CN204597821U - Thermo-electric generation system - Google Patents
Thermo-electric generation system Download PDFInfo
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- CN204597821U CN204597821U CN201520207307.9U CN201520207307U CN204597821U CN 204597821 U CN204597821 U CN 204597821U CN 201520207307 U CN201520207307 U CN 201520207307U CN 204597821 U CN204597821 U CN 204597821U
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Abstract
The utility model discloses a kind of thermo-electric generation system, comprising: solar thermal collection system, heat-storing device, the first heat medium flow are threaded a pipe, the second heat medium flow is threaded a pipe, coolant pipeline, temperature difference electricity generation device, DC/DC converter; The side of heat-storing device is provided with first medium gateway and second medium gateway, and opposite side is provided with delivery outlet and input port; Solar thermal collection system is threaded a pipe by the first heat medium flow and is connected with second medium gateway with first medium gateway respectively; Threaded a pipe by the second heat medium flow and are connected to form circulation circuit in delivery outlet and input port; Second heat medium flow is threaded a pipe and coolant pipeline is arranged alternately; Temperature difference electricity generation device is arranged on the second heat medium flow and threads a pipe and between coolant pipeline; The output of temperature difference electricity generation device is wired to DC/DC converter.Enforcement the beneficial effects of the utility model are, save cost, can achieve and more use on a large scale easily while improving generating efficiency.
Description
Technical field
The utility model relates to solar energy generation technology field, more particularly, relates to a kind of thermo-electric generation system.
Background technology
Along with the development of economy, environment and energy problem increasingly serious, exploitation renewable and clean energy resource, realizes human society and economic sustainable development has become one of important topic of various countries' facing.
Solar light-heat power-generation technology is becoming the leading role of various countries' development new forms of energy.Compared with photovoltaic generation, photo-thermal power generation avoids silicon wafer opto-electronic conversion expensive in photovoltaic generation, has saved cost, has avoided pollution; After next photo-thermal power station daylighting on daytime heat except the direct generation of electricity, also partial heat is stored in huge hold over system simultaneously, accumulation of heat can be utilized night to generate electricity.
Solar light-heat power-generation technology has two classes, and a class utilizes condenser to assemble solar energy, after absorber absorbs, converts heat energy to, produces high-temperature steam or gas and enters turbo generator set or Gas Turbine Generating Units thus produce electric energy.The utilance of this kind of technology to luminous energy is high, and photo-thermal conversion efficiency up to more than 85%, but is still in the laboratory proofing stage at present, and manufacturing cost is high, is not therefore also used on a large scale.Another kind of is solar heat thermo-electric generation, that this kind of generation technology advantage is is convenient, mechanical tumbler, work time noiselessness, pollution-free, but temperature difference device conversion efficiency is low, and low to the efficiency of light energy utilization, is not therefore used on a large scale.On the other hand, another major reason that current thermoelectric generation can not get extensive use is that the electric energy voltage that thermo-electric generation produces is low, spread of voltage, generating poor quality.
Therefore, existing thermoelectric generation existing defects, needs to improve.
Utility model content
The technical problems to be solved in the utility model is, the above-mentioned generation technology for prior art can not meet the defect of high conversion efficiency and low cost simultaneously, provides a kind of thermo-electric generation system.
The utility model solves the technical scheme that its technical problem adopts: construct a kind of thermo-electric generation system, comprise: for transform light energy being become heat energy and the solar thermal collection system heated thermal medium, for storing the heat-storing device of thermal medium, the first heat medium flow for the thermal medium that circulates is threaded a pipe and the second heat medium flow is threaded a pipe, for the coolant pipeline of the coolant that circulates, for the temperature difference electricity generation device generated electricity, direct current power for being produced by temperature difference electricity generation device directly provides the DC/DC converter of galvanic current power after being transformed into the direct current power of coupling,
The side of described heat-storing device is provided with first medium gateway and second medium gateway, and opposite side is provided with delivery outlet and input port;
Described solar thermal collection system is threaded a pipe by described first heat medium flow and is connected with second medium gateway with described first medium gateway respectively;
Threaded a pipe by described second heat medium flow and are connected to form circulation circuit in described delivery outlet and input port;
Described second heat medium flow is threaded a pipe and coolant pipeline is arranged alternately;
Described temperature difference electricity generation device is arranged on described second heat medium flow and threads a pipe and between coolant pipeline;
The output of described temperature difference electricity generation device is wired to described DC/DC converter.
