CN101655283A - Solar water heater and heating control method - Google Patents
Solar water heater and heating control method Download PDFInfo
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- CN101655283A CN101655283A CN200810145779A CN200810145779A CN101655283A CN 101655283 A CN101655283 A CN 101655283A CN 200810145779 A CN200810145779 A CN 200810145779A CN 200810145779 A CN200810145779 A CN 200810145779A CN 101655283 A CN101655283 A CN 101655283A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 226
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- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000012546 transfer Methods 0.000 claims description 2
- 239000008236 heating water Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009182 swimming Effects 0.000 description 2
- 108010022579 ATP dependent 26S protease Proteins 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 description 1
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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
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Abstract
The invention provides a solar water heater. The solar water heater comprises a solar heat collector (1) and at least two water tanks (2), wherein a heat exchanger (24) is arranged in each water tank (2), the inlet and the outlet of each heat exchanger (24) are respectively communicated with the outlet and the inlet of the solar heat collector (1) to form a loop, a heat-conducting medium is arranged in the loop, a pump (3) enabling the heat-conducting medium to flow is arranged at the outlet or the inlet of the solar heat collector (1), and a valve (25) is arranged at the inlet or the outlet of each heat exchanger (24). The invention also provides a heating control method, and the invention can distribute the heat collected by the solar heat collector (1) to heat the water temperature in the water tanks (2) of different users according to the different requirements of the different users on the water temperature.
Description
Technical field
The present invention relates to technical field of solar water heaters, be meant a kind of solar water heater and method for heating and controlling of centralized heating especially.
Background technology
At present, for the solar water heater of centralized heating, adopt the bigger heated water of public water tank centralized stores usually, each user's little water tank is connected with public water tank, by public water tank with each little water tank of hot water supply, during user's heat water by this little cistern water supply.Owing to adopt public water tank to take bigger space, therefore the Chinese patent of the patent No. 200420062061.2 discloses a kind of solar energy centralized heat collection household heat supplying facility, removed from and used public water tank, it is provided with boiler in each man of resident family, heat exchanger is set in the boiler, heat exchanger is connected on the solar thermal collector by pipeline, heat-conducting medium is arranged, the water in the mode heating water tank that heat-conducting medium after heating by solar thermal collector and the water in the water tank in each man of resident family carry out heat exchange in the pipeline.
But in the described technical scheme of above-mentioned patent application specification, because the heat exchanger in each boiler directly is communicated with solar thermal collector, problem below such structure exists: for the higher user of temperature in the water tank, system's temperature difference circulation may be taken away the heat in the water tank.
The technical scheme of prior art is, only when solar thermal collector surpasses a certain value heat-conducting medium is circulated in the loop.The shortcoming of this structure is, and is higher if the solar energy heating actuator temperature is provided with, and will be in the high temperature section circulation in the solar thermal collector always, and work can make system synthesis efficient reduce like this.If weather is not so good, then the solar thermal collector outlet temperature may not reach temperature difference cycling condition, at this moment, just can not start the circulation of heat-conducting medium, and the water tank (water at low temperature) that then needs to heat just can not get heat supplement.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of solar water heater and method for heating and controlling of centralized heating, can high efficiencyly utilize solar heat.
The invention provides following a kind of solar water heater, it comprises solar thermal collector and at least two water tanks, be provided with heat exchanger in each water tank, each heat exchanger entrance and outlet are communicated with the formation loop with the outlet and the inlet of solar thermal collector respectively, has heat-conducting medium in the described loop, in solar thermal collector and pipeline that each heat exchanger is connected, be provided with the pump that makes heat transfer medium flows, it is characterized in that each heat exchanger entrance or exit are provided with valve.
By on the heat exchanger in each water tank valve being set, can control separately the heat exchanger of each water tank like this, thus, can control heating separately to each water tank.
The present invention can also further be provided with the 1st temperature sensor that is used to detect water temperature in each water tank, and controls described valve by control module according to the detected temperatures of the 1st temperature sensor.
Like this, can realize the automatic control of each water tank heating.
The present invention can also further be provided with the 1st temperature sensor that is used to detect water temperature in each water tank, be provided with the 2nd temperature sensor that is used to detect the heat-conducting medium temperature in the solar thermal collector exit, control the action of described valve and pump by control module according to the temperature information of the 1st, the 2nd temperature sensor.
Like this, can realize the automatic control that each water tank heating and heat-conducting medium flow in solar thermal collector.
