CN112163319B - Heat loss detection method and device - Google Patents
Heat loss detection method and device Download PDFInfo
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- CN112163319B CN112163319B CN202010913329.2A CN202010913329A CN112163319B CN 112163319 B CN112163319 B CN 112163319B CN 202010913329 A CN202010913329 A CN 202010913329A CN 112163319 B CN112163319 B CN 112163319B
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- 238000001514 detection method Methods 0.000 title claims abstract description 27
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- 230000017525 heat dissipation Effects 0.000 claims abstract description 159
- 238000010438 heat treatment Methods 0.000 claims abstract description 70
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- 229910000831 Steel Inorganic materials 0.000 description 4
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- G—PHYSICS
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- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/08—Thermal analysis or thermal optimisation
Abstract
The application relates to the technical field of heating systems, in particular to a heat loss detection method and a heat loss detection 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 value, and determining a heat dissipation coefficient of heat supply equipment according to the total heat dissipation time, the water temperature threshold value 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 the water, the heat generation amount in the operation information, the preset water temperature maximum 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 water, the total mass of water, the maximum value of water temperature, the information of air temperature, 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 running 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 the heat loss is calculated, 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 heat resistance of the inner wall, the heat resistance of a steel pipe, the heat resistance of a heat preservation layer, the heat resistance between the heat preservation outer layer of a pipeline and surrounding air, the length of the pipeline and the like, needs to be obtained first, and then the heat loss of the heat supply equipment is calculated according to the obtained physical information.
Disclosure of Invention
The embodiment of the application provides a heat loss detection method and device, which are used for reducing the calculation difficulty of heat loss.
The specific technical scheme provided by the embodiment of the application is as follows:
a heat loss detection method comprising:
acquiring operation information, real-time water temperature information and air temperature information of heat supply equipment, wherein the operation information at least comprises heat generation quantity of the heat supply equipment, the real-time water temperature information represents real-time temperature of water in a hot water pipeline of the heat supply equipment, and the air temperature information represents 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 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 for a hot water pipeline of the heat supply equipment to dissipate heat from the maximum water temperature to the minimum water temperature;
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 generation amount, the preset water temperature maximum value, the air temperature information, the heat dissipation coefficient and the total heat dissipation time;
and determining heat loss of the heat supply equipment according to the specific heat capacity of the water, the total mass of the water, the water temperature maximum value, 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 specifically includes:
if the real-time water temperature information is determined to be greater than the preset water temperature maximum 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 heating 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 heating 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 between the running time and the stopping time.
Optionally, determining the heat dissipation coefficient of the heat supply device according to the total heat dissipation time, the water temperature threshold value and the air temperature information specifically includes:
wherein k represents the heat dissipation coefficient of the heat supply equipment, T max Represents the maximum value of the water temperature, T min And (3) representing the minimum water temperature, θ representing the air temperature information, and t representing the total heat dissipation time.
Optionally, determining the total mass of water in the hot water pipeline of the heat supply device according to the preset specific heat capacity of water, the heat generation amount, the preset water temperature maximum value, the air temperature information, the heat dissipation coefficient and the total heat dissipation time specifically includes:
wherein m represents the total mass of the water, Q represents the heat generation amount, and c represents the specific heat capacity of the water.
Optionally, determining the heat loss of the heating device according to the specific heat capacity of the water, the total mass of the water, the water temperature maximum value, the air temperature information, the heat dissipation coefficient and the total heat dissipation time specifically includes:
Q loss ＝cm(T max -θ)(1-e -kt )
wherein Q is loss Representing the heat loss of the heating apparatus.
A heat loss detection device comprising:
the system comprises an acquisition module, a control 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, wherein the operation information at least comprises heat generation quantity of the heat supply equipment, the real-time water temperature information represents real-time temperature of water in a hot water pipeline of the heat supply equipment, and the air temperature information represents 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 the 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 for a hot water pipeline of the heat supply equipment to dissipate heat from a water temperature maximum value to reduce to a water temperature minimum value;
the second determining module is used for determining the total mass of water in the hot water pipeline of the heat supply device according to the preset specific heat capacity of water, the heat generation amount, the preset water temperature maximum value, 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 water temperature maximum value, 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 greater than the preset water temperature maximum 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 heating 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 heating 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 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 value and the air temperature information, the first determining module is specifically configured to:
wherein k represents the heat dissipation coefficient of the heat supply equipment, T max Represents the maximum value of the water temperature, T min And (3) representing the minimum water temperature, θ representing the air temperature information, and t representing 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 heat generation amount, and c represents the specific heat capacity of the water.
