CN112781258A - Solar heat collection system control method and solar heat collection system - Google Patents
Solar heat collection system control method and solar heat collection system Download PDFInfo
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- CN112781258A CN112781258A CN202010066025.7A CN202010066025A CN112781258A CN 112781258 A CN112781258 A CN 112781258A CN 202010066025 A CN202010066025 A CN 202010066025A CN 112781258 A CN112781258 A CN 112781258A
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 239000007788 liquid Substances 0.000 claims abstract description 35
- 238000001514 detection method Methods 0.000 claims abstract description 23
- 239000012530 fluid Substances 0.000 claims abstract description 8
- 238000001802 infusion Methods 0.000 claims abstract description 4
- 230000005855 radiation Effects 0.000 claims description 21
- 239000002699 waste material Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000007423 decrease Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S50/00—Arrangements for controlling solar heat collectors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a solar heat collection system control method and a solar heat collection system, which comprise the following steps: a pressure detection step comprising: detecting a system pressure value, and performing fluid infusion control when the system pressure value is smaller than a pressure set value; a temperature detection step comprising: and detecting the temperature of the heat collector, and entering an intermittent cycle control step when the temperature of the heat collector is greater than a first set temperature T1. According to the control method of the solar heat collection system, intelligent circulation control is executed from two aspects of pressure detection and temperature detection, the problem of idling of the circulating pump caused by insufficient pressure and air resistance is solved, and electric energy waste is avoided. The circulating liquid is circulated, the temperature of the heat collector is reduced, and the heat collected by the heat collector is effectively utilized.
Description
Technical Field
The invention belongs to the technical field of heating, and particularly relates to a solar heat collection system and a control method thereof.
Background
When the solar heat collection system is subjected to high-temperature closed sunning, the temperature in the heat collector is higher and higher, and parts of the heat collector are damaged or the performance of the heat collector is reduced. Meanwhile, the pressure in the heat collector is increased to open the pressure relief valve, so that the heat conducting medium in the system is lost. The heat in the heat collector can not be effectively utilized, and energy waste is caused.
In order to solve the problems, the current main solving mode adopts a mode of opening a circulating pump, and temperature difference heat exchange circulation is carried out as long as the temperature of a heat collector and the temperature of a water tank accord with the opening condition of the circulating pump. Because the heat collector temperature is too high to make the heat-conducting medium gasification produce the air lock, even if open the circulating pump because the effect heat-conducting medium of air lock can't circulate, therefore the circulating pump idle running, can't reach the heat transfer effect, the heat collector temperature lasts high temperature always, and the circulating pump lasts idle running, and it is more to consume the electric quantity.
Disclosure of Invention
The invention provides a control method of a solar heat collection system, which aims at solving the technical problem that energy is wasted due to idling of a circulating pump because circulating liquid is gasified to generate air resistance when a heat collector of the conventional solar heat collection system is exposed to high temperature.
In order to realize the purpose of the invention, the invention is realized by adopting the following technical scheme:
a solar energy heat collection system control method comprises the following steps:
a pressure detection step comprising: detecting a system pressure value, and performing fluid infusion control when the system pressure value is smaller than a pressure set value;
a temperature detection step comprising: and detecting the temperature of the heat collector, and entering an intermittent cycle control step when the temperature of the heat collector is greater than a first set temperature T1.
Further, the discontinuous cycle control includes:
driving the circulating liquid to continuously circulate, and timing the continuous circulating time;
when the continuous circulation time is not less than the first set time t1, stopping driving circulation of the circulating liquid, timing the stop circulation time, and adding 1 to the circulation times;
and when the circulation times reach the set circulation times, exiting the intermittent circulation control step.
Further, when the circulation frequency does not reach the set circulation frequency, whether the stop circulation time is not less than a second set time t2 is judged, if yes, the step of driving the circulation liquid to continuously circulate is returned, otherwise, the step of driving the circulation liquid to continuously circulate is returned after the requirement is waited.
Further, after the intermittent circulation control step is exited, the collector temperature is detected again, and the main circulation control is executed when the collector temperature is less than the second set temperature T2.
