CN114087640B - Heating system and heating control method - Google Patents
Heating system and heating control method Download PDFInfo
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- CN114087640B CN114087640B CN202111406771.7A CN202111406771A CN114087640B CN 114087640 B CN114087640 B CN 114087640B CN 202111406771 A CN202111406771 A CN 202111406771A CN 114087640 B CN114087640 B CN 114087640B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 234
- 238000000034 method Methods 0.000 title claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 370
- 238000005338 heat storage Methods 0.000 claims abstract description 44
- 238000012937 correction Methods 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 9
- 238000004590 computer program Methods 0.000 description 16
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- 230000006870 function Effects 0.000 description 6
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
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- 238000003916 acid precipitation Methods 0.000 description 1
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- 238000004364 calculation method Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
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- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000003287 optical effect Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/005—Hot-water central heating systems combined with solar energy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1045—Arrangement or mounting of control or safety devices for water heating systems for central heating the system uses a heat pump and solar energy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
- F24D3/1058—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system disposition of pipes and pipe connections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/18—Hot-water central heating systems using heat pumps
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/20—Solar thermal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
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- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Sustainable Energy (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention provides a heating system and a heating control method, in the heating system, a solar heat collector is connected with a heat storage water tank, a load side water outlet of the heat storage water tank is connected with a first water inlet of a water collector, a water outlet of the water collector is connected with a heat source water inlet of a heat exchange unit, a heat source water measuring outlet of the heat exchange unit is connected with a water inlet of a water separator, and a first water outlet of the water separator is connected with a load side water inlet of the heat storage water tank; the ground source heat pump is connected with a heat source measuring port of the ground source heat exchanger, a water inlet of the ground source heat pump is connected with a water inlet of the heat source measuring port of the ground source heat exchanger, a second water outlet of the water separator is connected with a load side water inlet of the ground source heat exchanger, a load side water outlet of the ground source heat exchanger is connected with a first port of the three-way valve, and a second port of the three-way valve is connected with a second water inlet of the water collector; and a third port of the three-way valve is connected to a load side water inlet of the heat storage water tank. The invention can improve the energy saving rate and the heating effect of the heating system.
Description
Technical Field
The invention belongs to the technical field of heating, and particularly relates to a heating system and a heating control method.
Background
With the development of science and technology, people put higher demands on the comfort of indoor heating. The conventional heating energy mainly based on fossil fuels such as coal brings environmental pollution problems such as haze, acid rain and the like to the environment, and therefore, a combined heating system using renewable energy sources such as solar energy, shallow geothermal energy and the like is widely popularized.
However, the renewable energy combined heating system in the prior art generally has only one working mode, and the operating mode cannot be changed according to actual needs, so that the energy saving rate of the system is low and the heating effect is poor.
Disclosure of Invention
In view of this, the embodiment of the invention provides a heating system and a heating control method to solve the problems of low energy saving rate and poor heating effect of a renewable energy combined heating system in the prior art.
A first aspect of an embodiment of the present invention provides a heating system, including:
the system comprises a solar heat collector, a heat storage water tank, a water collector, a heat exchange unit, a water separator, a three-way valve, a ground source heat pump and a ground source heat exchanger;
the water outlet of the solar heat collector is connected to the heat source water measuring inlet of the heat storage water tank, the water inlet of the solar heat collector is connected to the heat source water measuring inlet of the heat storage water tank, the load side water outlet of the heat storage water tank is connected to the first water inlet of the water collector, the water outlet of the water collector is connected to the heat source water measuring inlet of the heat exchange unit, the heat source water measuring inlet of the heat exchange unit is connected to the water inlet of the water separator, and the first water outlet of the water separator is connected to the load side water inlet of the heat storage water tank to form a solar heating loop; the water outlet of the ground source heat pump is connected to the heat source water measuring inlet of the ground source heat exchanger, the water inlet of the ground source heat pump is connected to the heat source water measuring outlet of the ground source heat exchanger, the second water outlet of the water separator is connected to the load side water inlet of the ground source heat exchanger, the load side water outlet of the ground source heat exchanger is connected to the first port of the three-way valve, the second port of the three-way valve is connected to the second water inlet of the water collector, and a geothermal heating loop is formed;
and a load side water inlet and outlet of the heat exchange unit is used for connecting user heating equipment, and a third port of the three-way valve is connected to a load side water inlet of the heat storage water tank.