Optionally, the detection module is specifically configured to:
Q loss ＝cm(T max -θ)(1-e -kt )
wherein Q is loss Representing the heat loss of the heating apparatus.
According to the embodiment of the application, the operation information, the real-time water temperature information and the air temperature information of the heat supply equipment are obtained, the total heat dissipation time of the heat supply equipment is determined according to the real-time water temperature information and the preset water temperature threshold value, the heat dissipation coefficient of the heat supply equipment is determined according to the total heat dissipation time, the water temperature threshold value and the air temperature information, then the total mass of the water in the hot water pipeline of the heat supply equipment is determined according to the heat generation amount of the preset water in the operation information, the preset water temperature maximum value, the air temperature information, the heat dissipation coefficient and the total heat dissipation time, and finally the heat loss of the heat supply equipment is determined according to the total heat capacity of the water, the water temperature maximum value, the air temperature information, the heat dissipation coefficient and the total heat dissipation time.
Drawings
FIG. 1 is a flow chart of a heat loss detection method according to an embodiment of the application;
FIG. 2 is another flow chart of a heat loss detection method according to an embodiment of the application;
FIG. 3 is a schematic diagram of a heating system according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a thermal loss detecting device according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
At present, heat supply equipment is one of urban infrastructures, and the high-quality development of the heat supply equipment is directly related to the modern construction of cities, in the heat supply equipment, when the temperature of the hot water pipeline wall of the heat supply equipment is higher than that of surrounding air, heat in the hot water pipeline is dissipated into the atmosphere through the pipeline wall surface, so that 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 heat loss, physical information of heat supply equipment, such as an inner diameter of a heat insulation pipe, an outer diameter of the heat insulation pipe, a thermal resistance of an inner wall, a thermal resistance of a steel pipe, a thermal resistance of a heat insulation layer, a thermal resistance from an outer heat insulation layer of a pipeline to surrounding air, a length of the pipeline and the like, needs to be obtained first, and then the heat loss is calculated according to the obtained physical information.
In order to solve the above problems, in an embodiment of the present application, a heat loss detection method is provided, operation information, real-time water temperature information and air temperature information of a heating device are obtained, then, according to the real-time water temperature information and a preset water temperature threshold value, a total heat dissipation time of the heating device is determined, and according to the total heat dissipation time, the water temperature threshold value and the air temperature information, a heat dissipation coefficient of the heating device is determined, then, according to a preset specific heat capacity of water, a heat generation amount, a preset water temperature maximum value, an air temperature information, a heat dissipation coefficient and a total heat dissipation time, a total mass of water in a hot water pipeline of the heating device is determined, and finally, according to the specific heat capacity of water, the total mass of water, the water temperature maximum value, the air temperature information, the heat dissipation coefficient and the total heat dissipation time, the heat loss of the heating device is determined, so that the heat loss of the heating device can be calculated without any modification of the heating device and measurement of physical information of the heating device, and the calculation difficulty in calculating is reduced.
Based on the above embodiments, referring to fig. 1, a flowchart of a heat loss detection method in an embodiment of the present application is shown, and the method is applied to a server, and specifically includes:
step 100: and acquiring the operation information, the real-time water temperature information and the air temperature information of the heating equipment.
The operation information at least comprises heat generation quantity of the heat supply equipment, the real-time water temperature information represents real-time temperature of water in a hot water pipeline of the heat supply equipment, and the air temperature information represents temperature of air at the periphery of the heat supply equipment.
In the embodiment of the application, the heat supply equipment is arranged in the heat supply system, and the heat supply system is also provided with a heat supply data acquisition device, a meteorological data acquisition device and a temperature sensor, wherein the heat supply device is used for providing heat to maintain the indoor temperature within a certain temperature range, and the heat supply data acquisition device, the meteorological data acquisition device 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 heat supply equipment.
