CN111750421A - Control system based on clean energy heating - Google Patents
Control system based on clean energy heating Download PDFInfo
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- CN111750421A CN111750421A CN202010432488.0A CN202010432488A CN111750421A CN 111750421 A CN111750421 A CN 111750421A CN 202010432488 A CN202010432488 A CN 202010432488A CN 111750421 A CN111750421 A CN 111750421A
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- main controller
- temperature data
- temperature
- electromagnetic valve
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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
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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
- F24D15/00—Other domestic- or space-heating systems
- F24D15/02—Other domestic- or space-heating systems consisting of self-contained heating units, e.g. storage heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
- F24S20/40—Solar heat collectors combined with other heat sources, e.g. using electrical heating or heat from ambient air
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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
- F24D2200/00—Heat sources or energy sources
- F24D2200/32—Heat sources or energy sources involving multiple heat sources in combination or as alternative heat sources
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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
- F24D2220/00—Components of central heating installations excluding heat sources
- F24D2220/04—Sensors
- F24D2220/042—Temperature sensors
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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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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
Abstract
The invention discloses a control system based on clean energy heating, and relates to the technical field of clean energy heating control; the solar biomass heat collection system comprises a solar heat collector, a heat collection water tank, a biomass furnace, an indoor radiator, a first pump and a second pump, wherein the solar heat collector, the heat collection water tank and the first pump are connected in series to form a first loop, and the heat collection water tank, the second pump, the biomass furnace and the indoor radiator are connected in series to form a second loop; the solar energy heating system realizes high energy heating efficiency through the solar heat collector, the heat collection water tank, the biomass furnace, the indoor radiator, the first pump, the second pump and the like.
Description
Technical Field
The invention relates to the technical field of clean energy heating control, in particular to a control system based on clean energy heating.
Background
The clean heating engineering in rural areas improves the living environment and improves the living standard of people. The heat pump heating is a commonly adopted method, and has the advantages of high heating efficiency, relatively low cost and the like, but after the natural temperature exceeds the operating temperature of the machine, the condition of no heating can occur particularly at the extremely low temperature of minus 20 ℃ in rural areas, in addition, the income in the rural areas is relatively low, and the expenditure on electric charges is difficult to bear.
The gas heating is also an effective heating method, but the gas source is short, the requirement cannot be met, in addition, the price is high and is difficult to bear, and potential safety hazards exist in the operation of equipment.
The current rural areas in the north are clean and warm, and generally face the practical problems of high early investment and high operating cost.
The first is a technical route mainly using electricity to replace coal and gas to replace coal, the investment in the early stage is huge, the cost of electricity charge is high in operation, and the sustainability is not strong.
And secondly, the input utilization rate of the power grid facilities is low, and the loss cost and the operation and maintenance cost born by enterprises are higher.
Thirdly, the solar energy carries out photoelectric conversion firstly and then carries out electric-heat conversion, and the efficiency of the whole energy system is not high.
Fourthly, the utilization efficiency of the whole energy system with simple electrothermal conversion is not high.
Problems with the prior art and considerations:
how to solve the lower technical problem of energy heating efficiency.
Disclosure of Invention
The invention aims to provide a control system based on clean energy heating, which realizes higher energy heating efficiency through a solar heat collector, a heat collection water tank, a biomass furnace, an indoor radiator, a first pump, a second pump and the like.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a control system based on clean energy heating comprises a solar thermal collector, a heat collecting water tank, a biomass furnace, an indoor radiator, a first pump and a second pump, wherein the solar thermal collector, the heat collecting water tank and the first pump are connected in series to form a first loop, and the heat collecting water tank, the second pump, the biomass furnace and the indoor radiator are connected in series to form a second loop.
The further technical scheme is as follows: a first outlet of the heat collection water tank is connected and communicated with a first inlet of the heat collection water tank through a pipeline sequentially through a first pump and a solar heat collector; and a second outlet of the heat collection water tank is connected and communicated with a second inlet of the heat collection water tank through a second pump, the biomass furnace and an indoor radiator in sequence through pipelines.