Preferably, described system also comprises and is supplied to the DC/AC converter of load for the storage battery of energy storage with for the alternating electromotive force that direct current power is transformed into assigned frequency;
Described storage battery is connected with described DC/DC converter; Described DC/DC converter is connected with DC/AC converter.
Preferably, described system also comprises: EMS;
Described EMS comprises: controller, the first detector, the second detector and the 3rd detector;
Wherein, the first detector is connected with controller and temperature difference electricity generation device respectively; Second detector is connected with controller and storage battery respectively; 3rd detector is connected with controller and load respectively;
Described first detector, the second detector and the 3rd detector are respectively used to detect described temperature difference electricity generation device peak power output P
tEG, the maximum discharge power that allows of described storage battery and P
bwith the electric power P of described load
l;
Controller will control the operating state of the process of described charge in batteries, the power supply process of described load and described temperature difference electricity generation device according to the testing result of the first detector, the second detector and the 3rd detector.
Preferably, two sides that described second heat medium flow is threaded a pipe are respectively equipped with described coolant pipeline.
Preferably, described solar thermal collection system comprises beam condensing unit and thermal-collecting tube;
Described beam condensing unit is used for sunlight being converged to thermal-collecting tube and heating the thermal medium in thermal-collecting tube;
Described thermal-collecting tube comprises medium input port and medium delivery outlet;
Described medium input port and medium delivery outlet are threaded a pipe by described first heat medium flow and are connected respectively to described first medium gateway and second medium gateway.
Preferably, described beam condensing unit comprises: grooved parabolic reflector;
Described thermal-collecting tube is arranged in the focal line of described grooved parabolic reflector; Described thermal-collecting tube skin is provided with glass bushing; Endothermic tube is provided with in described thermal-collecting tube.
Preferably, described medium delivery outlet is provided with the first temperature sensor, described medium input port is provided with the first circulating pump for the temperature data start/stop according to described first temperature sensor;
Described first temperature sensor is connected with described first circulating pump.
Preferably, described second heat medium flow is threaded a pipe and is provided with for making the second circulating pump of the ducted medium passing of the second medium passing and threading a pipe the second temperature sensor of middle heat medium temperature for detecting the second heat medium flow;
Described second temperature sensor is connected with described second circulating pump.
Preferably, described coolant pipeline is provided with the three-temperature sensor for detecting coolant temperature and the first temperature detect switch (TDS) valve for the temperature data opening/closing according to described three-temperature sensor;
Described three-temperature sensor is connected with the first temperature detect switch (TDS) valve.
Preferably, described first heat medium flow thread a pipe, the second heat medium flow thread a pipe except arrangement temperature difference electricity generation device except place and heat-storing device skin all wrap up heat-barrier material.
Implement thermo-electric generation system of the present utility model, there is following beneficial effect: make use of solar thermal collection system and thermal medium is heated, and the thermal medium after heating is stored, then by the thermal medium slow release that stores on temperature difference electricity generation device; Coolant also circulates in coolant pipeline simultaneously, and temperature difference electricity generation device just can produce electric energy; Electric energy obtains stable voltage output and is supplied to DC-AC converter or charge in batteries after DC-DC converter, improve conversion efficiency and save cost simultaneously, and improve the quality exporting electric energy, solar energy optical-thermal temperature difference electricity generation device can be achieved and more use on a large scale easily.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the structure chart of the thermo-electric generation system of the utility model embodiment;
Fig. 2 is the structural representation of the solar thermal collection system of the utility model embodiment;
Fig. 3 is that DC/DC converter adopts disturbance observation to realize the control flow chart of MPPT;
Fig. 4 is the concrete control flow chart of the EMS of the utility model embodiment.
Embodiment
The utility model is by providing a kind of thermo-electric generation system, and the generation technology solving prior art can not meet the technical problem of high-conversion rate and low cost simultaneously, achieves cost-effective technique effect while improving generating efficiency.