The heat supply data acquisition equipment is used for acquiring operation information of the heat supply equipment and sending the acquired operation information to the server, the meteorological data acquisition equipment is used for acquiring the temperature of air around the heat supply system in real time, acquiring air temperature information and sending the air temperature information to the server, the temperature sensor is used for detecting real-time water temperature in a hot water pipeline of the heat supply equipment, acquiring real-time water temperature information and sending the real-time water temperature information to the server, and the server further acquires the operation information, the real-time water temperature information and the air temperature information of the heat supply equipment.
The operation information at least includes the power generation amount, the heat generation value, the equipment operation time and the heat dissipation time of the heating equipment in each hour, which is not limited in the embodiment of the application.
The real-time water temperature information is a real-time temperature of water in the hot water pipe of the heating apparatus, for example, the real-time temperature of water in the hot water pipe of the heating apparatus 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 heat supply device, for example, the air temperature information of the office building is 25 ℃, which is not limited in the embodiment of the present application.
Further, in the embodiment of the application, after the heat supply data acquisition device acquires the operation information of the heat supply device, the acquired operation information is stored in the remote monitoring device in the form of a list, and after the meteorological data acquisition device acquires the air temperature information around the heat supply device, the acquired air temperature information is stored in the remote monitoring device in the form of a list, so that the remote monitoring device 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 staff can randomly check the operation information and the air temperature information of the heat supply device and maintain the heat supply device.
Step 110: and determining the total heat dissipation time according to the real-time water temperature information and a preset water temperature threshold value, and determining the 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.
The heat dissipation total time represents the time required for the hot water pipeline of the heat supply equipment to start heat dissipation from the maximum water temperature value and reduce the heat dissipation to the minimum water temperature value, the preset water temperature threshold comprises a preset water temperature maximum value and a preset water temperature minimum value, the water temperature maximum value represents the maximum temperature value of water in the hot water pipeline of the heat supply equipment, and the water temperature minimum value represents the minimum temperature value of water in the hot water pipeline of the heat supply equipment.
In the embodiment of the application, the total heat dissipation time is determined according to the real-time water temperature information and the preset water temperature threshold value, and the method specifically comprises the following steps:
s1: if the real-time water temperature information is determined to be greater than the preset water temperature maximum value, a stop instruction is generated, the time for generating the stop instruction is recorded, and the stop instruction is sent to the operation controller, so that the operation controller controls the heat supply equipment to stop operating according to the stop instruction.
In the embodiment of the application, if the heating 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 heating equipment and sends the collected real-time water temperature information to the server, and then the server judges whether the collected real-time water temperature information is larger than a water temperature maximum value, if the real-time water temperature information is not larger than the water temperature maximum value, the heating equipment is not controlled, if the real-time water temperature information is larger than the water temperature maximum value, the real-time water temperature in a hot water pipeline of the heating equipment is determined to be larger than the water temperature maximum value, and a stop operation instruction is generated, wherein the stop instruction is used for controlling the heating equipment to stop operation by the operation controller.
The following describes the working principle of the operation controller:
the operation controller, namely the temperature controller, realizes automatic adjustment by utilizing the principles of heat expansion and cold contraction of temperature sensing fluid and incompressibility of liquid, when the control temperature is increased, the thrust generated by the expansion of the temperature sensing fluid turns down the heat medium so as to reduce the output temperature, when the control temperature is reduced, the temperature sensing fluid contracts, and the heat medium is turned on under the action of the reset device so as to improve the output temperature, thereby enabling the controlled temperature to reach and be kept in the set temperature range.
S2: and continuously monitoring the real-time water temperature information until the real-time water temperature information is 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 can control the heating equipment to start to operate according to the operation instruction.
In the embodiment of the application, after the operation controller controls the heat supply equipment to stop operating, at this time, the heat supply equipment stops operating, because the hot water pipeline of the heat supply equipment can dissipate heat, after the heat supply equipment stops operating, the water temperature in the hot water pipeline of the heat supply equipment can be reduced along with the external temperature, the real-time water temperature information in the hot water pipeline of the heat supply equipment is continuously monitored, whether the monitored real-time water temperature information is smaller than a preset water temperature minimum value is judged, if the monitored real-time water temperature information is determined to be smaller than the preset water temperature minimum value, namely, the water temperature minimum value is reduced, 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 start operating according to the operation starting instruction after receiving the operation starting instruction.
