CN112361622A - Heating, refrigerating and hot water supply system using composite energy and control method thereof - Google Patents
Heating, refrigerating and hot water supply system using composite energy and control method thereof Download PDFInfo
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- CN112361622A CN112361622A CN202011404055.0A CN202011404055A CN112361622A CN 112361622 A CN112361622 A CN 112361622A CN 202011404055 A CN202011404055 A CN 202011404055A CN 112361622 A CN112361622 A CN 112361622A
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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
- F24D3/00—Hot-water central heating systems
- F24D3/02—Hot-water central heating systems with forced circulation, e.g. by pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/18—Hot-water central heating systems using heat pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
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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
- 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
- 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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
- F24F2005/0064—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground using 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02A30/272—Solar heating or cooling
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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
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/12—Hot water central heating systems using heat pumps
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Thermal Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
The invention discloses a heating, refrigerating and hot water supply system utilizing composite energy and a control method thereof, wherein the heating, refrigerating and hot water supply system comprises a water supplementing unit, a heat collecting water tank, a solar heating circulating system, a water using tail end circulating system and an air source heat pump hot water unit with total heat recovery, the air source heat pump hot water unit is connected with an air source cold/hot water module unit in parallel, the air source heat pump hot water unit and the air source cold/hot water module unit form a loop with the indoor tail end through a water inlet pipe and a water return pipe respectively, a water level sensor and a temperature sensor which are connected with a control system are arranged in the heat collecting water tank, and the control. The solar energy, air source heat pump and total heat recovery technology form an organic multi-energy complementary device through the heat collecting water tank and the perfect control system, the defect that the solar water heater cannot supply hot water at any time due to the influence of weather environment is overcome, and three living requirements of people on refrigeration, heating and living hot water are met.
Description
Technical Field
The invention relates to the technical field of comprehensive utilization of air conditioner energy, in particular to a heating, refrigerating and hot water supply system utilizing composite energy and a control method thereof.
Background
At present, the world is short of energy sources, and new energy sources capable of being developed and utilized are: compared with the development of solar energy, nuclear energy, wind energy, geothermal energy and the like, the development of the solar energy not only has simple technology and investment saving, but also is inexhaustible clean energy which is pollution-free and can be used for a long time. The solar energy is utilized to produce hot water in the civil aspect, so that the solar energy hot water can be used for daily life and can also provide low-temperature hot water for production for industry and agriculture. The development and application of the solar water heater are quite fast in China in recent years, and the solar water heater is changed from an early simple closed sunning type to a corrugated type, an aluminum wing type and a flat plate type, is developed to the high-performance heat pipe vacuum pipe and a glass vacuum pipe of the present, and makes the family of the water heater complete continuously.
In order to solve the problem of freezing in winter, the anti-icing/anti-freezing technology of the water heater is developed, so that the solar water heater can be used all the year round in the south and can also be used all the year round in the northern cold regions. In order to ensure the use effect under the severe environment, an electric heating pipe is additionally arranged in the water tank as an auxiliary heat source, but the extensive mode of the electric heating pipe limits the use and popularization of the solar technology in large-scale projects, and the electric heating pipe runs counter to the energy conservation and emission reduction advocated by the state.
An air source heat pump hot water unit is also a domestic hot water supply system which is increasingly frequently used in recent years. The heat pump principle is applied, a small part of electric energy is consumed to drive the unit to operate, and low-grade heat energy which is not easy to utilize in the air can be converted into high-grade heat energy which is easy to utilize, so that domestic hot water with the temperature of 55 ℃ at most can be prepared. As a water heating device which is energy-saving and efficient and has no pollution to the environment, the air source heat pump water heating unit has been widely applied to collective water consumption units such as hotels, sauna centers, hospitals, factories, dormitories and residential districts and small water consumption units such as villas, families and beauty salons in recent years. Although the air source heat pump hot water unit has the advantage of energy saving with other electric heating or fuel heating equipment, the electric energy is still used for heating. And the air source heat pump hot water unit is used for preparing hot water independently, and cannot be fully utilized.
Therefore, the energy-saving effect of the solar water heater or the air source heat pump water heater unit is still to be improved; and the heat source of the existing air conditioning system is not utilized during refrigeration, and the external environment temperature is further increased, so that the energy is wasted, and the environment is not facilitated.