The further technical scheme is as follows: the solar heat collector comprises a solar heat collector and is characterized by further comprising a controller, a first temperature measuring instrument arranged in the solar heat collector, a third temperature measuring instrument arranged in the solar heat collector and a first electromagnetic valve, wherein the first loop further comprises a check valve, a first outlet of the solar heat collector sequentially passes through a first pump, the check valve, an inlet of the solar heat collector and an outlet of the solar heat collector through pipelines to be communicated to a first inlet of the solar heat collector and form a first loop, a first outlet of the solar heat collector is communicated to an inlet of the solar heat collector through the first electromagnetic valve through pipelines, the controller is a main controller, the first temperature measuring instrument is connected with the main controller and is in one-way communication, the third temperature measuring instrument is connected with the main controller and is in one-way communication, and a control end of the first pump is connected with a control end of the first electromagnetic valve respectively.
The further technical scheme is as follows: the heating system also comprises a first heating module, a second heating module and a third heating module, wherein the first heating module is used for enabling a first temperature measuring instrument to acquire temperature data of water temperature in the solar heat collector and send the temperature data to a main controller, the main controller receives the temperature data sent by the first temperature measuring instrument and generates first measuring point temperature data, a third temperature measuring instrument acquires the temperature data of the water temperature in the heat collecting water tank and sends the temperature data to the main controller, the main controller receives the temperature data sent by the third temperature measuring instrument and generates third measuring point temperature data, when the first measuring point temperature data is larger than or equal to the third measuring point temperature data, the main controller controls a first electromagnetic valve to be closed, and the main controller; when the temperature data of the first measuring point is less than the temperature data of the third measuring point, the main controller controls the first pump to stop running, and the main controller controls the first electromagnetic valve to open.
The further technical scheme is as follows: the second outlet of the heat collection water tank sequentially passes through the second electromagnetic valve, the second pump, the biomass furnace, the indoor radiator and the fourth electromagnetic valve through pipelines to be connected and conducted to the second inlet of the heat collection water tank and form a second loop; one end of the third electromagnetic valve is connected to the joint of the second electromagnetic valve and the second pump, the other end of the third electromagnetic valve is connected to the joint of the fourth electromagnetic valve and the radiator, and the third electromagnetic valve, the second pump, the biomass furnace and the radiator which are connected in series form a third loop; and the control end of the main controller is respectively connected with the control end of the second pump, the control end of the biomass furnace, the control end of the second electromagnetic valve, the control end of the third electromagnetic valve and the control end of the fourth electromagnetic valve.
The further technical scheme is as follows: the second heating module is used for enabling a third temperature measuring instrument to obtain temperature data of water temperature in the heat collecting water tank and send the temperature data to the main controller, the main controller receives the temperature data sent by the third temperature measuring instrument and generates third measuring point temperature data, when the third measuring point temperature data is larger than a temperature threshold value, the main controller controls the biomass furnace to stop heating, the main controller controls the third electromagnetic valve to be closed, the main controller controls the second electromagnetic valve and the fourth electromagnetic valve to be opened, and the main controller controls the second pump to be started; when the temperature data of the third measuring point is less than or equal to the temperature threshold value, the main controller controls the biomass furnace to heat, the main controller controls the third electromagnetic valve to be opened, the main controller controls the second electromagnetic valve and the fourth electromagnetic valve to be closed, and the main controller controls the second pump to be started.
The further technical scheme is as follows: the temperature threshold is 40 ℃.
The further technical scheme is as follows: the biomass furnace further comprises a tenth temperature measuring instrument arranged in a chamber on one side of the radiator, and the tenth temperature measuring instrument is connected with the controller of the biomass furnace and is in one-way communication with the controller.
The further technical scheme is as follows: the solar energy hot air device comprises a hot air door arranged at one end of a wall body at one indoor side, a cold air door arranged at the other end of the wall body, a heat insulation and light transmission film arranged at the outer side of the wall body and a fan arranged on the heat insulation and light transmission film, the heat-insulating light-transmitting film and the wall body form a heat collecting cavity, the heat collecting cavity is communicated with the outside through a fan, the heat collecting cavity is communicated with the inside through a hot air door and a cold air door respectively, the twelfth temperature measuring instrument is positioned inside the heat collecting cavity, the eleventh temperature measuring instrument is positioned at one side of the outdoor heat-insulating light-transmitting film, the tenth temperature measuring instrument, the eleventh temperature measuring instrument and the twelfth temperature measuring instrument are respectively connected with the main controller and are in one-way communication, and the control end of the main controller is respectively connected with the control end of the hot air door, the control end of the cold air door and the control end of the fan.