Further, after the discontinuous cycle control step is exited, when the temperature of the heat collector is not less than the second set temperature T2, the sun-shading curtain is controlled to be opened to shade the heat collector.
Further, after the sunshade screen is opened, the collector temperature is periodically detected, and the main cycle control is executed when the collector temperature is less than the second set temperature T2.
Further, after the sunshade screen is opened, the temperature difference of the heat collector temperatures before and after the sunshade screen is opened is calculated, and when the temperature difference is greater than a third set temperature T3, the sunshade screen is closed.
Furthermore, the intermittent cycle control process also comprises the steps of detecting the temperature of the heat collector, and when the temperature of the heat collector is less than a second set temperature T2, exiting the intermittent cycle control and executing the main cycle control.
Further, before entering the intermittent cycle control step, the method also comprises a step of counting the solar radiation amount within the set time, when the solar radiation amount is smaller than the set threshold, the method does not enter the intermittent cycle control step, and returns to the temperature detection step after waiting for the third set time t 3.
Further, the method also comprises a step of periodically detecting the intensity of the solar radiation, when the intensity of the solar radiation is in a descending trend in a plurality of periods and the solar radiation amount is less than a set threshold value, the method does not enter an intermittent cycle control step, and returns to the temperature detection step after waiting for a third set time t 3.
The invention also provides a solar heat collection system, which comprises a heat collector, a heat exchange device and a circulating pipeline, wherein the circulating pipeline is connected between the heat collector and the heat exchange device, circulating liquid is filled in the circulating pipeline, a circulating pump for driving the circulating liquid to circularly flow in the circulating pipeline is also arranged in the circulating pipeline, and the solar heat collection system executes control according to the control method of the solar heat collection system.
Compared with the prior art, the invention has the advantages and positive effects that: according to the control method of the solar heat collection system, the circulating control is executed from the two aspects of pressure detection and temperature detection, the problem of idling of the circulating pump caused by insufficient pressure and air resistance is solved, and electric energy waste is avoided. The circulating liquid is circulated, the temperature of the heat collector is reduced, and the heat collected by the heat collector is effectively utilized.
Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural composition diagram of a solar heat collection system proposed by the present invention;
fig. 2 is a control flowchart of an embodiment of a control method of a solar energy collection system according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and examples.
It should be noted that the terms "first" and "second" in the description of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In a first embodiment, as shown in fig. 1, the solar heat collecting system includes a heat collector 11, a heat exchanging device (e.g., a water tank 12 filled with water), and a circulation pipeline 13, where the circulation pipeline 13 is connected between the heat collector 11 and the heat exchanging device 12, a circulation fluid is filled in the circulation pipeline 13, a circulation pump 14 is further disposed in the circulation pipeline 13, the circulation pump 14 drives the circulation fluid to circularly flow in the circulation pipeline 13, the circulation fluid is a heat conducting medium, and the heat collector 11 is configured to collect heat in solar energy and transport the heat to the water tank 12 for heating water or to other places to be heated through the circulation fluid.
The solar collector system aims to solve the problem that when a solar collector is subjected to high-temperature stuffy sunning, the temperature in the solar collector rises, and partial components of the solar collector are damaged or the performance of the solar collector is reduced. Meanwhile, the pressure inside the heat collector is increased to open the pressure relief valve, so that the technical problem that the heat-conducting medium in the system runs off is solved, and the embodiment provides a control method of a solar heat collection system, which comprises the following steps as shown in fig. 1 and fig. 2:
a pressure detection step comprising: detecting a system pressure value, and performing fluid infusion control when the system pressure value is smaller than a pressure set value; when the circulating liquid is subjected to high-temperature closed sunning, the circulating liquid is gasified, the pressure in the circulating pipeline 13 is increased, the pressure relief valve is opened, gaseous circulating liquid is caused to run off, and after the temperature of the system is reduced, the pressure of the system is reduced at the same time, so that the circulating liquid cannot flow circularly due to insufficient pressure after the circulating pump 14 is opened.
Another reason why the circulating liquid cannot circulate is air resistance, and the gaseous circulating liquid blocks the circulation, so that the method needs further temperature detection.