The general thought that the utility model solves the problems of the technologies described above is as follows: utilize condenser to assemble solar energy and transform light energy is become heat energy and stores, then be applied on temperature difference electricity generation device, make it to produce continual electric energy, the output electric energy of temperature difference electricity generation device carried out reasonable management and stored simultaneously, improve conversion efficiency and save cost.
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, now contrast accompanying drawing and describe embodiment of the present utility model in detail.
It is the structure chart of the thermo-electric generation system of the utility model embodiment see Fig. 1, Fig. 1.See Fig. 1, the thermo-electric generation system of the utility model embodiment comprises: for solar energy luminous energy being converted to the solar thermal collection system 100 of heat energy, for the heat-storing device 150 of stored heat medium, the first heat medium flow for the thermal medium that circulates thread a pipe 140 and second heat medium flow thread a pipe 220, for the coolant pipeline 230 of the coolant that circulates, for the temperature difference electricity generation device 240 generated electricity, the direct current power for being generated electricity by temperature difference electricity generation device directly provides the DC/DC converter 320 of galvanic current power after being transformed into the direct current power of coupling.
Wherein, the side of heat-storing device 150 is provided with first medium gateway 152 and second medium gateway 151, and opposite side is provided with delivery outlet 154 and input port 153.Solar thermal collection system 100 is threaded a pipe by the first heat medium flow and 140 to be connected with second medium gateway 151 with first medium gateway 152 respectively.Threaded a pipe by the second heat medium flow and 220 are connected to form circulation circuit in delivery outlet 154 and input port 153.Second heat medium flow thread a pipe 220 and coolant pipeline 230 be arranged alternately.Temperature difference electricity generation device 240 is arranged on the second heat medium flow and threads a pipe between 220 and coolant pipeline 230.The output of temperature difference electricity generation device 240 is wired to DC/DC converter 320.
Thus, temperature difference electricity generation device 240 be placed in the second heat medium flow thread a pipe 220 one end formed temperature end, one end that temperature difference electricity generation device 240 is placed in coolant pipeline 230 forms low-temperature end, and the temperature difference that temperature difference electricity generation device 240 is formed by two ends will produce electric energy.DC/DC converter 320 can provide galvanic current power after the direct current power that temperature difference electricity generation device 240 produces is transformed into the direct current power of coupling.
The thermo-electric generation system of the utility model embodiment adopts solar thermal collection system to improve the utilance of solar heat, adopt rational pipe design pattern, media flow is controlled, decrease loss and the radiation of thermal medium heat, maintain the temperature difference that temperature difference electricity generation device two ends are larger, improve generating efficiency and cost is low.
See Fig. 1, the thermo-electric generation system of the utility model embodiment also comprises: be supplied to the DC/AC converter 340 of load 350 for the storage battery 330 of energy storage with for the alternating electromotive force that direct current power is transformed into assigned frequency.Wherein, storage battery 330 is connected with DC/DC converter 320; DC/DC converter 320 is connected with DC/AC converter 340.DC/DC converter 320 provides galvanic current power to charge for storage battery 330.Direct current power is converted to the alternating electromotive force of assigned frequency for load 350 by DC/AC converter 340.
The thermo-electric generation system of the utility model embodiment also comprises: EMS.This EMS comprises: controller 310, first detector 311, second detector 312 and the 3rd detector 313.Wherein, the first detector 311 is connected with controller 310 and temperature difference electricity generation device 240 respectively; Second detector 312 is connected with controller 310 and storage battery 330 respectively; 3rd detector 313 is connected with controller 310 and load 350 respectively; First detector 311, second detector 312 and the 3rd detector 313 are respectively used to detect temperature difference electricity generation device 240 peak power output P
tEG, storage battery 330 allow maximum discharge power and P
bwith the electric power P of load 350
l; Process, the power supply process of load 350 and the operating state of temperature difference electricity generation device 240 that controller 310 will charge according to the testing result control storage battery 330 of the first detector 311, second detector 312 and the 3rd detector 313.
The thermo-electric generation system of the utility model embodiment, has carried out rational management by EMS to the electric energy exported, thus substantially increases temperature difference electricity generation device and send the utilance of electric energy and export the quality of electric energy.
Below with reference to Fig. 1 and Fig. 2, the thermo-electric generation system of the utility model embodiment is described in detail.
