CN110657589A - System for preparing constant-temperature water by using solar energy and control method - Google Patents
System for preparing constant-temperature water by using solar energy and control method Download PDFInfo
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- CN110657589A CN110657589A CN201910851250.9A CN201910851250A CN110657589A CN 110657589 A CN110657589 A CN 110657589A CN 201910851250 A CN201910851250 A CN 201910851250A CN 110657589 A CN110657589 A CN 110657589A
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- water tank
- temperature
- hot water
- electromagnetic valve
- water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/40—Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
- F24S40/50—Preventing overheating or overpressure
- F24S40/52—Preventing overheating or overpressure by modifying the heat collection, e.g. by defocusing or by changing the position of heat-receiving elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S50/00—Arrangements for controlling solar heat collectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S50/00—Arrangements for controlling solar heat collectors
- F24S50/40—Arrangements for controlling solar heat collectors responsive to temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S60/00—Arrangements for storing heat collected by solar heat collectors
- F24S60/30—Arrangements for storing heat collected by solar heat collectors storing heat in liquids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S70/00—Details of absorbing elements
- F24S70/10—Details of absorbing elements characterised by the absorbing material
- F24S70/12—Details of absorbing elements characterised by the absorbing material made of metallic material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
- F24S80/30—Arrangements for connecting the fluid circuits of solar collectors with each other or with other components, e.g. pipe connections; Fluid distributing means, e.g. headers
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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
- Y02E10/44—Heat exchange systems
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses a system for preparing constant-temperature water by solar energy, which comprises a heat collection water tank, a temperature regulation water tank, a low-temperature hot water tank, a high-temperature hot water tank, a heat collector, an automatic sun-shading system, a pump system, an electromagnetic valve system and a controller, wherein the heat collection water tank is connected with the low-temperature hot water tank; a temperature monitoring device and a liquid level monitoring device are arranged in the heat collection water tank, the temperature regulating water tank, the low-temperature hot water tank and the high-temperature hot water tank; the heat collector is connected with the heat collection water tank, the heat collection water tank is connected with the temperature regulating water tank, the heat collection water tank is connected with the high-temperature hot water tank, and the temperature regulating water tank is connected with the low-temperature hot water tank through a pump system and an electromagnetic valve system; the controller is connected with the pump system, the solenoid valve system and the automatic sun-shading system and is used for preparing hot water with constant temperature through a set program. The invention controls the pump system, the solenoid valve system and the automatic sun-shading system through the running of a set program of the controller, and realizes the aim of providing constant-temperature bathing hot water for a hot water faucet of a user on the premise of 'instability of a single solar heat source'.
Description
Technical Field
The invention relates to the technical field of solar energy, in particular to a system for preparing constant-temperature water by solar energy and a control method.
Background
People without civil activity are part of the social group and people without civil activity can encounter various problems in daily life. For example, when a mental patient takes a bath, the temperature of bath hot water is high or low, and the corresponding judgment capability is lacked, so that scalding or catching a cold accident can be easily caused. Therefore, the temperature of the bathing hot water must be controlled to be basically stabilized between 45 ℃ and 50 ℃ (can be adjusted according to actual requirements). However, the illumination intensity of solar energy is limited by the conditions such as region, season, climate, weather, etc., and has great volatility, that is, the solar energy heat source has great instability. If a conventional solar water heating system utilization mode is adopted, the fluctuation of the solar illumination intensity influences the hot water temperature and the hot water capacity of the solar heat collecting system to be suddenly high or low, and the requirement that the bathing hot water is constant between 45 ℃ and 50 ℃ cannot be met.
However, solar energy is the cleanest and cheap heat source, and the solar energy should be utilized as much as possible in the conditional places, which also meets the national energy policy requirements.
Therefore, in order to solve the problem of instability of a single solar heat source and the contradiction between supply and demand and constant hot water temperature, a system for preparing constant-temperature water by using solar energy and a control method thereof need to be designed to overcome the defects in the prior art.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a system for preparing constant-temperature water by using solar energy and a control method.
