CN203771744U - Photovoltaic-driven solar active circulating type hot-water system - Google Patents

Photovoltaic-driven solar active circulating type hot-water system Download PDF

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Publication number
CN203771744U
CN203771744U CN201420133522.4U CN201420133522U CN203771744U CN 203771744 U CN203771744 U CN 203771744U CN 201420133522 U CN201420133522 U CN 201420133522U CN 203771744 U CN203771744 U CN 203771744U
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China
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circulating pump
direct current
current circulating
photovoltaic
water
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季杰
王艳秋
袁伟琪
孙炜
郭超
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University of Science and Technology of China USTC
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University of Science and Technology of China USTC
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/44—Heat exchange systems
    • 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

Abstract

The utility model relates to a photovoltaic-driven solar active circulating type hot-water system. The photovoltaic-driven solar active circulating type hot-water system comprises a heat collector array, a first photovoltaic battery pack, a first direct-current circulating pump and a water tank. The first direct-current circulating pump is sequentially connected between a circulating inlet of the heat collector array and a water circulating outlet of the water tank. A circulating outlet of the heat collector is communicated with a water circulating inlet of the water tank. An input power supply end of the first direct-current circulating pump is electrically connected with the first photovoltaic battery pack and driven by the same. Hydraulic characteristics are matched with the first direct-current circulating pump to form volt-ampere characteristics. After the match between the volt-ampere characteristics with volt-characteristics outputted from the first photovoltaic battery pack, the output flow of the first direct-current circulating pump is changed along irradiation changes. The photovoltaic-driven solar active circulating type hot-water system has a starting irradiation of 100-150w/m<2>, needs smaller output flow and is simple and stable. Working cost is free in actual running of the photovoltaic-driven direct-current circulating system in good weather conditions.

Description

The solar energy active cycle formula hot-water heating system that a kind of photovoltaic drives
Technical field
The utility model belongs to solar photoelectric light-heat comprehensive utilization field, is specifically related to the use in conjunction field of photovoltaic generation and solar water heating system.
Background technology
Solar energy is regarded as the future source of energy of tool potentiality, has now become countries in the world and has fallen over each other one of industry of development.China develops the solar energy history of existing decades, and it is ripe that photo-thermal, solar photovoltaic utilization technology are tending towards, and be widely used.Photo-thermal aspect, in China, solar water heating system is accepted extensively by society, is divided into the passive circulatory system and active cycle system by endless form.The passive circulatory system requires storage device setting height(from bottom) higher than heat collector, and it does not need circulation power, and flow is directly proportional with the solar energy of water heater absorption, safeguards very simply, is extensively adopted by society.But this water heater (system) is only suitable in independently small size use, and for large-scale hot water and heating system, or the hot-water heating system that performance requirement is higher, or water tank setting height(from bottom) is not suitable for hot-water heating system higher than heat collector etc., generally all needs to adopt active cycle system.And current hot water-heating of wideling popularize-heat pump refrigerating integral system, the solar water heating system being wherein incorporated to all needs to adopt active cycle mode.The hot-water heating system of current this active cycle is general adopts following control mode: when heat collector top water temperature is during higher than water tank bottom water temperature 5, controller is opened and started circulating pump.This flow system flow is constant, and performance is easily predicted, under similarity condition, can obtain higher water temperature compared with natural cycle system, and is easier to and architecture-integral design and centralized management, and user experiences better.
At present the circulation power of active cycle formula system mostly is civil power, starts and closes circulation according to warm extent.So, system depends on electrical network, and irradiation can cause the frequent open and close of pump when lower, affects lifetime of system.Due to system intermittent cyclic, it is required that circular flow is greater than system all the time.Adopt variable frequency pump to replace and exchange circulating pump, can have in theory good energy-saving effect, but regulate too complexity, the poor stability of technology of circulating pump rotating speed according to intensity of illumination, cost is also very high, does not have economical widely.Being electric energy by sunshine Partial Conversion, as the circulation power of system, directly driving straightway pump, will be a kind of well solution.Chinese patent ZL200710029601.5, ZL201020277225.9, ZL200710030104.7 etc. disclose the system of utilizing solar electrical energy generation then to drive water pump water lift.These systems popular feature is structurally that photovoltaic output needs MPPT controller, need battery and charging-discharging controller, and this system there is no directly related property for demand and the hydraulic characteristic(s) of power with irradiation, thereby photovoltaic electric power is only as the charge power supply of battery, its battery composition and output C-V characteristic there is no direct impact to the performance of system.