It is the structural representation of the solar thermal collection system of the utility model embodiment see Fig. 2.In the utility model embodiment, solar thermal collection system 100 adopts slot light collection solar thermal collection system, and it adopts grooved parabolic reflector optically focused to assemble heat.Solar thermal collection system 100 comprises grooved parabolic reflector 110, thermal-collecting tube 120, tracing system (non-label) and support (non-label).
Grooved parabolic reflector 110 is by incident solar light focusing on a line of focus, and thermal-collecting tube 120 is arranged in focal line.The optically focused light path of slot light collection solar collector is shown shown in arrow in Fig. 2.Thermal-collecting tube 120 adopts straight-through form, inside has metal heat absorption tube 123, is used for absorbing the inner thermal medium of sunlight heating.Endothermic tube 123 can make of stainless steel, and pipe outer wall scribbles black heat absorbing coating.
Distribute to reduce heat, thermal-collecting tube 120 skin is equipped with glass bushing 124, has space and vacuumize between glass bushing 124 and endothermic tube 123.All thread a pipe with heat medium flow and 140 to be connected in the medium delivery outlet 121 of thermal-collecting tube 120 and medium input port 122, and respectively with heat-storing device 150 side first medium gateway 152 be connected with second medium gateway 151.In order to prevent heat energy from dispersing, heat medium flow thread a pipe 140 with heat-storing device 150 outer layer covers heat-barrier material.
Continue see Fig. 1, thermal-collecting tube 120, heat medium flow are threaded a pipe in 140 and heat-storing device 150 and are all filled thermal medium.The medium delivery outlet 121 of thermal-collecting tube 120 is provided with the first temperature sensor (in figure and not shown), medium input port 122 is provided with the first circulating pump 130 for the temperature data start/stop according to the first temperature sensor.First temperature sensor is connected with the first circulating pump 130.
Also be provided with complementary box (in figure and not shown) above heat-storing device 150, to heat-storing device 150 supplemental heat medium, and the gas in heat-storing device 150 can be got rid of in time by it.When embody rule, thermal medium adopts mineral conduction oil, because the heat accumulation temperature of this oil product can reach 300 DEG C, has the advantages such as quantity of heat storage is large, volatility is little, heat transfer efficiency is high, good stability.
Concrete, solar light irradiation is on grooved parabolic reflector 110, sunlight incident after grooved parabolic reflector 110 is focused onto on a straight line, and thermal-collecting tube 120 is just arranged on this line, so heat the thermal medium of thermal-collecting tube 120 li.First temperature sensor is used in detected set heat pipe 120 by the temperature of thermal medium heated, when the heat medium temperature after heating reaches the first set temperature value, such as when 150 DEG C, first circulating pump 130 will start, make the medium passing after heating, and thread a pipe through heat medium flow and 140 return heat-storing device 150 and store.
See Fig. 1, heat-storing device 150 except side and the first heat medium flow thread a pipe 140 be connected except, opposite side also tool is provided with delivery outlet 154 and input port 153.Delivery outlet 154 and input port 153 are all connected the second heat medium flow and thread a pipe 220, to form circulation circuit.Second heat medium flow is threaded a pipe and 220 to be comprised: for make heat medium flow thread a pipe the medium passing in 220 the second circulating pump 210, to thread a pipe the second temperature sensor (not shown) of heat medium temperature in 220 for detecting heat medium flow.Second temperature sensor connects the second circulating pump 210.Control the second circulating pump 210 by the second temperature sensor, the thermal medium that stores to be threaded a pipe circulation in 220 at heat medium flow.
In the utility model embodiment, coolant pipeline 230 is also provided with three-temperature sensor (not shown) for detecting coolant temperature and for the temperature data opening/closing first temperature detect switch (TDS) valve (not shown) according to three-temperature sensor.Three-temperature sensor connects the first temperature detect switch (TDS) valve.When three-temperature sensor detects that the temperature of coolant in coolant pipeline exceedes the temperature value of setting, the first temperature detect switch (TDS) valve is opened, and coolant is discharged.When embody rule, coolant adopts running water, can be used as domestic hot-water use when the coolant temperature in coolant pipeline 230 reaches certain value after discharging like this, is conducive to joint environmental protection and saves cost.