In order to achieve the above objects and other related objects, the present invention provides the following technical solutions: a system and a control method for preparing constant temperature water by solar energy are characterized in that: the solar water heater comprises a heat collection water tank, a temperature regulating water tank, a low-temperature hot water tank, a high-temperature hot water tank, a heat collector, an automatic sun-shading system, a pump system, an electromagnetic valve system and a controller; the heat collection water tank, the temperature regulating water tank, the low-temperature hot water tank and the high-temperature hot water tank are all provided with a temperature monitoring device and a liquid level monitoring device; the heat collector is connected with the heat collecting water tank, the heat collecting water tank is connected with the temperature regulating water tank, the heat collecting water tank is connected with the high-temperature hot water tank, and the temperature regulating water tank is connected with the low-temperature hot water tank through the pump system and the electromagnetic valve system; the controller is connected with the pump system, the solenoid valve system and the automatic sun-shading system and is used for preparing hot water with constant temperature through a set program.
The preferable technical scheme is as follows: the temperature monitoring device comprises a first temperature sensor arranged in the heat collecting water tank, a second temperature sensor arranged in the temperature adjusting water tank, a third temperature sensor arranged in the low-temperature hot water tank, a fourth temperature sensor arranged in the high-temperature hot water tank and a fifth temperature sensor arranged at a hot water outlet of the heat collector.
The preferable technical scheme is as follows: the liquid level monitoring device comprises a first liquid level sensor arranged in the heat collecting water tank, a second liquid level sensor arranged in the temperature adjusting water tank, a third liquid level sensor arranged in the low-temperature hot water tank and a fourth liquid level sensor arranged in the high-temperature hot water tank.
The preferable technical scheme is as follows: the pump system comprises a heat collecting water tank, a first water pump, a second water pump, a third water pump, a fifth water pump and a sixth water pump, wherein the first water pump is arranged on a connecting pipeline between a heat collecting water tank and a heat collector cold water inlet, the second water pump is arranged on a connecting pipeline between the heat collecting water tank and a temperature regulating water tank, the third water pump is arranged on a first connecting pipeline between the temperature regulating water tank and a low-temperature hot water tank, the fifth water pump is arranged on a third connecting pipeline between the heat collecting water tank and a high-temperature hot water tank, and the sixth water pump is arranged on a common cold water.
The preferable technical scheme is as follows: the electromagnetic valve system comprises a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve, a fourth electromagnetic valve, a fifth electromagnetic valve, a sixth electromagnetic valve, a seventh electromagnetic valve, an eighth electromagnetic valve, a ninth electromagnetic valve and a tenth electromagnetic valve, a first branch pipeline and a second branch pipeline are arranged on the cold water inlet pipeline, the first branch pipeline is connected with the heat collecting water tank, the second branch pipeline is connected with the temperature regulating water tank, the first electromagnetic valve is arranged on the first branch pipeline, the second electromagnetic valve is arranged on the second branch pipeline, the third electromagnetic valve is arranged on a second connecting pipeline between the temperature regulating water tank and the low-temperature hot water tank, the fourth electromagnetic valve is arranged on a fourth connecting pipeline between the heat collecting water tank and the high-temperature hot water tank, and the fifth electromagnetic valve is arranged on the low-temperature hot water tank water outlet pipeline, the sixth electromagnetic valve is arranged on the temperature-regulating water tank water outlet pipeline, the low-temperature hot water tank water outlet pipeline and the temperature-regulating water tank water outlet pipeline are merged into a constant-temperature water pipeline, the constant-temperature water pipeline is connected with the temperature-regulating water tank, and the constant-temperature water pipeline is provided with the seventh electromagnetic valve, the eighth electromagnetic valve, the ninth electromagnetic valve, the tenth electromagnetic valve and a fourth water pump.
The preferable technical scheme is as follows: a return pipe is arranged between the temperature regulating water tank and the heat collecting water tank, and a return pipe is arranged between the heat collecting water tank and the high-temperature hot water tank.
The preferable technical scheme is as follows: the heat collector adopts a silicon-boron vacuum heat collecting tube for heat collection, and a superconductive copper rod is arranged in the silicon-boron vacuum heat collecting tube as a heat conductor.
The preferable technical scheme is as follows: and a vertical diaphragm type air pressure tank is arranged at the water inlet of the cold water inlet pipeline.
The invention also discloses a control method of the solar energy preparation constant temperature water system, which comprises the following operation steps: firstly, a controller controls a solenoid valve system and a pump system to supplement water for a heat collecting water tank, then the controller controls the pump system to input cold water in the heat collecting water tank into a heat collector to exchange heat, heated high-temperature hot water flows back to the heat collecting water tank, then the controller controls the pump system to input high-temperature hot water in the heat collecting water tank into a temperature regulating water tank, meanwhile, the controller controls the solenoid valve system to input cold water into the temperature regulating water tank to regulate the temperature, then the controller controls the solenoid valve system or the pump system to input low-temperature hot water into a low-temperature hot water tank for standby, in the process, the temperature of the temperature regulating water tank and the temperature of the low-temperature hot water tank are regulated to be within a usable low-temperature hot water temperature range, finally, the controller controls the solenoid valve system and the pump system to convey prepared low-temperature hot water from the low-temperature hot water tank or the temperature regulating water tank to a user faucet, in addition, the high-, and is recycled through an electromagnetic valve system under the control of the controller.