A second aspect of the embodiment of the invention provides a heating control method that is applied to the heating system described above; the heating control method includes:
acquiring the temperature of a water outlet of a solar heat collector, the temperature of a water outlet on the load side of a heat storage water tank, the temperature of a water inlet on the load side of a ground source heat exchanger and the temperature of a water outlet on the load side;
if the temperature of the water outlet of the solar heat collector is higher than the temperature of the water outlet at the load side of the heat storage water tank and the temperature of the water outlet at the load side of the ground source heat exchanger is lower than the temperature of the water outlet at the load side of the ground source heat exchanger, controlling the heating system to operate in a solar independent heating mode;
if the temperature of the water outlet of the solar heat collector is lower than the temperature of the water outlet at the load side of the heat storage water tank and the temperature of the water outlet at the load side of the ground source heat exchanger is higher than the temperature of the water outlet at the load side of the ground source heat exchanger, controlling the heating system to operate in a geothermal independent heating mode;
if the temperature of the water outlet of the solar heat collector is higher than the temperature of the water outlet at the load side of the heat storage water tank and the temperature of the water outlet at the load side of the ground source heat exchanger is higher than the temperature of the water inlet at the load side of the ground source heat exchanger, acquiring the temperature data of the area where the heating system is located, and controlling the heating system to operate in a solar-geothermal series heating mode or a solar-geothermal parallel heating mode according to the temperature data.
Optionally, controlling the heating system to operate in a solar independent heating mode includes:
and controlling the solar thermal collector to be started, the ground source heat pump to be closed, controlling the first water outlet of the water distributor to be opened, controlling the second water outlet of the water distributor to be closed, and controlling the third port of the three-way valve to be closed, wherein the heating system operates in a solar independent heating mode at the moment.
Optionally, controlling the heating system to operate in a geothermal independent heating mode includes:
and controlling the solar thermal collector to be closed and the ground source heat pump to be opened, controlling the first water outlet of the water separator to be closed and the second water outlet of the water separator to be opened, closing the third port of the three-way valve and opening the first port and the second port of the three-way valve, and operating the heating system in a geothermal independent heating mode at the moment.
Optionally, controlling the heating system to operate in a solar-geothermal series heating mode, including:
and controlling the solar thermal collector and the ground source heat pump to be started, controlling the first water outlet and the second water outlet of the water separator to be closed, controlling the first port and the third port of the three-way valve to be opened, and controlling the second port to be closed, wherein the first port and the third port of the three-way valve to be closed, and the heating system operates in a solar-geothermal series heating mode.
Optionally, controlling the heating system to operate in a solar-geothermal parallel heating mode, including:
and controlling the solar thermal collector and the ground source heat pump to be started, controlling the first water outlet and the second water outlet of the water separator to be opened, closing the third port of the three-way valve, and opening the first port and the second port, wherein the heating system operates in a solar-geothermal parallel heating mode.
Optionally, controlling the heating system to operate in a solar-geothermal series heating mode or a solar-geothermal parallel heating mode according to the temperature data includes:
acquiring a preset operation mode reference table, wherein the operation mode reference table comprises the optimal operation mode of the heating system under different temperature intervals; the optimal operation mode is one of a solar energy-geothermal series heating mode and a solar energy-geothermal parallel heating mode;
and determining the optimal operation mode of the heating system according to the temperature data and the operation mode comparison table, and controlling the heating system to operate in the optimal operation mode.
Optionally, the heating control method further includes:
acquiring temperature prediction data of an area where the heating system is located at a future moment, and determining an optimal operation mode of the heating system at the future moment according to the temperature prediction data; the optimal operation mode is one of a solar energy-geothermal heat series connection heating mode and a solar energy-geothermal heat parallel connection heating mode;
determining advanced control time according to the length and the flow rate of the pipeline in the optimal operation mode;
and determining the switching time according to the future time and the advanced control time, and switching the heating system to the optimal operation mode at the switching time.
Optionally, the lead control time is determined according to the following formula:
H＝S/U
in the formula, H is the advanced control time, S is the length of the pipeline, and U is the flow speed.
Optionally, before obtaining the temperature prediction data of the area where the heating system is located at the future time, determining the temperature prediction data; the method of determining temperature prediction data comprises:
acquiring current actual measurement temperature data of an area where a heating system is located, current temperature display data of a meteorological network, temperature display data of the meteorological network at a future moment and a preset error correction coefficient;
according to
Determining temperature prediction data; wherein T is temperature prediction data, A is meteorological network current display data, B is meteorological network future time temperature display data, C is current actual measurement temperature data, and K (i) is an error correction coefficient corresponding to the future time i.