The further technical scheme is as follows: the solar hot air device and the fourth heating module form a solar hot air subsystem, the fourth heating module is used for the tenth temperature measuring instrument to acquire indoor temperature data and send the indoor temperature data to the main controller, the main controller receives the temperature data sent by the tenth temperature measuring instrument and generates tenth measuring point temperature data, the eleventh temperature measuring instrument acquires outdoor temperature data and sends the outdoor temperature data to the main controller, the main controller receives the temperature data sent by the eleventh temperature measuring instrument and generates eleventh measuring point temperature data, when the eleventh measuring point temperature data is larger than the tenth measuring point temperature data, the main controller controls the hot air door to be closed, and the main controller controls the cold air door and the fan to be opened; the twelfth temperature measuring instrument acquires temperature data of the heat collecting cavity and sends the temperature data to the main controller, the main controller receives the temperature data sent by the twelfth temperature measuring instrument and generates twelfth measuring point temperature data, when the eleventh measuring point temperature data is smaller than the tenth measuring point temperature data and smaller than the twelfth measuring point temperature data, the main controller controls the hot air door and the cold air door to be opened, and the main controller controls the fan to be closed; and when the temperature data of the twelfth measuring point is less than the temperature data of the tenth measuring point, the main controller controls the hot air door and the cold air door to be closed.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
a control system based on clean energy heating comprises a solar thermal collector, a heat collecting water tank, a biomass furnace, an indoor radiator, a first pump and a second pump, wherein the solar thermal collector, the heat collecting water tank and the first pump are connected in series to form a first loop, and the heat collecting water tank, the second pump, the biomass furnace and the indoor radiator are connected in series to form a second loop. The solar energy heating system realizes high energy heating efficiency through the solar heat collector, the heat collection water tank, the biomass furnace, the indoor radiator, the first pump, the second pump and the like.
See detailed description of the preferred embodiments.
Drawings
FIG. 1 is a functional block diagram of the present invention;
FIG. 2 is a piping layout of the present invention;
FIG. 3 is a distribution diagram of a solar thermal wind plant according to the present invention;
fig. 4 is a block diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways than those described herein, and it will be apparent to those of ordinary skill in the art that the present application is not limited to the specific embodiments disclosed below.
As shown in FIG. 1, the invention discloses a control system based on clean energy heating, which comprises a main controller, a solar heat collector, a heat collecting water tank, a biomass furnace, an indoor radiator, a solar hot air device, a first pump, a second pump, first to fourth electromagnetic valves, a check valve, a first temperature measuring instrument, a third temperature measuring instrument, a tenth temperature measuring instrument, an eleventh temperature measuring instrument, a twelfth temperature measuring instrument, a first heating module, a second heating module and a fourth heating module, wherein the solar hot air device comprises a hot air door embedded and fixed at one end of a wall body at one side of the indoor, a cold air door at the other end of the wall body, a heat insulation light-transmitting film fixed at the outer side of the wall body and a fan embedded and fixed on the heat insulation light-transmitting film, the heat insulation light-transmitting film and the wall body form a heat collecting cavity, and the heat collecting cavity is communicated, the heat collection cavity is communicated with the indoor space through a hot air door and a cold air door respectively, and the solar hot air device and the fourth heating module form a solar hot air subsystem.
The first outlet of the heat collection water tank sequentially passes through the first pump, the check valve, the inlet of the solar heat collector and the outlet of the solar heat collector through pipelines to be connected and conducted to the first inlet of the heat collection water tank and form a first loop, and the first outlet of the heat collection water tank is connected and conducted to the inlet of the solar heat collector through the first electromagnetic valve through the pipelines.
A second outlet of the heat collection water tank is connected and communicated with a second inlet of the heat collection water tank through a second electromagnetic valve, a second pump, the biomass furnace, an indoor radiator and a fourth electromagnetic valve in sequence through pipelines to form a second loop; one end of the third electromagnetic valve is connected to the joint of the second electromagnetic valve and the second pump, the other end of the third electromagnetic valve is connected to the joint of the fourth electromagnetic valve and the radiator, and the third electromagnetic valve, the second pump, the biomass furnace and the radiator which are connected in series form a third loop.
The control end of the main controller is connected with the control end of the first pump, the control end of the main controller is connected with the control end of the second pump, the control end of the main controller is connected with the control end of the first electromagnetic valve, the control end of the main controller is connected with the control end of the second electromagnetic valve, the control end of the main controller is connected with the control end of the third electromagnetic valve, the control end of the main controller is connected with the control end of the fourth electromagnetic valve, the control end of the main controller is connected with the control end of the biomass furnace, the control end of the main controller is connected with the control end of the hot air door, the control end of the main controller is connected with the control end of the cold air door, and the control end of the main controller is connected with the control.