The preferable technical scheme is as follows: the controller operates according to a set program when controlling the pump system and the solenoid valve system, and the reference parameters are provided by a water level sensor and a temperature sensor in the system when operating the program.
The preferable technical scheme is as follows: the controller controls the electric shading net to shade the heat collector according to the temperature or liquid level conditions in the temperature-adjusting water tank, the high-temperature hot water tank, the low-temperature hot water tank and the heat collecting water tank.
Due to the application of the technical scheme, compared with the prior art, the invention has the advantages that:
1. the invention adopts the superconductive copper bar as the heat conduction material in the heat collector, thereby greatly improving the utilization efficiency of solar energy.
2. The invention starts and stops the pump system, the solenoid valve system and the automatic sun shading system through the running of a well set program of the controller, finally realizes that the constant-temperature bathing hot water is provided for the hot water faucet of a user on the premise of 'instability of a single solar heat source', and can avoid scalding or catching a cold when the user does not have civil performance.
Drawings
FIG. 1 is a schematic view of the present invention.
In the above drawings:
1. a heat collecting water tank; 2. a temperature-regulating water tank; 3. a low temperature hot water tank; 4. a high temperature hot water tank; 5. a heat collector; 6. a first water pump; 7. a second water pump; 8. a third water pump; 9. a fifth water pump; 10. a sixth water pump; 11. a fourth water pump; 12. a first solenoid valve; 13. a second solenoid valve; 14. a third electromagnetic valve; 15. a fourth solenoid valve; 16. a fifth solenoid valve; 17. a sixth electromagnetic valve; 18. a seventh electromagnetic valve; 19. an eighth solenoid valve; 20. a ninth electromagnetic valve; 21. a tenth solenoid valve; 22. a fifth temperature sensor; 23. a first temperature sensor; 24. a second temperature sensor; 25. a third temperature sensor; 26. a fourth temperature sensor; 27. a first liquid level sensor; 28. a second liquid level sensor; 29. a third liquid level sensor; 30. a fourth liquid level sensor; 31. a first connecting pipe; 32. a second connecting pipe; 33. a second branch conduit; 34. a first branch conduit; 35. a fourth connecting pipe; 36. a third connecting pipe; 37. a constant-temperature water pipeline; 38. a return pipe; 39. an automatic sun-shading system; 40. a vertical diaphragm type air pressure tank; 41. and a controller.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
Please refer to fig. 1. It should be understood that in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which the product of the present invention is usually placed in when used, which is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. The terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should be further noted that, unless otherwise specifically stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, and a communication between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, a system for preparing constant temperature water by solar energy and a control method thereof comprise a heat collecting water tank 1, a temperature regulating water tank 2, a low temperature hot water tank 3, a high temperature hot water tank 4, a heat collector 5, an automatic sun shading system 39 and a controller 41; a temperature monitoring device and a liquid level monitoring device are arranged in the heat collection water tank 1, the temperature regulating water tank 2, the low-temperature hot water tank 3 and the high-temperature hot water tank 4 respectively and are used for monitoring the temperature and the liquid level state of each water tank; the heat collector 5 is connected with the heat collection water tank 1, the heat collection water tank 1 is connected with the temperature regulation water tank 2, the heat collection water tank 1 is connected with the high temperature hot water tank 4, and the temperature regulation water tank 2 is connected with the low temperature hot water tank 3 through a pump system and an electromagnetic valve system; the controller 41 is connected with the pump system, the solenoid valve system and the automatic sun-shading system 39, and is used for preparing hot water with constant temperature through a set program.
The preferred embodiment is: the temperature monitoring device comprises a first temperature sensor 23 arranged in the heat collecting water tank 1, a second temperature sensor 24 arranged in the temperature adjusting water tank 2, a third temperature sensor 25 arranged in the low-temperature hot water tank 3, a fourth temperature sensor 26 arranged in the high-temperature hot water tank 4 and a fifth temperature sensor 22 arranged at a hot water outlet of the heat collector 5, and is used for monitoring the water temperature state of each water tank.
