CN114738819A - Solar energy and two-combined-supply coupling system and control method thereof - Google Patents
Solar energy and two-combined-supply coupling system and control method thereof Download PDFInfo
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- CN114738819A CN114738819A CN202210428331.XA CN202210428331A CN114738819A CN 114738819 A CN114738819 A CN 114738819A CN 202210428331 A CN202210428331 A CN 202210428331A CN 114738819 A CN114738819 A CN 114738819A
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- preservation water
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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
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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
- F24D2200/00—Heat sources or energy sources
- F24D2200/14—Solar energy
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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
Abstract
The invention relates to a hot water system, in particular to a solar energy and two-combined-supply coupling system and a control method thereof. In order to achieve the purpose, the invention adopts the following technical scheme: the solar water heater comprises a solar system, a two-combined-supply system, a heat-preservation water tank, a first circulating pump, a second circulating pump, a water flow switch and a photosensitive switch; among the above-mentioned technical scheme, with solar energy system and two allies oneself with the coupling of confession system, make two systems respectively can constitute the return circuit with the holding water tank, be convenient for heat the water in the holding water tank. The two systems are organically combined, complement each other, make good use of the advantages and avoid the disadvantages, enable the whole system to operate in an energy-saving and maximized mode, solve the problem that the solar system is easily affected by the weather, and stop the operation of the two combined supply systems after the required temperature is reached.
Description
Technical Field
The invention relates to a hot water system, in particular to a solar energy and two-combined-supply coupling system and a control method thereof.
Background
Solar energy and two confession products are as a low carbon energy-conserving product, are prepared in the aspect of heating and life system hot water and are favored by the market, but do not accomplish the energy-conserving maximize in the true sense because of its self restriction, mainly have as following problem:
firstly, in cloudy days or in days with insufficient sunlight, a solar water heater has low water heating efficiency and even does not produce hot water, sometimes extra pure electric heating is needed to produce the hot water, and real low-carbon energy conservation cannot be realized;
secondly, in a scene with high hot water use demand, the solar water heater cannot provide timely and abundant hot water in a short time;
the two-combined-supply system absorbs heat from the air to realize hot water production by relying on a small amount of electric energy as auxiliary power, and the hot water demand is realized by depending on the electric energy without practical limitation of external factors, so that the energy conservation maximization is not realized;
and fourthly, the two-combined-supply system can start to produce hot water even if no hot water using requirement exists after the water temperature of the system is reduced due to the control reason, so that extra electric energy is wasted.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a solar energy and two-combined-supply coupling system and a control method thereof, which organically couple the solar energy and the two-combined-supply system, thereby not only solving the use limitation of the solar water heater, but also reducing the extra power consumption of the two-combined-supply system, and reasonably and orderly matching the two systems according to the actual use scenario, thereby achieving the maximum energy saving.
In order to achieve the purpose, the invention adopts the following technical scheme: the solar water heater comprises a solar system, a two-combined-supply system, a heat-preservation water tank, a first circulating pump, a second circulating pump, a water flow switch and a photosensitive switch; wherein the content of the first and second substances,
the two-combined-supply system is provided with a first outlet end and a first inlet end;
a second outlet end and a second inlet end are arranged on the solar system;
the heat preservation water tank is provided with a first port which is communicated with first outlet ends of the two combined supply systems through a first pipeline, a second port which is communicated with first inlet ends of the two combined supply systems through a second pipeline, a third port which is communicated with a second outlet end of the solar energy system through a third pipeline, a fourth port which is communicated with a second inlet end of the solar energy system through a fourth pipeline, and a fifth port which is connected with a water outlet end of the heat preservation water tank through a fifth pipeline;
the first circulating pump is arranged on the fourth pipeline;
the second circulating pump is arranged on the second pipeline;
the water flow switch is arranged on the fifth pipeline;
and the photosensitive switch is arranged on the solar system.