Disclosure of Invention
Aiming at the defects in the background technology, the invention provides a heating, refrigerating and hot water supply system utilizing composite energy and a control method thereof, and solves the technical problems of poor energy-saving effect of the existing water heater and low energy utilization rate during air conditioning and refrigeration.
The technical scheme of the invention is realized as follows: a heating, refrigerating and hot water supply system utilizing composite energy comprises a heat collecting water tank connected with a water supplementing unit, the heat collecting water tank is connected with a solar heating circulation system and a water end circulation system, the heat collecting water tank is connected with an air source heat pump hot water unit with total heat recovery, the air source heat pump hot water unit is connected with an air source cold/hot water module unit in parallel, the air source heat pump hot water unit and the air source cold/hot water module unit form a loop through a water inlet pipe and a water return pipe respectively, a water separator and a water collector are arranged between the water inlet pipe and the water return pipe, a floor heating water pipe system, an indoor air conditioner end and an indoor combined air treatment unit are connected between the water separator and the water collector, a water level sensor and a temperature sensor connected with a control system are arranged in the heat collecting water tank, the air source heat pump hot water unit, the air source cold/hot water module unit, the floor heating pipe system, the indoor side air conditioner tail end, the indoor side combined air treatment unit and the water tail end circulating system are connected.
Further, solar heating circulation system includes solar panel, and solar panel passes through solar energy inlet tube and solar energy outlet pipe and links to each other with the hot water collecting tank, and solar energy inlet tube or solar energy outlet pipe are connected with the solar energy circulating pump, control system links to each other with the solar energy circulating pump.
Further, the solar heating cycle system comprises a plurality of solar parallel units, and each solar parallel unit comprises a plurality of solar panels connected in series.
Furthermore, the air source heat pump hot water unit is connected with the heat collection water tank through a heat pump water inlet pipe and a heat pump water outlet pipe, the heat pump water inlet pipe or the heat pump water outlet pipe is connected with a heat pump circulating pump, and the control system is connected with the heat pump circulating pump and the air source heat pump hot water unit.
Furthermore, the air source heat pump hot water unit and the air source cold/hot water module unit are provided with a plurality of units, the water inlet end of each air source heat pump hot water unit is connected with the heat pump water inlet pipe, and the water outlet end of each air source heat pump hot water unit is connected with the heat pump water outlet pipe; and a heat pump water inlet valve connected with the control system is arranged between the heat pump circulating pump and the heat collecting water tank.
Furthermore, the water end circulating system comprises an end circulating unit, the end circulating unit is connected with the heat collecting water tank through an end water inlet pipe and an end water return pipe, the end water inlet pipe is provided with a silver ion disinfection filtering device, the end water inlet pipe or the end water return pipe is connected with an end circulating pump, and the control system is connected with the end circulating pump; and unit valves connected with the control system are arranged between the tail end circulating unit and the tail end water inlet pipe and between the tail end circulating unit and the tail end water return pipe, tail end water inlet valves connected with the control system are arranged on the tail end water inlet pipes, and tail end water return valves connected with the control system are arranged on the tail end water return pipes.
Further, the heat collection water tank comprises a heating water tank and a constant temperature water tank which are communicated, the solar water inlet pipe, the solar water outlet pipe, the heat pump water inlet pipe and the heat pump water outlet pipe are connected with the heating water tank, and the tail end water inlet pipe and the tail end water return pipe are connected with the constant temperature water tank.
A control method of a heating, refrigerating and hot water supply system using a composite energy source includes the following operation modes:
(1) in summer and sunshine: when refrigeration is not needed indoors, the control system controls the solar heating circulation system to be started preferentially to supply hot water; when the indoor needs to be refrigerated, the control system controls the air source heat pump hot water unit to be started preferentially, and when the indoor needs to be refrigerated, redundant heat is recovered freely to prepare domestic hot water and is stored in a constant temperature water tank according to the set water temperature;
(2) in rainy days and winter: when the solar heating circulation system cannot completely meet the requirement of domestic hot water supply, the control system firstly controls the solar heating circulation system to be started preferentially to raise the water temperature in the heating water tank, then controls the air source heat pump hot water unit to heat the hot water in the heating water tank to 55 ℃, and then conveys the hot water at 55 ℃ from the heating water tank to the constant temperature water tank; the control system controls the air source cold/hot water module unit to perform heating in winter;
(3) in transitional season and sunshine days: the control system controls the solar heating circulation system and the air source heat pump hot water unit to synchronously supply hot water, or adopts the same hot water supply mode as that in rainy days and winter.