A temperature detection step comprising: and detecting the temperature of the heat collector 11, and entering an intermittent cycle control step when the temperature of the heat collector 11 is greater than a first set temperature T1.
It is understood that the first set temperature T1 is a value greater than 0, and is appropriately set according to the vaporization temperature of the circulating liquid.
When the temperature in the heat collector 11 is high (for example, over 110 degrees), the circulating liquid in the heat collector 11 is gasified and has a high pressure, and at this time, even if the circulating pump 14 is turned on, the circulating liquid is still, and the heat in the heat collector 11 can not be brought out. Meanwhile, the circulating pump 14 idles all the time, and much electricity is consumed in vain.
According to the control method of the solar heat collection system, the circulation control is executed from the two aspects of pressure detection and temperature detection, the problem of idling of the circulating pump caused by insufficient pressure and air resistance is solved, and electric energy waste is avoided. The circulating liquid is circulated, the temperature of the heat collector is reduced, and the heat collected by the heat collector is effectively utilized.
When the circulating system has air resistance, because the temperature of different parts of the circulating pipeline 13 is different, the pressure inside the system is unbalanced, and the intermittent circulation control is that the circulating pump 14 is controlled to be started for a period of time and then stopped for a period of time, and then the circulating pump is started again, so that the circulation is controlled, the purpose is to disturb the flow of the gaseous circulating liquid to a low-pressure and low-temperature place, the corresponding gaseous circulating liquid is condensed and liquefied, the pressure of the part with the air resistance is reduced, and the circulating liquid can flow.
The preferred discontinuous cycle control step in this embodiment includes:
driving the circulating liquid to continuously circulate, and timing the continuous circulating time;
when the continuous circulation time is not less than the first set time t1, stopping driving circulation of the circulating liquid, timing the stop circulation time, and adding 1 to the circulation times;
and when the circulation times reach the set circulation times, exiting the intermittent circulation control step.
It is understood that the first set time t1 may be any value greater than 0, and the set number of cycles should be a positive integer.
The intermittent circulation control can play a certain promoting role in reducing the local pressure, but can not circulate for an infinite number of times to prevent the waste of electric energy. Therefore, by setting the cycle number, the optimal expected technical effect is obtained while energy conservation is met.
And when the circulation frequency does not reach the set circulation frequency, judging whether the stop circulation time is not less than a second set time t2, if so, returning to the step of driving the circulation liquid to continuously circulate, otherwise, returning to the step of driving the circulation liquid to continuously circulate after waiting for the satisfaction. This step can cause the circulation control to control the circulation pump to start or stop according to the set time.
It is understood that the second set time t2 may be any value greater than 0, and in the present embodiment, it is preferable to set the first set time t1 and the second set time t2 according to the negative pressure generated in the circulation line 13 by the impeller when the circulation pump 14 rotates and the degree of pressure imbalance in the circulation line 13. Through reasonable calculation configuration, the technical effect of energy conservation and circulating flow of circulating liquid is achieved.
After the interrupted cycle control step is exited, the temperature of the heat collector 11 is detected again, and if the aforementioned cycle step is effected, the temperature of the heat collector 11 is lowered, so that by detecting the temperature of the heat collector 11 again, when the temperature of the heat collector 11 is less than the second set temperature T2, the main cycle control can be executed. At which temperature the circulating liquid can be circulated.
It is understood that the second set temperature T2 is a value greater than 0, and is appropriately set according to the vaporization temperature of the circulating liquid.
After the interrupted loop control step is exited, when the collector temperature is not less than the second set temperature T2, it indicates that the aforementioned loop step is not effective, which reflects that the current temperature of the collector 11 should be in the ultra-high temperature state, and the interrupted loop control has not been effective. Meanwhile, the current strong solar illumination is reflected, so that the heat collector 11 is heated to a high temperature, and therefore, the sunshade curtain is controlled to be opened to shield the heat collector 11 in the scheme, so that the heat collector 11 is cooled physically. After the sunshade curtain is opened, the heat collector 11 cannot be illuminated, and the temperature naturally decreases.