In the utility model embodiment, the second heat medium flow thread a pipe 220 and coolant pipeline 230 be arranged alternately.Temperature difference electricity generation device 240 is arranged on the second heat medium flow and threads a pipe between 220 and coolant pipeline 230.Preferably, second heat medium flow is threaded a pipe the arrangement of 220 and coolant pipeline 230, arrangement mode as shown in Figure 1 can be adopted, that is: the second heat medium flow thread a pipe 220 output once fewer than the output of coolant pipeline 230, make the second heat medium flow thread a pipe 220 two sides have the existence of coolant pipeline all respectively.Second heat medium flow is threaded a pipe and 220 is only had and have a try, and one-period is arranged, and correspondence the second heat medium flow thread a pipe 220 both sides have the distribution of coolant pipeline 230.The benefit of such setting is: can arrange more temperature difference electricity generation devices 240, thus improves generating capacity.
Preferably, above-mentioned first heat medium flow thread a pipe 140 and second heat medium flow thread a pipe 220 except arrangement temperature difference electricity generation device 240 except place be all wrapped in heat-barrier material, significantly can reduce the thermal medium loss of heat in transport process in the duct, and not pollute ducted thermal source.Coolant pipeline 230 adopts the good pipeline of heat-sinking capability, thus makes the generating efficiency of temperature difference electricity generation device 240 higher.See Fig. 1, the flow direction of coolant can as shown in the arrow in coolant pipeline 230, shown in the arrow that the flow direction of thermal medium can be threaded a pipe in 220 as heat medium flow.Heat-storing device 150 is cool-bag, thus avoids the thermal medium thermal loss after heating.
Specifically, above-mentioned heat-storing device 150 and the second heat medium flow are threaded a pipe inside 220 and are all full of thermal medium, when the second temperature sensor detects that the second heat medium flow threads a pipe the temperature of thermal medium inside 220 lower than set point, for example 120 DEG C, second circulating pump 210 starts, again extract thermal medium out from heat-storing device 150 and be transported to the second heat medium flow and thread a pipe 220, and the lower thermal medium of 220 temperature inside of being threaded a pipe by the second heat medium flow is recovered to heat-storing device 150; When again detect thread a pipe the second heat medium flow the temperature of thermal medium be not less than set point inside 220 time, the second circulating pump 210 quits work.And the running water that circulates inside coolant pipeline, when three-temperature sensor detects that the temperature of water is lower than set point, such as 60 DEG C, the first temperature detect switch (TDS) valve cuts out; When temperature is higher than set point, the first temperature detect switch (TDS) valve is opened, and is discharged by water; When temperature is again lower than set point, the first temperature detect switch (TDS) valve cuts out again; The coolant-temperature gage exported reaches more than 60 DEG C, can be used as domestic hot-water and is used.Thus, temperature difference electricity generation device 240 just produces electric energy.
Further, the direct current that temperature difference electricity generation device 240 produces is connected to DC/DC converter 320 by wire 300.The direct current that DC/DC converter 320 pairs of temperature difference electricity generation devices produce boosts or step-down, converts thereof into the direct current of coupling.In addition, DC/DC converter 320 carries out maximal power tracing control (MPPT control), makes the generation power in temperature difference electricity generation device 150 maximum.The direct current power of coupling is supplied to storage battery 330 and charges or be supplied to follow-up DC/AC converter 340 by DC/DC converter 320.DC/AC converter 340 can directly provide direct current power to use to DC load or the alternating electromotive force that converts assigned frequency to is supplied to AC load and uses.
In addition, DC/DC converter 320 is also monitored the capacity of storage battery 330, and then carries out charge and discharge protecting to storage battery 330, prevents storage battery 330 from overcharging or over-discharge can.
Preferably, DC/DC converter 320 adopts disturbance observation to realize MPPT, concrete control flow chart as indicated at 3, first as shown in step S11, read the initial power Pi-1 of temperature difference electricity generation device 240, and disturbance in addition, then as shown in step S12, the operating current of reading device and voltage, then as shown in step S13, calculate the power output Pi after disturbance again, then the size that step S14 compares power output Pi-1 and the Pi before and after interference is performed, if power output increases, then perform step S15, continue original disturbance voltage; If detect that power output reduces, then perform step S16, change the direction of disturbance.Corresponding pwm signal is sent according to above judged result, the real work point of such temperature difference electricity generation device 240 will move closer to current maximum power point, and finally in a less scope, back and forth reach stable state, after this return step S12, below repeat work.