A third aspect of the embodiments of the present invention provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the steps of the heating control method according to the second aspect are implemented.
A fourth aspect of the embodiment of the present invention provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the heating control method according to the second aspect.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
the heating system provided by the embodiment of the invention comprises a solar heating loop and a geothermal heating loop. In a solar heating loop, a water outlet at the load side of a heat storage water tank is connected to a first water inlet of a water collector, a water outlet of the water collector is connected to a heat source water measuring inlet of a heat exchange unit, a water measuring inlet of the heat exchange unit is connected to a water inlet of a water separator, and a first water outlet of the water separator is connected to a water inlet at the load side of the heat storage water tank; in the geothermal heating loop, a second water outlet of the water separator is connected to a load side water inlet of the ground source heat exchanger, a load side water outlet of the ground source heat exchanger is connected to a first port of the three-way valve, and a second port of the three-way valve is connected to a second water inlet of the water collector; and the third port of the three-way valve is also connected to a load side water inlet of the heat storage water tank. According to the heating system provided by the embodiment of the invention, through adding the three-way valve and carrying out special structural design, the three-way valve and the water separator outlet valve can be adjusted according to the requirements under different conditions, so that the heating system operates in a solar independent heating mode, a geothermal independent heating mode, a solar-geothermal series heating mode or a solar-geothermal parallel heating mode, and the energy saving rate and the heating effect of the system are improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the embodiments or the prior art description will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings may be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a heating system according to an embodiment of the present invention;
fig. 2 is a flowchart of a heating control method according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating the determination of the operation mode lookup table according to an embodiment of the present invention;
FIG. 4 is a flow chart of mode advance switching provided by an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
Referring to fig. 1, an embodiment of the present invention provides a heating system, including:
the system comprises a solar heat collector 11, a hot water storage tank 12, a water collector 13, a heat exchange unit 14, a water separator 15, a three-way valve 16, a ground source heat pump 17 and a ground source heat exchanger 18.
A water outlet of the solar heat collector 11 is connected to a heat source water measuring inlet of the heat storage water tank 12, a water inlet of the solar heat collector 11 is connected to a heat source water measuring inlet of the heat storage water tank 12, a load side water outlet of the heat storage water tank 12 is connected to a first water inlet of the water collector 13, a water outlet of the water collector 13 is connected to a heat source water measuring inlet of the heat exchange unit 14, a heat source water measuring inlet of the heat exchange unit 14 is connected to a water inlet of the water separator 15, and a first water outlet of the water separator 15 is connected to a load side water inlet of the heat storage water tank 12, so that a solar heating loop is formed. A water outlet of the ground source heat pump 17 is connected to a heat source water measuring inlet of the ground source heat exchanger 18, a water inlet of the ground source heat pump 17 is connected to a heat source water measuring inlet of the ground source heat exchanger 18, a second water outlet of the water separator 15 is connected to a load side water inlet of the ground source heat exchanger 18, a load side water outlet of the ground source heat exchanger 18 is connected to a first port of the three-way valve 16, and a second port of the three-way valve 16 is connected to a second water inlet of the water collector 13, so that a geothermal heating loop is formed. The load side water inlet and outlet of the heat exchanger unit 14 is used for connecting with a user heating device 20, and the third port of the three-way valve 16 is connected to the load side water inlet of the hot water storage tank 12.
In the embodiment of the present invention, the solar heat collection is to heat water by absorbing heat of solar energy through the solar heat collector 11. The ground source heat pump is used for taking out heat in deep soil through a buried pipe, namely, the temperature of the solution is raised through the heat exchange between the ethylene glycol solution and the soil through the circulating flow of the ethylene glycol solution in the buried pipe.
The heating system can work in four modes:
(1) The solar heat collector 11 is opened, the ground source heat pump 17 is closed, the first water outlet of the water separator 15 is opened, the second water outlet is closed, and the third port of the three-way valve 16 is closed. At this time, the water in the hot water storage tank 12 is heated by the solar heat collector 11, is provided to the user heating equipment 20 through the water collector 13 and the heat exchanger unit 14, and then flows back to the hot water storage tank 12 through the first water outlet of the water separator 15, and the heating system operates in the solar independent heating mode.
