CN107120833A - A kind of heat pump heat pipe combined control system of solar energy water heater and operation method - Google Patents
A kind of heat pump heat pipe combined control system of solar energy water heater and operation method Download PDFInfo
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- CN107120833A CN107120833A CN201710288172.7A CN201710288172A CN107120833A CN 107120833 A CN107120833 A CN 107120833A CN 201710288172 A CN201710288172 A CN 201710288172A CN 107120833 A CN107120833 A CN 107120833A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 209
- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000006855 networking Effects 0.000 claims abstract description 60
- 230000007613 environmental effect Effects 0.000 claims abstract description 24
- 230000005855 radiation Effects 0.000 claims description 41
- 238000010438 heat treatment Methods 0.000 claims description 36
- 230000005494 condensation Effects 0.000 claims description 15
- 238000009833 condensation Methods 0.000 claims description 15
- 238000001704 evaporation Methods 0.000 claims description 15
- 239000006200 vaporizer Substances 0.000 claims description 15
- 238000009413 insulation Methods 0.000 claims description 14
- 230000008020 evaporation Effects 0.000 claims description 13
- 239000012530 fluid Substances 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000000498 cooling water Substances 0.000 claims description 4
- 230000001953 sensory effect Effects 0.000 claims description 4
- 230000008569 process Effects 0.000 abstract description 7
- 239000003507 refrigerant Substances 0.000 description 11
- 230000008859 change Effects 0.000 description 9
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 239000000306 component Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000002463 transducing effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
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- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
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- 230000001788 irregular Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H4/00—Fluid heaters characterised by the use of heat pumps
- F24H4/02—Water heaters
- F24H4/04—Storage heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/40—Thermal components
- H02S40/42—Cooling means
- H02S40/425—Cooling means using a gaseous or a liquid coolant, e.g. air flow ventilation, water circulation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/40—Thermal components
- H02S40/44—Means to utilise heat energy, e.g. hybrid systems producing warm water and electricity at the same time
-
- 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
-
- 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
- Y02B10/10—Photovoltaic [PV]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
-
- 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
- Y02E10/50—Photovoltaic [PV] energy
-
- 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
- Y02E10/60—Thermal-PV hybrids
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (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 kind of heat pump heat pipe combined control system of solar energy water heater and operation method, the system has the heat pump mode that frequency-changeable compressor drives and the two kinds of mode of operations of heat pipe pattern driven with working medium pump, system can realize that three kinds of the mixed mode of heat pump after whole heat pump mode, whole process heat pipe pattern and elder generation's heat pipe heats aqueous mode under the director of networking control of real-time tracking environmental working condition and water tank temperature；Director of networking determines the startup time according to weather forecast, the environmental working condition collected and water tank water temperature data, heats the opportunity of aqueous mode and switch mode；In heat pump mode, system can be run according to real-time ambient parameter and water tank temperature dynamic regulation compressor varying capacity, and expansion valve control photovoltaic evaporator superheat remains smaller value；The varying capacity control of the combined running pattern and tracking environmental operating mode of heat pipe and heat pump mode so that the system had both met annual domestic hot-water's demand of user, and the energy-efficient operation of environmental condition is followed again.
Description
Technical field
The present invention relates to the control of compressor varying capacity, the technology of photovoltaic heat pump/heat pipe combined water heater, more particularly to one kind
Using controller and sensor according to the data of weather forecast from Network Capture and the ambient parameter of collection, when decision systems start
Between, heat pump/heat pipe operational mode and switching time, the device and method of control photovoltaic heat pump pattern varying capacity operation.
Background technology
With the continuous improvement of people's living standards, average family is also increasing to the demand of domestic hot-water, life heat
The proportion of the energy consumption of water also constantly increases, therefore, realizes that energy-efficient domestic hot-water supply turns into urgent problem to be solved.
Solar water heater is the effective means for solving family life hot water demand.Traditional solar water heater is in wet weather
Weather or winter solar, which radiate weaker weather, could meet the demand that user produces domestic water by electrical heating, still
The efficiency that domestic hot-water is produced in electrical heating is far below the efficiency that domestic hot-water is produced using heat pump.
Photovoltaic heat pump water heater is a kind of photovoltaic and photothermal integral device for combining photovoltaic battery panel and Teat pump boiler.
It can meet photovoltaic generation simultaneously in limited area and photo-thermal produces domestic hot-water, and heat pump ensure that system is annual all
The domestic hot-water for meeting and requiring can be produced.
