CN112163319A - Heat loss detection method and device - Google Patents
Heat loss detection method and device Download PDFInfo
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Abstract
The application relates to the technical field of heating systems, in particular to a heat loss detection method and device, which are used for acquiring operation information, real-time water temperature information and air temperature information of heating equipment; determining total heat dissipation time according to the real-time water temperature information and a preset water temperature threshold, and determining a heat dissipation coefficient of the heat supply equipment according to the total heat dissipation time, the water temperature threshold and the air temperature information; determining the total mass of water in a hot water pipeline of the heat supply equipment according to the preset specific heat capacity of water, the heat production amount in the operation information, the preset maximum value of water temperature, the air temperature information, the heat dissipation coefficient and the total heat dissipation time; the heat loss of the heat supply equipment is determined according to the specific heat capacity of the water, the total mass of the water, the maximum water temperature, the air temperature information, the heat dissipation coefficient and the total heat dissipation time, so that the heat loss of the heat supply equipment can be calculated according to the operation information, the real-time water temperature information and the air temperature information without measuring the physical information of the heat supply equipment, and the calculation difficulty of the heat loss is reduced.
Description
Technical Field
The application relates to the technical field of heating systems, in particular to a heat loss detection method and device.
Background
At present, when heat loss is calculated, physical information of heat supply equipment, such as the inner diameter of a heat insulation pipe, the outer diameter of the heat insulation pipe, the thermal resistance of the inner wall, the thermal resistance of a steel pipe, the thermal resistance of a heat insulation layer, the thermal resistance from an outer heat insulation layer of a pipeline to ambient air, the length of the pipeline and the like, needs to be acquired first, and then the heat loss of the heat supply equipment is calculated according to the acquired physical information.
Disclosure of Invention
The embodiment of the application provides a heat loss detection method and device, so as to reduce the calculation difficulty of heat loss.
The embodiment of the application provides the following specific technical scheme:
a method of heat loss detection, comprising:
acquiring operation information, real-time water temperature information and air temperature information of heat supply equipment, wherein the operation information at least comprises the heat production quantity of the heat supply equipment, the real-time water temperature information represents the real-time temperature of water in a hot water pipeline of the heat supply equipment, and the air temperature information represents the temperature of air at the periphery of the heat supply equipment;
determining total heat dissipation time according to the real-time water temperature information and a preset water temperature threshold, and determining a heat dissipation coefficient of the heat supply equipment according to the total heat dissipation time, the water temperature threshold and the air temperature information, wherein the total heat dissipation time represents the time required by a hot water pipeline of the heat supply equipment to dissipate heat from the maximum water temperature and reduce the heat to the minimum water temperature;
determining the total mass of water in a hot water pipeline of the heat supply equipment according to a preset specific heat capacity of water, the heat production quantity, a preset maximum water temperature value, the air temperature information, the heat dissipation coefficient and the total heat dissipation time;
and determining the heat loss of the heat supply equipment according to the specific heat capacity of the water, the total mass of the water, the maximum value of the water temperature, the air temperature information, the heat dissipation coefficient and the total heat dissipation time.
Optionally, determining the total heat dissipation time according to the real-time water temperature information and a preset water temperature threshold value, specifically including:
if the real-time water temperature information is determined to be larger than the preset maximum water temperature value, generating a stop instruction, recording the time for generating the stop instruction, and sending the stop instruction to an operation controller, so that the operation controller controls the heat supply equipment to stop operating according to the stop instruction;
continuously monitoring the real-time water temperature information until the real-time water temperature information is determined to be smaller than a preset water temperature minimum value, generating an operation instruction, recording the time for generating the operation instruction, and sending the operation instruction to the operation controller, so that the operation controller controls the heat supply equipment to start to operate according to the operation instruction;
and obtaining the total heat dissipation time of the heat supply equipment by determining the difference value between the running time and the stopping time.
Optionally, determining a heat dissipation coefficient of the heat supply device according to the total heat dissipation time, the water temperature threshold, and the air temperature information includes:
wherein k represents a heat dissipation coefficient of the heating apparatus, TmaxRepresents the maximum value of the water temperature, TminAnd representing the minimum value of the water temperature, theta represents the air temperature information, and t represents the total heat dissipation time.
Optionally, determining the total mass of water in the hot water pipeline of the heating device according to a preset specific heat capacity of water, the heat generation amount, a preset maximum water temperature value, the air temperature information, the heat dissipation coefficient and the total heat dissipation time, and specifically including:
wherein m represents the total mass of the water, Q represents the amount of heat generation, and c represents the specific heat capacity of the water.
Optionally, determining the heat loss of the heat supply device according to the specific heat capacity of the water, the total mass of the water, the maximum water temperature, the air temperature information, the heat dissipation coefficient, and the total heat dissipation time, specifically including:
Qloss＝cm(Tmax-θ)(1-e-kt)
wherein Q islossRepresenting heat losses of the heating plant.