The hot water supply process comprises the following stages:
the system start phase: the control system receives monitoring data of the water level sensor in real time, and when the water level in the heat collection water tank is lower than the lower limit water level, the control system controls a water replenishing valve of the water replenishing unit to be opened to replenish water; when the water level of the heat collection water tank is higher than the lower limit water level, the control system controls a heat pump water inlet valve, a heat pump circulating pump and an air source heat pump hot water unit to be opened, or controls a solar water inlet valve and a solar circulating pump to be opened to heat water in the heat collection water tank; when the water level of the heat collection water tank reaches the upper limit water level, the control system controls the water replenishing valve to be closed; when the water in the heat collection water tank is heated to a set temperature, the control system controls the solar heating circulation system and the air source heat pump hot water unit to stop running.
And (3) a system constant temperature stage: when hot water in the heat collection water tank is not used for a long time, the control system can control a water inlet valve of the heat pump, a heat pump circulating pump and an air source heat pump hot water unit to be opened according to self-set water temperature, for example, the water temperature is lower than 50 ℃, so that water in the heat collection water tank is heated, and the operation is stopped until the water temperature in the heat collection water tank is increased to 55 ℃; in the process, the solar heating circulation system heats the solar heating circulation system at the same time.
The system directly heats stage: in the water use period, hot water already stored in the water collection tank is preferentially used; when the water quantity is insufficient, the air source heat pump hot water unit and the solar heating circulation system are controlled to run in a direct heating mode for supplement.
A system water supply stage: the control system controls the tail end circulating pump to continuously run at low frequency, water stored in the tail end water inlet pipe, the tail end water return pipe and the tail end circulating unit is returned to the heat collecting water tank to be mixed with hot water, the tail end circulating pump is controlled by the node pressure gauge and the frequency converter, water supply pressure can be set as required, and water consumption point water pressure is guaranteed to be constant.
Furthermore, the control system controls the opening and closing of the unit valve, and further controls each tail end circulation unit to independently operate.
Under the large background of utilizing clean energy, the solar energy, the air source heat pump and the total heat recovery technology form an organic multi-energy complementary device through the heat collection water tank and the perfect control system, the solar energy and the air source heat pump are combined for use, the defect that the solar water heater cannot ensure hot water supply at any time due to the influence of weather environment is overcome, three living requirements of people on refrigeration, heating and living hot water are met, the purposes of energy conservation and emission reduction are taken, the unique advantages of 'safety, money saving, comfort and environmental protection' are embodied, the expectation of people on increasingly growing quality life is met, and the national policy call is responded. The solar energy and air source heat pump hot water unit with the total heat recovery function can refrigerate in summer and can prepare domestic hot water freely, and the solar energy and air source heat pump hot water unit has three purposes. The air source heat pump hot water unit has the instant hot water supply capacity of a directly-heated unit and the standby hot water supply capacity of a circulating unit, can meet the requirements of domestic hot water in different periods, can directly prepare domestic hot water at 55 ℃ in a water consumption peak period, and can respond to any sudden situation at any time. Domestic hot water is supplied and circularly supplied between the tail end and the constant-temperature water tank through the tail end circulating pump and the silver ion disinfection and filtration device, so that the hot water supply mode of instant use and instant use is ensured. Compared with the traditional scheme of solar energy, water-cooling screw rods, boilers or electric heating, the solar water-cooling screw rod heating system saves considerable cost for the whole project, has more remarkable energy-saving effect, and meets the requirements of low energy consumption and high comfort in home and office work. The invention can be widely applied to the fields of home villas, residential district matching, school dormitory buildings, hotels and the like with comprehensive requirements on air conditioning cold water, heating and domestic hot water.
Drawings
In order to illustrate the embodiments of the invention more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are only some embodiments of the invention, and that other drawings may be derived from those drawings by a person skilled in the art without inventive effort.