Solar panel is when absorbing solar radiation generating, and only 10%-18% energy is converted into electric energy, its complementary energy
Then it is converted into heat energy.The photoelectric transformation efficiency of solar cell is negatively correlated with cell piece temperature, and solar cell battery temperature is every
1 DEG C of rise, photoelectric efficiency declines about 0.4%.Compared with strong sunlight, cell piece temperature easily reaches 50-70 DEG C, if absorbed
These heats, reduction cell piece temperature can then allow generating efficiency to be maintained at higher level.
Solar energy is that a kind of spatial and temporal distributions are uneven, larger regenerative resource is influenceed by weather.Use solar energy heating
When device is as source heat pump heat, blocked as sun altitude changes, cloud layer is irregular, the solar radiation moment is all in change.It is existing
Solar heat-pump water heater system or photovoltaic heat pump system use invariable frequency compressor or only before unit starting according to the sun mostly
Radiation and ambient temperature data set the compressor operating frequency of this operation.The system reply change solar radiation of fixed frequency operation
The scarce capacity of environment.When radiation is significantly increased, the system of fixed frequency operation heats water speed and accelerated, but cause to shorten when
In photovoltaic cell do not cool operation, do not seize a favorable opportunity reduction running frequency yet, in general whole day system net hair
Electricity is reduced.It when radiation is obviously reduced, also can not in time make adjustment, system possibly can not be completed in defined run time
Hot water task.
Compressor variable frequency technology can adjust compressor operating frequency to adjust compressor air suction amount, change Teat pump boiler system
The heat absorption capacity of system, so change heat pump evaporating temperature, with meet heat pump produce domestic hot-water time restriction,
Adjust the purpose of photovoltaic cell operating temperature and energy saving of system operation.
Solar heat-pump water heater is when radiation intensity is higher, when evaporating temperature is too high, and fixed frequency, which starts, can cause compressor
Overload, causes solar heat-pump water heater can not be used under the stronger operating mode of some radiation.If using frequency-changeable compressor,
Start under lower frequency, be then avoided that overload of compressor.But under this operating mode, compressor can not be opened with too low frequency
Dynamic, otherwise pressure is hung upside down at the choke valve in heat pump, and system also can not normally be run.
Temperature is higher, the stronger Clear Days Summer of radiation, the hot water preparing that light-volt solar heat pump water heater needs when
Between only need within 2 hours, cause plenty of time photovoltaic module not cooled down, the operation of heat pump but still consumes more
Electric energy.The annular heat pipe of working medium pump driving is that heat gasification is absorbed at high temperature using cycle fluid, and pipe is overcome by working medium pump
Road resistance, condenses a kind of exothermic heat transfer loop at low temperature.When solar radiation is stronger, the temperature of photovoltaic thermal-arrest evaporation plate
Far above water tank water temperature, if the annular heat pipe pattern driven using working medium pump carries out water heating process, on the one hand it can avoid
Overload or pressure in terms of compressor start are hung upside down, and on the other hand can just complete system with the working medium pump smaller than compressor that consume energy
Hot water task.But under equal working medium flow, the rate of heat addition of the annular heat pipe pattern of working medium pump driving is less than driven compressor
Heat pump mode the rate of heat addition.Weather condition, which also differs, surely to be supported only to complete water heating task by annular heat pipe operation.Cause
This is, it is necessary to which heat pump/heat pipe combined operation meets the time restriction of water heating task.
It was found from above-mentioned analysis, light-volt solar heat pump/heat pipe combined water-heater system can reduce photovoltaic during operation
The operating temperature of component, the generated energy for improving photovoltaic module, while heat pump mode ensures the domestic hot-water supply under the conditions of whole year,
Heat pipe pattern is conducive to further reducing water heating operation energy consumption under favourable operating mode, has the advantages that floor space is small.Track ring
The heat pump of border working conditions change/heat pipe model selection strategy and according to the heat pump mode varying capacity of environmental working condition operation control to photovoltaic
Adaptation environmental change, control working time and the raising coefficient of performance of solar heat pump/heat pipe combined water heater have important work
With.Therefore, the varying capacity light-volt solar heat pump/heat pipe combined water-heater system and method for research energy tracking environmental operating mode have
Significance.
The content of the invention
For above-mentioned problem, present invention aims at provide a kind of Heat Pump of the varying capacity of tracking environmental operating mode
Pipe compound control system of solar energy water heater and operation method.