(2) The solar heat collector 11 is closed, the ground source heat pump 17 is opened, the first water outlet of the water separator 15 is closed, the second water outlet of the water separator is opened, and the third port of the three-way valve 16 is closed, and the first port and the second port of the three-way valve are opened. At this time, the ground source heat exchanger 18 heats the water, and the heated water is provided to the user heating equipment 20 through the water collector 13 and the heat exchanger unit 14, and then flows back to the ground source heat exchanger 18 through the second water outlet of the water separator 15, and the heating system operates in the geothermal independent heating mode.
(3) The solar thermal collector 11 and the ground source heat pump 17 are simultaneously opened, the first water outlet and the second water outlet of the water separator 15 are closed, and the first port and the third port of the three-way valve 16 are opened and the second port is closed. At this time, the ground source heat exchanger 18 heats water and then flows into the hot water storage tank 12, the water in the hot water storage tank 12 is heated by the solar heat collector 11 and then is provided to the user heating equipment 20 through the water collector 13 and the heat exchanger unit 14, and then flows back to the ground source heat exchanger 18 through the second water outlet of the water separator 15, and the heating system operates in a solar-geothermal series heating mode.
(4) The solar thermal collector 11 and the ground source heat pump 17 are simultaneously opened, the first water outlet and the second water outlet of the water separator 15 are opened, the third port of the three-way valve 16 is closed, and the first port and the second port are opened. At this time, the ground source heat exchanger 18 heats water and then flows into the water collector 13, the water in the hot water storage tank 12 is heated by the solar heat collector 11 and then also flows into the water collector 13, the water in the water collector 13 is provided to the user heating equipment 20 through the heat exchanger unit 14, and then flows back to the hot water storage tank 12 and the ground source heat exchanger 18 through the water separator 15, and the heating system operates in a solar energy-geothermal heat parallel heating mode.
It can be seen that the heating system of the embodiment of the invention comprises a solar heating loop and a geothermal heating loop. In a solar heating loop, a water outlet at the load side of a heat storage water tank is connected to a first water inlet of a water collector, a water outlet of the water collector is connected to a heat source water measuring inlet of a heat exchange unit, a water measuring inlet of the heat exchange unit is connected to a water inlet of a water separator, and a first water outlet of the water separator is connected to a water inlet at the load side of the heat storage water tank; in the geothermal heating loop, a second water outlet of the water separator is connected to a load side water inlet of the ground source heat exchanger, a load side water outlet of the ground source heat exchanger is connected to a first port of the three-way valve, and a second port of the three-way valve is connected to a second water inlet of the water collector; and the third port of the three-way valve is also connected to a load side water inlet of the heat storage water tank. According to the heating system provided by the embodiment of the invention, through adding the three-way valve and carrying out special structural design, the three-way valve and the water separator outlet valve can be adjusted according to the requirements under different conditions, so that the heating system operates in a solar independent heating mode, a geothermal independent heating mode, a solar-geothermal series heating mode or a solar-geothermal parallel heating mode, and the energy saving rate and the heating effect of the system are improved.
Referring to fig. 2, a heating control method is further provided according to an embodiment of the present invention, and the heating control method is applied to the heating system described above. The heating control method includes:
step S101, acquiring the water outlet temperature of the solar heat collector, the load side water outlet temperature of the heat storage water tank, the load side water inlet temperature of the ground source heat exchanger and the load side water outlet temperature.
In the embodiment of the present invention, temperature sensors may be disposed at the water outlet of the solar thermal collector 11, the load side water outlet of the thermal storage water tank 12, and the load side water inlet and the load side water outlet of the ground source heat exchanger 17, so as to acquire temperature data of each monitoring point.
Step S102, determining the operation mode of the heating system:
and if the temperature of the water outlet of the solar heat collector is higher than the temperature of the water outlet on the load side of the heat storage water tank and the temperature of the water outlet on the load side of the ground source heat exchanger is lower than the temperature of the water outlet on the load side of the ground source heat exchanger, controlling the heating system to operate in a solar independent heating mode.
And if the temperature of the water outlet of the solar heat collector is lower than the temperature of the water outlet at the load side of the heat storage water tank and the temperature of the water outlet at the load side of the ground source heat exchanger is higher than the temperature of the water outlet at the load side of the ground source heat exchanger, controlling the heating system to operate in a geothermal independent heating mode.