The preferred embodiment is: the liquid level monitoring device comprises a first liquid level sensor 27 arranged in the heat collecting water tank 1, a second liquid level sensor 28 arranged in the temperature regulating water tank 2, a third liquid level sensor 29 arranged in the low-temperature hot water tank 3 and a fourth liquid level sensor 30 arranged in the high-temperature hot water tank 4, and is used for monitoring the liquid level state of each water tank.
The preferred embodiment is: the pump system comprises a first water pump 6 arranged on a connecting pipeline between a heat collecting water tank 1 and a cold water inlet of a heat collector 5 and used for pumping cold water in the heat collecting water tank 1 into the heat collector 5 for heating; the second water pump 7 is arranged on a connecting pipeline between the heat collecting water tank 1 and the temperature regulating water tank 2 and is used for pumping the prepared high-temperature hot water in the heat collecting water tank 1 into the temperature regulating water tank 2 to regulate the temperature; the third water pump 8 is arranged on the first connecting pipeline 31 between the temperature-adjusting water tank 2 and the low-temperature hot water tank 3 and is used for pumping the prepared low-temperature hot water which meets the temperature requirement in the temperature-adjusting water tank 2 into the low-temperature hot water tank 3 for standby; a fifth water pump 9 provided on a third connection pipe 36 between the heat collecting water tank 1 and the high temperature hot water tank 4, for pumping surplus high temperature hot water in the heat collecting water tank 1 into the high temperature hot water tank 4 for standby; and the sixth water pump 10 is arranged on a common cold water inlet pipeline of the heat collecting water tank 1 and the temperature regulating water tank 2 and is used for pumping cold water into the heat collecting water tank 1 to be supplied to the heat collector 5 for heating and pumping the cold water into the temperature regulating water tank 2 for regulating the temperature.
The preferred embodiment is: the electromagnetic valve system comprises a first electromagnetic valve 12, a second electromagnetic valve 13, a third electromagnetic valve 14, a fourth electromagnetic valve 15, a fifth electromagnetic valve 16, a sixth electromagnetic valve 17, a seventh electromagnetic valve 18, an eighth electromagnetic valve 19, a ninth electromagnetic valve 20 and a tenth electromagnetic valve 21, a first branch pipeline 34 and a second branch pipeline 33 are arranged on a cold water inlet pipeline, the first branch pipeline 34 is connected with the heat collection water tank 1, the second branch pipeline 33 is connected with the temperature-regulating water tank 2, the first electromagnetic valve 12 is arranged on the first branch pipeline 34, the second electromagnetic valve 13 is arranged on the second branch pipeline 33, the third electromagnetic valve 14 is arranged on a second connecting pipeline 32 between the temperature-regulating water tank 2 and the low-temperature hot water tank 3, the fourth electromagnetic valve 15 is arranged on a fourth connecting pipeline 35 between the heat collection water tank 1 and the high-temperature hot water tank 4, the fifth electromagnetic valve 16 is arranged on a water outlet pipeline of the low-temperature hot water tank 3, the sixth electromagnetic valve 17 is arranged on the water outlet pipeline of the temperature-regulating water tank 2, the water outlet pipeline of the low-temperature hot water tank 3 and the water outlet pipeline of the temperature-regulating water tank 2 are merged into the constant-temperature water pipeline 37, the constant-temperature water pipeline 37 is connected with the temperature-regulating water tank 2, the constant-temperature water pipeline 37 is provided with a seventh electromagnetic valve 18, an eighth electromagnetic valve 19, a ninth electromagnetic valve 20, a tenth electromagnetic valve 21 and a fourth water pump 11, and the controller 41 controls the on-off of the fourth water pump 11, the third electromagnetic valve 14, the fifth electromagnetic valve 16, the sixth electromagnetic valve 17, the seventh electromagnetic valve 18, the eighth electromagnetic valve 19, the ninth electromagnetic valve 20 and the tenth electromagnetic valve 21 to provide constant-temperature bathing water for the hot water faucet of a user so as to avoid frostbite.
The preferred embodiment is: a return pipe 38 is arranged between the temperature-adjusting water tank 2 and the heat collecting water tank 1, and the return pipe 38 is arranged between the heat collecting water tank 1 and the high-temperature hot water tank 4, so that the high-temperature hot water in the heat collecting water tank 1 is prevented from overflowing and being wasted.
The preferred embodiment is: the heat collector 5 adopts a silicon-boron vacuum heat collecting tube for heat collection, a superconductive copper rod is arranged in the silicon-boron vacuum heat collecting tube as a heat conductor, the heat conduction temperature of the superconductive copper rod can reach 300 ℃, and the solar heat exchange efficiency is greatly improved.