A heat loss detection device, comprising:
the system comprises an acquisition module, a storage module and a control module, wherein the acquisition module is used for acquiring operation information, real-time water temperature information and air temperature information of heat supply equipment, the operation information at least comprises the heat production quantity of the heat supply equipment, the real-time water temperature information represents the real-time temperature of water in a hot water pipeline of the heat supply equipment, and the air temperature information represents the temperature of air at the periphery of the heat supply equipment;
the first determining module is used for determining total heat dissipation time according to the real-time water temperature information and a preset water temperature threshold value, and determining a heat dissipation coefficient of the heat supply equipment according to the total heat dissipation time, the water temperature threshold value and the air temperature information, wherein the total heat dissipation time represents the time required by a hot water pipeline of the heat supply equipment to dissipate heat from the maximum water temperature and reduce the heat dissipation time to the minimum water temperature;
the second determining module is used for determining the total mass of water in a hot water pipeline of the heat supply equipment according to the preset specific heat capacity of the water, the heat production quantity, the preset maximum value of the water temperature, the air temperature information, the heat dissipation coefficient and the total heat dissipation time;
and the detection module is used for determining the heat loss of the heat supply equipment according to the specific heat capacity of the water, the total mass of the water, the maximum water temperature, the air temperature information, the heat dissipation coefficient and the total heat dissipation time.
Optionally, when determining the total heat dissipation time according to the real-time water temperature information and a preset water temperature threshold, the first determining module is specifically configured to:
if the real-time water temperature information is determined to be larger than the preset maximum water temperature value, generating a stop instruction, recording the time for generating the stop instruction, and sending the stop instruction to an operation controller, so that the operation controller controls the heat supply equipment to stop operating according to the stop instruction;
continuously monitoring the real-time water temperature information until the real-time water temperature information is determined to be smaller than a preset water temperature minimum value, generating an operation instruction, recording the time for generating the operation instruction, and sending the operation instruction to the operation controller, so that the operation controller controls the heat supply equipment to start to operate according to the operation instruction;
and obtaining the total heat dissipation time of the heat supply equipment by determining the difference value between the running time and the stopping time.
Optionally, when determining the heat dissipation coefficient of the heat supply device according to the total heat dissipation time, the water temperature threshold, and the air temperature information, the first determining module is specifically configured to:
wherein k represents a heat dissipation coefficient of the heating apparatus, TmaxRepresents the maximum value of the water temperature, TminAnd representing the minimum value of the water temperature, theta represents the air temperature information, and t represents the total heat dissipation time.
Optionally, the second determining module is specifically configured to:
wherein m represents the total mass of the water, Q represents the amount of heat generation, and c represents the specific heat capacity of the water.
Optionally, the detection module is specifically configured to:
Qloss＝cm(Tmax-θ)(1-e-kt)
wherein Q islossRepresenting heat losses of the heating plant.
In the embodiment of the application, the operation information, the real-time water temperature information and the air temperature information of the heating equipment are obtained, the total heat dissipation time of the heating equipment is determined according to the real-time water temperature information and the preset water temperature threshold, the heat dissipation coefficient of the heating equipment is determined according to the total heat dissipation time, the water temperature threshold and the air temperature information, then the total mass of water in a hot water pipeline of the heating equipment is determined according to the specific heat capacity of the preset water, the heat generation amount, the preset maximum water temperature value, the air temperature information, the heat dissipation coefficient and the total heat dissipation time in the operation information, and finally the heat loss of the heating equipment is determined according to the specific heat capacity of the water, the total mass of the water, the maximum water temperature value, the air temperature information, the heat dissipation coefficient and the total heat dissipation time The heat loss of the heating equipment can be calculated according to the preset specific heat capacity of water, the preset water temperature threshold, the total mass of water, the real-time water temperature information and the air temperature information, and compared with the prior art that the heat loss is calculated by measuring the physical parameters of the heating equipment, the calculation difficulty can be reduced.
Drawings
FIG. 1 is a flow chart of a method of detecting heat loss in an embodiment of the present application;
FIG. 2 is another flow chart of a method of detecting heat loss in an embodiment of the present application;
FIG. 3 is a schematic diagram of a heating system according to an embodiment of the present application;
FIG. 4 is a schematic structural diagram of a heat loss detecting device according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of an electronic device in an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
At present, a heating device is one of infrastructure of a city, the high-quality development of the heating device is directly related to the modernization construction of the city, and in the heating device, when the temperature of the wall of a hot water pipeline of the heating device is higher than that of the ambient air, the heat in the hot water pipeline is dissipated to the atmosphere from the wall surface of the pipeline, so that the heat loss is caused, and therefore, the heat loss needs to be calculated to ensure that the indoor temperature is within a certain temperature range.
In the prior art, when calculating the heat loss, physical information of the heat supply equipment, such as the inner diameter of a heat preservation pipe, the outer diameter of the heat preservation pipe, the thermal resistance of the inner wall, the thermal resistance of a steel pipe, the thermal resistance of the heat preservation layer, the thermal resistance between the heat preservation outer layer of a pipeline and the surrounding air, the length of the pipeline and the like, needs to be obtained first, then, the heat loss is calculated according to the obtained physical information, however, after the system environment is built, relevant data cannot be directly obtained, the system needs to be dismantled and then manually measured, in the prior art, the approximate range of the physical information can be manually estimated, and then, the heat loss is calculated according to the estimated physical information, however, the two calculation modes in the prior art increase the application difficulty and increase the corresponding cost, and the environment where the heat supply equipment is located is very complicated because the pipeline contacts soil, the wall and, the calculation difficulty is increased during calculation.