The first temperature measuring instrument is fixed inside the solar heat collector, the third temperature measuring instrument is fixed inside the heat collecting water tank, the tenth temperature measuring instrument is fixed indoors on one side of the radiator, the eleventh temperature measuring instrument is located on one side of an outdoor heat insulation and light transmission film, the twelfth temperature measuring instrument is located inside the heat collecting cavity, the first temperature measuring instrument is connected with the main controller and is in one-way communication, the third temperature measuring instrument is connected with the main controller and is in one-way communication, the tenth temperature measuring instrument is connected with the controller of the biomass furnace and is in one-way communication, the eleventh temperature measuring instrument is connected with the main controller and is in one-way communication, and the twelfth temperature measuring instrument is connected with the main controller and is in one-way communication.
The first heating module is used for the first temperature measuring instrument to acquire temperature data of water temperature in the solar heat collector and send the temperature data to the main controller, the main controller receives the temperature data sent by the first temperature measuring instrument and generates first measuring point temperature data, the third temperature measuring instrument acquires the temperature data of the water temperature in the heat collecting water tank and sends the temperature data to the main controller, the main controller receives the temperature data sent by the third temperature measuring instrument and generates third measuring point temperature data, when the first measuring point temperature data is larger than or equal to the third measuring point temperature data, the main controller controls the first electromagnetic valve to be closed, and the main controller controls the first pump to be started; when the temperature data of the first measuring point is less than the temperature data of the third measuring point, the main controller controls the first pump to stop running, and the main controller controls the first electromagnetic valve to open.
The second heating module is used for enabling a third temperature measuring instrument to obtain temperature data of water temperature in the heat collecting water tank and send the temperature data to the main controller, the main controller receives the temperature data sent by the third temperature measuring instrument and generates third measuring point temperature data, when the third measuring point temperature data is larger than a temperature threshold value, the main controller controls the biomass furnace to stop heating, the main controller controls the third electromagnetic valve to be closed, the main controller controls the second electromagnetic valve and the fourth electromagnetic valve to be opened, and the main controller controls the second pump to be started; when the temperature data of the third measuring point is less than or equal to the temperature threshold value, the main controller controls the biomass furnace to heat, the main controller controls the third electromagnetic valve to be opened, the main controller controls the second electromagnetic valve and the fourth electromagnetic valve to be closed, and the main controller controls the second pump to be started.
The fourth heating module is used for the tenth temperature measuring instrument to acquire indoor temperature data and send the indoor temperature data to the main controller, the main controller receives the temperature data sent by the tenth temperature measuring instrument and generates tenth measuring point temperature data, the eleventh temperature measuring instrument acquires outdoor temperature data and sends the outdoor temperature data to the main controller, the main controller receives the temperature data sent by the eleventh temperature measuring instrument and generates eleventh measuring point temperature data, when the eleventh measuring point temperature data is larger than the tenth measuring point temperature data, the main controller controls the hot air door to be closed, and the main controller controls the cold air door and the fan to be opened; the twelfth temperature measuring instrument acquires temperature data of the heat collecting cavity and sends the temperature data to the main controller, the main controller receives the temperature data sent by the twelfth temperature measuring instrument and generates twelfth measuring point temperature data, when the eleventh measuring point temperature data is smaller than the tenth measuring point temperature data and smaller than the twelfth measuring point temperature data, the main controller controls the hot air door and the cold air door to be opened, and the main controller controls the fan to be closed; and when the temperature data of the twelfth measuring point is less than the temperature data of the tenth measuring point, the main controller controls the hot air door and the cold air door to be closed.
The temperature threshold is 40 ℃.
The hardware part of the application is a combined invention, wherein the main controller is a single chip microcomputer, and the main controller, the solar thermal collector, the heat collection water tank, the biomass furnace, the radiator, the hot air door, the cold air door, the heat insulation and light transmission film, the fan, the first pump, the second pump, the first to fourth electromagnetic valves, the check valve, the first temperature measuring instrument, the third temperature measuring instrument, the tenth temperature measuring instrument, the eleventh temperature measuring instrument, the twelfth temperature measuring instrument and corresponding communication connections are not repeated in the prior art.