Among the above-mentioned technical scheme, with solar energy system and two allies oneself with the coupling of confession system, make two systems respectively can constitute the return circuit with the holding water tank, be convenient for heat the water in the holding water tank.
A control method of a solar energy and two-combined-supply coupling system is characterized in that the set temperature of a heat-preservation water tank is set to be T1, the required temperature is T2, and the instant temperature is T0;
when the temperature T0 of holding water box is less than T1, the photosensitive switch is closed, and the water flow switch is disconnected or the water flow switch is closed in a short time, then first circulating pump is opened, and solar energy system begins to heat the water in the holding water box, and when the temperature T0 of holding water box is more than or equal to T2, then first circulating pump is closed, and solar energy system stops heating the water in the holding water box.
Among the above-mentioned control scheme, photosensitive switch is closed, and both sunshine is abundant, and water flow switch disconnection or water flow switch are closed in the short time, both do not have the hot water demand, or the hot water demand is very little, and both short time water use, temperature T0 when holding water box < T1, after the temperature reduction, then only need open first circulating pump, can satisfy user's user demand with the water heating of solar energy system in to holding water box.
Preferably, when the temperature of the heat preservation water tank is T0 < T1, the light-sensitive switch is closed, the water flow switch is closed for a long time, and meanwhile, the water flow switch is closed
If the temperature of the heat-preservation water tank in unit time is reduced slowly, the first circulating pump is started, and the solar energy system starts to heat water in the heat-preservation water tank; when the temperature T0 of the heat preservation water tank is larger than or equal to T2, the first circulating pump is turned off, and the solar energy system stops heating the water in the heat preservation water tank.
If the temperature of the heat-preservation water tank in unit time is decreased quickly, the first circulating pump and the second circulating pump are both started, and the solar energy system and the two combined supply systems simultaneously start to heat water in the heat-preservation water tank; when the temperature T0 of the heat-preservation water tank is not less than T2, the first circulating pump and the second circulating pump are both closed, and the solar energy system and the two combined supply system stop heating the water in the heat-preservation water tank.
In the control scheme, the photosensitive switch is closed, so that the sunlight is abundant, the water flow switch is closed for a long time, so that the hot water needs to be used for a long time, and the demand of the hot water is large. When the temperature T0 of holding water box is less than T1, and if the speed that the temperature of water descends is slow this moment, then open first circulating pump, heat the long-time user demand that can satisfy the user with solar energy system to the water in the holding water box. If the water temperature is decreased quickly, the continuous supply of hot water cannot be maintained only by the heating of the solar energy system, so the first circulating pump and the second circulating pump need to be started simultaneously, and the solar energy system and the two-joint supply system are used for heating the water in the heat preservation water tank simultaneously.
Preferably, when the temperature T0 of the heat preservation water tank is less than T1, the photosensitive switch is switched off, the water flow switch is switched off or the water flow switch is switched on in a short time; or
When the temperature T0 of the heat preservation water tank is less than T1, the photosensitive switch is switched off, the water flow switch is switched on for a long time, and the temperature of the heat preservation water tank in unit time is reduced quickly;
and the second circulating pump is turned on, the two combined supply systems start to heat the water in the heat-preservation water tank, when the temperature T0 of the heat-preservation water tank is not less than T2, the first circulating pump is turned off, and the two combined supply systems stop heating the water in the heat-preservation water tank.
In the technical scheme, the photosensitive switch is switched off, the sunlight is not abundant at the moment, the solar system cannot heat the water in the heat-preservation water tank, when the temperature T0 of the heat-preservation water tank is less than T1, no matter the hot water demand is small or the hot water demand is large, the second circulating pump can be switched on, and the two-combined-supply system is used for heating the water in the heat-preservation water tank.