In order to solve the above problems, in the embodiments of the present application, a heat loss detection method is provided, in which operation information, real-time water temperature information, and air temperature information of a heat supply device are obtained, then, a total heat dissipation time of the heat supply device is determined according to the real-time water temperature information and a preset water temperature threshold, a heat dissipation coefficient of the heat supply device is determined according to the total heat dissipation time, the water temperature threshold, and the air temperature information, then, a total mass of water in a hot water pipe of the heat supply device is determined according to a preset specific heat capacity of water, a heat generation amount, a preset maximum water temperature value, the air temperature information, the heat dissipation coefficient, and the total heat dissipation time, and finally, a heat loss of the heat supply device is determined according to the specific heat capacity of water, the total mass of water, the maximum water temperature value, the air temperature information, the heat dissipation coefficient, and the total heat dissipation time, so, the heat loss of the heating equipment can be calculated, and the calculation difficulty during heat loss calculation is reduced.
Based on the foregoing embodiment, referring to fig. 1, a flowchart of a heat loss detection method in the embodiment of the present application is applied to a server, and specifically includes:
step 100: and acquiring operation information, real-time water temperature information and air temperature information of the heating equipment.
The operation information at least comprises the heat production quantity of the heating equipment, the real-time water temperature information represents the real-time temperature of water in a hot water pipeline of the heating equipment, and the air temperature information represents the temperature of air on the periphery of the heating equipment.
In the embodiment of the application, the heating equipment is arranged in the heating system, in addition, in the heating system, the heating equipment, the meteorological data acquisition equipment and the temperature sensor are further arranged, the heating equipment is used for providing heat, the indoor temperature is maintained in a certain temperature range, and the heating data acquisition equipment, the meteorological data acquisition equipment and the temperature sensor are respectively used for acquiring the operation information, the real-time water temperature information and the air temperature information of the heating equipment.
The heat supply system comprises a heat supply device, a meteorological data acquisition device, a temperature sensor, a server and a heat supply system, wherein the heat supply data acquisition device is used for acquiring operation information of the heat supply device and sending the acquired operation information to the server, the meteorological data acquisition device is used for acquiring the temperature of air around the heat supply system in real time to obtain air temperature information and sending the air temperature information to the server, the temperature sensor is used for detecting the real-time water temperature in a hot water pipeline of the heat supply device to obtain real-time water temperature information and sending the real-time water temperature information to the server, and then the server acquires the operation information, the real-time water temperature.
The operation information at least includes the power generation amount of the heat supply equipment per hour, the heat generation value, the equipment operation time and the heat dissipation time, which are not limited in the embodiment of the present application.
The real-time water temperature information is the real-time temperature of the water in the hot water pipe of the heating device, for example, the real-time temperature of the water in the hot water pipe of the heating device is 60 ℃, which is not limited in the embodiment of the present application.
The air temperature information is the temperature of the outdoor air around the heating equipment, for example, the air temperature information of an office building, and the air temperature information is 25 ℃, which is not limited in the embodiment of the present application.
Furthermore, in the embodiment of the application, after the operation information of the heat supply equipment is collected by the heat supply data collection equipment, the collected operation information is stored in the remote monitoring equipment in a form of a list table, and after the air temperature information around the heat supply equipment is collected by the meteorological data collection equipment, the collected air temperature information is stored in the remote monitoring equipment in a form of a list table, and then the remote monitoring equipment displays the operation information and the air temperature information according to a preset display mode after receiving the operation information and the air temperature information, so that related workers can view the operation information and the air temperature information of the heat supply equipment at will and maintain the heat supply equipment.
Step 110: and determining the total heat dissipation time according to the real-time water temperature information and a preset water temperature threshold, and determining the heat dissipation coefficient of the heat supply equipment according to the total heat dissipation time, the water temperature threshold and the air temperature information.
The total heat dissipation time represents the time required for a hot water pipeline of the heat supply equipment to dissipate heat from the maximum water temperature value and reduce the heat to the minimum water temperature value, the preset water temperature threshold value comprises a preset water temperature maximum value and a preset water temperature minimum value, the maximum water temperature value represents the maximum temperature value of water in the hot water pipeline of the heat supply equipment, and the minimum water temperature value represents the minimum temperature value of water in the hot water pipeline of the heat supply equipment.
In the embodiment of the application, according to real-time water temperature information and a preset water temperature threshold, the total heat dissipation time is determined, and the method specifically includes the following steps:
s1: and if the real-time water temperature information is determined to be larger than the preset maximum water temperature value, generating a stop instruction, recording the time for generating the stop instruction, and sending the stop instruction to the running controller so that the running controller controls the heating equipment to stop running according to the stop running instruction.
In the embodiment of the application, if the heat supply equipment is running at the moment, the temperature sensor collects real-time water temperature information in a hot water pipeline (at a hot water outlet) of the heat supply equipment, the collected real-time water temperature information is sent to the server, the server judges whether the collected real-time water temperature information is greater than a maximum water temperature value or not, if the real-time water temperature information is determined not to be greater than the maximum water temperature value, the heat supply equipment is not controlled, if the real-time water temperature information is determined to be greater than the maximum water temperature value, the real-time water temperature in the hot water pipeline of the heat supply equipment is determined to exceed a water temperature threshold value, an operation stopping instruction is generated, and.