In the embodiment of the present application, the operation time of the heating device may also be set, and the heating device may be controlled according to a predetermined operation time, for example, the heating device may be controlled to operate in 8:00-12:00 a 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 the running instruction or the stopping instruction and sends the generated running instruction or stopping instruction to the running controller, so that the running controller controls the running state of the heating equipment according to the received running instruction or stopping instruction, and thus, different control opening and closing control strategies, such as immediate control, are adopted in combination with the current water temperature, namely, control is performed according to the set threshold, round control, namely, the working time of the heating equipment is set, control is performed according to the preset running time, and the like, so that the real-time water temperature in the hot water pipeline of the heating equipment can be kept in a certain temperature interval, and the normal running of the heating equipment is ensured.
S3: by determining the difference between the running time and the stopping time, the total heat dissipation time of the heating apparatus is obtained.
In the embodiment of the application, after the operation time of the heating equipment for starting operation and the stop time of stopping operation are obtained, the difference between the operation time and the stop time is determined, and the calculated difference is the total heat dissipation time of the heating equipment.
Further, in order to improve accuracy of obtaining the total heat dissipation time of the heat supply device, steps S1 to S3 are repeatedly performed a plurality of times and an average value of a plurality of total heat dissipation times is obtained, for example, steps S1 to S330 may be repeatedly performed a plurality of times to obtain 30 total heat dissipation times and the 30 total heat dissipation times are weighted and averaged to obtain an average value of 30 total heat dissipation times.
After the total heat dissipation time is determined, the heat dissipation coefficient of the heat supply equipment can be calculated according to the total heat dissipation time, the water temperature threshold and the air temperature information, and the heat dissipation coefficient of the heat supply equipment is determined according to the total heat dissipation time, the water temperature threshold and the air temperature information, and specifically comprises the following steps:
wherein k represents the heat dissipation coefficient of the heating equipment, T max Represents the maximum value of water temperature T min The minimum water temperature value is represented, θ 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, the integrated air temperature information is obtained by performing an integral calculation on the air temperature information, specifically, the weather data acquisition device is responsible for acquiring real-time air temperature information around the heating device, and sends the acquired air temperature information to the server, and then the server performs an integral calculation on the air temperature information acquired by the weather data acquisition device, so as to obtain the integrated air temperature information.
The integrated air temperature information can be expressed, for example, as:
wherein θ represents integrated air temperature information, T i Representing real-time air temperature information, t i Time is represented, and i represents time.
Step 120: and determining the total mass of water in the hot water pipeline of the heat supply equipment according to the preset specific heat capacity, heat generation amount, the preset water temperature maximum value, air temperature information, heat dissipation coefficient and total heat dissipation time of the water.
In the embodiment of the present application, the preset water temperature threshold includes a water temperature maximum value and a water temperature minimum value, so when calculating the total mass of water, determining the total mass of water in the hot water pipe of the heat supply device according to the preset specific heat capacity of water, the heat generation amount, the preset water temperature maximum value, the air temperature information, the heat dissipation information and the total heat dissipation time, and executing step 120 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, T max The preset water temperature maximum value is represented, 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 heat supply equipment according to the specific heat capacity of water, the total mass of 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 the water is obtained, the heat loss of the heat supply equipment can be determined according to the preset specific heat capacity of the water, the preset water temperature maximum value, 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 the thermodynamic formula q=c=m=δt of the heat absorbed and released by the object, but m and δt are generally difficult to obtain in the prior art.
After the two parameters of m and delta T are calculated, the heat loss of the heat supply equipment in a certain time period is obtained according to the thermodynamic of the heat absorbed and released by the object.
Specifically, in the embodiment of the present application, when step 120 is executed, the method specifically includes:
Q loss ＝cm(T max -θ)(1-e -kt )
wherein Q is loss Represents the heat loss value of the heating equipment, c represents the specific heat capacity of water, T max And (3) representing a preset water temperature maximum value, theta representing integrated air temperature information, e representing a mathematical constant, k representing a heat dissipation coefficient, and t representing total heat dissipation time, so that 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 utilizing the ideas of data mining and data analysis, and the method specifically comprises the following steps: the method comprises the steps of acquiring operation information, real-time water temperature information and air temperature information of the heat supply equipment, determining the total heat dissipation time of the heat supply equipment according to the real-time water temperature information and a preset water temperature threshold value, determining the 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, then 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 generation amount in the operation information, the water temperature maximum value, the air temperature information, the heat dissipation coefficient and the total heat dissipation time, and finally determining the heat loss of the heat supply equipment according to the specific heat capacity of water, the total mass of water, the water temperature maximum value, the air temperature information, the calculated heat dissipation coefficient and the total heat dissipation time.