Fig. 1 is a schematic diagram of the principle of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
Embodiment 1, a heating, refrigeration and hot water supply system using composite energy, as shown in fig. 1, includes a heat collecting water tank connected with a water supply unit 2, the heat collecting water tank is connected with a solar heating circulation system and a water end circulation system, the heat collecting water tank is connected with an air source heat pump hot water unit 51 with total heat recovery, the air source heat pump hot water unit 51 is connected in parallel with an air source cold/hot water module unit 7, the air source heat pump hot water unit 51 and the air source cold/hot water module unit 7 form a loop through a water inlet pipe 71 and a water return pipe 72, and the circulation is realized through a circulation pump 75. A water separator 73 and a water collector 74 are arranged between the water inlet pipe 71 and the water return pipe 72, and a floor heating pipe system, the tail end of an indoor air conditioner and an indoor combined air treatment unit are connected between the water separator 73 and the water collector 74.
The air source heat pump hot water unit 51 and the air source cold/hot water module unit 7 refrigerate in summer, and the air source heat pump hot water unit 51 heats water in the heat collecting water tank through full heat recovery circulation so as to make up for the defect that a solar heating circulation system is limited by environment and places.
A water level sensor 11 and a temperature sensor 12 which are connected with a control system 3 are arranged in the heat collection water tank, and the control system 3 is connected with a water supplementing unit 2, a solar heating circulating system, an air source heat pump hot water unit 51, an air source cold/hot water module unit 7, a floor heating water pipe system, an indoor air conditioner terminal, an indoor combined air treatment unit and a water terminal circulating system. The control system 3 can control the water replenishing unit 2 to replenish water in real time through the water level sensor 11 and the temperature sensor 12, control the air source heat pump hot water unit 51 and the air source cold/hot water module unit 7 to refrigerate and heat, and control the air source heat pump hot water unit 51 and the solar heating circulation system to heat hot water.
The solar heating circulating system comprises a solar panel 41, the solar panel 41 is connected with the heat collecting water tank through a solar water inlet pipe 42 and a solar water outlet pipe 43, and the solar water inlet pipe 42 is connected with a solar circulating pump 44. The control system 3 is connected with the solar circulating pump 44, and the control system 3 controls the solar circulating pump 44 to circularly heat the water in the heat collecting water tank. The solar heating circulation system comprises a plurality of solar parallel units, each solar parallel unit comprises a plurality of solar panels 41 connected in series, and heating efficiency is fully guaranteed.
The air source heat pump hot water unit 51 is connected with the heat collecting water tank through a heat pump water inlet pipe 52 and a heat pump water outlet pipe 53, the heat pump water inlet pipe 52 is connected with a heat pump circulating pump 54, and the control system 3 is connected with the heat pump circulating pump 54 and the air source heat pump hot water unit 51. The air source heat pump hot water unit 51 and the air source cold/hot water module unit 7 are provided with a plurality of units, the water inlet end of each air source heat pump hot water unit 51 is connected with the heat pump water inlet pipe 52, and the water outlet end is connected with the heat pump water outlet pipe 53. A heat pump water inlet valve 55 connected with the control system 3 is arranged between the heat pump circulating pump 54 and the heat collecting water tank.
The water end circulation system comprises an end circulation unit 61, the end circulation unit 61 is connected with the heat collecting water tank through an end water inlet pipe 62 and an end water return pipe 63, and the end water inlet pipe 62 is provided with a silver ion disinfection and filtration device 68. The tail end water inlet pipe 62 is connected with a tail end circulating pump 64, and the control system 3 is connected with the tail end circulating pump 64. The tail end water inlet pipes 62 are provided with tail end water inlet valves 66 connected with the control system 3, and the tail end water return pipes 63 are provided with tail end water return valves 67 connected with the control system 3. A unit valve 65 connected with the control system 3 is arranged between the tail end circulating unit 61 and the tail end water inlet pipe 62 and between the tail end water return pipe 63.
The heat collecting water tank comprises a heating water tank 101 and a constant temperature water tank 102 which are communicated, the solar water inlet pipe 42, the solar water outlet pipe 43, the heat pump water inlet pipe 52 and the heat pump water outlet pipe 53 are connected with the heating water tank 101, and the tail end water inlet pipe 62 and the tail end water return pipe 63 are connected with the constant temperature water tank 102.