In order to achieve the above object, the technical solution adopted by the present invention is as follows：A kind of heat pipe combined solar heat of heat pump
Hydrophone control system, described control system be arranged on solar water heater photovoltaic thermal-arrest evaporation plate and insulation condensation water tank it
Between, control system includes the pattern switching group of core control component, environmental working condition and water tank temperature sensory package, heat pump and heat pipe
Part, heat pump mode varying capacity control assembly.
The core control component of the present invention is director of networking 4；Described environmental working condition and water tank temperature sensory package bag
Include intensity of solar radiation sensor 3, environment temperature sensor 2 and water tank cooling-water temperature sensor 6；Described heat pump and the pattern of heat pipe
Changeover module includes compressor branch road, bypasses stop valve 11,9, and expansion valve branch road bypasses stop valve 14,16；Described heat pump mould
Formula varying capacity control assembly includes frequency converter 5, frequency-changeable compressor 12, expansion valve 13, the supporting temperature and pressure transmitter of expansion valve
8。
In the light-volt solar heat pump circulation of the present invention, the outlet of photovoltaic thermal-arrest evaporation plate and compressor branch road stop valve, change
Frequency compressor, insulation condensation water tank, fluid reservoir, expansion valve branch road stop valve, expansion valve are sequentially connected, and eventually pass back to photovoltaic thermal-arrest
Using copper pipe connection between evaporation plate entrance formation loop, each part, circulatory mediator is refrigerant, has confession inside the attemperater
There is the pipeline absorbed heat for refrigerant from photovoltaic cell in the pipeline of refrigerant heat release, the photovoltaic collecting plate.
Photovoltaic solar heat pipe is circulated and light-volt solar heat pump cycle sharing photovoltaic collection hot vaporizer and insulation condensed water
Case, photovoltaic thermal-arrest evaporation plate outlet is bypassed with compressor stop valve, working medium pump, insulation condensation water tank, fluid reservoir, expansion valve
Stop valve is sequentially connected, and eventually passes back to using copper pipe connection, circulation be situated between photovoltaic thermal-arrest evaporator inlet formation loop, each part
Matter is identical with heat pump cycle.
Control system of online is sensed to circulate with light-volt solar heat pump and photovoltaic solar heat pipe cycle sharing compressor branch
Road, bypass stop valve and expansion valve branch road, bypass stop valve, intensity of solar radiation sensor, environment temperature sensor, water tank temperature
Degree sensor is connected as transducing part with director of networking, and frequency converter, expansion valve, working medium pump, compressor branch road and bypass are cut
Only valve, expansion valve branch road and bypass stop valve are connected as executing agency with director of networking, and frequency-changeable compressor connects with frequency converter
Connect, networked sensor is connected with internet.
The invention discloses a kind of operation method of the heat pipe combined control system of solar energy water heater of heat pump；Described fortune
Row method comprises the following steps：
1) before system starts, be stored with the heat pipe Schema control Policy Table made and heat pump mode in director of networking
Control scheme list；
2) director of networking accesses internet, obtains the same day local weather forecast data；Set according to of that month sunshine duration
The maximum water heating time, according to the same day weather forecast data setting available machine time, while water tank water temperature is gathered, it is determined that the same day completes
The time that water heating task needs；
3) when system starts, director of networking is according at the beginning of the intensity of solar radiation, environment temperature and Water in Water Tank that gather in real time
Warm data, selection starts different mode of operations：Heat pump mode after whole heat pump mode, whole heat pipe pattern or first heat pipe；
4) in the heat pump mode, according to the data gathered in real time, director of networking control light-volt solar heat pump water heater
Transfiguration is run；
5) water temperature reaches predetermined temperature, then controller control system is shut down.
The present invention this method mainly rely on director of networking, the director of networking can for PLC, single-chip microcomputer, computer or
Other have the integrated control element of networking, storage, collection and output function.
The function of the director of networking of the present invention works of both being substantially carried out：
On the one hand it is to obtain data of weather forecast, obtain real-time intensity of solar radiation, environment temperature and water tank temperature data,
Startup time, operational mode and the switching time of composite water heater system are controlled,
On the other hand it is the transfiguration that heat pump mode is controlled according to real-time intensity of solar radiation, environment temperature and water tank temperature
Amount operation.In order to carry out the heat pipe Schema control Policy Table for being stored with and having made in the work of these two aspects, director of networking
With heat pump mode control scheme list,
Being stored with heat pipe Schema control Policy Table can provide according to what product performance was obtained under various environmental working conditions
Complete to be stored with according to product performance in the minimum initial water tank water temperature of water heating task, heat pump mode control scheme list in time
What is obtained can complete the minimum operation frequency of water heating task at the appointed time under various environmental working conditions and water tank temperature combination
Rate.