Utility model content
Utilize the coupled relation between the output characteristics of hydraulic characteristic, pump and motor characteristic, photovoltaic of hot water cyclesystem in order to realize, the circular flow of system is changed along with the Strength Changes of irradiation, thereby make that the required flow of system is less and electrical power consumed is less and the thermal efficiency is higher, the solar energy active cycle formula hot-water heating system that the utility model provides a kind of photovoltaic to drive.
Concrete technical solution is as follows:
The solar energy active cycle formula hot-water heating system that a kind of photovoltaic drives comprises more than one group collector array 1, the first photovoltaic cell group 2, the first direct current circulating pump 3, water tank 4, described the first direct current circulating pump 3 is connected between the circulation import of more than one group collector array 1 and the outlet of the water circulation of water tank 4, and the loop exit of more than one group collector array 1 and the water circulation import of water tank 4 are communicated with; The input supply terminal of the first direct current circulating pump 3 and the first photovoltaic cell group 2 are electrically connected, and are driven by the first photovoltaic cell group 2; Described every group of collector array 1 is for plate solar collector is by being composed in series, and collector array 1 more than two is by being connected in parallel; Described the first photovoltaic cell group 2 is solar energy single crystal Silicon photrouics group or polysilicon photovoltaic cells group; Described the first direct current circulating pump 3 is the centrifugal circulating pump of brush DC; Described water tank 4 is attemperater; The C-V characteristic that C-V characteristic after the hydraulic characteristic(s) of described solar energy active cycle formula hot-water heating system is mated with the first direct current circulating pump 3 is exported with the first photovoltaic cell group 2 is mated mutually, the output flow of the first direct current circulating pump 3 after coupling is along with irradiation changes and changes, and the starting irradiation of solar energy active cycle formula hot-water heating system is 100～150W/ ㎡.
When the irradiation of described solar energy active cycle formula hot-water heating system is 750～850W/ ㎡, the first direct current circulating pump 3 reaches optimum flow and lift.
Also comprise coil heat exchanger 8, described coil heat exchanger 8 is positioned at water tank 4, described the first direct current circulating pump 3) be connected between the circulation import of more than one group collector array 1 and the sender property outlet of coil heat exchanger 8, the loop exit of more than one group collector array 1 and the working medium import of coil heat exchanger 8 are communicated with.
Also comprise plate type heat exchanger 5, described the first direct current circulating pump 3 is connected between the circulation import of more than one group collector array 1 and the sender property outlet of plate type heat exchanger 5, and the loop exit of more than one group collector array 1 and the working medium import of plate type heat exchanger 5 are communicated with; The water circulation outlet of plate type heat exchanger 5 is being communicated with the water circulation import of water tank 4, the water circulation import of plate type heat exchanger 5 is being communicated with the second direct current circulating pump 6 of connecting between the water circulation outlet of water tank 4, the second direct current circulating pump 6 and the second photovoltaic cell group 7 are electrically connected, and are driven by the second photovoltaic cell group 7; Wherein more than one group collector array 1, plate type heat exchanger 5 and the first direct current circulating pump 3 form primary system, i.e. duplex matter system; Water tank 4, plate type heat exchanger 5 and the second direct current circulating pump 6 form electrical secondary system, i.e. water circulation system; Described the second direct current circulating pump 6 is the centrifugal circulating pump of brush DC.
The design discharge of described primary system be 0.003～0.015L/(㎡ s); The design discharge of described electrical secondary system be 0.008～0.05 L/(㎡ s).
The multiple that the rated operational voltage of described the first direct current circulating pump 3 and the second direct current circulating pump 6 is 3.