The operation principle of the operation controller is explained as follows:
the operation controller, namely, the temperature controller, realizes automatic adjustment by utilizing the principles of thermal expansion and contraction of temperature sensing fluid and incompressible liquid, the thrust generated by the expansion of the temperature sensing liquid when the control temperature is increased turns the heat medium small to reduce the output temperature, and the thermal liquid contracts when the control temperature is reduced, and the heat medium is opened large under the action of the resetting device to improve the output temperature, so that the controlled temperature reaches and is kept in the set temperature range.
S2: and continuously monitoring the real-time water temperature information until the real-time water temperature information is determined to be smaller than the preset water temperature minimum value, generating an operation instruction, recording the time for generating the operation instruction, and sending the operation instruction to the operation controller so that the operation controller controls the heat supply equipment to start to operate according to the operation instruction.
In this application embodiment, after the operation controller controls the heat supply equipment to stop operating, at this moment, the heat supply equipment stops operating, because the hot water pipeline of the heat supply equipment can dispel the heat, therefore, after the heat supply equipment stops operating, the temperature of water in the hot water pipeline of the heat supply equipment can reduce along with the ambient temperature, continuously monitor the real-time temperature information in the hot water pipeline of the heat supply equipment, and judge whether the real-time temperature information monitored is less than the preset minimum value of water temperature, if it is determined that the real-time temperature information monitored is less than the preset minimum value of water temperature, that is, when the temperature is reduced to the minimum value of water temperature, an operation starting instruction is generated, the time for generating the operation instruction is recorded, and then, the operation starting instruction is sent to the operation controller, so that the operation controller controls the heat supply equipment to.
In the embodiment of the present application, the operation time of the heating device may also be set, and the control may be performed according to a predetermined operation time, for example, the heating device is controlled to operate at 8:00-12:00 per day, which is not limited in the embodiment of the present application.
Therefore, in the embodiment of the application, after the real-time water temperature information exceeds the water temperature threshold, the server generates an operation instruction or a stop instruction, and sends the generated operation instruction or stop instruction to the operation controller, so that the operation controller controls the operation state of the heat supply equipment according to the received operation instruction or stop instruction, thus, different control switching control strategies are adopted in combination with the current water temperature, for example, immediate control, namely control according to the set threshold, round control, namely setting the working time of the heat supply equipment, control according to the preset operation time, and the like, so that the real-time water temperature in a hot water pipeline of the heat supply equipment can be kept in a certain temperature interval, and the normal operation of the heat supply equipment is ensured.
S3: by determining the difference between the running time and the stopping time, the total time for heat dissipation of the heating apparatus is obtained.
In the embodiment of the application, after the running time when the heating equipment starts to run and the stopping time when the heating equipment stops running are obtained, the difference between the running time and the stopping time is determined, and the calculated difference is the total heat dissipation time of the heating equipment.
Further, in order to improve the accuracy of obtaining the total heat dissipation time of the heat supply apparatus, the steps S1-S3 are repeatedly performed a plurality of times, and an average value of the plurality of total heat dissipation times is obtained, for example, the steps S1-S330 may be repeatedly performed, 30 total heat dissipation times are obtained, and the 30 total heat dissipation times are weighted-averaged, and an average value of the 30 total heat dissipation times is obtained.
After confirming the total time of heat dissipation, just can calculate heating equipment's coefficient of heat dissipation according to total time of heat dissipation, temperature threshold value and air temperature information, then according to total time of heat dissipation, temperature threshold value and air temperature information, confirm heating equipment's coefficient of heat dissipation, specifically include:
wherein k represents the heat dissipation coefficient of the heating apparatus, TmaxRepresents the maximum value of water temperature, TminThe minimum value of the water temperature is represented, theta represents air temperature information, and t represents total heat dissipation time.
It should be noted that, in the embodiment of the present application, the air temperature information is integrated air temperature information, and the integrated air temperature information is obtained by performing integral calculation on the air temperature information, specifically, the meteorological data acquisition device is responsible for acquiring real-time air temperature information around the heat supply device, and sending the acquired air temperature information to the server, and then the server performs integral calculation on the air temperature information acquired by the meteorological data acquisition device, so as to obtain the integrated air temperature information.
The cumulative air temperature information may be expressed, for example, as:
where θ represents the cumulative air temperature information, TiRepresenting real-time air temperature information, tiIndicating time and i time.
Step 120: and determining the total mass of water in a hot water pipeline of the heating equipment according to the preset specific heat capacity of the water, the heat production quantity, the preset maximum water temperature value, the air temperature information, the heat dissipation coefficient and the total heat dissipation time.