Before startup, director of networking accesses internet and obtains the same day local weather forecast data, and collection water tank water temperature is determined
The same day completes the time that water heating task needs.During startup, the solar radiation that director of networking collection Sensor section is obtained is strong
Degree, environment temperature and Water in Water Tank initial temperature data, if intensity of solar radiation is very high and Water in Water Tank initial temperature is without departing from environment temperature
Degree is a lot, then current environment operating mode is compared with heat pipe Schema control Policy Table, if minimum initial water tank water temperature is not less than
Current Water in Water Tank initial temperature, then further transfer short-range forecast data, if being entirely fine day during predetermined water heating task,
Then director of networking sets whole heat pipe operational mode.If minimum initial water tank water temperature is higher than current Water in Water Tank in above-mentioned comparison
Initial temperature has cloudy weather in predetermined water heating mission area, then switchs to the combined running pattern of heat pump after first heat pipe.If too
Positive radiation intensity is not high or Water in Water Tank initial temperature is many beyond environment temperature, then directly switchs to whole heat pump operation mode.
Heat pipe operational mode opens compressor stop valve, expansion valve by director of networking and bypasses stop valve and working medium
Pump, close compressor branch road stop valve, expansion valve branch road stop valve, refrigerant absorbs heat in photovoltaic collection hot vaporizer, passes through work
Matter, which is pumped into insulation condensation water tank heat release and returns to the continuous heat absorption of photovoltaic collection hot vaporizer relaying, forms circulation.
Heat pump operation mode opens compressor branch road stop valve, expansion valve branch road stop valve, frequency conversion by director of networking
Compressor and expansion valve, close compressor by-pass stop valve, expansion valve bypass stop valve, refrigerant is in photovoltaic collection hot vaporizer
Heat absorption, insulation condensation water tank exothermic condensation is transported to after compressor compresses, low-temp low-pressure is changed into again by expansion valve
State continues the cyclic process in photovoltaic collection hot vaporizer.
Director of networking all gathers environmental working condition data and water tank water temperature data in real time in which kind of operational mode.Formerly
After heat pipe under the operational mode of heat pump, director of networking controls the opportunity of heat pipe pattern switching heat pump mode.
During heat pipe mode operation, if the intensity of solar radiation that director of networking is collected dies down, it is not enough to support
Efficient annular heat pipe pattern, then switching system is heat pump mode to director of networking at once, even if intensity of solar radiation keep compared with
By force, but water heating task can not be completed in the given time according to judgement when starting, then when water tank water temperature exceedes environment temperature
After spending to a certain degree, director of networking automatic switchover system is heat pump mode.
In the heat pump mode, the varying capacity of the tracking environmental operating mode of director of networking control light-volt solar heat pump water heater
Effec-tive Function.On the one hand, director of networking compares heat pump mode control according to the query composition of environmental working condition and water tank temperature in real time
Policy Table processed, director of networking is according to the minimum operating frequency control frequency converter output minimum operating frequency inquired, frequency conversion pressure
Contracting machine is run under frequency as defined in frequency converter, on the other hand, director of networking according to expansion valve it is supporting be arranged on evaporator
The temperature of outlet, pressure sensor control expansion valve opening, keep the relatively low super heat value of photovoltaic collection hot vaporizer, and two aspects are tied
Close the varying capacity Effec-tive Function for the tracking environmental operating mode for realizing heat pump mode.
Water temperature reaches predetermined temperature, then controller control system is shut down.The method can realize photovoltaic heat pump hot-water heating system
Energy-saving run, also ensures that system completes water heating task, meets user's request.
The advantage of the invention is that：
1) the method increases finite-element on the basis of non-frequency photovoltaic heat pump water heater, and connection transformation is easy to be reliable,
Can the transformation and upgrade on the basis of non-frequency photovoltaic heat pump water heater；
2) dynamic adapting environment Parameters variation is adjusted using Real-time frequency conversion, had both saved heat pump operation energy consumption, and can also protect
Demonstrate,prove generating efficiency, the guarantee completion water heating task when radiating weaker that photovoltaic cell keeps higher；
3) the mixed running pattern of heat pump is avoided that simple heat pump mode under some operating modes after heat pipe pattern or first heat pipe
The evaporative condenser pressure inversion phenomenon of startup stage, can also save system energy consumption.