If the temperature of the water outlet of the solar heat collector is higher than the temperature of the water outlet at the load side of the heat storage water tank and the temperature of the water outlet at the load side of the ground source heat exchanger is higher than the temperature of the water inlet at the load side of the ground source heat exchanger, acquiring the temperature data of the area where the heating system is located, and controlling the heating system to operate in a solar-geothermal series heating mode or a solar-geothermal parallel heating mode according to the temperature data.
In the embodiment of the present invention, if the temperature of the water outlet of the solar heat collector 11 is higher than the temperature of the water outlet on the load side of the hot water storage tank 12, and the temperature of the water outlet on the load side of the ground source heat exchanger 18 is lower than the temperature of the water inlet on the load side, it indicates that the solar energy is sufficient and the geothermal energy is insufficient, and the energy saving rate and the heating effect of the system are improved by controlling the heating system to operate in the solar independent heating mode. If the temperature of the water outlet of the solar heat collector 11 is lower than the temperature of the water outlet at the load side of the heat storage water tank 12 and the temperature of the water outlet at the load side of the ground source heat exchanger 18 is higher than the temperature of the water inlet at the load side, it indicates that the geothermal energy is sufficient and the solar energy is insufficient, and the energy saving rate and the heating effect of the system are improved by controlling the heating system to operate in a geothermal independent heating mode. If the temperature of the water outlet of the solar thermal collector 11 is higher than the temperature of the water outlet on the load side of the heat storage water tank 12 and the temperature of the water outlet on the load side of the ground source heat exchanger 18 is higher than the temperature of the water inlet on the load side of the ground source heat exchanger, it indicates that both solar energy and geothermal energy are sufficient, so that combined heating can be performed, and the system is selected to work in a series mode or a parallel mode according to the temperature data of the area where the heating system is located, so that the energy saving rate and the heating effect of the system are improved.
Optionally, the controlling the heating system to operate in the solar independent heating mode in step S102 includes:
the solar thermal collector 11 is controlled to be opened, the ground source heat pump 17 is controlled to be closed, the first water outlet of the water separator 15 is controlled to be opened, the second water outlet of the water separator 15 is controlled to be closed (the opening and closing of the switches 21 and 22 of the water outlets) and the third port of the three-way valve 16 is controlled to be closed, and at the moment, the heating system operates in a solar independent heating mode.
Optionally, the controlling the heating system to operate in the geothermal independent heating mode in step S102 includes:
and controlling the solar thermal collector 11 to be closed, the ground source heat pump 17 to be opened, controlling the first water outlet of the water separator 15 to be closed, controlling the second water outlet of the water separator 15 to be opened, closing the third port of the three-way valve 16, and opening the first port and the second port of the three-way valve, wherein the heating system operates in a geothermal independent heating mode at the moment.
Optionally, the controlling the heating system in step S102 to operate in a solar-geothermal series heating mode or a solar-geothermal parallel heating mode includes:
and controlling the solar thermal collector 11 and the ground source heat pump 17 to be opened, controlling the first water outlet of the water separator 15 to be closed, controlling the second water outlet of the water separator 15 to be opened, controlling the first port and the third port of the three-way valve 16 to be opened, and controlling the second port of the three-way valve to be closed, wherein the heating system operates in a solar-geothermal series heating mode.
Or, the solar thermal collector 11 and the ground source heat pump 17 are controlled to be opened, the first water outlet and the second water outlet of the water separator 15 are controlled to be opened, the third port of the three-way valve 16 is closed, and the first port and the second port are opened, and at this time, the heating system operates in a solar-geothermal parallel heating mode.
Optionally, the step S102 of controlling the heating system to operate in a solar-geothermal series heating mode or a solar-geothermal parallel heating mode according to the temperature data includes:
acquiring a preset operation mode reference table, wherein the operation mode reference table comprises the optimal operation mode of the heating system under different temperature intervals; the optimal operation mode is one of a solar energy-geothermal heat series connection heating mode and a solar energy-geothermal heat parallel connection heating mode;
and determining the optimal operation mode of the heating system according to the temperature data and the operation mode comparison table, and controlling the heating system to operate in the optimal operation mode.