In this embodiment of the application, the preset water temperature threshold includes a maximum water temperature value and a minimum water temperature value, and therefore, when calculating the total mass of water, according to the preset specific heat capacity of water, the amount of heat generation, the preset maximum water temperature value, the air temperature information, the heat dissipation information and the total heat dissipation time, the total mass of water in the hot water pipeline of the heat supply device is determined, and then when step 120 is executed, the method specifically includes:
wherein m represents the total mass of water, Q represents the amount of heat generated, c represents the specific heat capacity of water, and T represents the specific heat capacity of watermaxThe maximum value of the preset water temperature is shown, e represents a mathematical constant, k represents a heat dissipation coefficient, and t represents the total heat dissipation time.
Step 130: and determining the heat loss of the heating equipment according to the specific heat capacity of the water, the total mass of the water, the maximum water temperature, the air temperature information, the heat dissipation coefficient and the total heat dissipation time.
In the embodiment of the application, after the total mass of water is obtained, the heat loss of the heating equipment can be determined according to the preset specific heat capacity of the water, the preset maximum value of the water temperature, the total mass of the water, the air temperature information, the calculated heat dissipation coefficient and the total heat dissipation time.
In the embodiment of the application, the heat loss of the heating equipment can be calculated according to a thermodynamic formula Q of heat absorbed and released by an object, but in the prior art, m and T are generally difficult to obtain, in the embodiment of the application, the two parameters are obtained by utilizing a data mining idea, along with the wide application of a database system and the high-speed development of a network technology, the database technology also enters a brand new stage, namely, the database only manages some simple data in the past, the database is developed to manage various types of complex data such as graphs, images, audios, videos, electronic files, Web pages and the like generated by various computers, the data volume is also larger and larger, the database also embodies obvious mass information characteristics while providing rich information for people, in the information explosion era, mass information brings many negative effects to people, and most importantly, effective information is difficult to refine, at this time, data mining arises from the birth, and refers to a nontrivial process of revealing implicit, previously unknown and potentially valuable information from a large amount of data in a database, and meanwhile, the data mining is a decision support process, which is mainly based on artificial intelligence, machine learning, pattern recognition, statistics, databases, visualization technologies and the like, can highly automatically analyze data of enterprises, make inductive reasoning, mine out potential patterns therefrom, help decision makers to adjust market strategies, reduce risks and make correct decisions, and therefore, the data mining is very effective in calculating parameters.
After two parameters of m and T are calculated, the heat loss of the heating equipment within a certain period of time is obtained according to the thermodynamics of the heat absorbed and released by the object.
Specifically, in the embodiment of the present application, when the step 120 is executed, the method specifically includes:
Qloss＝cm(Tmax-θ)(1-e-kt)
wherein Q islossRepresenting the heat loss value of the heating equipment, c representing the specific heat capacity of water, TmaxThe maximum value of the preset water temperature is represented, theta represents the integrated air temperature information, e represents a mathematical constant, k represents a heat dissipation coefficient, and t represents the total heat dissipation time, so that the heat loss of the heat supply equipment in a certain time period can be obtained.
In the embodiment of the application, the heat loss of the heating system is calculated by using the ideas of data mining and data analysis, and the method specifically comprises the following steps: the method comprises the steps of obtaining operation information, real-time water temperature information and air temperature information of the heat supply equipment, determining total heat dissipation time of the heat supply equipment according to the real-time water temperature information and a preset water temperature threshold, determining a heat dissipation coefficient of the heat supply equipment according to the total heat dissipation time, the water temperature threshold and the air temperature information, determining total mass of water in a hot water pipeline of the heat supply equipment according to a preset specific heat capacity of water, heat production quantity in the operation information, a maximum water temperature value, air temperature information, the heat dissipation coefficient and the total heat dissipation time, and finally determining heat loss of the heat supply equipment according to the specific heat capacity of water, the total mass of water, the maximum water temperature value, the air temperature information, the calculated heat dissipation coefficient and the total heat dissipation time, so that the heat loss of the heat supply equipment is calculated on the premise of not changing a building environment, and the method in the embodiment of the application, need not to measure physical information such as the pipeline internal diameter of the heat supply pipeline of heating equipment, pipeline length, but through the mode of data mining, the heat loss that just can calculate heating equipment of operation information, real-time temperature information and the air temperature information of utilizing the heating equipment who measures need not change original environment of setting up, also need not the manual work and measures, has reduced the application degree of difficulty and has calculated the degree of difficulty.
Based on the foregoing embodiment, referring to fig. 2, another flowchart of a heat loss detection method in the embodiment of the present application is shown, which specifically includes:
step 200: the range of the water temperature threshold is set.
Step 210: the hot water supply of the heating apparatus is stopped.
Step 220: and obtaining the heat production value, the operation time of the heating equipment, the total heat dissipation time and the temperature difference.
Step 230: the step 200 and 22030 times are repeated.
Step 240: and acquiring real-time outdoor air temperature information through meteorological data acquisition equipment.
Step 250: and integrating and calculating the air temperature information to obtain integrated and divided air temperature information.
Wherein the content of the first and second substances,
step 260: and calculating to obtain a heat dissipation coefficient k representing the heat dissipation capacity of the heating equipment.
Wherein the content of the first and second substances,
step 270: and calculating to obtain the total mass of water in the hot water pipeline of the heating equipment.