Based on the above embodiments, referring to fig. 2, another flowchart of a heat loss detection method in an embodiment of the present application specifically includes:
step 200: a range of water temperature thresholds is set.
Step 210: the hot water supply to the heating apparatus is stopped.
Step 220: the heat generating value, the running time of the heat supply equipment, the total heat dissipation time and the temperature difference are obtained.
Step 230: the steps 200-220 are repeatedly executed for more than 30 times.
Step 240: and acquiring outdoor real-time air temperature information through meteorological data acquisition equipment.
Step 250: and carrying out integral calculation on the air temperature information to obtain integral air temperature information.
Wherein, the liquid crystal display device comprises a liquid crystal display device,
step 260: and calculating to obtain a heat dissipation coefficient k representing the heat dissipation capacity of the heat supply equipment.
Wherein, the liquid crystal display device comprises a liquid crystal display device,
step 270: and calculating to obtain the total mass of water in the hot water pipeline of the heat supply equipment.
Wherein, the liquid crystal display device comprises a liquid crystal display device,
step 280: by calculating Q loss ＝cm(T max -θ)(1-e -kt ) Obtaining heat loss Q loss。
According to the embodiment of the application, the heat loss of the heat supply equipment is calculated by utilizing 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 total heat dissipation time are calculated according to the operation information, the real-time water temperature information and the air temperature information, and further the heat loss of the heat supply equipment is determined according to the preset specific heat capacity of the water, the preset water temperature maximum value, the total mass of the water, the integrated air temperature information, the heat dissipation coefficient and the total heat dissipation time, so that the physical information of a heat supply equipment assembly, such as the inner diameter of a heat preservation pipe, the heat resistance of the heat preservation pipe, the inner wall, the heat resistance of a steel pipe heat preservation layer, the heat resistance of a pipeline message outer layer to the surrounding air and the like, is not required to be measured, the manpower and the construction cost are saved, other operation and maintenance cost are correspondingly reduced, and the application difficulty is reduced because the original environment is not required to be changed.
Based on the above embodiments, referring to fig. 3, a schematic structural diagram of a heating system according to 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, heating 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 list form.
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 list form.
The operation information at least comprises the power generation amount, the heat generation value, the equipment operation time and the heat dissipation time of each hour.
The temperature controller consists of a temperature sensor and an operation controller, wherein 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 a cogeneration unit to operate or stop instructions to control the operation state of the cogeneration unit, through the function, the cogeneration unit can recognize a control command issued by a control system, then different control opening and closing control strategies are adopted only by combining the current water temperature, for example, the control is performed immediately, the control is performed according to a set threshold value, the control is performed in turn, the working time of the cogeneration unit is set, the control is performed according to preset operation time, and the like.
In the embodiment of the application, the temperature controller is embedded in the original building system, so that the water temperature can be ensured to be continuously in a certain temperature range.
3. Remote monitoring system: the system is used for acquiring air temperature information acquired by the meteorological data acquisition equipment and operation information of the cogeneration unit acquired by the heat supply data acquisition equipment.
4. And (3) a server: and the heat loss of the cogeneration unit is calculated according to the operation information, the air temperature information and the real-time water temperature information.
In the embodiment of the application, the calculation of the heat loss is calculated according to a thermodynamic formula q=cmδt of the heat absorbed and released by the object, but m and δt 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 water temperature minimum value, and closing the cogeneration unit when the real-time water temperature information reaches the water temperature maximum value.
Then, the hot water supply is closed, so that the water temperature in the heating system is reduced along with the external temperature until the water temperature is reduced to the minimum threshold value, and the temperature controller ensures the automatic operation of the heating system.
The above operation 30 is repeated to obtain an average value of the total heat dissipation time and an average value of the air temperature information.
Then substituting the acquired air temperature information, total heat dissipation time and water temperature threshold value into a formulaThe heat dissipation coefficient k is obtained.
