CN118067783A - Method and device for detecting scaling of liquid heater - Google Patents
Method and device for detecting scaling of liquid heater Download PDFInfo
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- CN118067783A CN118067783A CN202410484891.6A CN202410484891A CN118067783A CN 118067783 A CN118067783 A CN 118067783A CN 202410484891 A CN202410484891 A CN 202410484891A CN 118067783 A CN118067783 A CN 118067783A
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- 238000010438 heat treatment Methods 0.000 claims abstract description 70
- 238000001514 detection method Methods 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 55
- 230000007613 environmental effect Effects 0.000 claims description 12
- 238000004590 computer program Methods 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- 230000032683 aging Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000004108 freeze drying Methods 0.000 claims 1
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- 230000015572 biosynthetic process Effects 0.000 description 5
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Abstract
The embodiment of the application provides a method and a device for detecting scaling of a liquid heater. A stop-motion liquid heater, and collecting a plurality of liquid parameters; determining a heating power and an output power of the liquid heater based on the plurality of liquid parameters; determining heat exchange efficiency according to the heating power and the output power; the scaling situation of the liquid heater is determined based on the comparison of the heat exchange efficiency and the preset heat exchange efficiency, and at the moment, the heating power and the output power of the liquid heater are determined based on a plurality of liquid parameters, so that the heating power and the output power of the liquid heater are defined, the heat exchange efficiency is defined according to the heating power and the output power of the liquid heater, the scaling situation of the liquid heater is displayed through the comparison of the heat exchange efficiency and the preset heat exchange efficiency, the real-time tracking of the scaling situation of the liquid heater is realized, meanwhile, the online detection of scale in the liquid heater is realized, and the early warning treatment is facilitated through the scaling situation of the liquid heater.
Description
Technical Field
The application relates to the technical field of scale formation detection of liquid heaters, in particular to a scale formation detection method and device of a liquid heater.
Background
With the development of technology, the current thermal management system in an automobile mainly adopts a liquid heater mode, and water or other liquid is heated by the liquid heater. For the current liquid heater, scale formation is a major problem which puzzles the industry, and when the liquid heater heats liquid, thermally separated sediment or sediment dissolved in the liquid in a pipeline gradually adheres to the surface of the heater, so that scale is formed. In the prior art, aiming at the investigation of the scale of the liquid heater, the scale in the liquid heater cannot be detected on line by manually observing the disassembled heater in a direct physical mode.
Disclosure of Invention
The embodiment of the application provides a method and a device for detecting scaling of a liquid heater, which are used for determining the heating power and the output power of the liquid heater based on a plurality of liquid parameters at least to a certain extent, so as to define the heating power and the output power of the liquid heater, so that the heat exchange efficiency is defined according to the heating power and the output power of the liquid heater, the scaling condition of the liquid heater is presented through the comparison of the heat exchange efficiency and the preset heat exchange efficiency, the real-time tracking of the scaling condition of the liquid heater is realized, the online detection of scale in the liquid heater is realized, and the early warning treatment is further facilitated through the scaling condition of the liquid heater.
Other features and advantages of the application will be apparent from the following detailed description, or may be learned by the practice of the application.
According to an aspect of an embodiment of the present application, there is provided a scale formation detection method of a liquid heater, which is applied to the liquid heater; the method for detecting the scaling of the liquid heater comprises the following steps:
A stop-motion liquid heater, and collecting a plurality of liquid parameters;
Determining a heating power and an output power of the liquid heater based on the plurality of liquid parameters;
Determining heat exchange efficiency according to the heating power and the output power;
The fouling condition of the liquid heater is determined based on the heat exchange efficiency and a comparison of the preset heat exchange efficiency.
Optionally, the fixed-grid liquid heater collects a plurality of liquid parameters, including:
a freeze liquid heater;
traversing the liquid heater and collecting and processing the liquid of the liquid heater;
determining a corresponding specific heat capacity based on the liquid;
monitoring the liquid flow condition of the liquid heater and collecting the liquid flow of the liquid heater;
the water inlet and the water outlet of the liquid heater are monitored, and the water inlet temperature and the water outlet temperature are collected.
Optionally, the determining the heating power and the output power of the liquid heater based on the plurality of liquid parameters includes:
associating specific heat capacity, liquid flow, inlet water temperature and outlet water temperature;
Constructing a measuring and calculating system by comparing the heat capacity, the liquid flow, the water inlet temperature and the water outlet temperature;
in the measuring and calculating system, determining the heating power of the liquid heater based on the specific heat capacity, the liquid flow, the water inlet temperature and the water outlet temperature;
traversing the liquid heater and defining a busbar of the liquid heater;
in the bus, collecting bus voltage and bus current corresponding to the bus;
the output power of the liquid heater is determined from the bus voltage and bus current.
