor of the refrigeration water circulation equipmentWhereinRespectively representing the weights of preset outdoor air temperature influence factors, load factor influence factors and water quality influence factors,。
The equipment energy consumption abnormality judging module is used for analyzing the energy consumption rationality index of the chilled water circulation equipment according to the COP value of the chilled water circulation equipment and the influence degree coefficient of the energy consumption influence factors, judging whether the energy consumption of the chilled water circulation equipment is abnormal, if so, carrying out early warning, and executing the equipment part investigation priority analyzing module.
Further, the specific working process of the equipment energy consumption abnormality judging module is as follows: by analysis of formulasObtaining the energy consumption rationality index of the chilled water circulation equipmentWhereinThe COP value of the chilled water circulation device is shown,Indicating a preset desired COP value of the chilled water circulation device,Representing the compensation amount of the preset COP value of the chilled water circulation device.
Comparing the energy consumption rationality index of the refrigeration water circulation equipment with a preset energy consumption rationality index threshold, if the energy consumption rationality index of the refrigeration water circulation equipment is smaller than the preset energy consumption rationality index threshold, carrying out early warning on the abnormal energy consumption of the refrigeration water circulation equipment, and feeding back the abnormal energy consumption to a remote monitoring terminal of the refrigeration water circulation equipment.
The method and the system can be used for analyzing the COP value of the refrigeration water circulation equipment by acquiring the refrigerating capacity and the total input power of the refrigeration water circulation equipment in the water-cooled central air conditioner of the machine room, acquiring the energy consumption influence factor information of the refrigeration water circulation equipment, comprehensively analyzing the energy consumption rationality index of the refrigeration water circulation equipment, judging whether the energy consumption of the refrigeration water circulation equipment is abnormal or not, thereby improving the accuracy and the reliability of the energy consumption evaluation result of the refrigeration water circulation equipment and avoiding erroneous judgment.
The equipment component investigation priority analysis module is used for acquiring the historical energy consumption abnormal times, the historical failure times and the using time of each component in the chilled water circulation equipment, analyzing the investigation priority coefficients of each component in the chilled water circulation equipment, obtaining the investigation sequence of each component in the chilled water circulation equipment and feeding back.
Further, the specific working process of the equipment component checking priority analysis module is as follows: and extracting a historical energy consumption abnormality troubleshooting log and a historical fault maintenance log of the chilled water circulation equipment stored in the database.
According to the historical energy consumption abnormality investigation log of the refrigeration water circulation equipment, each part for determining the energy consumption abnormality during each time of the historical energy consumption abnormality investigation of the refrigeration water circulation equipment is obtained, and further the method is obtained
Historical energy consumption abnormality number of each component in the chilled water circulation device is recorded as，Represent the firstThe number of the individual components is set,。
According to the historical fault maintenance log of the refrigeration water circulation equipment, the historical fault times of all parts in the refrigeration water circulation equipment are obtained and recorded as。
Acquiring the service time of each component in the chilled water circulation equipment and recording the service time as。
By analysis of formulasObtaining the investigation priority coefficient of each component in the chilled water circulation equipmentWhereinWeights respectively representing preset historical energy consumption abnormal times, historical fault times and using time length,，，The method respectively represents the preset unit historical energy consumption abnormal times, unit historical fault times and influence factors corresponding to unit use time.
Sequencing all the components in the refrigeration water circulation equipment according to the sequence of the checking priority coefficient from large to small to obtain the checking sequence of all the components in the refrigeration water circulation equipment, and feeding back to a remote monitoring terminal of the refrigeration water circulation equipment.
The equipment energy consumption abnormality component determining module is used for acquiring COP (coefficient of performance) related information of each component in the refrigeration water circulation equipment according to the investigation sequence of each component in the refrigeration water circulation equipment, analyzing each component with abnormal energy consumption in the refrigeration water circulation equipment, feeding back the information, and storing historical energy consumption abnormality investigation logs of the refrigeration water circulation equipment.
Further, the equipment energy consumption abnormal part determining module comprises a cooling tower energy consumption abnormal investigation unit, a cooling pump energy consumption abnormal investigation unit, a water chilling unit energy consumption abnormal investigation unit, a plate heat exchanger energy consumption abnormal investigation unit and a freezing pump energy consumption abnormal investigation unit, wherein the specific working process of the cooling tower energy consumption abnormal investigation unit is as follows: acquiring COP (coefficient of performance) related information of a cooling tower in the chilled water circulation equipment, obtaining evaporation efficiency, water drift rate and fan power consumption of the cooling tower in the chilled water circulation equipment, and respectively marking the evaporation efficiency, the water drift rate and the fan power consumption asBy analysis of the formulaObtaining the energy consumption abnormality trend index of the cooling tower in the chilled water circulation equipmentWhereinRespectively representing preset threshold values of evaporation efficiency, drift rate and fan power consumption,Respectively representing preset weight values of evaporation efficiency, drift rate and fan power consumption,。
Comparing the abnormal energy consumption trend index of the cooling tower in the refrigeration water circulation equipment with a preset abnormal energy consumption trend index threshold, and if the abnormal energy consumption trend index of the cooling tower in the refrigeration water circulation equipment is larger than the preset abnormal energy consumption trend index threshold, abnormal energy consumption of the cooling tower in the refrigeration water circulation equipment is caused.