Wherein k represents a heat dissipation coefficient, which characterizes the comprehensive heat dissipation capacity of the heating system, T max Represents the maximum water temperature (water temperature when the cogeneration unit is stopped), T min The minimum water temperature (water temperature when the cogeneration unit is started) t represents the total heat dissipation time.
θ represents the integrated air temperature information,
wherein T is i Information indicating the temperature of the air outside, t i Time is represented, and i represents time.
And, because the heating system has been built substantially unchanged, k is a constant value and is obtained by weighting more than 30 samples.
Then, k is substituted into the formulaAnd obtaining the total mass m of water in the system.
Wherein Q represents heat generationThe amount, c, represents the specific heat capacity, T, of water max The maximum water temperature (water temperature when the cogeneration unit is stopped) is represented by θ, the integrated air temperature information is represented by t, and the total heat radiation time is represented by t.
Finally, according to the thermodynamic formula Q of the heat absorbed and released by the object loss ＝cmδT＝cm(T max -θ)(1-e -kt ) And obtaining the heat loss of the heating system within a certain period of time.
In this way, in the embodiment of the application, the heat loss in the system can be calculated without measuring the data of the system components, such as the physical information of parameters including 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 surrounding 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, adding the heat supply data acquisition equipment and the gas image data acquisition equipment, further the water supply quality and the temperature difference in the system are obtained, finally the heat loss in the system is obtained, in addition, the control command issued by the EMS system can be identified by the temperature control module, and the heat demand condition and the expected heat loss condition of future users can be combined.
Based on the same inventive concept, a heat loss detection device is provided in an embodiment of the present application, and the heat loss detection device may be, for example, a server in the foregoing embodiment, and the heat loss detection device may be a hardware structure, a software module, or a hardware structure plus a software module. Based on the above embodiments, referring to fig. 4, a schematic structural diagram of a thermal loss detecting device according to an embodiment of the present application specifically includes:
the obtaining module 400 is configured to obtain operation information, real-time water temperature information and air temperature information of a heating device, where the operation information at least includes heat generation amount of the heating device, the real-time water temperature information represents real-time temperature of water in a hot water pipeline of the heating device, and the air temperature information represents temperature of air around the heating device;
a first determining module 410, configured to determine a 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 characterizes a time required for a hot water pipeline of the heat supply device to dissipate heat from a maximum water temperature to a minimum water temperature;
A second determining module 420, configured to determine a total mass of water in a hot water pipe of the heating apparatus according to a preset specific heat capacity of water, the heat generation amount, a preset water temperature maximum value, the air temperature information, the heat dissipation coefficient, and the total heat dissipation time;
and a detection module 430 for determining heat loss of the heating apparatus according to the specific heat capacity of the water, the total mass of the water, the water temperature maximum value, 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 the preset water temperature threshold, the first determining module 410 is specifically configured to:
if the real-time water temperature information is determined to be greater than the preset water temperature maximum 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 heating 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 heating 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 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 value, and the air temperature information, the first determining module 410 is specifically configured to:
wherein k represents the heat dissipation coefficient of the heat supply equipment, T max Represents the maximum value of the water temperature, T min And (3) representing the minimum water temperature, θ representing the air temperature information, and t representing 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 heat generation amount, and c represents the specific heat capacity of the water.
Optionally, the detection module 430 is specifically configured to:
Q loss ＝cm(T max -θ)(1-e -kt )
wherein Q is loss Representing the heat loss of the heating apparatus.
Based on the above embodiments, referring to fig. 5, a schematic structural diagram of an electronic device according to an embodiment of the present application is shown.
Embodiments of the present application provide an electronic device that may include a processor 510 (Center Processing Unit, CPU), a memory 520, an input device 530, an output device 540, etc., where the input device 530 may include a keyboard, a mouse, a touch screen, etc., and the output device 540 may include a display device, such as a liquid crystal display (Liquid Crystal Display, LCD), a Cathode Ray Tube (CRT), etc.
Memory 520 may include Read Only Memory (ROM) and Random Access Memory (RAM) and provides processor 510 with program instructions and data stored in memory 520. In an embodiment of the present application, the memory 520 may be used to store a program of any of the heat loss detection methods of the embodiment of the present application.