Described water tank comprises: delivery port, be positioned at water tank bottom or near the water inlet on the bottom sidewall; Described heat exchanger is positioned at the water tank middle and lower part.
Described water inlet is located at the water tank bottom, can stop water on water tank when using hot water, at this moment, can utilize the self gravitation of water in the water tank, outwards discharges water.In addition, heat exchanger is positioned at the water tank middle and lower part, like this, even if when water tank is discontented, also can carry out the heating of water tank.
Described heat exchanger is a helical form tubulose body, and outer surface is provided with fin outstanding more than.
Like this, heat exchanger take up room very little.Fin is set improves heat exchanger effectiveness.
The present invention also provides a kind of heating means that are used for above-mentioned solar water heater, and this method comprises: A, control are arranged on the pump in the loop, and heat-conducting medium is circulated in the loop; B, control are arranged on the state of the valve in each heat exchanger entrance or exit and control the interior water temperature of each water tank.
Adopt such method, can realize the independent heating of each water tank.
Steps A comprises: when the temperature of solar thermal collector exit heat-conducting medium and the water temperature in arbitrary water tank start the value of setting more than or equal to the temperature difference, start the pump in the loop, heat-conducting medium is circulated in the loop, step B comprises: in pump startup, open the valve in the water tank, the water in the water tank is heated.
According to this method, can only when solar thermal collector heat-conducting medium temperature exceeds certain numerical value than water tank water temperature, just this water tank be heated.
Step B comprises: in pump startup, open the valve in the corresponding water tank, when the water in this water tank is heated, close the valve in other water tanks.
Like this, can only heat than the water tank that water tank water temperature exceeds this condition of certain numerical value satisfying solar thermal collector heat-conducting medium temperature.
Step B comprises: the state of controlling described valve according to the difference of the difference of the temperature of solar thermal collector exit heat-conducting medium and design temperature or water temperature in the water tank and design temperature.
Can control according to user's the temperature that is provided with, or according to the temperature of solar thermal collector exit heat-conducting medium, whether control heats water tank automatically.
Said method further comprises: when detecting arbitrary valve opening, start described pump; When detecting all valve closings, close described pump.
Can reduce the invalid pumping of pump like this.
Description of drawings
Fig. 1 is the schematic diagram of solar water heater;
Fig. 2 adds the flow chart of thermal control for solar water heater.
The specific embodiment
Show the schematic diagram of solar water heater of the present invention as Fig. 1, the present invention is described in detail referring to Fig. 1:
Solar water heater of the present invention comprises solar thermal collector 1, distributes to each user's water tank 2.Solar thermal collector 1 is installed in the place that sunlight can shine, as roof, outdoor body of wall place, to absorb amount of solar heat.Water tank 2 is installed in each user's family, as the bathroom, is used for providing hot water to the user.
The water inlet 22 of each water tank 2 links to each other with running water pipe, is used for to water tank 2 water inlets; The delivery port 21 of water tank 2 links to each other with shower nozzle or hot-water line, directly the hot water in the user provides water tank 2.In addition, water tank 2 peripheries also are provided with heat-insulation layer.
Because the 26S Proteasome Structure and Function of each water tank 2 all is the same, therefore, is that example describes with the water tank 2 of top side in scheming only at this, and omit explanation for other water tank 2.
The water inlet 22 of water tank 2 is positioned on water tank 2 bottom halves or the close sidewall of bottom half, delivery port 21 is positioned at water tank 2 casing tops, like this, during hot water in the user uses water tank 2, can stop in water tank 2, to go up water, only rely on the self gravitation of hot water in the water tank 2 outwards to put hot water from water tank 2.Thus, can guarantee that when taking hot water, the water temperature of hot water can not descend.
The latter half in the water tank 2 is provided with heat exchanger 24, the entrance and exit of heat exchanger 24 is communicated with the outlet and the inlet of solar thermal collector 1 by pipeline respectively, thereby, make the heat exchanger 24 of each water tank 2 all can constitute a loop with solar thermal collector 1.Therefore, be parallel-connection structure between the heat exchanger 24 in each water tank 2.Heat exchanger 24 can adopt spiral helicine tubular body, though so that each heat exchanger 24 takies very little space in water tank 2, heat exchanger 24 can fully contact with the water in the water tank 2.In addition, heat exchanger 24 is arranged on water tank 2 bottoms, like this,, also can carries out the heating of water tank even if when water tank is discontented.