The purpose of the invention is as follows:
the invention is suitable for control based on clean heating systems. Under the condition of sunny days in winter, self-sufficient heating can be realized under the condition that the wall body has heat insulation by utilizing the energy provided by the sun, and meanwhile, the surplus is generated. In summer, the heat of solar energy is far greater than the heating heat required by farmers in winter, and cross-season heat preservation and heat storage are realized through energy storage of the phase change material, so that cross-season heating can be realized, and the problem of cooling in summer is solved. Rural straws contain a large amount of energy, and the energy is released through comprehensive utilization of biomass, so that the heating requirement can be provided for users. The invention designs a heating system comprising a solar heat collector, a solar hot air subsystem, a water tank, a phase change energy storage and a biomass furnace, and solves the problem of low-cost rural season-crossing heating.
The invention has the characteristics that:
1. a heating system comprising a solar heat collector, a solar hot air subsystem, a heat collection water tank and a biomass furnace is designed, and the problem of rural season-crossing heating with low cost is solved.
2. Solar energy is absorbed by the roof solar thermal collector, is transmitted to the thermal-collecting water tank through the circulating pipeline, and is transmitted to the roof solar thermal collector from the hot water tank to form a heating cycle; the hot water tank is connected with an indoor heating pipeline and a fault pipeline through a circulating pump, and cold water flows back to the heat collecting water tank to form a heating circulation.
3. The biomass furnace is connected in series in a heating circulation, the solar heating subsystem is automatically switched off, and the biomass furnace heating circulation subsystem is switched on. The biomass chemical energy is converted into heat energy to be distributed to a heating space by controlling the combustion of the biomass furnace. The water in the water pipe is connected with the floor heating circulation subsystem, and the smoke passes through the heat dissipation wall and the flue and is discharged outdoors.
5. The solar hot air subsystem takes solar energy as a direct energy source to realize light-heat conversion heating. The heat-insulating and light-transmitting solar heat collector comprises a heat-insulating and light-transmitting film, a heat collecting cavity, an air supply subsystem and an air return subsystem. The solar energy is utilized to directly heat indoor air, and light energy is converted into heat energy to provide heating requirements. This method can utilize solar energy efficiently without intermediate conversion losses. Low cost and high efficiency.
6. According to the system design content, determining a control object and a variable to be collected for cleaning the heating system, analyzing the requirements of the control system, and designing a system control scheme.
7. In order to realize the low cost, the system control is realized by adopting a singlechip.
Description of the technical solution:
1. as shown in FIG. 2, a clean energy heating system comprising a solar heat collector, a heat collecting water tank and a biomass furnace is designed, and a solar hot air subsystem assists in heating and the clean energy heating system.
2. Clean energy heating system
2.1 for the solar heat collector, absorbing solar energy through the roof solar heat collector, and enabling water in the heating pipeline to enter the heat collection water tank from the first inlet of the heat collection water tank through the circulating pipeline for storage; water in the heat collection water tank is conveyed to the roof solar heat collector through the first outlet through the first pump and the circulating pipeline to be heated, and a heating cycle is formed.
S1 heating cycle control method of solar heat collector and heat collection water tank:
s101: in the daytime, when the temperature of the first measuring point t1 is greater than or equal to the temperature of the third measuring point t3, the first pump is started, the electromagnetic valve is closed, water in the heat collecting water tank is pumped out from the first outlet, the water is sent to the solar heat collector through the second water meter, the first pump and the check valve to be heated, and hot water heated by the heat collector enters the heat collecting water tank through the circulating pipeline and the first inlet of the heat collecting water tank to be stored;
s102: at night, the solar thermal collector cannot work, the first pump is stopped, the electromagnetic valve is opened, water in the solar thermal collector enters the thermal-collecting water tank through the circulating pipeline and the first inlet of the thermal-collecting water tank, and water in the solar thermal collector flows back to the thermal-collecting water tank through the first electromagnetic valve and the water meter under the action of gravity. The water in the solar heat collector flows back to the water tank at night, so that the heat dissipation capacity of the solar heat collector can be reduced.
2.2 for the indoor radiator, the water in the heat collecting water tank is connected with the indoor radiator through a second outlet, a second electromagnetic valve, a second pump and the biomass furnace for heating, and cold water radiated by the indoor radiator flows back to the heat collecting water tank through a third water meter, a fourth electromagnetic valve and a second inlet to form a heating cycle.