Optionally, the determining the heating power and the output power of the liquid heater based on the plurality of liquid parameters further includes:
；
Wherein Tout is the outlet water temperature of the liquid heater; tin is the water inlet temperature of the liquid heater; cv is the specific heat capacity of the liquid in the liquid heater; q is the liquid flow of the heater;
；
Where Udc is the bus voltage of the liquid heater and Idc is the bus current of the liquid heater.
Optionally, the determining the heat exchange efficiency according to the heating power and the output power includes:
Collecting heating power and output power;
correlating the heating power with the output power;
the heat exchange efficiency is determined based on the ratio between the heating power and the output power.
Optionally, the determining the heat exchange efficiency according to the heating power and the output power further includes:
collecting the surrounding environment of the liquid heater;
Defining environmental characteristics based on the surrounding environment in which the liquid heater is located;
Determining a heat exchange coefficient according to the environmental characteristics;
marking a heat exchange coefficient based on the position of the environmental characteristic;
and combining the heat exchange efficiency and the heat exchange coefficient, and determining the optimized heat exchange efficiency.
Optionally, the determining the scaling condition of the liquid heater based on the comparison of the heat exchange efficiency and the preset heat exchange efficiency includes:
The freeze heat exchange efficiency and the type of the liquid heater;
Matching corresponding preset heat exchange efficiency according to the model of the liquid heater;
Comparing the heat exchange efficiency with a preset heat exchange efficiency;
The fouling condition of the liquid heater is determined based on the heat exchange efficiency and a comparison of the preset heat exchange efficiency.
Optionally, the determining the scaling condition of the liquid heater based on the comparison of the heat exchange efficiency and the preset heat exchange efficiency further comprises:
Determining a heat exchange efficiency difference value based on the heat exchange efficiency and a preset heat exchange efficiency;
Positioning a plurality of heat exchange efficiency location nodes;
Forming a difference graph according to the heat exchange efficiency difference values corresponding to the position nodes of the plurality of heat exchange efficiencies;
defining a scaling factor of the liquid heater according to the difference curve graph and the ageing degree of the liquid heater;
The degree of fouling is defined in terms of the fouling coefficient of the liquid heater.
According to an aspect of an embodiment of the present application, there is provided a fouling detection device for a liquid heater, including:
The acquisition module is used for acquiring a plurality of liquid parameters by using a Yu Dingge liquid heater;
A power module for determining a heating power and an output power of the liquid heater based on the plurality of liquid parameters;
The efficiency module is used for determining heat exchange efficiency according to the heating power and the output power;
and a scaling module for determining a scaling condition of the liquid heater based on the heat exchange efficiency and a comparison of the preset heat exchange efficiencies.
According to an aspect of an embodiment of the present application, there is provided an electronic apparatus including: one or more processors; and a storage means for storing one or more programs which, when executed by the one or more processors, cause the one or more processors to implement the fouling detection method of a liquid heater as described in the above embodiments.
According to an aspect of embodiments of the present application, there is provided a computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device performs the fouling detection method of the liquid heater provided in the above-described embodiment.
In some embodiments of the present application, a liquid heater is fixed to grid and a plurality of liquid parameters are collected; determining a heating power and an output power of the liquid heater based on the plurality of liquid parameters; determining heat exchange efficiency according to the heating power and the output power; the scaling situation of the liquid heater is determined based on the comparison of the heat exchange efficiency and the preset heat exchange efficiency, and at the moment, the heating power and the output power of the liquid heater are determined based on a plurality of liquid parameters, so that the heating power and the output power of the liquid heater are defined, the heat exchange efficiency is defined according to the heating power and the output power of the liquid heater, the scaling situation of the liquid heater is displayed through the comparison of the heat exchange efficiency and the preset heat exchange efficiency, the real-time tracking of the scaling situation of the liquid heater is realized, meanwhile, the online detection of scale in the liquid heater is realized, and the early warning treatment is facilitated through the scaling situation of the liquid heater.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application. It is evident that the drawings in the following description are only some embodiments of the present application and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art. In the drawings:
FIG. 1 illustrates a flow diagram of a method for fouling detection of a liquid heater according to one embodiment of the application;
FIG. 2 shows a schematic flow chart of S110 in FIG. 1;
FIG. 3 shows a schematic flow chart of S120 in FIG. 1;
FIG. 4 shows a schematic flow chart of S130 in FIG. 1;
fig. 5 shows a schematic flow chart of S140 in fig. 1;
FIG. 6 illustrates a schematic diagram of heat exchange efficiency of a liquid heater fouling detection method according to one embodiment of the application;
FIG. 7 shows a block diagram of a method apparatus for fouling detection of a liquid heater according to one embodiment of the application.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the application may be practiced without one or more of the specific details, or with other methods, components, devices, steps, etc. In other instances, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the application.