Embodiment 2, a method for controlling a heating, cooling and hot water supply system using a hybrid energy source, comprising the following operation modes:
(1) in summer and sunshine: when refrigeration is not needed indoors, the control system 3 controls the solar heating circulation system to be started preferentially to supply hot water; when the indoor needs to be refrigerated, the control system 3 preferentially starts the air source heat pump hot water unit 51, recovers redundant heat for free to prepare domestic hot water while refrigerating the indoor, and stores the heat in the constant temperature water tank 102 according to the set water temperature;
(2) in rainy days and winter: when the solar heating circulation system cannot completely meet the requirement of domestic hot water supply, the control system 3 firstly controls the solar heating circulation system to be started preferentially to raise the water temperature in the heating water tank 101, then the control system 3 controls the air source heat pump hot water unit 51 to heat the hot water in the heating water tank 101 to 55 ℃, and then the hot water at 55 ℃ is conveyed into the constant temperature water tank 102 from the heating water tank 101; the control system 3 controls the air source cold/hot water module unit 7 to perform heating in winter;
(3) in transitional season and sunshine days: the control system 3 controls the solar heating circulation system and the air source heat pump hot water unit 51 to synchronously supply hot water, or adopts the same hot water supply mode as that in rainy days and winter.
The hot water supply process comprises the following stages:
the system start phase: the control system 3 receives monitoring data of the water level sensor 11 in real time, and when the water level in the heat collection water tank is lower than the lower limit water level, the control system 3 controls a water replenishing valve 21 of the water replenishing unit 2 to be opened for replenishing water; when the water level of the heat collection water tank is higher than the lower limit water level, the control system 3 controls the heat pump water inlet valve 55, the heat pump circulating pump 54 and the air source heat pump hot water unit 51 to be opened, or controls the solar water inlet valve 45 and the solar circulating pump 44 to be opened, so as to heat the water in the heat collection water tank; when the water level of the heat collection water tank reaches the upper limit water level, the control system 3 controls the water replenishing valve 21 to be closed; when the water in the heat collecting water tank is heated to the set temperature, the control system 3 controls the solar heating circulation system and the air source heat pump hot water unit 51 to stop running.
And (3) a system constant temperature stage: when the hot water in the heat collection water tank is not used for a long time, the control system 3 controls the heat pump water inlet valve 55, the heat pump circulating pump 54 and the air source heat pump hot water unit 51 to be opened according to the self-set water temperature, for example, the water temperature is lower than 50 ℃, so as to heat the water in the heat collection water tank, and the operation is stopped until the water temperature in the heat collection water tank is increased to 55 ℃; in the process, the solar heating circulation system heats the solar heating circulation system at the same time.
The system directly heats stage: in the water use period, hot water already stored in the water collection tank is preferentially used; when the water quantity is insufficient, the air source heat pump hot water unit 51 and the solar heating circulation system are controlled to run in a direct heating mode for supplement.
A system water supply stage: the control system 3 controls the tail end circulating pump 64 to continuously run at a low frequency, water stored in the tail end water inlet pipe 62, the tail end water return pipe 63 and the tail end circulating unit 61 is returned to the heat collecting water tank to be mixed with hot water, the tail end circulating pump 64 is controlled by the node pressure gauge and the frequency converter, water supply pressure can be set as required, and water consumption point water pressure is guaranteed to be constant.
Further, the control system 3 controls the unit valves 65 to open and close, thereby controlling the respective end circulation units 61 to operate independently.