The feature of the utility model structural design scheme is described as follows:
1. constructing by existing water-heater system design and construction method of collector array and water tank and pipeline;
2. mate corresponding straightway pump hydraulic characteristic(s) according to the hydraulic characteristic of collector system pipeline.For branch road flow design primary system comparatively uniformly, the design discharge of system is taken at 0.003～0.015L/ (㎡ s), and in the situation that system condition allows, adopts little flow value as far as possible.For electrical secondary system, design flow measure 0.008～0.05 L/ (㎡ s) between.Now, the circulation hydraulic characteristic of system substantially meet H=RQ^2(wherein R value can survey, or calculated according to existing engineering specification by pipeline composition proposal), the best efficiency point of the pump of choosing accordingly should approach as far as possible or meet this formula.As Fig. 2, the drag characteristic curve of system and the intersection point of pump curve are at the pressure point of maximum efficiency place of pump;
3. the selected straightway pump of system uses brushless direct-current water pump as far as possible, and the pump housing has less starting current and wider operating voltage, and preferably 3 multiple of rated operational voltage;
4. according to after the selected pump housing of above principle, the entirety input VA characteristic curve after need to being installed in the circulatory system according to straightway pump mates corresponding the first photovoltaic cell and forms.Specific Principles is that circulating pump circulating pump in the time that irradiation is 100～150W/ ㎡ starts, and starts circulation.In the time that heat collector plane gained irradiation is slightly higher than the mean value of the 8 hours irradiation values of whole day under local fine weather, (as 800 W/ ㎡) direct current circulating pump reaches or approaches the optimum condition of its design;
5. the photovoltaic battery array output that system is mated should meet (1) makes connected circulating pump in the time of 100～150W/ ㎡, start to start circulation, (2) intersection point of the input VA characteristic curve of pump housing output VA characteristic curve under different irradiation from photovoltaic cell is as far as possible near the peak power output point left end of each curve, and when the mean value of (3) 8 hours irradiation values of whole day under the fine weather in locality is slightly high, (as 800 W/ ㎡) reach the best power output of photovoltaic cell.It should be noted that first will to ensure to start irradiation value not excessive.Fig. 3 is a kind of VA characteristic curve after circulation line that is connected to of typical brush DC water pump, shows that DC brushless pump starting current is much larger than its minimum working current in figure.As Fig. 4, (I_PV1000 is the output current of photovoltaic cell under 1000W irradiation, I_PV500 is the output current of photovoltaic cell under 500W irradiation intensity, match condition by that analogy), in the time that irradiation exceedes 500W, pump could start, and after starting, the input voltage of pump changes very little, corresponding also only faint variation of output flow, bad coupling that Here it is, system thermal efficiency is very low, and even whole day obtains hot without significant effective.As shown in Fig. 5, use cell area to double with respect to 4, after pump startup, flow changes along with irradiation is strong and weak, but pump still needs the startup irradiation of 500W, and 500W is difficult to collect with interior irradiation energy, and system whole day hot property reduces more than 40%.As shown in Fig. 6, one of matching way that this uses for the utility model, cell area used is with respect to 5 increase twices, and now pump can start after irradiation exceedes 100W, and after starting, output flow changes along with irradiation.In such cases, system can well have been collected solar heat, and system thermal efficiency and the legacy system thermal efficiency are basically identical even slightly high.As shown in Figure 7, this is another kind of matching way of the present utility model, improve the teaming method of photovoltaic battery array, the system that so both ensured can start circulation in the time of 100W irradiation intensity, and it is more obvious that systemic circulation flow changes with irradiation, systematic function is also better, the more important thing is that the relative Fig. 5 mode of used photovoltaic cell area reduces 25% to 40%.
the utility model useful technique effect compared with prior art embodies in the following areas:
1. the required flow of hot-water heating system is less.Existing hot-water heating system adopts the operation of the mode control hot-water heating system of the opening and closing of temperature difference controlled circulation flow, the circular flow of the system that is in operation is a constant value substantially, for guarantee system still can effectively be collected solar heat in large irradiation situation, the circular flow value of default is bigger than normal within the whole day most of the time, and work as irradiation more as a child, system can go out first the situation of opening and closing frequently.And system in the utility model, its circular flow is along with enhancing and the enhancing of irradiation, and when little irradiation time, flow system flow is just little, and so, the average discharge of system whole day is less.The required flow of system reduces to mean that required pump power is less, and system pipeline caliber used can reduce.With the actual measurement system of 10 ㎡, need the ac pump of about 60W by current engineering specification designed system.But in same comparison system, use the whole day hot property of the straightway pump system of 14W can exceed the system that uses ac pump;