The block diagrams depicted in the figures are merely functional entities and do not necessarily correspond to physically separate entities. That is, the functional entities may be implemented in software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.
The flow diagrams depicted in the figures are exemplary only, and do not necessarily include all of the elements and operations/steps, nor must they be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be synthesized or partially synthesized, so that the order of actual execution may be changed according to actual situations.
FIG. 1 shows a flow diagram of a method for fouling detection of a liquid heater according to one embodiment of the application. Referring to fig. 1 to 7, the method for detecting the scaling of the liquid heater is applied to the liquid heater, and the method for detecting the scaling of the liquid heater at least includes steps S110 to S150, and is described in detail as follows:
In step S110, the liquid heater is fixed, and a plurality of liquid parameters are collected;
In step S120, heating power and output power of the liquid heater are determined based on the plurality of liquid parameters;
In step S130, heat exchange efficiency is determined according to the heating power and the output power;
in step S140, a fouling condition of the liquid heater is determined based on the heat exchange efficiency and a comparison of the preset heat exchange efficiency.
In an embodiment of the application, a liquid heater is fixed to grid and a plurality of liquid parameters are collected; determining a heating power and an output power of the liquid heater based on the plurality of liquid parameters; determining heat exchange efficiency according to the heating power and the output power; the scaling situation of the liquid heater is determined based on the comparison of the heat exchange efficiency and the preset heat exchange efficiency, and at the moment, the heating power and the output power of the liquid heater are determined based on a plurality of liquid parameters, so that the heating power and the output power of the liquid heater are defined, the heat exchange efficiency is defined according to the heating power and the output power of the liquid heater, the scaling situation of the liquid heater is displayed through the comparison of the heat exchange efficiency and the preset heat exchange efficiency, the real-time tracking of the scaling situation of the liquid heater is realized, meanwhile, the online detection of scale in the liquid heater is realized, and the early warning treatment is facilitated through the scaling situation of the liquid heater.
In step S110, the liquid heater is freeze-sized and a plurality of liquid parameters are collected.
The method for detecting the scaling of the liquid heater comprises the following steps:
Step S111, a grid-fixed liquid heater;
step S112, traversing the liquid heater and collecting and processing the liquid of the liquid heater;
step S113, determining corresponding specific heat capacity based on the liquid;
Step S114, monitoring the liquid flow condition of the liquid heater and collecting the liquid flow of the liquid heater;
step S115, monitoring a water inlet and a water outlet of the liquid heater, and collecting the water inlet temperature and the water outlet temperature.
In an embodiment of the application, the liquid heater is fixed in order to facilitate the traversing of the liquid heater, at which time the liquid heater is traversed and the liquid of the liquid heater is collected and processed in order to collect the liquid parameters of the liquid.
At this time, specific heat capacity of the liquid is detected, corresponding specific heat capacity is determined based on the liquid, and specific heat capacity is introduced; meanwhile, the liquid flow condition of the liquid heater is monitored, and the liquid flow of the liquid heater is collected, so that the liquid flow is determined, further, the water inlet and the water outlet of the liquid heater are monitored, the water inlet temperature and the water outlet temperature are collected, and at the moment, the water inlet temperature, the water outlet temperature, the liquid flow and the specific heat capacity are introduced, so that the heating power of the liquid heater is determined based on the water inlet temperature, the water outlet temperature, the liquid flow and the specific heat capacity.
In step S120, the heating power and the output power of the liquid heater are determined based on the plurality of liquid parameters.
The method for detecting the scaling of the liquid heater comprises the following steps:
step S121, associating specific heat capacity, liquid flow, water inlet temperature and water outlet temperature;
S122, constructing a measuring and calculating system by comparing the heat capacity, the liquid flow, the water inlet temperature and the water outlet temperature;
Step S123, determining heating power of the liquid heater based on specific heat capacity, liquid flow, inlet water temperature and outlet water temperature in a measuring and calculating system;
step S124, traversing the liquid heater and defining a bus of the liquid heater;
step S125, collecting bus voltage and bus current corresponding to the bus in the bus position;
Step S126, determining the output power of the liquid heater according to the bus voltage and the bus current.