Wherein the content of the first and second substances,
step 280: by calculating Qloss＝cm(Tmax-θ)(1-e-kt) To obtain the heat loss Qloss。
In the embodiment of the application, the heat loss of the heat supply equipment is calculated by using the ideas of data mining and data analysis, the operation information, the real-time water temperature information and the air temperature information of the heat supply equipment are obtained, the total mass of water in a hot water pipeline of the heat supply equipment is determined according to the operation information, the real-time water temperature information and the air temperature information, the integrated air temperature information, the heat dissipation coefficient and the heat dissipation total time are calculated according to the operation information, the real-time water temperature information and the air temperature information, and the heat loss of the heat supply equipment is determined according to the preset specific heat capacity of water, the preset maximum water temperature value, the total mass of water, the integrated air temperature information, the heat dissipation coefficient and the heat dissipation total time, so that the physical information of components of the heat supply equipment, such as the inner diameter of a heat preservation pipe, the outer diameter of the heat preservation pipe, the heat resistance, The thermal resistance between the outer layer of the pipeline message and the ambient air and the like saves the labor and the construction cost, the other operation and maintenance costs are correspondingly reduced, and the application difficulty is reduced because the original construction environment is not required to be changed.
Based on the above embodiment, referring to fig. 3, a schematic structural diagram of a heating system in an embodiment of the present application specifically includes:
1. cogeneration unit: for supplying heat.
In the embodiment of the application, the heat supply equipment is a cogeneration unit, and the cogeneration unit is used for supplying heat.
2. Novel information acquisition equipment: the method is used for acquiring the operation information, the real-time water temperature information and the air temperature information of the heating equipment.
In the embodiment of the application, the novel information acquisition equipment at least comprises meteorological data acquisition equipment, heat supply data acquisition equipment and temperature control equipment.
The meteorological data acquisition equipment is used for acquiring air temperature information around the heating system and storing the acquired air temperature information into the remote monitoring system in a form of a list and connection table.
The heat supply data acquisition equipment is used for acquiring the operation information of the cogeneration unit and storing the acquired operation information into the remote monitoring system in a form of a list table.
Wherein the operation information at least comprises the power generation amount, the heat generation value, the equipment operation time and the heat dissipation time per hour.
The temperature controller is composed of a temperature sensor and an operation controller, the temperature sensor is responsible for collecting real-time water temperature information in a hot water pipeline (at a hot water outlet), when the real-time water temperature information exceeds a threshold value, the operation controller can enable the cogeneration unit to carry out an operation or stop instruction to control the operation state of the cogeneration unit, through the function, the cogeneration unit can identify a control instruction issued by a control system, then different control pull-close control strategies are provided by combining the current water temperature, for example, immediate control is carried out, control is carried out according to the set threshold value, the turn control is carried out, the working time of the cogeneration unit is set, control is carried out according to the preset operation time, and the like.
In the embodiment of the application, in the original system of building, embedding temperature controller can guarantee that the temperature lasts in certain temperature range.
3. Remote monitoring system: the system is used for acquiring the air temperature information acquired by the meteorological data acquisition equipment and the operation information of the cogeneration unit acquired by the heat supply data acquisition equipment.
4. A server: and the method is used for calculating the heat loss of the cogeneration unit according to the operation information, the air temperature information and the real-time water temperature information.
In the embodiment of the present application, the heat loss is calculated according to a thermodynamic formula Q of the heat absorbed and released by the object, which is cmT, but m and T are generally difficult to obtain in engineering.
Firstly, setting a threshold range of the temperature controller, namely starting the cogeneration unit when the real-time water temperature information reaches the minimum water temperature value, and closing the cogeneration unit when the real-time water temperature information reaches the maximum water temperature value.
And then, closing hot water supply, reducing the water temperature in the heating system along with the external temperature until the water temperature is reduced to a minimum threshold value, and ensuring the automatic operation of the heating system by using the temperature controller.
The above operation is repeated for 30 or more, and an average value of the total time for heat dissipation and an average value of the air temperature information are obtained.
Then, substituting the collected air temperature information, total heat dissipation time and water temperature threshold value into a formula
In (3), a heat dissipation coefficient k is obtained.
Wherein k represents the heat dissipation coefficient, which characterizes the comprehensive heat dissipation capacity, T, of the heating systemmaxRepresents the maximum value of water temperature (water temperature at the time of stopping the cogeneration unit), TminThe minimum value of the water temperature (water temperature at the time of startup of the cogeneration unit) t represents the total heat radiation time.
Theta represents volumetric air temperature information,
wherein, TiIndicating outdoor air temperature information, tiIndicating time and i time.
And since the heating system is already built basically without change, k is a constant value and is obtained after weighting by more than 30 samples.
Then, substituting k into the formula
And (5) obtaining the total mass m of the water in the system.
Wherein Q represents the amount of heat generated, c represents the specific heat capacity of water, and TmaxThe maximum value of water temperature (water temperature when the cogeneration unit is stopped) is represented, θ represents integrated air temperature information, and t represents total heat radiation time.
Finally, according to the thermodynamic formula Q of the heat absorbed and released by the objectloss＝cmT＝cm(Tmax-θ)(1-e-kt) And obtaining the heat loss of the heating system in a certain time period.