In the utility model embodiment, valve controlled sealed lead-acid accumulator (VRLA) selected by storage battery 330, this battery adopts sealing result, the phenomenons such as the gas that there is not common lead acid accumulator rises, solution leakage, safe and reliable, the life-span is long, without the need to detect electrolyte and acid adjustment adds water during normal operation, there is the feature of " non-maintaining ".
See Fig. 4, the concrete control flow chart of the EMS of the utility model embodiment.As shown in Figure 4: first, perform step S211, the first detector 311, second detector 312 and the 3rd detector 313 detect temperature difference electricity generation device 240 peak power output P respectively
tEG, storage battery 330 allow maximum discharge power and P
bwith the electric power P of load 350
l, to confirm that can temperature difference electricity generation device 240 to load supplying; Perform step S212, judge P
land P
tEGsize: if P
l<P
tEG, then perform S213 and detect storage battery 330 capacity, and judge whether to charge according to the capacity of storage battery 330, and return step S212; If P
l>P
tEG, then step S214 is performed; According to the judged result of S214, work as P
l>P
b+ P
tEG, then disconnecting consumers, and return step S213; Work as P
tEG<P
l<P
b+ P
tEG, then perform step S216 and detect storage battery 330 capacity, as storage battery 330 capacity lower than during the minimum discharge capacity pre-set then disconnecting consumers 350 stop power supply, and make temperature difference electricity generation device 240 be in MPPT operating state; As discharged higher than then performing S219 during minimum discharge capacity, and making temperature difference electricity generation device 240 be in MPPT operating state, finally returning to step S212, below repeating work.Preferably, the charging modes of VRLA storage battery 330 selects the charging of three stages, detects the result of battery capacity, select different charging modes according to step S213; When battery capacity is less than 80%, then perform step S224 and make temperature difference electricity generation device 240 be in MPPT operating state; When battery capacity 80%<SOC<95% then overcharges storage battery; Floating charge is carried out when capacity is greater than 95%; For triphasic charging modes, be all finally return step S212, repeat work.
Should understand, controller 310 is realized (such as by hardware entities, CPU), flow process shown in Fig. 4 can be cured as module by it, thus, only need the first detector 311, second detector 312 to be connected with controller 310 with the 3rd detector 313, controller 310 can realize controlling according to the testing result of the first detector 311, second detector 312 and the 3rd detector 313 process, the power supply process of load 350 and the operating state of temperature difference electricity generation device 240 that storage battery 330 charges.
Specifically, the direct current of the instability that temperature difference electricity generation device 240 sends inputs DC/DC converter 320 by wire 300, namely DC/DC converter 320 can realize boosting to input direct voltage or step-down, and temperature difference electricity generation device 240 can be made to always work near maximum power point.Preferably, the voltage conversion circuit of DC/DC converter 320 is Cuk circuit, make it be operated near maximum power point by the duty ratio changing Cuk circuit, and can boost or step-down to input voltage as required, also can realize the discharge and recharge of storage battery simultaneously.Cuk circuit is prior art, and its principle and advantage is not described in detail in this.
In addition, DC/DC converter 320 moment monitors the load condition of storage battery 330, prevents from overcharging or over-discharge can.Controller 310 manages according to the testing result of detector (the first detector 311, second detector 312 and the 3rd detector 313) energy, and management substantially increases the energy utilization rate of system like this.
The output direct current of DC/DC converter 320 is directly supplied to DC/AC converter 340.DC/AC converter 340 is made up of with the reactor (filter) that full-bridge circuit is connected therewith single-phase full-bridge circuit, and each (arm) forming full-bridge is connected with switch element and diodes in parallel.Thus, can the direct current power from DC/DC converter 320 being converted to alternating electromotive force, by being provided for the pwm signal exporting doubtful sine wave to 4 transistors forming full-bridge circuit, just can adjust output power and frequency.Output power is supplied to load 350 by DC/AC converter 340.