When the temperature of the heat collector 11 falls below the second set temperature T2, the intermittent cycle control step is executed again.
The temperature reduction rate of the heat collector 11 is related to the light intensity and the initial temperature value, the time for reducing the temperature to the target temperature is different under different conditions, and in order to prevent long waiting time and accurately control the opening of the circulating pump, it is preferable in this embodiment to periodically detect the temperature of the heat collector 11 after the sunshade screen is opened, and to execute the main circulation control when the temperature of the heat collector 11 is less than the second set temperature T2. The detection period can be set according to actual needs, and theoretically, the smaller the detection period is, the more accurate the control is.
After the sunshade screen is opened, the temperature difference of the heat collector 11 before and after the sunshade screen is opened is calculated, and when the temperature difference is larger than a third set temperature T3, the temperature of the heat collector 11 is reduced to a normal range, and the sunshade screen is closed. Meanwhile, the system can be controlled to enter into execution of main cycle control, and normal system operation is recovered.
In order to reduce the energy consumption caused by the intermittent cycle, in the intermittent cycle control process, the heat collector temperature is detected, when the heat collector temperature is lower than a second set temperature T2, the set intermittent cycle number does not need to be finished, the temperature of the heat collector 11 is reduced to a normal range, and at this time, the intermittent cycle control is quitted, and the main cycle control is executed.
In order to further reduce the energy consumption caused by the intermittent cycle, since the high temperature of the heat collector 11 is caused by the excessive solar radiation, in the method, it is preferable to count the solar radiation amount at the same time of the intermittent cycle, and if the radiation is decreased, it is indicated that the solar radiation is weakened, the intermittent cycle control is not executed temporarily, and it is sufficient to wait for the natural decrease of the temperature of the heat collector 11 due to the weakening of the radiation intensity.
Therefore, the method further comprises: before entering the discontinuous cycle control step, the method also comprises a step of counting the solar radiation amount within the set time, when the solar radiation amount is smaller than the set threshold value, the method does not enter the discontinuous cycle control step, and returns to the temperature detection step after waiting for the third set time t 3.
In order to improve the accuracy of the solar radiation amount control, the temporary low solar radiation amount caused by the fact that the sun is shielded by the cloud may occur, the method further comprises the step of periodically detecting the solar radiation intensity, when the solar radiation intensity is in a descending trend within a plurality of periods and the solar radiation amount is smaller than a set threshold value, the method does not enter the discontinuous cycle control step, and returns to the temperature detection step after waiting for a third set time t 3. The method can be suitable for controlling any weather condition by detecting the solar radiation intensity in a certain time period, and improves the control precision.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (10)
1. A solar heat collection system control method is characterized by comprising the following steps:
a pressure detection step comprising: detecting a system pressure value, and performing fluid infusion control when the system pressure value is smaller than a pressure set value;
a temperature detection step comprising: and detecting the temperature of the heat collector, and entering an intermittent cycle control step when the temperature of the heat collector is greater than a first set temperature T1.
2. The solar energy collection system control method according to claim 1, wherein the discontinuous cycle control includes:
driving the circulating liquid to continuously circulate, and timing the continuous circulating time;
when the continuous circulation time is not less than the first set time t1, stopping driving circulation of the circulating liquid, timing the stop circulation time, and adding 1 to the circulation times;
and when the circulation times reach the set circulation times, exiting the intermittent circulation control step.
3. The solar heat collection system control method according to claim 2, wherein when the cycle number does not reach the set cycle number, it is determined whether the stop cycle time is not less than a second set time t2, and when the stop cycle time is not less than the second set time t2, the step of driving the circulating liquid to continuously circulate is returned, otherwise, the step of driving the circulating liquid to continuously circulate is returned after waiting for the stop cycle time to be satisfied.
4. The solar heat collection system control method according to claim 2, wherein the collector temperature is detected again after the interrupted-cycle control step is exited, and the main-cycle control is performed when the collector temperature is less than a second set temperature T2.
5. The solar heat collection system control method according to claim 4, wherein after the discontinuous cycle control step is exited, when the collector temperature is not less than the second set temperature T2, the sunshade curtain is controlled to be opened to shade the collector.