2. system simple and stable, and according to irradiation intensity Self Adaptive Control.System does not need to increase especially controller, without batteries to store energy, without accumulator cell charging and discharging controller, just can normally work together, and can avoid to a great extent the problem that takes place frequently and start and close of the pump occurring in traditional temperature difference control program;
3. System Construction cost may be compared lowlyer, and operation expense is lower.Traditional hot-water heating system needs controller for solar, exchanges circulating pump when driving, and need to access urban distribution network consumption electric energy.Hot-water heating system in the utility model needs solar panel, direct current circulating pump when driving.But because the power of required direct current circulating pump is much smaller than ac pump power, thereby with respect to required ac pump, straightway pump cost may be lower.The driving power required due to system is less, and the photovoltaic cell area being equipped with is very little, and the cost of photovoltaic cell even also may be lower than the cost of controller for solar.Meanwhile, system is in service without consuming alternating current, substantially without operation power charge.Taking certain 10 ㎡ system of actual measurement as example, adopt the hot-water heating system of existing engineering specification, use the pipe-line system of DN15, be equipped with interchange circulating pump and a solar energy system controller of a 90W.Exchange approximately 300 yuan of circulating pump costs, 200 yuan of controller costs.And adopt the direct current circulatory system that photovoltaic drives to use the direct current circulating pump of 14W and the photovoltaic cell of total peak power 32W.Approximately 90 yuan of direct current circulating pump costs, approximately 160 yuan of photovoltaic cell costs.Its total constructions cost has reduced 250 yuan on the contrary, and photovoltaic drive system pops one's head in without connecting sensor, without connecting remote controller, without incoming transport electrical network, circuit connection when installation is more simple and convenient, and cost of labor is installed if calculate, and its construction cost reduces more relatively.In actual motion, when weather is good, adopt the system pump housing of the ac pump about 8h that works every day, the about 90W of power consumption, controller whole day 24h work, the about 10W of power consumption.And the direct current circulatory system that adopts photovoltaic to drive there is no the consumption of operating cost.
Brief description of the drawings
Fig. 1 is the schematic diagram of system.
Fig. 2 is the pump of matched well and the performance diagram of system.
Fig. 3 is that the straightway pump of actual measurement is for the input VA characteristic curve figure of the pump after in the circulatory system.
Fig. 4 is under a kind of bad voltage match condition, the VA characteristic curve figure of photovoltaic cell and system input.
Fig. 5 is in a kind of electric current matched well situation, the VA characteristic curve figure of photovoltaic cell and system input.
Fig. 6 is in a kind of matched well situation, the VA characteristic curve figure of photovoltaic cell and system input.
Fig. 7 is in a kind of matched well situation, improves the photovoltaic cell of structure and the VA characteristic curve figure of system input.
Fig. 8 is the secondary cycle hot-water heating system figure with the photovoltaic driving of coil heat exchanger.
Fig. 9 is the secondary cycle hot-water heating system figure with the photovoltaic driving of plate type heat exchanger.
Sequence number in upper figure: collector array 1, the first photovoltaic cell group 2, the first direct current circulating pump 3, water tank 4, plate type heat exchanger 5, the second direct current circulating pump 6, the second photovoltaic cell group 7, coil heat exchanger 8.
Detailed description of the invention
Below in conjunction with accompanying drawing, by embodiment, the utility model is further described.
Embodiment 1
Referring to Fig. 1, the direct-connected hot-water heating system that a kind of photovoltaic drives.Comprise one group of collector array 1, the first photovoltaic cell group 2, the first direct current circulating pump 3, water tank 4, the first direct current circulating pump 3 is connected between the water circulation import of one group of collector array 1 and the outlet of the water circulation of water tank 4, and the water circulation outlet of one group of collector array 1 and the water circulation import of water tank 4 are communicated with; The input supply terminal of the first direct current circulating pump 3 and the first photovoltaic cell group 2 are electrically connected, and are driven by the first photovoltaic cell group 2.
One group of collector array 1 adopts the flat-plate solar collector of 5 1m × 2m specifications to compose in parallel array, and the water tank 4 of the insulation that the coating steel pipe that adopts DN15 is 750L with volume is connected.The first direct current circulating pump 3 for 5 meters of H-Maxs, maximum stream flow 500L/h, serviceability temperature 100 are spent, rated operational voltage 12V, peak power 14W, the brushless direct-current in 20,000 hours life-spans isolation water pump; All pipelines all need to carry out insulation.
The first photovoltaic cell group 2 can be a or two kinds of structures of b:
The array that the solar energy single crystal Silicon photrouics of a, 8 open-circuit voltage 7.2V, operating voltage 6V, peak power 4.5W is formed in parallel after connecting between two, the total peak power 36W of all batteries;
B, connect to form array by parallel connected array and serial array, its structure chart is as Fig. 8.Wherein part in parallel is an open-circuit voltage 3.6V, operating voltage 3V, the photovoltaic module of short circuit current 1.7A.The photovoltaic cell of wherein series connection part is 13.8V short circuit current 1.7A.The total peak power of battery of whole array is 24.5W.