The invention adopts the technical scheme that the solar combined system consists of a solar system and two combined supply systems, the two systems are organically combined and mutually complemented, the advantages and the disadvantages are raised, the energy-saving maximum operation of the whole system is realized, the problem that the solar system is easily influenced by weather is solved, the operation of the two combined supply systems can be stopped after the required temperature is reached, and the following problems are specifically solved:
the defects that the solar water heater system is low in hot water making efficiency in cloudy days or under the scene of insufficient sunlight, and even cannot make hot water are overcome;
the defect that the solar water heater system cannot provide timely and abundant hot water in a short time in a scene with high hot water use requirement is overcome;
and the defect that the water heating system is still started to produce hot water without hot water requirement and extra electric energy is wasted after the water temperature of the water system is reduced in the two-combined-supply system is solved.
Drawings
Fig. 1 is a system diagram of a solar and two-cogeneration coupling system.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The solar energy and two-combined-supply coupling system shown in fig. 1 comprises a solar energy system 1, a two-combined-supply system 2, a heat preservation water tank 3, a first circulating pump 4, a second circulating pump 5, a water flow switch 6 and a photosensitive switch 7; wherein the content of the first and second substances,
the two-combined-supply system 2 is provided with a first outlet end 8 and a first inlet end 9;
a second outlet end 10 and a second inlet end 11 are arranged on the solar system 1;
the heat preservation water tank 3 is provided with a first port 12 which is communicated with a first outlet end 8 of the two-combined-supply system 2 through a first pipeline 101, a second port 13 which is communicated with a first inlet end 9 of the two-combined-supply system 2 through a second pipeline 102, a third port 14 which is communicated with a second outlet end 10 of the solar system 1 through a third pipeline 103, a fourth port 15 which is communicated with a second inlet end 11 of the solar system 1 through a fourth pipeline 104, and a fifth port 15 which is connected with a water outlet end 16 of the heat preservation water tank 3 through a fifth pipeline 105;
a first circulation pump 4 disposed on the fourth pipe 104;
a second circulation pump 5 provided on the second pipe 102;
a water flow switch 6 disposed on the fifth pipe 105;
and the photosensitive switch 7 is arranged on the solar system 1.
Among the above-mentioned technical scheme, with solar energy system 1 and the 2 couplings of two confession systems that ally oneself with, make two systems respectively can constitute the return circuit with holding water box 3, be convenient for heat the water in the holding water box 3.
A control method of a solar energy and two-combined-supply coupling system is characterized in that the set temperature of a heat-preservation water tank 3 is set to be T1, the required temperature is T2, and the instant temperature is T0;
when the temperature T0 of the heat preservation water tank 3 is less than T1, the photosensitive switch is closed, the water flow switch 6 is disconnected or the water flow switch 6 is closed in a short time, the first circulating pump 4 is opened, the solar energy system 1 starts to heat the water in the heat preservation water tank 3, when the temperature T0 of the heat preservation water tank 3 is more than or equal to T2, the first circulating pump 4 is closed, and the solar energy system 1 stops heating the water in the heat preservation water tank 3.
Among the above-mentioned control scheme, photosensitive switch 7 is closed, and both sunshine is abundant, and water flow switch 6 disconnection or water flow switch 6 short time internal closure not only do not have the hot water demand, or the hot water demand is very little, both short time water, temperature T0 when holding water box 3 < T1, after the temperature reduces, then only need open first circulating pump 4, can satisfy user's user demand with the water heating of solar energy system 1 in to holding water box 3.
It should be noted that, because there is no hot water demand or there is little hot water demand, the instant temperature T0 may be a little lower in demand than T1, i.e. assuming that the temperature T1 is set to 50 °, the instant temperature T0 may be less than or equal to 45 °, and the solar system 1 starts to heat the water system. Although T0 is also within < 50 deg., temperature T0 is less than 50 deg. and heating is resumed.
Further, when the temperature T0 of the heat preservation water tank 3 is less than T1, the light-sensitive switch 7 is closed, the water flow switch 6 is closed for a long time, and meanwhile, the temperature T0 of the heat preservation water tank is lower than T1
If the temperature of the heat-preservation water tank 3 in unit time is reduced slowly, the first circulating pump 4 is started, and the solar system 1 starts to heat the water in the heat-preservation water tank 3; when the temperature T0 of the heat-preservation water tank 3 is not less than T2, the first circulation pump 4 is turned off, and the solar energy system 1 stops heating the water in the heat-preservation water tank 3.