Brief description of the drawings
Fig. 1 is the schematic diagram that present system is connected；
Fig. 2 is the process chart that present system is run；
Fig. 3 be embodiments of the invention 6 in the same day weather condition；
Fig. 4 is the implementation process figure in embodiments of the invention 6.
Wherein, 1 photovoltaic thermal-arrest evaporation plate, 2 environment temperature sensors, 3 solar radiation sensors, 4 director of networkings, 5 become
Frequency device, 6 cooling-water temperature sensors, 7 insulation condensation water tanks, the temperature and pressure transmitter of 8 expansion valve evaporator outlets, by 9 compressors
Road stop valve, 10 working medium pumps, 11 compressor branch road stop valves, 12 frequency-changeable compressors, 13 expansion valves, the cut-off of 14 expansion valve branch roads
Valve, 15 fluid reservoirs, 16 expansion valves bypass stop valve.
Embodiment
The present invention is described in further detail with embodiment for explanation below in conjunction with the accompanying drawings.
Heat pipe Schema control Policy Table in the present invention is fixing solar radiation with heat pump mode control scheme list for client
The control table that intensity and environment temperature are formulated in simulation program.
Embodiment 1：Followed as shown in figure 1, the system of the present invention includes light-volt solar heat pump circulation, photovoltaic solar heat pipe
Ring and sensing control system of online.In light-volt solar heat pump circulation, the outlet of photovoltaic thermal-arrest evaporation plate 1 ends with compressor branch road
Valve 11, frequency-changeable compressor 12, insulation condensation water tank 7, fluid reservoir 15, expansion valve branch road stop valve 14, expansion valve 13 are sequentially connected,
Eventually pass back between the entrance of photovoltaic thermal-arrest evaporation plate 1 formation loop, each part using copper pipe connection, circulatory mediator is refrigerant, institute
Stating has what is absorbed heat for refrigerant from photovoltaic cell in the pipeline having inside attemperater for refrigerant heat release, the photovoltaic collecting plate
Pipeline.
Photovoltaic solar heat pipe is circulated and light-volt solar heat pump cycle sharing photovoltaic collection hot vaporizer 1 and insulation condensed water
Case 7, the outlet of photovoltaic thermal-arrest evaporation plate 1 and compressor stop valve 9, working medium pump 10, be incubated condensation water tank 7, it is fluid reservoir 15, swollen
Swollen valve bypass stop valve 16 is sequentially connected, and eventually passes back to use copper pipe between the entrance of photovoltaic collection hot vaporizer 1 formation loop, each part
Connection, circulatory mediator is identical with heat pump cycle.
Control system of online is sensed to circulate with light-volt solar heat pump and photovoltaic solar heat pipe cycle sharing compressor branch
Road, bypass stop valve 11,9 and expansion valve branch road, bypass stop valve 14,16, intensity of solar radiation sensor 3, environment temperature are passed
Sensor 2, water tank temperature sensor 6 are connected as transducing part with director of networking 4, frequency converter 5, expansion valve 13, working medium pump 10,
Compressor branch road and bypass stop valve 11,9, expansion valve branch road and bypass stop valve 14,16 are used as executing agency and networking control
Device 4 is connected, and frequency-changeable compressor 12 is connected with frequency converter 5, and networked sensor 4 is connected with internet.
Embodiment 2：As illustrated in fig. 1 and 2, the system can realize two kinds of operational modes under the control of director of networking：
1) heat pipe operational mode opens compressor stop valve 9, expansion valve by director of networking 4 and bypasses stop valve 16
With working medium pump 10, close compressor branch road stop valve 11, expansion valve branch road stop valve 14, refrigerant is in photovoltaic collection hot vaporizer 1
Middle heat absorption, by working medium pump 10 be transported to insulation condensation water tank 7 in heat release and return in photovoltaic collection hot vaporizer 1 continue absorb heat shape
Into circulation.
2) heat pump operation mode opens compressor branch road stop valve 9, expansion valve branch road stop valve by director of networking 4
14th, frequency-changeable compressor 12 and expansion valve 13, close compressor by-pass stop valve 9, expansion valve bypass stop valve 16, refrigerant is in light
Absorbed heat in volt collection hot vaporizer 1, the insulation exothermic condensation of condensation water tank 7 is transported to after the compression of compressor 12, by expansion valve
13 states for being changed into low-temp low-pressure again continue the cyclic process in photovoltaic collection hot vaporizer 1.