In the embodiment of the application, specific heat capacity, liquid flow, water inlet temperature and water outlet temperature are introduced, and the specific heat capacity, liquid flow, water inlet temperature and water outlet temperature are correlated, so that a measuring and calculating system is constructed for the specific heat capacity, liquid flow, water inlet temperature and water outlet temperature, and the calculation among the specific heat capacity, liquid flow, water inlet temperature and water outlet temperature is ensured.
In the measuring and calculating system, determining the heating power of the liquid heater based on the specific heat capacity, the liquid flow, the water inlet temperature and the water outlet temperature; the following are provided:
；
wherein Tout is the outlet water temperature of the liquid heater; tin is the water inlet temperature of the liquid heater; cv is the specific heat capacity of the liquid in the liquid heater; q is the liquid flow of the heater; pwtr is the heating power of the liquid heater.
Therefore, the heating power of the liquid heater is introduced, so that the heating power of the liquid heater is controlled, and the heating of the liquid heater is controlled in power.
In addition, traversing the liquid heater and defining a busbar of the liquid heater; in the bus, collecting bus voltage and bus current corresponding to the bus; determining the output power of the liquid heater according to the bus voltage and the bus current; the following are provided:
；
Wherein Udc is the bus voltage of the liquid heater and Idc is the bus current of the liquid heater; pout is the output power of the liquid heater.
Therefore, the output power of the liquid heater is introduced, so that the output power of the liquid heater is controlled, and at the moment, the output power of the liquid heater and the heating power of the liquid heater are correlated, so that the output power of the liquid heater and the heating power of the liquid heater are controlled in an integral mode, and the heat exchange efficiency of the liquid heater is ensured.
In step S130, the heat exchange efficiency is determined according to the heating power and the output power.
In one embodiment of the application, the specific steps are as follows:
Step S131, collecting heating power and output power;
Step S132, associating the heating power with the output power;
Step S133, determining heat exchange efficiency based on the ratio between the heating power and the output power;
In the embodiment of the application, the heating power and the output power are collected so as to correlate the heating power with the output power, and the operation is carried out between the heating power and the output power, so that the heat exchange efficiency is determined based on the ratio between the heating power and the output power, at the moment, the heat exchange efficiency is introduced, the heat exchange effect of the liquid heater is presented through the heat exchange efficiency, and the scaling condition of the liquid heater is further evaluated so as to quantify the scaling condition of the liquid heater, and the online detection of the scaling condition of the liquid heater is ensured.
In addition, the method for determining heat exchange efficiency according to heating power and output power further comprises: collecting the surrounding environment of the liquid heater; defining environmental characteristics based on the surrounding environment in which the liquid heater is located; determining a heat exchange coefficient according to the environmental characteristics; marking a heat exchange coefficient based on the position of the environmental characteristic; and combining the heat exchange efficiency and the heat exchange coefficient, and determining the optimized heat exchange efficiency.
At the moment, the surrounding environment where the liquid heater is located is collected, and the surrounding environment where the liquid heater is located is managed and controlled so as to define environmental characteristics based on the surrounding environment where the liquid heater is located, so that the heat exchange coefficient is determined according to the environmental characteristics, and then the heat exchange coefficient is introduced, and therefore the heat exchange coefficient is marked based on the position where the environmental characteristics are located; and combining the heat exchange efficiency and the heat exchange coefficient, and determining the optimized heat exchange efficiency.
In step S140, a fouling condition of the liquid heater is determined based on the heat exchange efficiency and a comparison of the preset heat exchange efficiency.
In one embodiment of the present application, the method for detecting fouling of a liquid heater further comprises:
step S141, fixing the heat exchange efficiency and the type of the liquid heater;
Step S142, matching corresponding preset heat exchange efficiency according to the model of the liquid heater;
step S143, comparing the heat exchange efficiency with a preset heat exchange efficiency;
Step S144, determining the scaling condition of the liquid heater based on the comparison of the heat exchange efficiency and the preset heat exchange efficiency.