And, because water inlet 22 is located at the bottom of water tank 2, delivery port 21 is located at water tank 2 casing tops, heat exchanger 24 is arranged on water tank 2 bottoms, therefore water tank 2 tops can be made the pressure-bearing top ability of swimming method of operation of sealing, at this moment can make water inlet 22 be in open mode all the time, and the pressure of the local running water of the discharge pressure of water tank and water supply is suitable, uses more convenient.
In addition, also can several outstanding aliform sheets be set,, increase heat exchanger effectiveness to increase the contact area of heat exchanger 24 and water at helical form tubulose external surface.
In addition, as shown in the figure, also pass through a pipeline connection between the outlet of solar thermal collector 1 and the inlet, and on this pipeline, also be provided with valve 16.The purpose that this valve 16 is set is; when the heat-conducting medium temperature in the solar thermal collector 1 is higher than certain value (for example 90 ℃); open valve 16 and pump 3; form a closed loop cycle in the loop between solar thermal collector 1 and pipeline; reduce the temperature of solar thermal collector 1, with protection pump 3 and solar thermal collector 1.
In the loop that solar thermal collector 1, heat exchanger 24 are constituted, has flowable heat-conducting medium.Also be provided with pump 3 in the connecting line of solar thermal collector 1 and heat exchanger 24, heat-conducting medium circulates in the loop of solar thermal collector 1 and each heat exchanger 24 formations under the drive of pump 3.At this moment, under the effect of pump 3, heat-conducting medium absorbs the heat of sunlight at solar thermal collector 1 place, flow to heat exchanger 24 places in the water tank 2 subsequently, carries out heat exchange with water in the water tank 2, with the water in the heating water tank 2.
In addition, as shown in the figure, near pump 3, be provided with expansion drum 31, Pressure gauge 32 and not shown relief valve.By expansion drum 31 and relief valve are set, can guarantee that whole pipeline operates in the suitable pressure limit.When pipeline inner pressure is excessive, can pass through expansion drum 31 and relief valve pressure release.In addition, Pressure gauge 32 is set, not only can estimates the pipeline inner pressure situation,, can also realize the automatic adjusting of pressure in the whole pipeline if this Pressure gauge 32 is the electronic pressure tables that can link to each other with control module described later (not shown).
Be provided with valve 25 in heat exchanger 24 porch, valve 25 is set, can control whether heat exchanger 24 is supplied with heat-conducting medium.In addition, also can change the flow velocity of the heat-conducting medium of the heat exchanger 24 of flowing through, thereby change the firing rate of being undertaken by heat exchanger 24 by this valve 25.But, this valve 25 also can be arranged on the exit of heat exchanger 24.
The valve 25 preferred magnetic valves that use at this moment, can be controlled the aperture of valve 25 by temperature control circuit according to the temperature of heat-conducting medium.Temperature control circuit comprises: be arranged on the 1st temperature sensor 26 in the water tank 2, receive the information of the 1st temperature sensor 26 and control the control module of magnetic valve action.The water temperature information that is set by the user is stored in the control module, and when the water temperature information in the water tank 2 reached user's design temperature, valve-off 25 stopped water in the heating water tank 2; Otherwise, if water temperatures do not reach user's design temperature in the water tank 2, then keep valve 25 to be open mode, so that the heat-conducting medium inflow heat exchanger 24 that in solar thermal collector 1, had heated, the water in the heating water tank 2.Be understood that control module also can be integrated in the temperature sensor.
In addition, except being set, the 1st temperature sensor 26 measures the temperature of water tank 2 in each water tank 2, the temperature that one the 2nd temperature sensor, 4, the 2 temperature sensors 4 are used to detect the heat-conducting medium in solar thermal collector 1 exit can also be set in solar thermal collector 1 exit.In addition, the 2nd temperature sensor 4 also links to each other with above-mentioned control module, and at this moment, control module can receive two temperature informations that temperature sensor is measured.When this control module learns that the water temperature of solar thermal collector 1 exit heat-conducting medium temperature height ratio water tank 2 exceeds certain numerical value (for example 25 ℃), this control module is just opened the valve 25 of this water tank 2, and startup pump 3, the heat exchanger 24 pumping heat-conducting mediums in this water tank 2.Like this, in the time of can only the heat-conducting medium temperature exceeds uniform temperature than the water in the water tank 2 in solar thermal collector 1, just the water in this water tank 2 be heated.But, if control module learns that by the 1st temperature sensor 26 when the water in the water tank 2 were higher than 85 ℃, even if the temperature of heat-conducting medium is higher than 25 ℃ of the water temperatures of water tank 2, control module can Open valve 25 yet.In addition, the invention is not restricted to be provided with a control module, two control modules also can be set detect the 1st temperature sensor 26 and the 2nd temperature sensor 4 respectively, at this moment, controlled the two temperatures sensor if desired simultaneously at 26,4 o'clock, two control module collaborative works are got final product.