The preferred embodiment is: the water inlet of the cold water inlet pipeline is provided with a vertical diaphragm type air pressure tank 40 to ensure that the heat collection water tank 1 and the temperature regulating water tank 2 can supplement water in time.
The invention has the automatic control program:
firstly, working procedures of a heat collection water tank:
1. when the liquid level in the heat collecting water tank 1 is lower than 1.2m, the controller 41 controls the first electromagnetic valve 12 to open to start water supplement.
When the liquid level in the heat collecting water tank 1 is lower than 1m, the controller 41 gives an alarm. And (4) prompting: and alarming, wherein the liquid level of the heat collecting water tank 1 is ultralow.
2. When the liquid level in the heat collecting water tank 1 is higher than 1.9m, the controller 41 controls the first electromagnetic valve 12 to close, and water supplement is stopped.
When the liquid level in the heat collecting water tank 1 is higher than 2.1m, the controller 41 issues an alarm. And (4) prompting: and alarming, wherein the liquid level of the heat collecting water tank 1 is ultrahigh.
3. When the water outlet temperature of the heat collector 5 (the fifth temperature sensor 22) is higher than 65 ℃ and the water outlet temperature of the heat collector 5 is 10 ℃ higher than the water temperature of the heat collecting water tank 1, the controller 41 controls the first water pump 6 to operate; on the contrary, if the water temperature of the heat collector 5 is not higher than the water temperature of the heat collection water tank 1 by 10 ℃, the controller 41 controls the first water pump 6 to stop working.
4. When the water temperature of the heat collecting water tank 1 is higher than 97 ℃, the controller 41 gives an alarm to prompt: and alarming, wherein the temperature of the heat collecting water tank 1 is too high.
5. When the fifth temperature sensor 22 is lower than 5 ℃, the controller 41 gives an alarm to control the first water pump 6 to operate according to the following program: running for 5 minutes, stopping for 20 minutes, running for 5 minutes, and running in a reciprocating cycle. And (4) prompting: the temperature of the heat collecting pipeline is too low, and the heat collecting pipeline enters anti-freezing circulation.
II, working procedure of the temperature regulating water tank:
1. when the liquid level of the temperature regulating water tank 2 is lower than 2m, the water temperature in the temperature regulating water tank 2 is lower than 45 ℃, and the water temperature in the heat collecting water tank 1 is lower than 45 ℃, the solar energy is weaker at the moment, and the solar heat collecting water tank has no utilization value. The controller 41 prompts: the solar energy is insufficient.
2. When the liquid level of the temperature-adjusting water tank 2 is lower than 2m, the water temperature in the temperature-adjusting water tank 2 is lower than 45 ℃, and the water temperature in the heat-collecting water tank 1 is between 45 ℃ and 55 ℃, the controller 41 prompts: the solar heat collection is low, and the heat collection water temperature is low.
3. When the liquid level of the temperature-adjusting water tank 2 is lower than 2m, the water temperature in the temperature-adjusting water tank 2 is lower than 45 ℃, the water temperature in the heat-collecting water tank 1 is higher than 55 ℃, the controller 41 controls the second water pump 7 to start, the heat collector 5 starts to collect heat at the moment, the temperature of the heat-collecting water tank 1 is higher, and the heat source is sufficient; when the second water pump 7 is started, the liquid level of the temperature-regulating water tank 2 rises; the temperature of the temperature-adjusting water tank 2 rises. The controller 41 prompts: the solar energy is collected, and the hot water is collected.
4. When the liquid level of the temperature-adjusting water tank 2 is lower than 2m, the water temperature in the temperature-adjusting water tank 2 is between 45 ℃ and 50 ℃, and the water temperature in the heat-collecting water tank 1 is higher than 55 ℃, the second water pump 7 is started. Otherwise, the second water pump 7 is turned off. The controller 41 prompts: the solar energy has high heat collection and collects hot water temperature.
When the temperature of the water in the temperature-adjusting water tank 2 is higher than 50 ℃, the controller 41 controls the second electromagnetic valve 13 to be started, and cold water is added for temperature adjustment. The controller 41 prompts: and operating the temperature regulating system.