In the embodiment of the present invention, as shown in fig. 3, a trial operation may be performed after the heating system is built, a user may set an operation time by himself (time should not be too short), then the system may set a time for installing and operating the series mode and the parallel mode, respectively, the two modes record unit power consumption, flow rate and indoor temperature difference of the system under different outdoor temperature conditions, respectively, and then cop (an evaluation index of power consumption energy saving rate) is calculated. And finally, comparing the cop of the two operation modes in each outdoor temperature interval, and selecting the operation mode with higher cop in the same temperature interval to obtain the optimal operation mode of the heating system corresponding to different temperature intervals. And determining the optimal operation mode of the heating system by judging the section where the actual temperature is located.
Optionally, referring to fig. 4, the heating control method further includes:
acquiring temperature prediction data of an area where the heating system is located at a future moment, and determining an optimal operation mode of the heating system at the future moment according to the temperature prediction data; the optimal operation mode is one of a solar energy-geothermal series heating mode and a solar energy-geothermal parallel heating mode;
determining advanced control time according to the length and the flow rate of the pipeline in the optimal operation mode;
and determining the switching time according to the future time and the advanced control time, and switching the heating system to the optimal operation mode at the switching time.
Optionally, the lead control time is determined according to the following formula:
H＝S/U
in the formula, H is the advanced control time, S is the length of the pipeline, and U is the flow speed.
In the embodiment of the invention, the advanced control time is determined by acquiring the temperature prediction data of the area where the heating system is located at the future time and the pipeline length and the flow rate in the optimal operation mode in consideration of the fact that the switching of the heating system needs a certain time to be completed, so that advanced control of the system, namely advanced switching adjustment of the operation mode of the system is realized, the energy saving rate is further improved, and the heating effect is ensured.
Optionally, before obtaining the predicted temperature data of the area where the heating system is located at the future time, determining the predicted temperature data is further included. The method of determining temperature prediction data comprises:
acquiring current measured temperature data of an area where a heating system is located, current temperature display data of a meteorological network, temperature display data of the meteorological network at a future moment and a preset error correction coefficient;
according to
Determining temperature prediction data; wherein T is temperature prediction data, A is meteorological network current display data, B is meteorological network future time temperature display data, C is current actual measurement temperature data, and K (i) is an error correction coefficient corresponding to the future time i.
In the embodiment of the present invention, the error correction coefficient may be obtained by pre-calculation, and the specific method is as follows:
the system is tried for a period of time (a user can set the value of the operation time S), the current temperature display data A of the meteorological network, the temperature data B of the next moment of the meteorological network, the actually measured temperature data C of the temperature instrument near the local building and the temperature D of the temperature instrument near the local building at the next moment are collected at the period of time, and then the error correction coefficient K (i) corresponding to each moment in a day is calculated according to the following formula:
in addition, in the embodiment of the present invention, if the temperature of the water outlet of the solar thermal collector is lower than the temperature of the water outlet on the load side of the thermal storage water tank, and the temperature of the water outlet on the load side of the ground source heat exchanger is lower than the temperature of the water inlet on the load side of the ground source heat exchanger, the solar thermal collector 11 and the ground source heat pump 17 may be closed, so as to control the heating system to stop operating.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by functions and internal logic of the process, and should not limit the implementation process of the embodiments of the present invention in any way.
Fig. 5 is a schematic diagram of an electronic device 50 according to an embodiment of the present invention. As shown in fig. 5, the electronic apparatus 50 of this embodiment includes: a processor 51, a memory 52 and a computer program 53, such as a heating control program, stored in the memory 52 and operable on the processor 51. The processor 51 implements the steps in the above-described respective heating control method embodiments, for example, steps S101 to S102 shown in fig. 2, when executing the computer program 53. Illustratively, the computer program 53 may be divided into one or more modules/units, which are stored in the memory 52 and executed by the processor 51 to carry out the invention. One or more of the modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution of the computer program 53 in the electronic device 50. For example, the computer program 53 may be divided into an acquisition module and a switching module (module in the virtual device), and the specific functions of the modules are as follows:
the acquisition module is used for acquiring the water outlet temperature of the solar heat collector, the load side water outlet temperature of the heat storage water tank, the load side water inlet temperature of the ground source heat exchanger and the load side water outlet temperature.