This control method is particularly useful for 2 different situations of temperature of each water tank.For example, be injected into cold water in certain user's water tank 2, water temperature descends.At this moment, if valve 25 is not set, then heat-conducting medium can flow in the heat exchanger 24 at each water tank 2 under the drive of pump 3, this must cause 2 in each water tank to carry out heat exchange by the heat exchanger 24 that is connected in parallel to each other, and makes the awfully hot water tank 2 of part itself to lower water tank 2 heat releases of other water temperature.
The present invention is by being provided with valve 25, intercepted the heat exchange of 24 of each heat exchangers in parallel.Like this, even if certain water tank 2 is injected into cold water, water temperature descends, because the valve 25 of high-temperature water tank 2 is in closed condition all the time, can't and 1 of solar thermal collector carry out heat exchange, thereby, at this moment, heat-conducting medium only and lower 2 in the water tank of water temperature carry out heat exchange.So just avoided high-temperature water tank 2 to be taken away heat, prevented that water tank 2 water temperatures of high temperature descend originally by heat-conducting medium.
On the other hand,, also can under the control of control module, start when valve 25 is opened in any user's water tank 2, open pump 3 even if when being provided with electric heating body in each water tank 2; When then closing described pump 3 during valve 25 in all user's water tanks 2, like this, can also saves energy.
In addition, control module is the measurement result of monitoring temperature sensor 4 in real time, when in case the heat-conducting medium temperature in the solar thermal collector 1 is higher than uniform temperature (for example 85 ℃), open pump 3, circulate in the closed-loop system that heat-conducting medium is formed directly being communicated with the import and export of solar thermal collector 1, damage solar thermal collector 1 to prevent overheated heat-conducting medium.
By top embodiment as can be seen, the heating means of solar water heater of the present invention are the flow chart that solar water heater as shown in Figure 2 adds thermal control, specifically may further comprise the steps:
Step 21: control is arranged on the pump 3 in the pipeline, and heat-conducting medium is circulated in the loop;
Wherein, described control mode can for: detect in the temperature of solar thermal collector 1 exit heat-conducting medium and the water temperature arbitrary water tank 2 in during more than or equal to the temperature difference startup value of setting, start the pump 3 in the loop, heat-conducting medium is circulated in the loop, when detecting the described temperature difference, then close the pump 3 of loop circuit less than the startup value of setting.
Wherein, also can be when detecting arbitrary valve 25 and open, start described pump 3; When detecting all valves 25 and closing, close described pump 3.
Step 22: the amplitude that control is arranged on the on off state of valve 25 in each heat exchanger 24 inlets or exit or valve opening is controlled the water temperature in each water tank is heated.
Wherein, can control respectively, for example when certain water tank water temperature is low, only open the valve 25 in this water tank 2, when the water this water tank 2 in is heated, and close the interior valve 25 of other water tanks 2 each valve 25.Wherein, the mode of judging which Cistern valve of control can be the state of controlling described valve 25 according to the difference of interior water temperature of the difference of the temperature of solar thermal collector 1 exit heat-conducting medium and design temperature or water tank 2 and design temperature.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not every, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.As in embodiment, water tank 2 being illustrated for the pressure-bearing top ability of swimming method of operation of top seal, but the method for operation that overflow pipe is set at water tank 2 tops also is feasible, at this moment water tank 2 is an opening mode, thus delivery port 21 preferably with the water inlet 22 the same bottoms that are located at water tank 2.
Claims (10)
1. solar water heater, comprise solar thermal collector (1) and at least two water tanks (2), be provided with heat exchanger (24) in each water tank (2), each heat exchanger (24) entrance and exit is communicated with the formation loop with the outlet and the inlet of solar thermal collector (1) respectively, has heat-conducting medium in the described loop, in solar thermal collector (1) and pipeline that each heat exchanger (24) is connected, be provided with the pump (3) that makes heat transfer medium flows, it is characterized in that each heat exchanger (24) inlet or exit are provided with valve (25).
2. solar water heater according to claim 1, it is characterized in that, further comprise: in each water tank (2), be provided with the 1st temperature sensor (26) that is used to detect water temperature, control described valve (25) according to the detected temperatures of the 1st temperature sensor (26) by control module.