6. The solar heat collection system control method according to claim 5, wherein the collector temperature is periodically detected after the sunshade is opened, and the main cycle control is performed when the collector temperature is less than the second set temperature T2.
7. The solar heat collecting system control method as claimed in claim 6, wherein after the sunshade is opened, a temperature difference of the collector temperatures before and after the sunshade is opened is calculated, and when the temperature difference is greater than a third set temperature T3, the sunshade is closed.
8. The solar heat collection system control method according to any one of claims 1 to 7, further comprising a step of counting the solar irradiation amount within a set time before entering the intermittent cycle control step, when the solar irradiation amount is less than a set threshold, not entering the intermittent cycle control step, and returning to the temperature detection step after waiting for a third set time t 3.
9. The solar heat collection system control method according to claim 8, further comprising a step of periodically detecting the intensity of solar radiation, when the intensity of solar radiation is in a descending trend within a plurality of periods and the solar radiation amount is less than a set threshold value, the step of discontinuous cycle control is not performed, and the step of temperature detection is performed after waiting for a third set time t 3.
10. A solar heat collection system comprises a heat collector, a heat exchange device and a circulating pipeline, wherein the circulating pipeline is connected between the heat collector and the heat exchange device, circulating liquid is filled in the circulating pipeline, and a circulating pump for driving the circulating liquid to circularly flow in the circulating pipeline is further arranged in the circulating pipeline, and the solar heat collection system is controlled according to the control method of the solar heat collection system in any one of claims 1 to 9.
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| CN202010066025.7A CN112781258B (en) | 2020-01-20 | 2020-01-20 | Solar heat collection system control method and solar heat collection system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117366889A (en) * | 2023-12-06 | 2024-01-09 | 胜利油田胜兴集团有限责任公司 | Pressure control-based heat pipe type solar monitoring and early warning system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005308325A (en) * | 2004-04-22 | 2005-11-04 | Daikin Ind Ltd | Refrigeration unit |
| JP2007064500A (en) * | 2005-08-29 | 2007-03-15 | Noritz Corp | Heating device |
| CN102155759A (en) * | 2011-05-10 | 2011-08-17 | 天津市光翼环保科技有限公司 | Solar water heating system and running method thereof |
| CN105180477A (en) * | 2015-09-23 | 2015-12-23 | 上海交通大学 | Running monitoring system and method for large solar heat collection system |
| CN205783889U (en) * | 2016-05-25 | 2016-12-07 | 天津大学 | A kind of controlling temp type flat-plate solar heat collector |
| CN107490198A (en) * | 2017-07-31 | 2017-12-19 | 国网天津节能服务有限公司 | A kind of energy control strategy based on solar energy, heat pump complementation heat storage boiler |
-
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- 2020-01-20 CN CN202010066025.7A patent/CN112781258B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005308325A (en) * | 2004-04-22 | 2005-11-04 | Daikin Ind Ltd | Refrigeration unit |
| JP2007064500A (en) * | 2005-08-29 | 2007-03-15 | Noritz Corp | Heating device |
| CN102155759A (en) * | 2011-05-10 | 2011-08-17 | 天津市光翼环保科技有限公司 | Solar water heating system and running method thereof |
| CN105180477A (en) * | 2015-09-23 | 2015-12-23 | 上海交通大学 | Running monitoring system and method for large solar heat collection system |
| CN205783889U (en) * | 2016-05-25 | 2016-12-07 | 天津大学 | A kind of controlling temp type flat-plate solar heat collector |
| CN107490198A (en) * | 2017-07-31 | 2017-12-19 | 国网天津节能服务有限公司 | A kind of energy control strategy based on solar energy, heat pump complementation heat storage boiler |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117366889A (en) * | 2023-12-06 | 2024-01-09 | 胜利油田胜兴集团有限责任公司 | Pressure control-based heat pipe type solar monitoring and early warning system |
| CN117366889B (en) * | 2023-12-06 | 2024-02-20 | 胜利油田胜兴集团有限责任公司 | Pressure control-based heat pipe type solar monitoring and early warning system |
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