If the temperature of the heat-preservation water tank 3 in unit time drops quickly, the first circulating pump 4 and the second circulating pump 5 are both started, and the solar energy system 1 and the two combined supply system 2 start to heat water in the heat-preservation water tank 3 at the same time; when the temperature T0 of the heat-preservation water tank 3 is not less than T2, the first circulating pump 4 and the second circulating pump 5 are both turned off, and the solar energy system 1 and the two-combined-supply system 2 stop heating the water in the heat-preservation water tank 3.
In the control scheme, the photosensitive switch 7 is closed, which indicates that the sunlight is abundant, and the water flow switch 6 is closed for a long time, which indicates that the hot water needs to be used for a long time, so that the demand of the hot water is large. When the temperature T0 of holding water tank 3 is less than T1, and if the speed that the temperature of water descends is slow at this moment, then open first circulating pump 4, heat the long-time user demand that can satisfy the user with solar energy system 1 to the water in holding water tank 3. If the water temperature drops rapidly, the continuous supply of hot water cannot be maintained only by heating the solar system 1, and therefore, the first circulation pump 4 and the second circulation pump 5 need to be turned on simultaneously, and the solar system 1 and the two-combined-supply system 2 are used to heat the water in the hot water tank 3 simultaneously.
Further, when the temperature T0 of the heat preservation water tank 3 is less than T1, the photosensitive switch is switched off, the water flow switch 6 is switched off or the water flow switch 6 is switched on in a short time; or
When the temperature T0 of the heat preservation water tank 3 is less than T1, the photosensitive switch is switched off, the water flow switch 6 is switched on for a long time, and the temperature of the heat preservation water tank 3 in unit time is reduced quickly;
the second circulating pump 5 is turned on, the two-combined-supply system 2 starts to heat the water in the heat-preservation water tank 3, when the temperature T0 of the heat-preservation water tank 3 is not less than T2, the first circulating pump 4 is turned off, and the two-combined-supply system 2 stops heating the water in the heat-preservation water tank 3.
In the above technical solution, the photosensitive switch 7 is turned off, and at this time, sunlight is not abundant, the solar energy system 1 cannot heat the water in the heat-insulating water tank 3, and when the temperature T0 of the heat-insulating water tank 3 is less than T1, no matter the hot water demand is small or the hot water demand is large, the second circulation pump 5 can only be turned on, and the two-combined-supply system 2 is used to heat the water in the heat-insulating water tank 3.
It should be noted here that, in the case of no hot water demand or a small hot water demand, the instant temperature T0 may be a little lower than T1 in demand, i.e. assuming that the set temperature T1 is 50 ° and the instant temperature T0 may be 45 ° or less, the two-combined system 1 starts heating the water system. Although T0 is also within < 50 deg., temperature T0 is less than 50 deg. and heating is resumed.
In this embodiment, a solar energy and two-cogeneration coupling system and a control method thereof are used, the scheme is composed of a solar energy system 1 and two-cogeneration system 2, the two systems are organically combined, complementary to each other, and make good use of advantages and disadvantages, so that the whole system can operate in an energy-saving and maximized manner, the problem that the solar energy system 1 is susceptible to weather is solved, and the operation of the two-cogeneration system 2 can be stopped after the required temperature is reached, which specifically solves the following problems:
the defects that the solar water heater system is low in hot water making efficiency in cloudy days or under the scene of insufficient sunlight, and even cannot make hot water are overcome;
the defect that timely and abundant hot water cannot be provided in a short time in a scene with high hot water use requirement of a solar water heater system is overcome;
and the defect that the water heating system is still started to produce hot water without hot water requirement and extra electric energy is wasted after the water temperature of the water system is reduced in the two-combined-supply system is solved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.