In the embodiment of the application, the fixed-grid heat exchange efficiency and the model of the liquid heater are matched with the corresponding preset heat exchange efficiency based on the model of the liquid heater so as to compare the heat exchange efficiency with the preset heat exchange efficiency, and the scaling condition of the liquid heater is determined by comparing the heat exchange efficiency with the preset heat exchange efficiency, so that the scaling condition of the liquid heater is estimated based on the difference between the heat exchange efficiency and the preset heat exchange efficiency, the on-line detection of the scaling condition of the liquid heater is ensured, and meanwhile, the attenuation of the heat exchange efficiency is controlled, and the scaling degree of the liquid heater is reflected by the attenuation of the heat exchange efficiency.
In addition, the determining the scaling condition of the liquid heater based on the comparison of the heat exchange efficiency and the preset heat exchange efficiency further comprises: determining a heat exchange efficiency difference value based on the heat exchange efficiency and a preset heat exchange efficiency; positioning a plurality of heat exchange efficiency location nodes; forming a difference graph according to the heat exchange efficiency difference values corresponding to the position nodes of the plurality of heat exchange efficiencies; defining a scaling factor of the liquid heater according to the difference curve graph and the ageing degree of the liquid heater; the degree of fouling is defined in terms of the fouling coefficient of the liquid heater.
In some embodiments of the present application, a liquid heater is fixed to grid and a plurality of liquid parameters are collected; determining a heating power and an output power of the liquid heater based on the plurality of liquid parameters; determining heat exchange efficiency according to the heating power and the output power; the scaling situation of the liquid heater is determined based on the comparison of the heat exchange efficiency and the preset heat exchange efficiency, and at the moment, the heating power and the output power of the liquid heater are determined based on a plurality of liquid parameters, so that the heating power and the output power of the liquid heater are defined, the heat exchange efficiency is defined according to the heating power and the output power of the liquid heater, the scaling situation of the liquid heater is displayed through the comparison of the heat exchange efficiency and the preset heat exchange efficiency, the real-time tracking of the scaling situation of the liquid heater is realized, meanwhile, the online detection of scale in the liquid heater is realized, and the early warning treatment is facilitated through the scaling situation of the liquid heater.
According to the invention, under the condition that the liquid heater is not required to be disassembled, the accurate detection and judgment of the scaling condition inside the liquid heater can be realized; meanwhile, under the condition that other sensors are not required to be added, the calculation of the heat conversion efficiency of the liquid heater can be realized, and therefore the detection of the scaling condition of the liquid heater is realized. Therefore, the on-line detection of the automobile thermal management system can be realized, the shutdown is not needed, the occurrence of worse conditions is prevented, the service life of the whole automobile thermal management system is prolonged, and the maintenance cost is reduced.
The following describes embodiments of the apparatus of the present application that may be used to perform the method of detecting fouling of a liquid heater in the above-described embodiments of the present application. For details not disclosed in the embodiments of the apparatus of the present application, please refer to the embodiments of the method for detecting scaling of a liquid heater according to the present application.
FIG. 7 illustrates a block diagram of a fouling detection device for a liquid heater according to one embodiment of the application.
Referring to fig. 7, a scale formation detecting apparatus of a liquid heater according to an embodiment of the present application includes:
an acquisition module 210 for using Yu Dingge a liquid heater and acquiring a plurality of liquid parameters;
a power module 220 for determining a heating power and an output power of the liquid heater based on the plurality of liquid parameters;
An efficiency module 230 for determining heat exchange efficiency based on the heating power and the output power;
The scaling module 240 is configured to determine a scaling condition of the liquid heater based on the heat exchange efficiency and a comparison of the preset heat exchange efficiencies.
According to an aspect of the embodiments of the present application, there is provided a computer readable medium having stored thereon a computer program which, when executed by a processor, implements a fouling detection method of a liquid heater as described in the above embodiments.
In one embodiment of the present application, there is also provided an electronic device including:
One or more processors;
A storage means for storing one or more programs that, when executed by the one or more processors, cause the one or more processors to implement the method of fouling detection of a liquid heater as described in the previous embodiments.
Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains.
It is to be understood that the application is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (10)
1. The scaling detection method of the liquid heater is characterized by being applied to the liquid heater; the method for detecting the scaling of the liquid heater comprises the following steps:
A stop-motion liquid heater, and collecting a plurality of liquid parameters;
Determining a heating power and an output power of the liquid heater based on the plurality of liquid parameters;
Determining heat exchange efficiency according to the heating power and the output power;
The fouling condition of the liquid heater is determined based on the heat exchange efficiency and a comparison of the preset heat exchange efficiency.