In the time that the irradiation of solar energy active cycle formula hot-water heating system is 800W/ ㎡, the flow of the first direct current circulating pump 3 is that 0.1L/s, lift are 1.7 meters.
Embodiment 2
Referring to Fig. 8, the secondary cycle hot-water heating system that a kind of photovoltaic drives.Comprise collector array 1, the first photovoltaic cell group 2, the first direct current circulating pump 3, water tank 4 and coil heat exchanger 8.Coil heat exchanger 8 is positioned at water tank 4, the first direct current circulating pumps 3 and is connected between the circulation import of collector array 1 and the sender property outlet of coil heat exchanger 8, and the working medium import of the loop exit of collector array 1 and coil heat exchanger 8 is communicated with.
Wherein collector array 1 by the flat plate collector of 21 1m × 2m every 7 and be unified into a group, then 3 groups are formed in parallel by the galvanized pipe of DN25 again.The effective heat exchange area of coil heat exchanger 8 is 15 square meters.The volume of water tank 4 is 3.5 tons.8 meters of the rated heads of the first direct current circulating pump 3,2 cubic metres of metered flows are per hour, voltage 24V, peak power 180W.The open-circuit voltage of the first photovoltaic cell group 2 is that 30V, short circuit current are 10A.
In the time that the irradiation of solar energy active cycle formula hot-water heating system is 800W/ ㎡, the flow of the first direct current circulating pump 3 is approximately 6 meters of 2.2 cubic metres of per hour, lifts.
Embodiment 3
Referring to Fig. 9, the secondary cycle hot-water heating system that a kind of photovoltaic drives.Comprise collector array 1, the first photovoltaic cell group 2, the first direct current circulating pump 3, water tank 4, plate type heat exchanger 5, the second direct current circulating pump 6 and the second photovoltaic cell group 7; The first direct current circulating pump 3 is connected between the circulation import of collector array 1 and the sender property outlet of plate type heat exchanger 5, and the working medium import of the loop exit of collector array 1 and plate type heat exchanger 5 is communicated with; The water circulation outlet of plate type heat exchanger 5 is being communicated with the water circulation import of water tank 4, the water circulation import of plate type heat exchanger 5 is being communicated with the second direct current circulating pump 6 of connecting between the water circulation outlet of water tank 4, the second direct current circulating pump 6 and the second photovoltaic cell group 7 are electrically connected, and are driven by the second photovoltaic cell group 7; Wherein more than one group collector array 1, plate type heat exchanger 5 and the first direct current circulating pump 3 form primary system, i.e. duplex matter system; Water tank 4, plate type heat exchanger 5 and the second direct current circulating pump 6 form electrical secondary system, i.e. water circulation system; Described the second direct current circulating pump 6 is the centrifugal circulating pump of brush DC.
Wherein collector array 1 by the flat plate collector of 21 1mx2m every 7 and be unified into a group, then 3 groups are formed in parallel by the galvanized pipe of DN25 again.Equivalent heat exchange area approximately 30 square meters of plate type heat exchanger 5.The first direct current circulating pump 3 and the second direct current circulating pump 6 are brushless direct-current circulating pump, and the first photovoltaic cell group 2 and the second photovoltaic cell group 7 are the photovoltaic battery array of polysilicon photovoltaic cells composition.The volume of water tank 4 is 3.5 tons.The first direct current circulating pump 3 is 8 meters of rated heads, metered flow 2 cubic metres of per hour, voltage 24V, peak power 180W.The second direct current circulating pump 6 is that 5 meters of H-Maxs, maximum stream flow 700L are per hour, rated operational voltage is 12V.The open-circuit voltage 30V of the first photovoltaic cell group 2, short circuit current 10A, or series connection part open-circuit voltage 7.2V, short circuit current 5A are formed by connecting according to the mode of Fig. 8 with the array of part open-circuit voltage 29V in parallel, short circuit current 5A.Open-circuit voltage 14.4V, the short circuit current 3.4A of the second photovoltaic cell group 7, or mate according to the scheme b in case 1.
In the time that the irradiation of solar energy active cycle formula hot-water heating system is 800W/ ㎡, the flow of the first direct current circulating pump 3 is that 2.2 cubic metres of per hour, lifts are 6 meters; The flow of the second direct current circulating pump 6 is that 500L/h, lift are 1.6 meters.