Embodiment 3：As shown in figure 1, director of networking 4 is the core component of the system, changing director of networking can be
PLC, single-chip microcomputer, computer or other integrated control elements with networking, storage, collection and output function.Environment temperature is passed
Sensor 2, water tank cooling-water temperature sensor 6 can be thermocouple, thermal resistance equitemperature sensor, and solar radiation sensor 3 can be too
The element of the energetic radiation intensity size such as positive pyranometer.Director of networking 4 can gather environment temperature sensor 2, too in real time
The signal of positive radiation sensor 3 and water tank temperature sensor 6, director of networking 4 can by output signal control compressor,
Branch road stop valve 9,11, expansion valve branch road, bypass stop valve 14,15, the switch on and off of working medium pump 10.Director of networking 4 can lead to
Cross communication modes or Terminal control mode sets the electric frequency of output of frequency converter 5, communication modes or Terminal control mode can be passed through
Set the degree of superheat for the photovoltaic collection hot vaporizer 1 that expansion valve 13 and the supporting temperature of expansion valve, pressure sensor 8 are controlled.
Embodiment 4：As shown in figure 1, frequency converter 5 inputs power network alternating current, the running frequency provided according to director of networking 4
Export the electric current driving converting operation of compressor 12 of certain frequency.Expansion valve 13 is according to the supporting temperature and pressure transmitter of expansion valve
8 detection evaporator outlet refrigerant conditions, the aperture size of expanding valve core are automatically adjusted according to internal PID algorithm, it is ensured that light
The degree of superheat of volt collection hot vaporizer 1 is identical with the degree of superheat that director of networking 4 is set.
Embodiment 5：As illustrated in fig. 1 and 2, the detailed control flow of present system operation method is as follows：
1st, before starting, the networking of director of networking 4 obtains date, same day Local Weather Report, Water in Water Tank initial temperature data；
Maximum water heating duration is then set according to of that month sunshine duration, winter maximum water heating duration is small, and summer is maximum
Grown up during water heating；
The available machine time is then set according to weather forecast, if fine day or partly cloudy weather completely, is pressed centered on 12 thirty
The scheduled time sets the startup time, if cloudy, the startup time is set on schedule with 12 Dian15Fen Wei centers, if cloudy
Or it is worse, set the startup time on schedule centered on 12 points.
When the 2nd, starting, intensity of solar radiation, environment temperature and Water in Water Tank initial temperature when collection starts.
If radiation intensity is more than 700W/m2And Water in Water Tank initial temperature is not higher than environment temperature more than 5 DEG C, then determine whether,
Otherwise unit is started by whole heat pump mode.
If previous step meets, if at the beginning of the minimum Water in Water Tank that now the initial water temperature of water tank is checked in not less than heat pipe operation reserve table
Temperature, and be all fine day in predetermined water heating duration, then start unit by whole heat pipe pattern；
Any one requirement is not met then starts unit by heat pump mode after first heat pipe.
3rd, in the process of running, no matter which kind of operational mode, the current solar radiation of the collection per minute of director of networking 4 is strong
Degree, environment temperature and water tank water temperature data.
1) during whole heat pipe pattern, end of being shut down if water tank water temperature reaches default water temperature entirely heats Water flow-path, otherwise
Continue heat pipe pattern water heating process.
2) during whole heat pump mode, director of networking 4 is gathered after the data of each sensor, inquires about heat pump mode control strategy
Table, draws the minimum operating frequency f that predetermined water heating time restriction is met under current environment operating mode, and then setting frequency converter 5 is transported
Row is in new frequency f, and end of being shut down if water tank water temperature reaches default water temperature entirely heats Water flow-path, otherwise continues heat pump mode
Water heating process.
3) after first heat pipe during heat pump mode, if after collection environmental data and water tank temperature data, intensity of solar radiation is more than
700W/m2And water temperature is not higher than environment temperature more than 10 DEG C, then heat pipe pattern hot water preparing is continued to, if certain any one
It is unsatisfactory for, then switchs to heat pump mode and continue water heating process.