3. solar water heater according to claim 1, it is characterized in that, further comprise: in each water tank (2), be provided with the 1st temperature sensor (26) that is used to detect water temperature, be provided with the 2nd temperature sensor (4) that is used to detect the heat-conducting medium temperature in solar thermal collector (1) exit, control described valve (25) and pump (3) according to the temperature information of the 1st, the 2nd temperature sensor (26,4) by control module.
4. solar water heater according to claim 1 is characterized in that, described water tank (2) comprising: delivery port (21), be positioned at water tank bottom or near the water inlet (22) of bottom; Described heat exchanger (24) is positioned at the water tank middle and lower part.
5. according to claim 1 or 4 described solar water heaters, it is characterized in that described heat exchanger (24) is a helical form tubulose body, and outer surface is provided with fin outstanding more than.
6. the method for heating and controlling of the described solar water heater of claim 1 comprises:
A, control are arranged on the pump (3) in the pipeline, and heat-conducting medium is circulated in the loop;
B, control are arranged on the valve (25) in each heat exchanger (24) inlet or exit and control the interior water temperature of each water tank.
7. method for heating and controlling according to claim 6 is characterized in that,
When controlling described pump (3) startup, open the valve (25) at least one water tank (2), the water in the water tank (2) is heated.
8. method for heating and controlling according to claim 7 is characterized in that,
Step B comprises: when the difference of design temperature arrives the temperature difference startup value of setting in water temperature in the judgement water tank (2) and the water tank, open the valve (25) of corresponding water tank (2).
9. method for heating and controlling according to claim 6 is characterized in that step B comprises: control described valve (25) according to the temperature of solar thermal collector (1) exit heat-conducting medium and the difference of the interior design temperature of water tank.
10. method for heating and controlling according to claim 6 is characterized in that, further comprises: when detecting arbitrary valve (25) unlatching, start described pump (3); Detect all valves (25) when closing, close described pump (3).
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810145779A CN101655283A (en) | 2008-08-19 | 2008-08-19 | Solar water heater and heating control method |
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| CN200810145779A CN101655283A (en) | 2008-08-19 | 2008-08-19 | Solar water heater and heating control method |
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| CN101655283A true CN101655283A (en) | 2010-02-24 |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101893332A (en) * | 2010-07-29 | 2010-11-24 | 田学军 | Double-circulation instantaneous solar energy water heater |
| CN102225345A (en) * | 2011-06-03 | 2011-10-26 | 宁波大学 | Water saving device in chemical laboratory combined with laboratory existing ventilating structure |
| CN102294278A (en) * | 2011-06-03 | 2011-12-28 | 宁波大学 | Chemical laboratory water saving apparatus combined with structure of fume hood |
| CN103090456A (en) * | 2012-11-29 | 2013-05-08 | 海尔集团公司 | Multi-energy combined hot water system and multi-energy control switching method |
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| CN105588348A (en) * | 2016-02-18 | 2016-05-18 | 南宁市新双源节能科技有限责任公司 | Full-automatic energy saving controller of solar water heater |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893332A (en) * | 2010-07-29 | 2010-11-24 | 田学军 | Double-circulation instantaneous solar energy water heater |
| CN102294278B (en) * | 2011-06-03 | 2015-01-21 | 宁波大学 | Chemical laboratory water saving apparatus combined with structure of fume hood |
| CN102225345A (en) * | 2011-06-03 | 2011-10-26 | 宁波大学 | Water saving device in chemical laboratory combined with laboratory existing ventilating structure |
| CN102294278A (en) * | 2011-06-03 | 2011-12-28 | 宁波大学 | Chemical laboratory water saving apparatus combined with structure of fume hood |
| CN103292466A (en) * | 2012-03-02 | 2013-09-11 | 珠海格力电器股份有限公司 | Variable-frequency heat pump water heater and variable-frequency control method thereof |
| CN103292466B (en) * | 2012-03-02 | 2015-12-23 | 珠海格力电器股份有限公司 | Variable-frequency heat pump water heater and variable-frequency control method thereof |
| CN103090456B (en) * | 2012-11-29 | 2018-11-23 | 海尔集团公司 | Multi-energy combined hot water system and multi-energy control switching method |
| CN103090456A (en) * | 2012-11-29 | 2013-05-08 | 海尔集团公司 | Multi-energy combined hot water system and multi-energy control switching method |
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| CN103322266B (en) * | 2013-06-25 | 2016-01-20 | 宁波硕源新能源科技有限公司 | A kind of fabrication and installation method of intelligent dynamoelectric valve |
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Application publication date: 20100224 |