The switching module is used for controlling the heating system to operate in a solar independent heating mode if the temperature of the water outlet of the solar heat collector is higher than the temperature of the water outlet of the load side of the heat storage water tank and the temperature of the water outlet of the load side of the ground source heat exchanger is lower than the temperature of the water inlet of the load side of the ground source heat exchanger; if the temperature of the water outlet of the solar heat collector is lower than the temperature of the water outlet at the load side of the heat storage water tank and the temperature of the water outlet at the load side of the ground source heat exchanger is higher than the temperature of the water outlet at the load side of the ground source heat exchanger, controlling the heating system to operate in a geothermal independent heating mode; if the temperature of the water outlet of the solar heat collector is higher than the temperature of the water outlet of the load side of the heat storage water tank and the temperature of the water outlet of the load side of the ground source heat exchanger is higher than the temperature of the water inlet of the load side of the ground source heat exchanger, acquiring the temperature data of the area where the heating system is located, and controlling the heating system to operate in a solar-geothermal series heating mode or a solar-geothermal parallel heating mode according to the temperature data.
The electronic device 50 may be a computing device such as a desktop computer, a notebook, a palm top computer, and a cloud server. The electronic device 50 may include, but is not limited to, a processor 51, a memory 52. Those skilled in the art will appreciate that fig. 5 is merely an example of an electronic device 50 and does not constitute a limitation of electronic device 50 and may include more or fewer components than shown, or combine certain components, or different components, e.g., electronic device 50 may also include input-output devices, network access devices, buses, etc.
The Processor 51 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The storage 52 may be an internal storage unit of the electronic device 50, such as a hard disk or a memory of the electronic device 50. The memory 52 may also be an external storage device of the electronic device 50, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like provided on the electronic device 50. Further, the memory 52 may also include both internal storage units of the electronic device 50 and external storage devices. The memory 52 is used for storing computer programs and other programs and data required by the electronic device 50. The memory 52 may also be used to temporarily store data that has been output or is to be output.
It should be clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional units and modules is only used for illustration, and in practical applications, the above function distribution may be performed by different functional units and modules as needed, that is, the internal structure of the device is divided into different functional units or modules, so as to perform all or part of the above described functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. For the specific working processes of the units and modules in the system, reference may be made to the corresponding processes in the foregoing method embodiments, which are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the technical solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/electronic device and method may be implemented in other ways. For example, the above-described apparatus/electronic device embodiments are merely illustrative, and for example, a module or a unit may be divided into only one logic function, and may be implemented in other ways, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit may be implemented in the form of hardware, or may also be implemented in the form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow in the method according to the embodiments of the present invention may also be implemented by a computer program instructing related hardware, and the computer program may be stored in a computer readable storage medium, and when executed by a processor, the computer program may implement the steps of the above-described embodiments of the method. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, recording medium, U.S. disk, removable hard disk, magnetic disk, optical disk, computer Memory, read-Only Memory (ROM), random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution media, and the like. It should be noted that the computer readable medium may contain other components which may be suitably increased or decreased as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, in accordance with legislation and patent practice, the computer readable medium does not include electrical carrier signals and telecommunications signals.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (5)
1. A heating control method, characterized in that the heating control method is applied to a heating system; the heating system includes: the system comprises a solar heat collector, a heat storage water tank, a water collector, a heat exchange unit, a water separator, a three-way valve, a ground source heat pump and a ground source heat exchanger; a water outlet of the solar heat collector is connected to a heat source water measuring inlet of the heat storage water tank, a water inlet of the solar heat collector is connected to a heat source water measuring inlet of the heat storage water tank, a load side water outlet of the heat storage water tank is connected to a first water inlet of the water collector, a water outlet of the water collector is connected to a heat source water measuring inlet of the heat exchange unit, a heat source water measuring inlet of the heat exchange unit is connected to a water inlet of the water distributor, and a first water outlet of the water distributor is connected to a load side water inlet of the heat storage water tank to form a solar heating loop; a water outlet of the ground source heat pump is connected to a heat source water measuring inlet of the ground source heat exchanger, a water inlet of the ground source heat pump is connected to a heat source water measuring inlet of the ground source heat exchanger, a second water outlet of the water separator is connected to a load side water inlet of the ground source heat exchanger, a load side water outlet of the ground source heat exchanger is connected to a first port of the three-way valve, and a second port of the three-way valve is connected to a second water inlet of the water collector to form a geothermal heating loop; the load side water inlet and the load side water outlet of the heat exchange unit are used for being connected with user heating equipment, and the third port of the three-way valve is connected to the load side water inlet of the heat storage water tank;