When the liquid level in the temperature-adjusting water tank 2 is higher than 2m, the controller 41 sends out a prompt: the temperature regulating water tank is full;
when the fifth temperature sensor 22 is lower than 5 ℃, the controller 41 gives an alarm to control the first water pump 6 to operate according to the following program: running for 5 minutes, stopping for 20 minutes, running for 5 minutes, and running in a reciprocating cycle. And (4) prompting: and alarming, wherein the temperature of the heat collecting pipeline is too low, and the heat collecting pipeline enters an anti-freezing cycle.
Thirdly, working procedure of the low-temperature hot water tank:
1. when the liquid level in the temperature-adjusting water tank 2 is higher than 1.85m, the liquid level in the temperature-adjusting water tank 2 is higher than the liquid level in the low-temperature hot water tank 3, and the water temperature in the temperature-adjusting water tank 2 is higher than 45.5 ℃, the controller 41 controls the third electromagnetic valve 14 to be opened, so that the low-temperature hot water meeting the requirements flows into the low-temperature hot water tank 3.
2. When the liquid level in the temperature-adjusting water tank 2 is lower than 1.85m, or the liquid level in the temperature-adjusting water tank 2 is higher than the liquid level in the low-temperature hot water tank 3, or the water temperature in the temperature-adjusting water tank 2 is lower than 45.5 ℃, the controller 41 controls the third electromagnetic valve 14 to be closed.
3. When the liquid level in the temperature-adjusting water tank 2 is higher than 1.85m, the liquid level in the low-temperature hot water tank 3 is higher than 1.85m, the water temperature in the temperature-adjusting water tank 2 is higher than 45.5 ℃, and the temperature difference between the low-temperature hot water tank 3 and the temperature-adjusting water tank 2 exceeds 3 ℃ (the water temperature in the low-temperature hot water tank 3 is lower than the water temperature in the temperature-adjusting water tank 2), the controller 41 controls the third water pump 8 to start, the third electromagnetic valve 14 is opened, and hot water circularly flows in the temperature-adjusting water tank 2 and the low-temperature hot water tank 3 to balance the temperature.
4. When the liquid level in the temperature-adjusting water tank 2 is higher than 1.85m, the liquid level in the low-temperature hot water tank 3 is higher than 1.85m, the water temperature in the temperature-adjusting water tank 2 is higher than 45.5 ℃, and the temperature difference between the low-temperature hot water tank 3 and the temperature-adjusting water tank 2 is within 1 ℃ (the water temperature in the low-temperature hot water tank 3 is lower than the water temperature in the temperature-adjusting water tank 2), the controller 41 controls the third water pump 8 to be closed, and the third electromagnetic valve 14 is closed.
5. When the liquid level in the low-temperature hot water tank 3 is higher than 2.1m, the controller 41 gives an alarm to prompt: alarm, the liquid level in the low-temperature hot water tank 3 is full;
when the fifth temperature sensor 22 is lower than 5 ℃, the controller 41 gives an alarm to control the first water pump 6 to operate according to the following program: running for 5 minutes, stopping for 20 minutes, running for 5 minutes, and running in a reciprocating cycle. And (4) prompting: and alarming, wherein the temperature of the heat collecting pipeline is too low, and the heat collecting pipeline enters an anti-freezing cycle.
6. When the liquid level in the low temperature hot water tank 3 is higher than 0.3m and the temperature of the water in the low temperature hot water tank 3 is higher than 45 ℃ and less than 50 ℃, the controller 41 controls the fifth electromagnetic valve 16 to be activated.
7. When the liquid level in the low-temperature hot water tank 3 is lower than 0.3m, the liquid level in the temperature-adjusting water tank 2 is higher than 0.3m, and the water temperature in the temperature-adjusting water tank 2 is higher than 45 ℃ and lower than 50 ℃, the controller 41 controls the sixth electromagnetic valve 17 to start.
Fourthly, working procedures of the high-temperature hot water tank:
1. when the liquid level in the temperature-adjusting water tank 2 is higher than 1.9m, the liquid level in the low-temperature hot water tank 3 is higher than 1.9m, the water temperatures in the temperature-adjusting water tank 2 and the low-temperature hot water tank 3 are both between 45 ℃ and 50 ℃, the water temperature in the heat-collecting water tank 1 is higher than 97 ℃, the liquid level in the heat-collecting water tank 1 is higher than 1.9m, and the liquid level in the high-temperature hot water tank 4 is lower than 2.0m, the controller 41 controls the fifth water pump 9 to start, and the surplus high-temperature hot water in the heat-collecting water tank 1 is pumped into the high-temperature hot water tank 4 to be stored. The controller 41 prompts: the temperature of the temperature regulating water tank 2 and the low-temperature hot water tank 3 reaches the standard and is fully stored for standby, and the solar energy storage system is storing energy.