Claims (6)

1. the solar energy active cycle formula hot-water heating system that photovoltaic drives, comprise more than one group collector array (1), the first photovoltaic cell group (2), the first direct current circulating pump (3), water tank (4), described the first direct current circulating pump (3) is connected between the circulation import of more than one group collector array (1) and the outlet of the water circulation of water tank (4), and the loop exit of more than one group collector array (1) and the water circulation import of water tank (4) are communicated with; The input supply terminal of the first direct current circulating pump (3) and the electrical connection of the first photovoltaic cell group (2), and driven by the first photovoltaic cell group (2), it is characterized in that: described every group of collector array (1) is for plate solar collector is by being composed in series, and collector array (1) more than two is by being connected in parallel; Described the first photovoltaic cell group (2) is solar energy single crystal Silicon photrouics group or polysilicon photovoltaic cells group; Described the first direct current circulating pump (3) is the centrifugal circulating pump of brush DC; Described water tank (4) is attemperater; C-V characteristic after the hydraulic characteristic(s) of described solar energy active cycle formula hot-water heating system is mated with the first direct current circulating pump (3) is mated mutually with the C-V characteristic of the first photovoltaic cell group (2) output, the output flow of the first direct current circulating pump (3) after coupling is along with irradiation changes and changes, and the starting irradiation of solar energy active cycle formula hot-water heating system is 100～150W/ ㎡.
2. the solar energy active cycle formula hot-water heating system that a kind of photovoltaic according to claim 1 drives, it is characterized in that: when the irradiation of described solar energy active cycle formula hot-water heating system is 750～850W/ ㎡, the first direct current circulating pump (3) reaches optimum flow and lift.
3. the solar energy active cycle formula hot-water heating system that a kind of photovoltaic according to claim 1 drives, it is characterized in that: also comprise coil heat exchanger (8), described coil heat exchanger (8) is positioned at water tank (4), described the first direct current circulating pump (3) is connected between the circulation import of more than one group collector array (1) and the sender property outlet of coil heat exchanger (8), and the loop exit of more than one group collector array (1) and the working medium import of coil heat exchanger (8) are communicated with.
4. the solar energy active cycle formula hot-water heating system that a kind of photovoltaic according to claim 1 drives, it is characterized in that: also comprise plate type heat exchanger (5), described the first direct current circulating pump (3) is connected between the circulation import of more than one group collector array (1) and the sender property outlet of plate type heat exchanger (5), and the loop exit of more than one group collector array (1) and the working medium import of plate type heat exchanger (5) are communicated with; The water circulation outlet of plate type heat exchanger (5) is being communicated with the water circulation import of water tank (4), the water circulation import of plate type heat exchanger (5) is being communicated with the second direct current circulating pump (6) of connecting between the water circulation outlet of water tank (4), the second direct current circulating pump (6) and the electrical connection of the second photovoltaic cell group (7), driven by the second photovoltaic cell group (7); Wherein more than one group collector array (1), plate type heat exchanger (5) and the first direct current circulating pump (3) form primary system, i.e. duplex matter system; Water tank (4), plate type heat exchanger (5) and the second direct current circulating pump (6) form electrical secondary system, i.e. water circulation system; Described the second direct current circulating pump (6) is the centrifugal circulating pump of brush DC.
5. the solar energy active cycle formula hot-water heating system that a kind of photovoltaic according to claim 4 drives, is characterized in that: the design discharge of described primary system be 0.003～0.015L/ (㎡ s); The design discharge of described electrical secondary system be 0.008～0.05L/ (㎡ s).
6. the solar energy active cycle formula hot-water heating system that a kind of photovoltaic according to claim 4 drives, is characterized in that: the multiple that the rated operational voltage of described the first direct current circulating pump (3) and the second direct current circulating pump (6) is 3.
CN201420133522.4U 2014-03-24 2014-03-24 Photovoltaic-driven solar active circulating type hot-water system Withdrawn - After Issue CN203771744U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103851798A (en) * 2014-03-24 2014-06-11 中国科学技术大学 Photovoltaic driven solar active circulating type water heating system
CN107374920A (en) * 2017-07-05 2017-11-24 李俊娇 A kind of solar energy guide vehicle device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103851798A (en) * 2014-03-24 2014-06-11 中国科学技术大学 Photovoltaic driven solar active circulating type water heating system
CN103851798B (en) * 2014-03-24 2015-10-21 中国科学技术大学 The solar energy active cycle formula hot-water heating system that a kind of photovoltaic drives
CN107374920A (en) * 2017-07-05 2017-11-24 李俊娇 A kind of solar energy guide vehicle device

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