In sum, the utility model embodiment provides thermo-electric generation system, adopt solar thermal collection system to improve the utilance of solar heat, adopt rational pipe design pattern, media flow is controlled, decrease loss and the radiation of thermal medium heat, maintain the temperature difference that temperature difference electricity generation device two ends are larger, improve the output of battery, and rational management has been carried out to the electric energy exported, save cost while improving conversion efficiency, and improve the quality exporting electric energy.In addition, the thermo-electric generation system of the utility model embodiment efficiently utilizes the heat of heat medium after solar energy heat build-up, and not heat source of pollution, can recycle for a long time, do not need to transform thermal source, automation is strong, and has carried out rational management to energy, the output quality of power supply is increased substantially, and saving cost can realize solar energy optical-thermal thermo-electric generation and more use on a large scale easily.
By reference to the accompanying drawings embodiment of the present utility model is described above; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; do not departing under the ambit that the utility model aim and claim protect, also can make a lot of form, these all belong within protection of the present utility model.
Claims (10)
1. a thermo-electric generation system, it is characterized in that, comprise: for transform light energy being become heat energy and the solar thermal collection system (100) heated thermal medium, for storing the heat-storing device (150) of thermal medium, the first heat medium flow for the thermal medium that circulates is threaded a pipe (140) and the second heat medium flow is threaded a pipe (220), for the coolant pipeline (230) of the coolant that circulates, for the temperature difference electricity generation device (240) generated electricity, the DC/DC converter (320) of galvanic current power is directly provided after the direct current power for being produced by temperature difference electricity generation device (240) is transformed into the direct current power of coupling,
The side of described heat-storing device (150) is provided with first medium gateway (152) and second medium gateway (151), and opposite side is provided with delivery outlet (154) and input port (153);
Described solar thermal collection system (100) by described first heat medium flow thread a pipe (140) be connected with second medium gateway (151) with described first medium gateway (152) respectively;
Described delivery outlet (154) and input port (153) by described second heat medium flow thread a pipe (220) be connected to form circulation circuit;
Described second heat medium flow is threaded a pipe (220) and coolant pipeline (230) is arranged alternately;
Described temperature difference electricity generation device (240) is arranged on described second heat medium flow and threads a pipe (220) and between coolant pipeline (230);
The output of described temperature difference electricity generation device (240) is wired to described DC/DC converter (320).
2. thermo-electric generation system according to claim 1, it is characterized in that, described system also comprises and is supplied to the DC/AC converter (340) of load (350) for the storage battery (330) of energy storage with for the alternating electromotive force that direct current power is transformed into assigned frequency;
Described storage battery (330) is connected with described DC/DC converter (320); Described DC/DC converter (320) is connected with DC/AC converter (340).
3. thermo-electric generation system according to claim 2, is characterized in that, described system also comprises: EMS;
Described EMS comprises: controller (310), the first detector (311), the second detector (312) and the 3rd detector (313);
Wherein, the first detector (311) is connected with controller (310) and temperature difference electricity generation device (240) respectively; Second detector (312) is connected with controller (310) and storage battery (330) respectively; 3rd detector (313) is connected with controller (310) and load (350) respectively;
Described first detector (311), the second detector (312) and the 3rd detector (313) are respectively used to detect described temperature difference electricity generation device (240) peak power output P
tEG, the maximum discharge power that allows of described storage battery (330) and P
bwith the electric power P of described load (350)
l;
Controller (310) will control described storage battery (330) and charges process, the power supply process of described load (350) and the operating state of described temperature difference electricity generation device (240) according to the testing result of the first detector (311), the second detector (312) and the 3rd detector (313).
4. thermo-electric generation system according to claim 1, is characterized in that, thread a pipe two sides of (220) of described second heat medium flow are respectively equipped with described coolant pipeline (230).
5. thermo-electric generation system according to claim 1, is characterized in that, described solar thermal collection system (100) comprises beam condensing unit (110) and thermal-collecting tube (120);
Described beam condensing unit (110) is for converging to thermal-collecting tube (120) and heating the thermal medium in thermal-collecting tube (120) by sunlight;
Described thermal-collecting tube (120) comprises medium input port (122) and medium delivery outlet (121);
Described medium input port (122) and medium delivery outlet (121) by described first heat medium flow thread a pipe (140) be connected respectively to described first medium gateway (152) and second medium gateway (151).