:Embodiment 6：As shown in Figures 3 and 4, the implementing procedure of present system operation method is as follows：
1st, before starting, the networking of director of networking 4 obtains weather condition such as Fig. 3 institute of the date for the same day on the 15th March in 2017
Show：
Wherein Water in Water Tank initial temperature is 12.73 DEG C, then sets maximum water heating duration according to the sunshine duration in March,
In the present embodiment, for convenience of explanation, maximum water heating duration is set as 300min herein, is then opened according to weather forecast setting
Machine time, its same day weather is fine day and partly cloudy weather, therefore with 12:The startup time is set centered on 30, the time that starts is 10
O'clock sharp；Heat pump mode control scheme list is formulated in system need to be as shown in the table with part selected parts：
Heat pump mode control scheme list
2) when starting, find intensity of solar radiation when 10 o'clock sharps started more than 700W/m2, environment temperature be 13 DEG C, water
Case water initial temperature is 12.73 DEG C.Consequently found that its radiation intensity is more than 700W/m2And Water in Water Tank initial temperature is not higher than 5 DEG C of environment temperature
More than, system is determined as after first heat pipe that heat pump mode starts.
3) the director of networking current intensity of solar radiation of collection per minute, environment temperature and water tank water temperature data；It is gathered
Data it is as shown in Figure 4：
If solar radiation is persistently more than 700W/m2And water temperature is not higher than environment temperature more than 10 DEG C, then still with heat pipe mould
Formula hot water preparing, due to 12：Solar radiation drops to 700W/m first when 302Hereinafter, if therefore 12：Water temperature is not up to ring before 30
More than 10 DEG C of border temperature, then lasting heat pipe pattern, until 12：30 switching heat pump modes, if 12：Environment temperature 10 has been reached before 30
More than DEG C, then switch heat pump mode at once when temperature is up to standard.
Switch after heat pump mode, director of networking is gathered after the data of each sensor, inquire about heat pump mode control scheme list,
The minimum operating frequency f that predetermined water heating time restriction is met under current environment operating mode is drawn, then setting frequency converter is operated in
New frequency f, if water tank water temperature reaches default water temperature, shutdown terminates entirely to heat Water flow-path；Otherwise heat pump mode system is continued
Hot water process.
It was found from from embodiment 6：The weather condition on the weather forecast fundamental forecasting accurate same day, but its precision can not expire
The demand of the sufficient real-time varying capacity operation of light-volt solar heat pump water heater.The change of solar radiation value is followed by the system of the present invention
Change regulation compressor operating frequency in real time, coordinate electric expansion valve to complete the task of real-time varying capacity operation, follow effect excellent
It is different.
It should be noted that it is above-mentioned be only presently preferred embodiments of the present invention, not for limit the present invention protection model
Enclose, any combination or equivalents made on the basis of above-described embodiment belong to protection scope of the present invention.
Claims (10)
1. the heat pipe combined control system of solar energy water heater of a kind of heat pump, it is characterised in that described control system is arranged on
Between the photovoltaic thermal-arrest evaporation plate and insulation condensation water tank of solar water heater, control system includes core control component, environment
The pattern switching component of operating mode and water tank temperature sensory package, heat pump and heat pipe, heat pump mode varying capacity control assembly；
Described core control component is director of networking 4；
Described environmental working condition and water tank temperature sensory package include intensity of solar radiation sensor 3, the He of environment temperature sensor 2
Water tank cooling-water temperature sensor 6；
Described heat pump and the pattern switching component of heat pipe include compressor branch road, bypass stop valve 11,9, and expansion valve branch road is other
Road stop valve 14,16；
Described heat pump mode varying capacity control assembly include frequency converter 5, frequency-changeable compressor 12, expansion valve 13, expansion valve is supporting
Temperature and pressure transmitter 8.
2. the heat pipe combined control system of solar energy water heater of heat pump according to claim 1, it is characterised in that described
Light-volt solar heat pump circulation line, photovoltaic solar heat pipe circulation line and sensing networking control system are provided with control system
System.
3. the heat pipe combined control system of solar energy water heater of heat pump according to claim 2, it is characterised in that described
Light-volt solar heat pump circulation line, its outlet through photovoltaic thermal-arrest evaporation plate is sequentially connected compressor branch road stop valve, frequency conversion
Compressor, insulation condensation water tank, fluid reservoir, expansion valve branch road stop valve and expansion valve, are eventually connected to photovoltaic thermal-arrest evaporation plate
Entrance；
Described photovoltaic solar heat pipe circulation line, its outlet through photovoltaic thermal-arrest evaporation plate is sequentially connected compressor and cut
Only valve, working medium pump, insulation condensation water tank, fluid reservoir, expansion valve bypass stop valve and expansion valve bypass stop valve, are eventually connected to
The entrance of photovoltaic collection hot vaporizer.