2. When the liquid level in the heat collecting water tank 1 is lower than 1.2m, the liquid level in the temperature adjusting water tank 2 is lower than 0.5m, the liquid level in the low temperature hot water tank 3 is lower than 0.5m, and the water temperatures in the temperature adjusting water tank 2 and the low temperature hot water tank 3 are both between 45 ℃ and 50 ℃, the controller 41 controls the fourth electromagnetic valve 15 to be started. The controller 41 prompts: the temperature-regulating water tank 2 or the low-temperature hot water tank 3 needs energy supplement, and the solar energy storage system is releasing.
3. When the fifth temperature sensor 22 is lower than 5 ℃, the controller 41 gives an alarm to control the first water pump 6 to operate according to the following program: running for 5 minutes, stopping for 20 minutes, running for 5 minutes, and running in a reciprocating cycle. And (4) prompting: and alarming, wherein the temperature of the heat collecting pipeline is too low, and the heat collecting pipeline enters an anti-freezing cycle.
Fifthly, working procedures of the automatic sun-shading system are as follows:
1. when the liquid level in the high-temperature hot water tank 4 is higher than 2.0m and the water temperature in the high-temperature hot water tank 4 is higher than 97 ℃, the controller 41 controls the electric shading net to shade the heat collector 5. The controller 41 prompts: the solar energy is excessive, and the sun-shading system is started.
In the actual operation process, aiming at uncertain factors of solar energy, the invention designs the system operation working conditions of various possible scenes with the sunlight illumination from low to high respectively, and adjusts and controls various links such as hot water requirement, sunlight illumination, production, storage, transportation and the like, thereby utilizing the solar energy to the maximum extent. The controller effectively collects, converts, transmits and logically operates various parameters and sends out operation instructions of the system, and finally solar hot water can be effectively utilized under various sunlight intensities.
The invention adopts the superconducting copper bar as the heat conduction material in the heat collector, the temperature of the superconducting copper bar can reach more than 300 ℃, and the utilization efficiency of solar energy is greatly improved.
Based on the requirements of high and low solar illumination intensity, more and less hot water demand, hot water demand temperature setting requirement, system operation safety (scald prevention, high temperature prevention, frost crack prevention and the like) and other aspects, the change conditions of various related parameters are predicted according to the light and strong state of actual illumination of solar energy changing along with weather, and then the set program is operated by a controller to control a pump system and an electromagnetic valve system, so that a unit and a control system are automatically controlled, and an unattended man-machine interaction interface is realized. Therefore, the contradiction between the uncertainty of sunlight in the utilization of solar hot water and the stable and stable supply of hot water demand parameters is effectively solved.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A system for preparing constant-temperature water by solar energy is characterized in that: the solar water heater comprises a heat collection water tank, a temperature regulating water tank, a low-temperature hot water tank, a high-temperature hot water tank, a heat collector, an automatic sun-shading system, a pump system, an electromagnetic valve system and a controller; the heat collection water tank, the temperature regulating water tank, the low-temperature hot water tank and the high-temperature hot water tank are all provided with a temperature monitoring device and a liquid level monitoring device; the heat collector is connected with the heat collecting water tank, the heat collecting water tank is connected with the temperature regulating water tank, the heat collecting water tank is connected with the high-temperature hot water tank, and the temperature regulating water tank is connected with the low-temperature hot water tank through the pump system and the electromagnetic valve system; the controller is connected with the pump system, the solenoid valve system and the automatic sun-shading system and is used for preparing hot water with constant temperature through a set program.
2. The system for preparing constant temperature water by solar energy according to claim 1, characterized in that: the temperature monitoring device comprises a first temperature sensor arranged in the heat collecting water tank, a second temperature sensor arranged in the temperature adjusting water tank, a third temperature sensor arranged in the low-temperature hot water tank, a fourth temperature sensor arranged in the high-temperature hot water tank and a fifth temperature sensor arranged at a hot water outlet of the heat collector.
3. The system for preparing constant temperature water by solar energy according to claim 1, characterized in that: the liquid level monitoring device comprises a first liquid level sensor arranged in the heat collecting water tank, a second liquid level sensor arranged in the temperature adjusting water tank, a third liquid level sensor arranged in the low-temperature hot water tank and a fourth liquid level sensor arranged in the high-temperature hot water tank.