The invention is not detailed in all aspects and is the conventional technical means in the technical field.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. Utilize heating, refrigeration and hot water supply system of compound energy, including the thermal-arrest water tank that is connected with moisturizing unit (2), its characterized in that: the heat collection water tank is connected with a solar heating circulation system and a water end circulation system, the heat collection water tank is connected with an air source heat pump hot water unit (51) with total heat recovery, the air source heat pump hot water unit (51) is connected with an air source cold/hot water module unit (7) in parallel, the air source heat pump hot water unit (51) and the air source cold/hot water module unit (7) form a loop through a water inlet pipe (71) and a water return pipe (72) respectively, a water separator (73) and a water collector (74) are arranged between the water inlet pipe (71) and the water return pipe (72), a floor heating water pipe system is connected between the water separator (73) and the water collector (74), an indoor side air conditioner end and an indoor side combined air treatment unit are arranged, a water level sensor (11) and a temperature sensor (12) which are connected with a control system (3) are arranged in the heat collection water tank, the solar heating circulation system, the air source heat pump hot water unit (51), the air source cold/hot water module unit (7), the floor heating pipe system, the indoor side air conditioner tail end, the indoor side combined air treatment unit and the water tail end circulation system are connected.
2. The heating, cooling and hot water supply system using hybrid energy according to claim 1, wherein: solar energy heating cycle system includes solar panel (41), and solar panel (41) link to each other with the hot water collecting tank through solar energy inlet tube (42) and solar energy outlet pipe (43), and solar energy inlet tube (42) or solar energy outlet pipe (43) are connected with solar energy circulating pump (44), control system (3) link to each other with solar energy circulating pump (44).
3. The heating, cooling and hot water supply system using hybrid energy according to claim 2, wherein: the solar heating circulation system comprises a plurality of solar parallel units, and each solar parallel unit comprises a plurality of solar panels (41) connected in series.
4. A heating, cooling and hot water supply system using hybrid energy according to any one of claims 1 to 3, wherein: the air source heat pump hot water unit (51) is connected with the heat collection water tank through a heat pump water inlet pipe (52) and a heat pump water outlet pipe (53), the heat pump water inlet pipe (52) or the heat pump water outlet pipe (53) is connected with a heat pump circulating pump (54), and the control system (3) is connected with the heat pump circulating pump (54) and the air source heat pump hot water unit (51).
5. The heating, cooling and hot water supply system using hybrid energy according to claim 4, wherein: the air source heat pump hot water unit (51) and the air source cold/hot water module unit (7) are provided with a plurality of units, the water inlet end of each air source heat pump hot water unit (51) is connected with a heat pump water inlet pipe (52), and the water outlet end is connected with a heat pump water outlet pipe (53); a heat pump water inlet valve (55) connected with the control system (3) is arranged between the heat pump circulating pump (54) and the heat collecting water tank.
6. The heating, cooling and hot water supply system using hybrid energy according to claim 5, wherein: the water end circulating system comprises an end circulating unit (61), the end circulating unit (61) is connected with the heat collecting water tank through an end water inlet pipe (62) and an end water return pipe (63), the end water inlet pipe (62) is provided with a silver ion disinfection filtering device (68), the end water inlet pipe (62) or the end water return pipe (63) is connected with an end circulating pump (64), and the control system (3) is connected with the end circulating pump (64); and unit valves (65) connected with the control system (3) are arranged between the tail end circulating unit (61) and the tail end water inlet pipe (62) and between the tail end circulating unit and the tail end water return pipe (63), tail end water inlet valves (66) connected with the control system (3) are arranged on the tail end water inlet pipes (62), and tail end water return valves (67) connected with the control system (3) are arranged on the tail end water return pipes (63).
7. A heating, cooling and hot water supply system using hybrid energy according to any one of claims 1 to 3 and 5 to 6, wherein: the heat collecting water tank comprises a heating water tank (101) and a constant temperature water tank (102) which are communicated, the solar water inlet pipe (42), the solar water outlet pipe (43), the heat pump water inlet pipe (52) and the heat pump water outlet pipe (53) are connected with the heating water tank (101), and the tail end water inlet pipe (62) and the tail end water return pipe (63) are connected with the constant temperature water tank (102).