S2 heating cycle control method:
s201: when the temperature of a third measuring point t3 in the heat collection water tank is higher than 40 ℃, the third electromagnetic valve is closed, the second electromagnetic valve and the fourth electromagnetic valve are opened, the biomass furnace stops running, and hot water in the heat collection water tank is subjected to heat supply circulation through the second pump;
s202: when the temperature of a third measuring point t3 in the heat collecting water tank is lower than 40 ℃, the third electromagnetic valve is opened, the second electromagnetic valve and the fourth electromagnetic valve are closed, the biomass furnace automatically adjusts and operates according to the temperature of an indoor tenth measuring point t10, and heat supply circulation is carried out through the second pump.
And 2.3, the biomass furnace is used as a supplementary energy source in the system for heating. The biomass furnace is connected in series in a heating circulation, and the solar heating system is automatically switched off and the heating circulation system of the biomass furnace is switched on by adopting automatic control.
2.4 the second pump is heating circulating water frequency conversion pump, operates always during the heating, can carry out variable speed control according to indoor temperature, when indoor temperature was too high, can reduce the flow operation.
2.5 the function of the heat collecting water tank not only lies in the storage of heat, but also lies in buffering the change of the water quantity in the solar heat collector system in the heat collecting water tank when the first pump is started and stopped. In order to prevent the phenomenon that the water temperature cannot be heated to a sufficient heating requirement due to excessive water in the system, the water quantity and the temperature in the heat collection water tank need to be controlled.
S3 heat collecting water tank liquid level meter temperature control method:
s301: an electric heater is arranged in the heat collecting water tank, and electric heating assistance is provided under special conditions. When the temperature of a third measuring point t3 in the heat collecting water tank is less than 16 ℃, starting the electric heater; and when the temperature of the third measuring point t3 in the heat collecting water tank is more than 40 ℃, the electric heater is turned off.
S302: when no water exists in the solar thermal collector, the liquid level in the thermal collecting water tank is higher than the first liquid level meter, and the water discharging and supplementing valve is opened to discharge water to the position of the first liquid level meter; and if the liquid level in the heat collection water tank is lower than the first liquid level meter, opening the water discharging and supplementing valve to supplement water to the position of the first liquid level meter. When the liquid level in the heat collection water tank is lower than the second liquid level, the first pump stops running, and the heat collection water tank is prevented from being empty of water.
Therefore, the heat collected by the solar heat collector is quickly sent into the room to heat the room, and the temperature of the objects such as the walls, the floor, the home and the like in the room is increased to form the heat storage amount.
2.6 the heat collection water tank is internally provided with a phase change heat storage material, and a proper phase change material is selected to realize perfect heat exchange with water in the heat collection water tank, so that guarantee is provided for large-capacity long-period heat storage.
3. Solar hot air subsystem
3.1 As shown in FIG. 3, the solar hot air subsystem comprises a heat-insulating light-transmitting film, a heat collecting cavity, a cold air door, a hot air door and a fan. A heat collection cavity is formed between the heat insulation light-transmitting film and the indoor wall body, the heat collection cavity is communicated with the indoor through a cold air door and a hot air door, and the heat collection cavity is communicated with the outdoor through a fan. The solar energy is utilized to heat the air in the heat collecting cavity, and the light energy is converted into heat energy to provide heating requirements.
3.2 solar hot air subsystem control method
S4 solar hot air subsystem control method:
s401: when the temperature of the outdoor eleventh measuring point t11 is far higher than that of the indoor tenth measuring point t10 in summer, the hot air door is closed, the cold air door is opened, and the fan is opened to discharge indoor hot air outwards;
s402: when the temperature of the outdoor eleventh measuring point t11 is far lower than the temperature of the indoor tenth measuring point t10 in winter and the sunlight is sufficient, the temperature of the twelfth measuring point t12 in the heat collecting cavity is higher than the temperature of the indoor tenth measuring point t10, the cold and hot air door is opened, so that the hot air in the heat collecting cavity and the indoor air are circulated, and the indoor temperature is increased;
s403: and when the temperature of the twelfth measuring point t12 in the heat collecting cavity is lower than the temperature of the tenth indoor measuring point t10, closing the cold and hot air door and keeping the indoor temperature.
4. Clean energy heating control system
4.1 control system specific demand analysis as shown in table 1. According to the system design content, the variables to be collected include: t 1-t 12, 12 temperature measurement points in total; l1, a liquid level measurement point.