Thus, in the embodiment of the application, the heat loss in the system can be calculated without measuring the data of system components, such as the physical information of parameters such as the inner diameter of the heat preservation pipe, the outer diameter of the heat preservation pipe, the heat resistance of the inner wall, the heat resistance of the steel pipe, the heat resistance of the heat preservation layer, the heat resistance between the heat preservation outer layer of the pipeline and the ambient air, the length of the pipeline and the like, the heat dissipation capacity of the whole system can be obtained by embedding the temperature controller, the heat supply data acquisition equipment and the meteorological data acquisition equipment, the water supply quality and the temperature difference in the system are further obtained, and finally the heat loss in the system is obtained, the heat loss of the heat supply system can be calculated without manual measurement, the application difficulty is reduced, the heat supply system provided by the embodiment of the application is used in all the heat and power cogeneration equipment adopting an automatic control strategy and the constructed scenes of the pipeline system, and the application range is very wide.
Based on the same inventive concept, the present application provides a heat loss detection device, which may be, for example, a server in the foregoing embodiments, and may be a hardware structure, a software module, or a hardware structure plus a software module. Based on the above embodiment, referring to fig. 4, a schematic structural diagram of a heat loss detection apparatus in an embodiment of the present application specifically includes:
an obtaining module 400, configured to obtain operation information of a heat supply device, real-time water temperature information, and air temperature information, where the operation information at least includes a heat generation amount of the heat supply device, the real-time water temperature information represents a real-time temperature of water in a hot water pipeline of the heat supply device, and the air temperature information represents a temperature of air around the heat supply device;
a first determining module 410, configured to determine total heat dissipation time according to the real-time water temperature information and a preset water temperature threshold, and determine a heat dissipation coefficient of the heat supply device according to the total heat dissipation time, the water temperature threshold, and the air temperature information, where the total heat dissipation time represents a time required for a hot water pipeline of the heat supply device to dissipate heat from a maximum water temperature value and reduce the heat dissipation time to a minimum water temperature value;
a second determining module 420, configured to determine a total mass of water in a hot water pipeline of the heat supply device according to a preset specific heat capacity of water, the heat generation amount, a preset maximum value of water temperature, the air temperature information, the heat dissipation coefficient, and the total heat dissipation time;
the detection module 430 is configured to determine a heat loss of the heat supply device according to the specific heat capacity of the water, the total mass of the water, the maximum water temperature, the air temperature information, the heat dissipation coefficient, and the total heat dissipation time.
Optionally, when determining the total heat dissipation time according to the real-time water temperature information and a preset water temperature threshold, the first determining module 410 is specifically configured to:
if the real-time water temperature information is determined to be larger than the preset maximum water temperature value, generating a stop instruction, recording the time for generating the stop instruction, and sending the stop instruction to an operation controller, so that the operation controller controls the heat supply equipment to stop operating according to the stop instruction;
continuously monitoring the real-time water temperature information until the real-time water temperature information is determined to be smaller than a preset water temperature minimum value, generating an operation instruction, recording the time for generating the operation instruction, and sending the operation instruction to the operation controller, so that the operation controller controls the heat supply equipment to start to operate according to the operation instruction;
and obtaining the total heat dissipation time of the heat supply equipment by determining the difference value between the running time and the stopping time.
Optionally, when determining the heat dissipation coefficient of the heat supply device according to the total heat dissipation time, the water temperature threshold, and the air temperature information, the first determining module 410 is specifically configured to:
wherein k represents a heat dissipation coefficient of the heating apparatus, TmaxRepresents the maximum value of the water temperature, TminAnd representing the minimum value of the water temperature, theta represents the air temperature information, and t represents the total heat dissipation time.
Optionally, the second determining module 420 is specifically configured to:
wherein m represents the total mass of the water, Q represents the amount of heat generation, and c represents the specific heat capacity of the water.
Optionally, the detection module 430 is specifically configured to:
Qloss＝cm(Tmax-θ)(1-e-kt)
wherein Q islossRepresenting heat losses of the heating plant.
Based on the above embodiments, fig. 5 is a schematic structural diagram of an electronic device in an embodiment of the present application.
An embodiment of the present application provides an electronic device, which may include a processor 510 (CPU), a memory 520, an input device 530, an output device 540, and the like, wherein the input device 530 may include a keyboard, a mouse, a touch screen, and the like, and the output device 540 may include a Display device, such as a Liquid Crystal Display (LCD), a Cathode Ray Tube (CRT), and the like.
Based on the above embodiments, in the embodiments of the present application, there is provided a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the heat loss detection method in any of the above method embodiments.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. A method of detecting heat loss, comprising:
acquiring operation information, real-time water temperature information and air temperature information of heat supply equipment, wherein the operation information at least comprises the heat production quantity of the heat supply equipment, the real-time water temperature information represents the real-time temperature of water in a hot water pipeline of the heat supply equipment, and the air temperature information represents the temperature of air at the periphery of the heat supply equipment;
determining total heat dissipation time according to the real-time water temperature information and a preset water temperature threshold, and determining a heat dissipation coefficient of the heat supply equipment according to the total heat dissipation time, the water temperature threshold and the air temperature information, wherein the total heat dissipation time represents the time required by a hot water pipeline of the heat supply equipment to dissipate heat from the maximum water temperature and reduce the heat to the minimum water temperature;
determining the total mass of water in a hot water pipeline of the heat supply equipment according to a preset specific heat capacity of water, the heat production quantity, a preset maximum water temperature value, the air temperature information, the heat dissipation coefficient and the total heat dissipation time;
and determining the heat loss of the heat supply equipment according to the specific heat capacity of the water, the total mass of the water, the maximum value of the water temperature, the air temperature information, the heat dissipation coefficient and the total heat dissipation time.