As a preferred option, the evaporation efficiency measures the ability of the cooling tower to cool the hot water, as assessed by the temperature difference of the hot water as it enters and exits the cooling tower. The increased evaporation efficiency of the cooling tower may lead to a reduction in condensing temperature, thereby increasing COP.
As a preferred scheme, the drift rate evaluates the water loss during operation of the cooling tower, indirectly reflecting its efficiency.
As a preferred option, fan power consumption refers to the electrical power consumption of the cooling tower fan operation, and low power consumption fans contribute to an overall COP improvement, in relation to cooling tower efficiency.
In another embodiment, the COP-related information of the component is referred to as a COP evaluation index of the component.
As a preferable scheme, the inspection sequence of each component in the chilled water circulation device, namely the inspection sequence of the cooling tower, the cooling pump, the water chilling unit, the plate heat exchanger and the chilled pump, corresponds to the operation sequence of the cooling tower energy consumption abnormality inspection unit, the cooling pump energy consumption abnormality inspection unit, the water chilling unit energy consumption abnormality inspection unit, the plate heat exchanger energy consumption abnormality inspection unit and the chilled pump energy consumption abnormality inspection unit in the device energy consumption abnormality component determination module.
Further, the specific working process of the cooling pump energy consumption abnormality checking unit is as follows: acquiring COP (coefficient of performance) associated information of a cooling pump in the refrigeration water circulation equipment, obtaining water lift, water flow and pump efficiency of the cooling pump in the refrigeration water circulation equipment, analyzing an energy consumption abnormality trend index of the cooling pump in the refrigeration water circulation equipment, comparing the energy consumption abnormality trend index with a preset energy consumption abnormality trend index, and judging whether the energy consumption of the cooling pump in the refrigeration water circulation equipment is abnormal.
As a preferable scheme, the energy consumption abnormality tendency index of the cooling pump in the chilled water circulation device is analyzed, and the specific method is as follows: acquiring COP (coefficient of performance) related information of a cooling pump in the chilled water circulation equipment, obtaining water lift, water flow and pump efficiency of the cooling pump in the chilled water circulation equipment, and respectively marking the water lift, the water flow and the pump efficiency asBy analysis of the formulaObtaining the energy consumption abnormality trend index of the cooling pump in the chilled water circulation equipmentWhereinRespectively representing preset thresholds of water lift, water flow and pump efficiency,Weights respectively representing preset water lift, water flow and pump efficiency,。
As a preferable scheme, judging whether the energy consumption of a cooling pump in the chilled water circulation equipment is abnormal or not, and specifically, the method comprises the following steps: comparing the abnormal energy consumption trend index of the cooling pump in the refrigeration water circulation equipment with a preset abnormal energy consumption trend index, and if the abnormal energy consumption trend index of the cooling pump in the refrigeration water circulation equipment is larger than the preset abnormal energy consumption trend index, the energy consumption of the cooling pump in the refrigeration water circulation equipment is abnormal.
As a preferred solution, excessive pumping of the cooling pump in the chilled water circulation device, such as excessive flow, excessive pressure, etc., may result in energy waste.
As a preferred scheme, the pump efficiency of the cooling pump directly reflects the mechanical efficiency of the cooling pump and the efficiency of converting electric energy into liquid kinetic energy, and the high-efficiency cooling pump can remarkably reduce energy consumption.
Further, the specific working process of the water chilling unit energy consumption abnormality checking unit is as follows: and acquiring COP (coefficient of performance) associated information of the cold water unit in the cold water circulation equipment, obtaining the refrigerating capacity and the input power of the cold water unit in the cold water circulation equipment, further obtaining the COP value of the cold water unit in the cold water circulation equipment, comparing the COP value with a preset reference COP value of the cold water unit, and if the COP value of the cold water unit in the cold water circulation equipment is smaller than the reference COP value, judging that the energy consumption of the cold water unit in the cold water circulation equipment is abnormal.
As a preferable scheme, the COP of the water chiller is directly determined by the refrigerating capacity and the input power of the water chiller, and the COP is high if the refrigerating capacity is large and the input power is small.
Further, the specific working process of the plate heat exchanger energy consumption abnormality investigation unit is as follows: and acquiring COP (coefficient of performance) associated information of the plate heat exchanger in the refrigeration water circulation equipment, obtaining heat exchange efficiency and pressure drop of the plate heat exchanger in the refrigeration water circulation equipment, analyzing an energy consumption abnormality tendency index of the plate heat exchanger in the refrigeration water circulation equipment, comparing the energy consumption abnormality tendency index with a preset energy consumption abnormality tendency index threshold, and judging whether the energy consumption of the plate heat exchanger in the refrigeration water circulation equipment is abnormal.