Table 1: control demand meter
4.2 clean heating system required control objects mainly include: the system comprises a first pump start-stop control device, a water second pump variable frequency speed control device, first to fourth electromagnetic valves, a water discharging and supplementing valve, a biomass furnace, a heat collection water tank electric heater, a solar hot air subsystem fan and a cold and hot air door.
According to the demand analysis, the control system needs to realize at least 13 AI nodes, 2 DI nodes, 1 AO node, 11 DO nodes and an industrial control screen interface.
4.3 as shown in fig. 4, a single chip microcomputer is adopted to realize system control, and the main control board card and the expansion board card are connected through a bus. The main control board and the expansion board are connected with each actuating mechanism, the transmitter and the display screen. The system overall control scheme mainly comprises a main controller, an industrial control screen, a frequency converter, a contactor, a transmitter and a sensor.
After the application runs secretly for a period of time, the feedback of field technicians has the advantages that:
a control system based on clean energy heating comprises a solar thermal collector, a heat collecting water tank, a biomass furnace, an indoor radiator, a first pump and a second pump, wherein the solar thermal collector, the heat collecting water tank and the first pump are connected in series to form a first loop, and the heat collecting water tank, the second pump, the biomass furnace and the indoor radiator are connected in series to form a second loop. The solar energy heating system realizes high energy heating efficiency through the solar heat collector, the heat collection water tank, the biomass furnace, the indoor radiator, the first pump, the second pump and the like.
The method is oriented to rural clean heating, solar energy, biomass energy and the like are comprehensively utilized, and the problem of low-cost rural heating is solved by accurately controlling multi-energy complementation and phase change storage.
According to the method, rural season-crossing heating is realized through low-cost heating control of solar energy, phase change energy storage, biomass energy and the like and large-capacity long-period heat storage of the phase change material.
The method avoids the defects of unstable operation and high cost of the existing heating equipment after modification, and improves the overall utilization efficiency of energy.
Claims (10)
1. A control system based on clean energy heating, its characterized in that: the solar heat collector, the heat collecting water tank and the first pump are connected in series to form a first loop, and the heat collecting water tank, the second pump, the biomass furnace and the indoor radiator are connected in series to form a second loop.
2. The clean energy based heating control system of claim 1, wherein: a first outlet of the heat collection water tank is connected and communicated with a first inlet of the heat collection water tank through a pipeline sequentially through a first pump and a solar heat collector; and a second outlet of the heat collection water tank is connected and communicated with a second inlet of the heat collection water tank through a second pump, the biomass furnace and an indoor radiator in sequence through pipelines.
3. The clean energy based heating control system of claim 1, wherein: the solar heat collector comprises a solar heat collector and is characterized by further comprising a controller, a first temperature measuring instrument arranged in the solar heat collector, a third temperature measuring instrument arranged in the solar heat collector and a first electromagnetic valve, wherein the first loop further comprises a check valve, a first outlet of the solar heat collector sequentially passes through a first pump, the check valve, an inlet of the solar heat collector and an outlet of the solar heat collector through pipelines to be communicated to a first inlet of the solar heat collector and form a first loop, a first outlet of the solar heat collector is communicated to an inlet of the solar heat collector through the first electromagnetic valve through pipelines, the controller is a main controller, the first temperature measuring instrument is connected with the main controller and is in one-way communication, the third temperature measuring instrument is connected with the main controller and is in one-way communication, and a control end of the first pump is connected with a control end of the first electromagnetic valve respectively.
4. The clean energy based heating control system of claim 3, wherein: the heating system also comprises a first heating module, a second heating module and a third heating module, wherein the first heating module is used for enabling a first temperature measuring instrument to acquire temperature data of water temperature in the solar heat collector and send the temperature data to a main controller, the main controller receives the temperature data sent by the first temperature measuring instrument and generates first measuring point temperature data, a third temperature measuring instrument acquires the temperature data of the water temperature in the heat collecting water tank and sends the temperature data to the main controller, the main controller receives the temperature data sent by the third temperature measuring instrument and generates third measuring point temperature data, when the first measuring point temperature data is larger than or equal to the third measuring point temperature data, the main controller controls a first electromagnetic valve to be closed, and the main controller; when the temperature data of the first measuring point is less than the temperature data of the third measuring point, the main controller controls the first pump to stop running, and the main controller controls the first electromagnetic valve to open.