8. The control method of heating, cooling and hot water supply system using hybrid energy according to claim 7, comprising the following operation modes:
(1) in summer and sunshine: when refrigeration is not needed indoors, the control system (3) controls the solar heating circulation system to be started preferentially to supply hot water; when the indoor needs to be refrigerated, the control system (3) preferentially starts the air source heat pump hot water unit (51), and when the indoor needs to be refrigerated, redundant heat is freely recovered to prepare domestic hot water and is stored in the constant temperature water tank (102) according to the set water temperature;
(2) in rainy days and winter: when the solar heating circulation system cannot completely meet the requirement of domestic hot water supply, the control system (3) firstly controls the solar heating circulation system to be started preferentially to raise the water temperature in the heating water tank (101), then the control system (3) controls the air source heat pump hot water unit (51) to heat the hot water in the heating water tank (101) to 55 ℃, and then the hot water at the temperature of 55 ℃ is conveyed from the heating water tank (101) to the constant temperature water tank (102); the control system (3) controls the air source cold/hot water module unit (7) to perform heating in winter;
(3) in transitional season and sunshine days: the control system (3) controls the solar heating circulation system and the air source heat pump hot water unit (51) to synchronously supply hot water, or adopts the same hot water supply mode as that in rainy days and winter.
9. The control method of heating, cooling and hot water supply system using hybrid energy according to claim 8, comprising the steps of:
the system start phase: the control system (3) receives monitoring data of the water level sensor (11) in real time, and when the water level in the heat collection water tank is lower than the lower limit water level, the control system (3) controls a water replenishing valve (21) of the water replenishing unit (2) to be opened for replenishing water; when the water level of the heat collection water tank is higher than the lower limit water level, the control system (3) controls a heat pump water inlet valve (55), a heat pump circulating pump (54) and an air source heat pump hot water unit (51) to be opened, or controls a solar water inlet valve (45) and a solar circulating pump (44) to be opened, so that water in the heat collection water tank is heated; when the water level of the heat collection water tank reaches the upper limit water level, the control system (3) controls the water replenishing valve (21) to be closed; when water in the heat collection water tank is heated to a set temperature, the control system (3) controls the solar heating circulation system and the air source heat pump hot water unit (51) to stop running;
and (3) a system constant temperature stage: when hot water in the heat collection water tank is not used for a long time, the control system (3) can control a heat pump water inlet valve (55), a heat pump circulating pump (54) and an air source heat pump hot water unit (51) to be opened according to self-set water temperature, for example, the water temperature is lower than 50 ℃, so that water in the heat collection water tank is heated, and the operation is stopped until the water temperature in the heat collection water tank is raised to 55 ℃; in the process, the solar heating circulation system heats the solar heating circulation system at the same time;
the system directly heats stage: in the water use period, hot water already stored in the water collection tank is preferentially used; when the water quantity is insufficient, controlling the air source heat pump hot water unit (51) and the solar heating circulation system to run in a direct heating mode for supplement;
a system water supply stage: the control system (3) controls the tail end circulating pump (64) to continuously run at low frequency, water stored in the tail end water inlet pipe (62), the tail end water return pipe (63) and the tail end circulating unit (61) returns to the heat collecting water tank to be mixed with hot water, the tail end circulating pump (64) is controlled by the electric node pressure gauge and the frequency converter, water supply pressure can be set as required, and water consumption point water pressure is guaranteed to be constant.
10. The control method of heating, cooling and hot water supply system using hybrid energy according to claim 9, comprising the steps of: the control system (3) controls the unit valves (65) to be opened and closed, and then controls each tail end circulating unit (61) to independently operate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011404055.0A CN112361622A (en) | 2020-12-04 | 2020-12-04 | Heating, refrigerating and hot water supply system using composite energy and control method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113883590A (en) * | 2021-11-10 | 2022-01-04 | 西安建筑科技大学 | Flexible control method and system for solar heating |
| CN115900134A (en) * | 2022-11-16 | 2023-04-04 | 珠海格力电器股份有限公司 | Multi-heat-pump module unit and anti-freezing control method thereof |
-
2020
- 2020-12-04 CN CN202011404055.0A patent/CN112361622A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113883590A (en) * | 2021-11-10 | 2022-01-04 | 西安建筑科技大学 | Flexible control method and system for solar heating |
| CN113883590B (en) * | 2021-11-10 | 2023-05-26 | 西安建筑科技大学 | Flexible control method and system for solar heating |
| CN115900134A (en) * | 2022-11-16 | 2023-04-04 | 珠海格力电器股份有限公司 | Multi-heat-pump module unit and anti-freezing control method thereof |
| CN115900134B (en) * | 2022-11-16 | 2024-06-04 | 珠海格力电器股份有限公司 | Multi-heat pump module unit and anti-freezing control method thereof |
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