As a preferable scheme, the method for analyzing the abnormal tendency index of the energy consumption of the plate heat exchanger in the chilled water circulation equipment comprises the following steps: acquiring COP (coefficient of performance) related information of a plate heat exchanger in the chilled water circulation equipment to obtain heat exchange efficiency and pressure drop of the plate heat exchanger in the chilled water circulation equipment, and respectively marking the heat exchange efficiency and the pressure drop asBy analysis of the formulaObtaining the energy consumption abnormal tendency index of the plate heat exchanger in the chilled water circulation equipmentWhereinRepresenting preset thresholds of heat exchange efficiency and pressure drop respectively,Respectively representing preset weights of heat exchange efficiency and pressure drop,；
As a preferable scheme, judging whether the energy consumption of the plate heat exchanger in the chilled water circulation equipment is abnormal or not, the specific method comprises the following steps: comparing the abnormal energy consumption trend index of the plate heat exchanger in the chilled water circulation equipment with a preset abnormal energy consumption trend index threshold, and if the abnormal energy consumption trend index of the plate heat exchanger in the chilled water circulation equipment is larger than the preset abnormal energy consumption trend index threshold, the energy consumption of the plate heat exchanger in the chilled water circulation equipment is abnormal.
As a preferable scheme, the heat exchange efficiency of the plate heat exchanger is improved, and the energy waste is reduced, so that the COP of the whole system is indirectly improved.
As a preferred solution, an excessively high pressure drop across the plate heat exchanger increases the pump power consumption and reduces the overall system efficiency.
Further, the specific working process of the freeze pump energy consumption abnormality checking unit is as follows: acquiring COP (coefficient of performance) associated information of a freezing pump in the freezing water circulation equipment, obtaining the freezing water flow and the pump efficiency of the freezing pump in the freezing water circulation equipment, analyzing the energy consumption abnormality trend index of the freezing pump in the freezing water circulation equipment, comparing the energy consumption abnormality trend index with a preset energy consumption abnormality trend index threshold, and judging whether the energy consumption of the freezing pump in the freezing water circulation equipment is abnormal or not.
As a preferable scheme, the energy consumption abnormality tendency index of the freezing pump in the freezing water circulation equipment is analyzed, and the specific method is as follows: acquiring COP (coefficient of performance) related information of a freeze pump in the chilled water circulation equipment, obtaining chilled water flow and pump efficiency of the freeze pump in the chilled water circulation equipment, and respectively marking the chilled water flow and the pump efficiency asBy analysis of the formulaObtaining the energy consumption abnormality trend index of the freezing pump in the freezing water circulation equipmentWhereinRespectively representing preset thresholds of chilled water flow and pump efficiency,Respectively representing preset weights of the flow rate of the chilled water and the pump efficiency,。
As a preferable scheme, judging whether the energy consumption of a freezing pump in the freezing water circulation equipment is abnormal or not, and specifically, the method comprises the following steps: comparing the abnormal energy consumption trend index of the freezing pump in the freezing water circulation equipment with a preset abnormal energy consumption trend index threshold, and if the abnormal energy consumption trend index of the freezing pump in the freezing water circulation equipment is larger than the preset abnormal energy consumption trend index threshold, the abnormal energy consumption of the freezing pump in the freezing water circulation equipment is abnormal.
As a preferred solution, the high efficiency cryopump is capable of reducing power consumption.
As a preferred solution, the flow rate of the coolant in the cryopump should be matched to the needs of the chiller and end users, avoiding unnecessary energy consumption.
The invention analyzes the investigation priority coefficient of each part in the freezing water circulation equipment by acquiring the historical energy consumption abnormality times, the historical failure times and the using time of each part in the freezing water circulation equipment, determines the investigation sequence of each part in the freezing water circulation equipment, sequentially performs the energy consumption abnormality investigation on each part in the freezing water circulation equipment according to the investigation sequence, and determines each part with abnormal energy consumption in the freezing water circulation equipment, thereby improving the investigation efficiency, and being beneficial to timely taking energy management measures and optimizing energy conservation.
The database is used for storing historical energy consumption abnormality troubleshooting logs and historical fault maintenance logs of the refrigeration water circulation equipment.
The foregoing is merely illustrative and explanatory of the principles of this invention, as various modifications and additions may be made to the specific embodiments described, or similar arrangements may be substituted by those skilled in the art, without departing from the principles of this invention or beyond the scope of this invention as defined in the claims.
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| CN117979667A (en) * | 2024-04-02 | 2024-05-03 | 深圳勒普拓仪器技术有限公司 | Circulating cooling water control system, method, equipment and medium for large-scale machine room |
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| CN117979667A (en) * | 2024-04-02 | 2024-05-03 | 深圳勒普拓仪器技术有限公司 | Circulating cooling water control system, method, equipment and medium for large-scale machine room |
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