6. thermo-electric generation system according to claim 5, is characterized in that, described beam condensing unit (110) comprising: grooved parabolic reflector;
Described thermal-collecting tube (120) is arranged on described grooved parabolic reflector (in the focal line of (110); Described thermal-collecting tube (120) skin is provided with glass bushing (124); Endothermic tube (123) is provided with in described thermal-collecting tube (120).
7. thermo-electric generation system according to claim 5, it is characterized in that, described medium delivery outlet (121) is provided with the first temperature sensor, described medium input port (122) is provided with the first circulating pump (130) for the temperature data start/stop according to described first temperature sensor;
Described first temperature sensor is connected with described first circulating pump (130).
8. thermo-electric generation system according to claim 1, it is characterized in that, described second heat medium flow thread a pipe (220) be provided with second circulating pump (210) of the medium passing for making the second heat medium flow thread a pipe in (220) and thread a pipe the second temperature sensor of heat medium temperature in (220) for detecting the second heat medium flow;
Described second temperature sensor is connected with described second circulating pump (210).
9. thermo-electric generation system according to claim 1, it is characterized in that, described coolant pipeline (230) is provided with the three-temperature sensor for detecting coolant temperature and the first temperature detect switch (TDS) valve for the temperature data opening/closing according to described three-temperature sensor;
Described three-temperature sensor is connected with the first temperature detect switch (TDS) valve.
10. thermo-electric generation system according to claim 1, it is characterized in that, described first heat medium flow is threaded a pipe (140), the second heat medium flow is threaded a pipe (220) except arrangement temperature difference electricity generation device (240) place and heat-storing device (150) skin all wrap up heat-barrier material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN106123363A (en) * | 2016-06-30 | 2016-11-16 | 上海第二工业大学 | A kind of system improving solar generator generating efficiency based on nano-fluid |
| CN106655894A (en) * | 2017-02-21 | 2017-05-10 | 邵阳学院 | Multi-heat-source thermoelectric power generation system |
| CN108471259A (en) * | 2018-03-22 | 2018-08-31 | 李克文 | A kind of solar water heater power generator |
| CN108649838A (en) * | 2018-04-13 | 2018-10-12 | 东南大学 | A kind of lunar soil source temperature difference electricity generation device |
| CN108667347A (en) * | 2018-04-13 | 2018-10-16 | 东南大学 | A kind of accumulating type temperature difference electricity generation device for moon base station |
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| CN106123363A (en) * | 2016-06-30 | 2016-11-16 | 上海第二工业大学 | A kind of system improving solar generator generating efficiency based on nano-fluid |
| CN106655894A (en) * | 2017-02-21 | 2017-05-10 | 邵阳学院 | Multi-heat-source thermoelectric power generation system |
| CN106655894B (en) * | 2017-02-21 | 2018-07-24 | 邵阳学院 | A kind of multi-heat source thermo-electric generation system |
| CN108471259A (en) * | 2018-03-22 | 2018-08-31 | 李克文 | A kind of solar water heater power generator |
| CN108649838A (en) * | 2018-04-13 | 2018-10-12 | 东南大学 | A kind of lunar soil source temperature difference electricity generation device |
| CN108667347A (en) * | 2018-04-13 | 2018-10-16 | 东南大学 | A kind of accumulating type temperature difference electricity generation device for moon base station |
| CN109343648A (en) * | 2018-09-28 | 2019-02-15 | 江苏大学 | A kind of MPPT on-line control system based on novel open circuit voltage method |
| CN111917335A (en) * | 2020-06-29 | 2020-11-10 | 天津商业大学 | Non-uniform flow velocity composite thermoelectric generator based on thermoelectric material temperature dependency |
| CN111917336A (en) * | 2020-06-29 | 2020-11-10 | 天津商业大学 | Thermoelectric material semiconductor characteristic-based non-uniform reinforced fin thermoelectric generator |
| CN111917336B (en) * | 2020-06-29 | 2022-05-24 | 天津商业大学 | Thermoelectric material semiconductor characteristic-based non-uniform reinforced fin thermoelectric generator |
| CN113484790A (en) * | 2021-05-18 | 2021-10-08 | 杭州海关技术中心 | Energy-saving lamp service life and reliability test system |
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