2. The method of claim 1, wherein the freeze-drying the liquid heater and collecting a plurality of liquid parameters comprises:
a freeze liquid heater;
traversing the liquid heater and collecting and processing the liquid of the liquid heater;
determining a corresponding specific heat capacity based on the liquid;
monitoring the liquid flow condition of the liquid heater and collecting the liquid flow of the liquid heater;
the water inlet and the water outlet of the liquid heater are monitored, and the water inlet temperature and the water outlet temperature are collected.
3. The method of claim 2, wherein determining the heating power and the output power of the liquid heater based on the plurality of liquid parameters comprises:
associating specific heat capacity, liquid flow, inlet water temperature and outlet water temperature;
Constructing a measuring and calculating system by comparing the heat capacity, the liquid flow, the water inlet temperature and the water outlet temperature;
in the measuring and calculating system, determining the heating power of the liquid heater based on the specific heat capacity, the liquid flow, the water inlet temperature and the water outlet temperature;
traversing the liquid heater and defining a busbar of the liquid heater;
in the bus, collecting bus voltage and bus current corresponding to the bus;
the output power of the liquid heater is determined from the bus voltage and bus current.
4. A method of fouling detection of a liquid heater according to claim 3, wherein said determining the heating power and the output power of the liquid heater based on a plurality of liquid parameters further comprises:
；
Wherein Tout is the outlet water temperature of the liquid heater; tin is the water inlet temperature of the liquid heater; cv is the specific heat capacity of the liquid in the liquid heater; q is the liquid flow of the heater;
；
Where Udc is the bus voltage of the liquid heater and Idc is the bus current of the liquid heater.
5. The method for detecting fouling of a liquid heater according to claim 4, wherein said determining heat exchange efficiency based on heating power and output power comprises:
Collecting heating power and output power;
correlating the heating power with the output power;
the heat exchange efficiency is determined based on the ratio between the heating power and the output power.
6. The method for detecting fouling of a liquid heater according to claim 5, wherein said determining heat exchange efficiency based on heating power and output power further comprises:
collecting the surrounding environment of the liquid heater;
Defining environmental characteristics based on the surrounding environment in which the liquid heater is located;
Determining a heat exchange coefficient according to the environmental characteristics;
marking a heat exchange coefficient based on the position of the environmental characteristic;
and combining the heat exchange efficiency and the heat exchange coefficient, and determining the optimized heat exchange efficiency.
7. The method for detecting fouling of a liquid heater according to claim 6, wherein said determining the fouling condition of the liquid heater based on the comparison of the heat exchange efficiency and the preset heat exchange efficiency comprises:
The freeze heat exchange efficiency and the type of the liquid heater;
Matching corresponding preset heat exchange efficiency according to the model of the liquid heater;
Comparing the heat exchange efficiency with a preset heat exchange efficiency;
The fouling condition of the liquid heater is determined based on the heat exchange efficiency and a comparison of the preset heat exchange efficiency.
8. The method for detecting fouling of a liquid heater according to claim 7, wherein said determining the fouling condition of the liquid heater based on the comparison of the heat exchange efficiency and the preset heat exchange efficiency further comprises:
Determining a heat exchange efficiency difference value based on the heat exchange efficiency and a preset heat exchange efficiency;
Positioning a plurality of heat exchange efficiency location nodes;
Forming a difference graph according to the heat exchange efficiency difference values corresponding to the position nodes of the plurality of heat exchange efficiencies;
defining a scaling factor of the liquid heater according to the difference curve graph and the ageing degree of the liquid heater;
The degree of fouling is defined in terms of the fouling coefficient of the liquid heater.
9. A fouling detection device for a liquid heater, comprising:
The acquisition module is used for acquiring a plurality of liquid parameters by using a Yu Dingge liquid heater;
A power module for determining a heating power and an output power of the liquid heater based on the plurality of liquid parameters;
The efficiency module is used for determining heat exchange efficiency according to the heating power and the output power;
and a scaling module for determining a scaling condition of the liquid heater based on the heat exchange efficiency and a comparison of the preset heat exchange efficiencies.
10. A computer readable medium having stored thereon a computer program, wherein the computer program, when executed by a processor, implements a fouling detection method of a liquid heater according to any one of claims 1 to 8.
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| CN202410484891.6A CN118067783A (en) | 2024-04-22 | 2024-04-22 | Method and device for detecting scaling of liquid heater |
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| CN202410484891.6A CN118067783A (en) | 2024-04-22 | 2024-04-22 | Method and device for detecting scaling of liquid heater |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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