the heating control method includes:
acquiring the temperature of a water outlet of the solar heat collector, the temperature of a water outlet on the load side of the heat storage water tank, the temperature of a water inlet on the load side of the ground source heat exchanger and the temperature of a water outlet on the load side of the ground source heat exchanger;
if the temperature of the water outlet of the solar heat collector is higher than the temperature of the water outlet of the load side of the heat storage water tank, and the temperature of the water outlet of the load side of the ground source heat exchanger is lower than the temperature of the water outlet of the load side of the ground source heat exchanger, controlling the heating system to operate in a solar independent heating mode;
if the temperature of the water outlet of the solar heat collector is lower than the temperature of the water outlet at the load side of the heat storage water tank, and the temperature of the water outlet at the load side of the ground source heat exchanger is higher than the temperature of the water outlet at the load side of the ground source heat exchanger, controlling the heating system to operate in a geothermal independent heating mode;
if the temperature of the water outlet of the solar heat collector is higher than the temperature of the water outlet at the load side of the heat storage water tank and the temperature of the water outlet at the load side of the ground source heat exchanger is higher than the temperature of the water inlet at the load side of the ground source heat exchanger, acquiring temperature data of the area where the heating system is located, and controlling the heating system to operate in a solar-geothermal series heating mode or a solar-geothermal parallel heating mode according to the temperature data;
controlling the heating system to operate in a solar independent heating mode, comprising:
controlling the solar thermal collector to be started, the ground source heat pump to be closed, controlling a first water outlet of the water separator to be opened, controlling a second water outlet of the water separator to be closed, and controlling a third port of the three-way valve to be closed, wherein the heating system operates in a solar independent heating mode;
controlling the heating system to operate in a geothermal independent heating mode, comprising:
controlling the solar heat collector to be closed and the ground source heat pump to be opened, controlling the first water outlet of the water separator to be closed and the second water outlet of the water separator to be opened, closing the third port of the three-way valve, and opening the first port and the second port of the three-way valve, wherein the heating system operates in a geothermal independent heating mode at the moment;
controlling the heating system to operate in a solar-geothermal series heating mode, comprising:
controlling the solar thermal collector and the ground source heat pump to be started, controlling a first water outlet and a second water outlet of the water separator to be closed and opened, and controlling a first port and a third port of the three-way valve to be opened and a second port to be closed, wherein the heating system operates in a solar-geothermal series heating mode;
controlling the heating system to operate in a solar-geothermal parallel heating mode, comprising:
and controlling the solar thermal collector and the ground source heat pump to be started, controlling the first water outlet and the second water outlet of the water separator to be opened, closing the third port of the three-way valve, and opening the first port and the second port, wherein the heating system operates in a solar-geothermal parallel heating mode.
2. The heating control method according to claim 1, wherein controlling the heating system to operate in a solar-geothermal series heating mode or a solar-geothermal parallel heating mode according to the temperature data comprises:
acquiring a preset operation mode reference table, wherein the operation mode reference table comprises the optimal operation mode of the heating system under different temperature intervals; the optimal operation mode is one of a solar energy-geothermal heat series connection heating mode and a solar energy-geothermal heat parallel connection heating mode;
and determining an optimal operation mode of the heating system according to the temperature data and the operation mode comparison table, and controlling the heating system to operate in the optimal operation mode.
3. The heating control method according to claim 1, characterized by further comprising:
acquiring temperature prediction data of an area where the heating system is located at a future moment, and determining an optimal operation mode of the heating system at the future moment according to the temperature prediction data; the optimal operation mode is one of a solar energy-geothermal heat series connection heating mode and a solar energy-geothermal heat parallel connection heating mode;
determining advanced control time according to the length and the flow rate of the pipeline in the optimal operation mode;
and determining a switching time according to the future time and the advanced control time, and switching the heating system to the optimal operation mode at the switching time.
4. The heating control method according to claim 3, characterized in that the advanced control time is determined according to the following formula:
in the formula (I), the compound is shown in the specification,Hin order to advance the control time,Sin order to be the length of the pipeline,Uis the flow rate.
5. The heating control method according to claim 3, further comprising, before obtaining temperature prediction data for an area in which the heating system is located at a future time, determining the temperature prediction data;
the method of determining the temperature prediction data comprises:
acquiring current measured temperature data of an area where the heating system is located, current temperature display data of a meteorological network, future time temperature display data of the meteorological network and a preset error correction coefficient;
according to
Determining the temperature prediction data; wherein T is temperature prediction data, A is current display data of the meteorological network, B is temperature display data of the meteorological network at the future moment, C is current measured temperature data,
for a future momentiThe corresponding error correction coefficient.
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