4. The system for preparing constant temperature water by solar energy according to claim 1, characterized in that: the pump system comprises a heat collecting water tank, a first water pump, a second water pump, a third water pump, a fifth water pump and a sixth water pump, wherein the first water pump is arranged on a connecting pipeline between a heat collecting water tank and a heat collector cold water inlet, the second water pump is arranged on a connecting pipeline between the heat collecting water tank and a temperature regulating water tank, the third water pump is arranged on a first connecting pipeline between the temperature regulating water tank and a low-temperature hot water tank, the fifth water pump is arranged on a third connecting pipeline between the heat collecting water tank and a high-temperature hot water tank, and the sixth water pump is arranged on a common cold water.
5. The system for solar energy preparation of water for constant temperature according to any one of claims 1 or 4, characterized in that: the electromagnetic valve system comprises a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve, a fourth electromagnetic valve, a fifth electromagnetic valve, a sixth electromagnetic valve, a seventh electromagnetic valve, an eighth electromagnetic valve, a ninth electromagnetic valve and a tenth electromagnetic valve, a first branch pipeline and a second branch pipeline are arranged on the cold water inlet pipeline, the first branch pipeline is connected with the heat collecting water tank, the second branch pipeline is connected with the temperature regulating water tank, the first electromagnetic valve is arranged on the first branch pipeline, the second electromagnetic valve is arranged on the second branch pipeline, the third electromagnetic valve is arranged on a second connecting pipeline between the temperature regulating water tank and the low-temperature hot water tank, the fourth electromagnetic valve is arranged on a fourth connecting pipeline between the heat collecting water tank and the high-temperature hot water tank, and the fifth electromagnetic valve is arranged on the low-temperature hot water tank water outlet pipeline, the sixth electromagnetic valve is arranged on the temperature-regulating water tank water outlet pipeline, the low-temperature hot water tank water outlet pipeline and the temperature-regulating water tank water outlet pipeline are merged into a constant-temperature water pipeline, the constant-temperature water pipeline is connected with the temperature-regulating water tank, and the constant-temperature water pipeline is provided with the seventh electromagnetic valve, the eighth electromagnetic valve, the ninth electromagnetic valve, the tenth electromagnetic valve and a fourth water pump.
6. The system for preparing constant temperature water by solar energy according to claim 1, characterized in that: a return pipe is arranged between the temperature regulating water tank and the heat collecting water tank, and a return pipe is arranged between the heat collecting water tank and the high-temperature hot water tank.
7. The system for preparing constant temperature water by solar energy according to claim 1, characterized in that: the heat collector adopts a silicon-boron vacuum heat collecting tube for heat collection, and a superconductive copper rod is arranged in the silicon-boron vacuum heat collecting tube as a heat conductor.
8. A control method of a solar energy preparation constant temperature water system is characterized by comprising the following operation steps: firstly, a controller controls a solenoid valve system and a pump system to supplement water for a heat collecting water tank, then the controller controls the pump system to input cold water in the heat collecting water tank into a heat collector to exchange heat, heated high-temperature hot water flows back to the heat collecting water tank, then the controller controls the pump system to input high-temperature hot water in the heat collecting water tank into a temperature regulating water tank, meanwhile, the controller controls the solenoid valve system to input cold water into the temperature regulating water tank to regulate the temperature, then the controller controls the solenoid valve system or the pump system to input low-temperature hot water into a low-temperature hot water tank for standby, in the process, the temperature of the temperature regulating water tank and the temperature of the low-temperature hot water tank are regulated to be within a usable low-temperature hot water temperature range, finally, the controller controls the solenoid valve system and the pump system to convey prepared low-temperature hot water from the low-temperature hot water tank or the temperature regulating water tank to a user faucet, and the high, and is recycled through an electromagnetic valve system under the control of the controller.
9. The control method of the solar energy preparation constant temperature water system according to claim 8, characterized in that: the controller operates according to a set program when controlling the pump system and the solenoid valve system, and the reference parameters are provided by a water level sensor and a temperature sensor in the system when operating the program.
10. The method for controlling a solar energy thermostatic water system according to any one of claim 8 or claim 9, wherein: the controller controls the electric shading net to shade the heat collector according to the temperature or liquid level conditions in the temperature-adjusting water tank, the high-temperature hot water tank, the low-temperature hot water tank and the heat collecting water tank.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111623533A (en) * | 2020-06-23 | 2020-09-04 | 韩小翁 | High-efficiency, quick-heating, energy-saving, clutch type solar water heater |
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Application publication date: 20200107 |