4. the heat pipe combined control system of solar energy water heater of heat pump according to claim 2, it is characterised in that described
Sensing control system of online includes sensing mechanism and executing agency, and sensing mechanism and executing agency are both connected to director of networking
On, director of networking is connected on the internet, and described frequency converter is connected on frequency-changeable compressor；
Described sensing mechanism includes bypass stop valve, expansion valve branch road, bypass stop valve, intensity of solar radiation sensor, ring
Border temperature sensor, water tank temperature sensor；
Described executing agency includes frequency converter, expansion valve, working medium pump, compressor branch road and bypass stop valve, expansion valve branch road
And bypass stop valve.
5. the heat pipe combined control system of solar energy water heater of heat pump according to claim 3, it is characterised in that described
Light-volt solar heat pump circulation line between each part using copper pipe with photovoltaic solar heat pipe circulation line, being connected, pipe
Circulatory mediator in road is identical.
6. a kind of operation method of the heat pipe combined control system of solar energy water heater of heat pump according to claim 1, its
It is characterised by, described operation method comprises the following steps：
1) before system starts, be stored with the heat pipe Schema control Policy Table made and heat pump mode control in director of networking
Policy Table；
2) director of networking accesses internet, obtains the same day local weather forecast data；Set maximum according to of that month sunshine duration
The water heating time, according to the same day weather forecast data setting available machine time, while water tank water temperature is gathered, it is determined that the same day completes to heat
The time that water task needs；
3) when system starts, director of networking is according to the intensity of solar radiation gathered in real time, environment temperature and Water in Water Tank initial temperature number
According to selection starts different mode of operations：Heat pump mode after whole heat pump mode, whole heat pipe pattern or first heat pipe；
4) in the heat pump mode, according to the data gathered in real time, director of networking control light-volt solar heat pump water heater transfiguration
Operation；
5) water temperature reaches predetermined temperature, then controller control system is shut down.
7. the operation method of the heat pipe combined control system of solar energy water heater of heat pump according to claim 6, it is special
Levy and be, in described heat pipe Schema control Policy Table, its be stored with according to product performance obtain under various environmental working conditions
The minimum initial water tank water temperature of water heating task can be completed at the appointed time；
In described heat pump mode control scheme list, its be stored with according to product performance obtain in various environmental working conditions and water tank
Temperature combination is lower to complete the minimum operating frequency of water heating task at the appointed time.
8. the operation method of the heat pipe combined control system of solar energy water heater of heat pump according to claim 6, it is special
Levy and be, when described system starts, the method that selection starts different working modes is as follows：
1) environmental working condition and water tank water temperature data when determining to start；
If 2) radiation intensity is more than 700W/m2And Water in Water Tank initial temperature is not higher than environment temperature more than 5 DEG C, then determine whether, otherwise
Start unit by whole heat pump mode；
If 3) previous step meets, if at the beginning of the minimum Water in Water Tank that now the initial water temperature of water tank is checked in not less than heat pipe operation reserve table
Temperature, and be all fine day in predetermined water heating duration, then start unit by whole heat pipe pattern；
4) previous step any one requirement is not met, then starts unit by heat pump mode after first heat pipe.
9. the operation method of the heat pipe combined control system of solar energy water heater of heat pump according to claim 8, it is special
Levy and be, be the step of heat pipe pattern switching heat pump mode opportunity method：
1) environmental working condition and water temperature data in each cycle are gathered；
If 2) intensity of solar radiation is more than 700W/m2And water temperature is not higher than environment temperature more than 10 DEG C, then heat pipe pattern is continued to
Hot water preparing, if certain any one is unsatisfactory for, switchs to heat pump mode and continues water heating process.
10. the operation method of the heat pipe combined control system of solar energy water heater of heat pump according to claim 6, it is special
Levy and be, the method for the director of networking control light-volt solar heat pump water heater transfiguration operation is as follows：
1) environmental working condition and water temperature data in each cycle are gathered；
2) control scheme list contrasted current period environmental working condition and water temperature data in director of networking is contrasted, and checks in this ring
Under border operating mode and water temperature condition, the minimum operating frequency f of water heating task can be completed in remaining predetermined water heating duration；
3) frequency-changeable compressor is driven to be run by the running frequency f of setting by frequency converter or frequency changer circuit；
4) photovoltaic evaporator outlet is kept to stablize the less degree of superheat by expansion valve.
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| WO2022269514A1 (en) * | 2021-06-22 | 2022-12-29 | Ben Shitrit Yoav | System for heating water and methods thereof |
| CN116951537A (en) * | 2023-07-31 | 2023-10-27 | 广东微乐环保成套设备有限公司 | Control method and system of solar heat collection evaporator |
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