2. The method of claim 1, wherein determining the total heat dissipation time according to the real-time water temperature information and a preset water temperature threshold specifically comprises:
if the real-time water temperature information is determined to be larger than the preset maximum water temperature value, generating a stop instruction, recording the time for generating the stop instruction, and sending the stop instruction to an operation controller, so that the operation controller controls the heat supply equipment to stop operating according to the stop instruction;
continuously monitoring the real-time water temperature information until the real-time water temperature information is determined to be smaller than a preset water temperature minimum value, generating an operation instruction, recording the time for generating the operation instruction, and sending the operation instruction to the operation controller, so that the operation controller controls the heat supply equipment to start to operate according to the operation instruction;
and obtaining the total heat dissipation time of the heat supply equipment by determining the difference value between the running time and the stopping time.
3. The method according to claim 2, wherein determining the heat dissipation coefficient of the heating apparatus according to the total heat dissipation time, the water temperature threshold, and the air temperature information specifically comprises:
wherein k represents a heat dissipation coefficient of the heating apparatus, TmaxRepresents the maximum value of the water temperature, TminAnd representing the minimum value of the water temperature, theta represents the air temperature information, and t represents the total heat dissipation time.
4. The method according to claim 3, wherein determining the total mass of water in the hot water pipe of the heating apparatus according to a preset specific heat capacity of water, the heat generation amount, a preset maximum value of water temperature, the air temperature information, the heat dissipation coefficient and the total heat dissipation time comprises:
wherein m represents the total mass of the water, Q represents the amount of heat generation, and c represents the specific heat capacity of the water.
5. The method according to claim 4, wherein determining the heat loss of the heating equipment according to the specific heat capacity of the water, the total mass of the water, the maximum value of the water temperature, the air temperature information, the heat dissipation coefficient and the total heat dissipation time comprises:
Qloss＝cm(Tmax-θ)(1-e-kt)
wherein Q islossRepresenting heat losses of the heating plant.
6. A heat loss sensing device, comprising:
the system comprises an acquisition module, a storage module and a control module, wherein the acquisition module is used for acquiring operation information, real-time water temperature information and air temperature information of heat supply equipment, the operation information at least comprises the heat production quantity of the heat supply equipment, the real-time water temperature information represents the real-time temperature of water in a hot water pipeline of the heat supply equipment, and the air temperature information represents the temperature of air at the periphery of the heat supply equipment;
the first determining module is used for determining total heat dissipation time according to the real-time water temperature information and a preset water temperature threshold value, and determining a heat dissipation coefficient of the heat supply equipment according to the total heat dissipation time, the water temperature threshold value and the air temperature information, wherein the total heat dissipation time represents the time required by a hot water pipeline of the heat supply equipment to dissipate heat from the maximum water temperature and reduce the heat dissipation time to the minimum water temperature;
the second determining module is used for determining the total mass of water in a hot water pipeline of the heat supply equipment according to the preset specific heat capacity of the water, the heat production quantity, the preset maximum value of the water temperature, the air temperature information, the heat dissipation coefficient and the total heat dissipation time;
and the detection module is used for determining the heat loss of the heat supply equipment according to the specific heat capacity of the water, the total mass of the water, the maximum water temperature, the air temperature information, the heat dissipation coefficient and the total heat dissipation time.
7. The apparatus according to claim 6, wherein when determining the total heat dissipation time according to the real-time water temperature information and a preset water temperature threshold, the first determining module is specifically configured to:
if the real-time water temperature information is determined to be larger than the preset maximum water temperature value, generating a stop instruction, recording the time for generating the stop instruction, and sending the stop instruction to an operation controller, so that the operation controller controls the heat supply equipment to stop operating according to the stop instruction;
continuously monitoring the real-time water temperature information until the real-time water temperature information is determined to be smaller than a preset water temperature minimum value, generating an operation instruction, recording the time for generating the operation instruction, and sending the operation instruction to the operation controller, so that the operation controller controls the heat supply equipment to start to operate according to the operation instruction;
and obtaining the total heat dissipation time of the heat supply equipment by determining the difference value between the running time and the stopping time.
8. The apparatus according to claim 7, wherein when determining the heat dissipation coefficient of the heat supply device according to the total heat dissipation time, the water temperature threshold, and the air temperature information, the first determining module is specifically configured to:
wherein k represents a heat dissipation coefficient of the heating apparatus, TmaxRepresents the maximum value of the water temperature, TminAnd representing the minimum value of the water temperature, theta represents the air temperature information, and t represents the total heat dissipation time.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the steps of the method of any of claims 1-5 are implemented when the program is executed by the processor.
10. A computer-readable storage medium having stored thereon a computer program, characterized in that: the computer program when executed by a processor implementing the steps of the method of any one of claims 1 to 5.
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