Claims (4)
1. A solar energy and two ally oneself with confession coupled system which characterized in that: the solar energy heat-preservation water-cooling system comprises a solar energy system (1), a two-combined-supply system (2), a heat-preservation water tank (3), a first circulating pump (4), a second circulating pump (5), a water flow switch (6) and a photosensitive switch (7); wherein the content of the first and second substances,
the two combined supply systems (2) are provided with a first outlet end (8) and a first inlet end (9);
a second outlet end (10) and a second inlet end (11) are arranged on the solar system (1);
the heat preservation water tank (3) is provided with a first port (12) which is communicated with a first outlet end (8) of the two combined supply systems (2) through a first pipeline (101), a second port (13) which is communicated with a first inlet end (9) of the two combined supply systems (2) through a second pipeline (102), a third port (14) which is communicated with a second outlet end (10) of the solar system (1) through a third pipeline (103), a fourth port (15) which is communicated with a second inlet end (11) of the solar system (1) through a fourth pipeline (104), and a fifth port (15) which is connected with a water outlet end (16) of the heat preservation water tank (3) through a fifth pipeline (105);
a first circulation pump (4) arranged on the fourth conduit (104);
a second circulation pump (5) arranged on the second conduit (102);
a water flow switch (6) arranged on the fifth pipeline (105);
a light sensitive switch (7) arranged on the solar system (1).
2. A control method of a solar energy and two-combined-supply coupling system is characterized by comprising the following steps: setting the set temperature of the heat preservation water tank (3) to be T1, the required temperature to be T2 and the instant temperature to be T0;
when the temperature T0 of the heat preservation water tank (3) is less than T1, the photosensitive switch (7) is closed, the water flow switch (6) is disconnected or the water flow switch (6) is closed in a short time, the first circulating pump (4) is opened, the solar energy system (1) starts to heat water in the heat preservation water tank (3), when the temperature T0 of the heat preservation water tank (3) is more than or equal to T2, the first circulating pump (4) is closed, and the solar energy system (1) stops heating water in the heat preservation water tank (3).
3. The method of claim 2 for controlling a solar and cogeneration coupling system, wherein the method comprises: when the temperature T0 of the heat preservation water tank (3) is less than T1, the light-sensitive switch (7) is closed, the water flow switch (6) is closed for a long time, and meanwhile
If the temperature of the heat-preservation water tank (3) in unit time is reduced slowly, the first circulating pump (4) is turned on, and the solar system (1) starts to heat water in the heat-preservation water tank (3); when the temperature T0 of the heat-preservation water tank (3) is more than or equal to T2, the first circulating pump (4) is turned off, and the solar energy system (1) stops heating the water in the heat-preservation water tank (3).
If the temperature of the heat-preservation water tank (3) drops quickly in unit time, the first circulating pump (4) and the second circulating pump (5) are both started, and the solar energy system (1) and the two combined supply system (2) start to heat water in the heat-preservation water tank (3) at the same time; when the temperature T0 of the heat-preservation water tank (3) is not less than T2, the first circulating pump (4) and the second circulating pump (5) are both closed, and the solar energy system (1) and the two-combined-supply system (2) stop heating the water in the heat-preservation water tank (3).
4. The method of claim 2 for controlling a solar and cogeneration coupling system, wherein the method comprises: when the temperature T0 of the heat preservation water tank (3) is less than T1, the photosensitive switch (7) is switched off, the water flow switch (6) is switched off or the water flow switch (6) is switched on in a short time; or
When the temperature T0 of the heat preservation water tank (3) is less than T1, the photosensitive switch (7) is switched off, the water flow switch (6) is switched on for a long time, and the temperature of the heat preservation water tank (3) in unit time is reduced quickly;
the second circulating pump (5) is turned on, the two combined supply systems (2) start to heat the water in the heat-preservation water tank (3), when the temperature T0 of the heat-preservation water tank (3) is not less than T2, the first circulating pump (4) is turned off, and the two combined supply systems (2) stop heating the water in the heat-preservation water tank (3).
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