5. The clean energy based heating control system of claim 3, wherein: the second outlet of the heat collection water tank sequentially passes through the second electromagnetic valve, the second pump, the biomass furnace, the indoor radiator and the fourth electromagnetic valve through pipelines to be connected and conducted to the second inlet of the heat collection water tank and form a second loop; one end of the third electromagnetic valve is connected to the joint of the second electromagnetic valve and the second pump, the other end of the third electromagnetic valve is connected to the joint of the fourth electromagnetic valve and the radiator, and the third electromagnetic valve, the second pump, the biomass furnace and the radiator which are connected in series form a third loop; and the control end of the main controller is respectively connected with the control end of the second pump, the control end of the biomass furnace, the control end of the second electromagnetic valve, the control end of the third electromagnetic valve and the control end of the fourth electromagnetic valve.
6. The clean energy based heating control system of claim 5, wherein: the second heating module is used for enabling a third temperature measuring instrument to obtain temperature data of water temperature in the heat collecting water tank and send the temperature data to the main controller, the main controller receives the temperature data sent by the third temperature measuring instrument and generates third measuring point temperature data, when the third measuring point temperature data is larger than a temperature threshold value, the main controller controls the biomass furnace to stop heating, the main controller controls the third electromagnetic valve to be closed, the main controller controls the second electromagnetic valve and the fourth electromagnetic valve to be opened, and the main controller controls the second pump to be started; when the temperature data of the third measuring point is less than or equal to the temperature threshold value, the main controller controls the biomass furnace to heat, the main controller controls the third electromagnetic valve to be opened, the main controller controls the second electromagnetic valve and the fourth electromagnetic valve to be closed, and the main controller controls the second pump to be started.
7. The clean energy based heating control system of claim 6, wherein: the temperature threshold is 40 ℃.
8. The clean energy based heating control system of claim 3, wherein: the biomass furnace further comprises a tenth temperature measuring instrument arranged in a chamber on one side of the radiator, and the tenth temperature measuring instrument is connected with the controller of the biomass furnace and is in one-way communication with the controller.
9. The clean energy based heating control system of claim 8, wherein: the solar energy hot air device comprises a hot air door arranged at one end of a wall body at one indoor side, a cold air door arranged at the other end of the wall body, a heat insulation and light transmission film arranged at the outer side of the wall body and a fan arranged on the heat insulation and light transmission film, the heat-insulating light-transmitting film and the wall body form a heat collecting cavity, the heat collecting cavity is communicated with the outside through a fan, the heat collecting cavity is communicated with the inside through a hot air door and a cold air door respectively, the twelfth temperature measuring instrument is positioned inside the heat collecting cavity, the eleventh temperature measuring instrument is positioned at one side of the outdoor heat-insulating light-transmitting film, the tenth temperature measuring instrument, the eleventh temperature measuring instrument and the twelfth temperature measuring instrument are respectively connected with the main controller and are in one-way communication, and the control end of the main controller is respectively connected with the control end of the hot air door, the control end of the cold air door and the control end of the fan.
10. The clean energy based heating control system of claim 8, wherein: the solar hot air device and the fourth heating module form a solar hot air subsystem, the fourth heating module is used for the tenth temperature measuring instrument to acquire indoor temperature data and send the indoor temperature data to the main controller, the main controller receives the temperature data sent by the tenth temperature measuring instrument and generates tenth measuring point temperature data, the eleventh temperature measuring instrument acquires outdoor temperature data and sends the outdoor temperature data to the main controller, the main controller receives the temperature data sent by the eleventh temperature measuring instrument and generates eleventh measuring point temperature data, when the eleventh measuring point temperature data is larger than the tenth measuring point temperature data, the main controller controls the hot air door to be closed, and the main controller controls the cold air door and the fan to be opened; the twelfth temperature measuring instrument acquires temperature data of the heat collecting cavity and sends the temperature data to the main controller, the main controller receives the temperature data sent by the twelfth temperature measuring instrument and generates twelfth measuring point temperature data, when the eleventh measuring point temperature data is smaller than the tenth measuring point temperature data and smaller than the twelfth measuring point temperature data, the main controller controls the hot air door and the cold air door to be opened, and the main controller controls the fan to be closed; and when the temperature data of the twelfth measuring point is less than the temperature data of the tenth measuring point, the main controller controls the hot air door and the cold air door to be closed.
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