Processor 510 is configured to execute any of the heat loss detection methods of the embodiments of the present application in accordance with the obtained program instructions by calling the program instructions stored in memory 520 by processor 510.
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.
It will be appreciated by those skilled in the art that 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 flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations 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 modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (6)
1. A heat loss detection method, comprising:
acquiring operation information, real-time water temperature information and air temperature information of heat supply equipment, wherein the operation information at least comprises heat generation quantity of the heat supply equipment, the real-time water temperature information represents real-time temperature of water in a hot water pipeline of the heat supply equipment, and the air temperature information represents 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 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 for a hot water pipeline of the heat supply equipment to dissipate heat from the maximum water temperature to the minimum water temperature;
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 generation amount, the preset water temperature maximum value, the air temperature information, the heat dissipation coefficient and the total heat dissipation time;
determining heat loss of the heating device according to the specific heat capacity of the water, the total mass of the water, the water temperature maximum value, the air temperature information, the heat dissipation coefficient and the total heat dissipation time;
the method for 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 specifically comprises the following steps:
wherein k represents the heat dissipation coefficient of the heat supply equipment, T max Represents the maximum value of the water temperature, T min Representing the minimum water temperature, θ represents the air temperature information, and t represents the total heat dissipation time;
Determining the total mass of water in a hot water pipeline of the heat supply device according to the preset specific heat capacity of water, the heat generation amount, the preset water temperature maximum value, the air temperature information, the heat dissipation coefficient and the total heat dissipation time, wherein the method specifically comprises the following steps of:
wherein m represents the total mass of the water, Q represents the heat generation amount, and c represents the specific heat capacity of the water;
determining heat loss of the heat supply device according to the specific heat capacity of the water, the total mass of the water, the water temperature maximum value, the air temperature information, the heat dissipation coefficient and the total heat dissipation time, specifically comprising:
Q loss ＝cm(T max -θ)(1-e -kt )
wherein Q is loss Representing the heat loss of the heating apparatus.
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 value specifically comprises:
if the real-time water temperature information is determined to be greater than the preset water temperature maximum 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 heating 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 heating 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 between the running time and the stopping time.
3. A heat loss detection device, comprising:
the system comprises an acquisition module, a control 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, wherein the operation information at least comprises heat generation quantity of the heat supply equipment, the real-time water temperature information represents real-time temperature of water in a hot water pipeline of the heat supply equipment, and the air temperature information represents 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 the 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 for a hot water pipeline of the heat supply equipment to dissipate heat from a water temperature maximum value to reduce to a water temperature minimum value;
the second determining module is used for determining the total mass of water in the hot water pipeline of the heat supply device according to the preset specific heat capacity of water, the heat generation amount, the preset water temperature maximum value, the air temperature information, the heat dissipation coefficient and the total heat dissipation time;
The detection module is used for determining heat loss of the heat supply equipment according to the specific heat capacity of the water, the total mass of the water, the water temperature maximum value, the air temperature information, the heat dissipation coefficient and the total heat dissipation time;
the first determining module is specifically configured to, when determining the heat dissipation coefficient of the heat supply device according to the total heat dissipation time, the water temperature threshold value, and the air temperature information:
wherein k represents the heat dissipation coefficient of the heat supply equipment, T max Represents the maximum value of the water temperature, T min Representing the minimum water temperature, θ represents the air temperature information, and t represents the total heat dissipation time;
the second determining module is specifically configured to, when determining the total mass of water in the hot water pipeline of the heat supply device according to a preset specific heat capacity of water, the heat generation amount, a preset water temperature maximum value, the air temperature information, the heat dissipation coefficient and the total heat dissipation time:
wherein m represents the total mass of the water, Q represents the heat generation amount, and c represents the specific heat capacity of the water;
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 water temperature maximum value, the air temperature information, the heat dissipation coefficient and the total heat dissipation time, and is specifically used for:
Q loss ＝cm(T max -θ)(1-e -kt )
Wherein Q is loss Representing the heat loss of the heating apparatus.
4. The apparatus of claim 3, 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 greater than the preset water temperature maximum 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 heating 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 heating 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 between the running time and the stopping time.
5. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the method of any of claims 1-2 when the program is executed by the processor.
6. A computer-readable storage medium having stored thereon a computer program, characterized by: the computer program implementing the steps of the method of any of claims 1-2 when executed by a processor.
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