CN101949556B - Hot water supply system and method using solar energy preferentially - Google Patents
Hot water supply system and method using solar energy preferentially Download PDFInfo
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- CN101949556B CN101949556B CN2010102837690A CN201010283769A CN101949556B CN 101949556 B CN101949556 B CN 101949556B CN 2010102837690 A CN2010102837690 A CN 2010102837690A CN 201010283769 A CN201010283769 A CN 201010283769A CN 101949556 B CN101949556 B CN 101949556B
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/20—Solar thermal
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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Abstract
The invention provides a hot water supply system and method using solar energy preferentially. The system comprises a water heating tank and a heat accumulation tank, bilateral control of water flow between the water heating tank and the heat accumulation tank is achieved through two pipelines, one pipeline is provided with a water changing circulating pump, the water heating tank is in two-way connection with a solar thermal collector, the other pipeline is provided with a solar circulating pump, and the bottom of the water heating tank is respectively connected with a cold water opening andan air source heat pump. The system and the method of the invention can enable the solar circulating pump and the air source heat pump to alternatively heat and give play to the advantages of each other, take full advantage of solar energy while giving play to the energy-saving advantage of the air source heat pump, ensure available hot water at any time while meeting hot water supply during the hot water use peak in the afternoon and in the evening. In addition, the system is easy to control and the energy saving effect is very good.
Description
Technical field
The present invention relates to hot water supply field, relate in particular to a kind of hot water supply system and method for preferential use solar energy.
Background technology
Under the trend of energy-conserving and environment-protective, carry out the hot water supply by solar energy and become the technology of popularizing very much, solar water heater also progresses into the daily life field.Yet the prior solar water heater still dependence to supply of electric power is stronger, significantly conservation of power.A kind of existing solar energy hot water supply system shown in Fig. 1 for example; It comprises air source heat pump 1, solar thermal collector 2, solar energy circulating pump 3, heat pump cycle pump 4, conveying pump 5, hot water supply-water pump 6, entering water electromagnetic valve 7, backwater magnetic valve 8, air bleeding valve 9, liquid level detection device 10,11 and solar heat storage water tank 12, constant temperature water tank 13; And be provided with five temperature acquisition points; Gather five temperature T 1, T2, T3, T4, T5 respectively in real time, the direction of arrow is represented the flow direction of water among the figure.The Cold water supply of solar energy hot water supply system shown in Fig. 1 mainly relies on running water self pressure or booster water pump to get into solar heat storage water tank 12; Through solar energy circulating pump 3 the cold water suction solar thermal collector 2 of solar heat storage water tank 12 bottoms is accepted to shine upon; After temperature T 1, the T2 of the temperature acquisition point shown in Fig. 1 reached the setting temperature difference, solar energy circulating pump 3 continued the cold water suction solar thermal collector 2 of solar heat storage water tank 12 bottoms is accepted to shine upon; So go round and begin again the water heating (temperature differs to reach surely and uses coolant-temperature gage) of solar heat storage water tank 12.Be sent to constant temperature water tank 13 through conveying pump 5 then, when water temperature in the constant temperature water tank 13 is not enough by heat pump to water temperature T 3, hot water leans on and flows automatically or pressurize to be fed to from constant temperature water tank 13 and respectively use water spot.Because this system belongs to the prior art category, does not do giving unnecessary details on the details at this.
The energy-saving effect of above-mentioned solar energy hot water supply system is undesirable; This is because first case water in the constant temperature water tank 13 must lean on heat pump just can reach water temperature T 3 (being that this case water is not fully accepted solar irradiation); And heat pump configuration requirement heating power is big in the native system; Cause user's main power source configuration requirement big, energy-saving effect is also bad.
Summary of the invention
The hot water supply system and the method that the purpose of this invention is to provide a kind of preferential use solar energy are intended to solve the existing not good technological deficiency of solar energy hot water supply system energy-saving effect.
For realizing the foregoing invention purpose; The hot water supply system of a kind of preferential use solar energy provided by the invention comprises heating water tank and heat storage water tank; Carry out the two-way control of current between said heating water tank and the heat storage water tank through the two-way pipeline, wherein be provided with on one road pipeline and change water-circulating pump, the two-way connection solar thermal collector of said heating water tank; Wherein on one road pipeline solar energy circulating pump is set; The bottom of said heating water tank connects cold water outlet and air source heat pump respectively, said solar energy circulating pump have precedence over air source heat pump work and with the air source heat pump interlocking, and the mutual delay predetermined time of solar energy circulating pump and air source heat pump starts; Water return outlet and hot water outlet are set on the said heat storage water tank, liquid level detection device is set in the heat storage water tank.
Further, on another road pipeline of said heating water tank connection solar thermal collector air bleeding valve is set.
Further, the said water-circulating pump that changes is arranged on a road lower pipeline of position.
Further, the bottom of said heating water tank connects cold water outlet through entering water electromagnetic valve.
Further, a heat pump cycle pump is set between said heating water tank and the air source heat pump.
For realizing the foregoing invention purpose; The hot water Supply Method of a kind of preferential use solar energy provided by the invention comprises following process: the heating of thermal type forced circulation is adopted in the operation of said solar energy circulating pump; Water temperature when solar thermal collector top exceeds heating water tank bottom water temperature and reaches predetermined value; Then the solar energy circulating pump starts operation, is transported to solar thermal collector to the water at low temperature of heating water tank bottom and accepts to shine upon and be heated, and the high-temperature water of solar thermal collector is pushed up back heating water tank simultaneously; Water temperature when solar thermal collector top is higher than heating water tank bottom water temperature and is lower than certain predetermined value; The solar energy circulating pump quits work, said solar energy circulating pump have precedence over air source heat pump work and with the air source heat pump interlocking, and the mutual delay predetermined time of solar energy circulating pump and air source heat pump starts.
Further; When the top of heating water tank water temperature is higher than the bottom water temperature of heat storage water tank and reaches predetermined value; Then change water-circulating pump and start operation; Between heating water tank and heat storage water tank, form circulation, when the top of heating water tank water temperature is higher than the bottom water temperature of heat storage water tank and is lower than certain predetermined value, it is out of service to change water-circulating pump.
Further, under the more weak situation of intensity of solar radiation, air source heat pump starts, and this moment, the operation of air source heat pump was controlled according to the middle part water temperature of heating water tank.
Than prior art; The hot water supply system of preferential use solar energy provided by the invention and method are fully by considering solar energy and the slower characteristics of heat pump water; Combined factors such as the thermal efficiency, pipeline heat loss, solar energy fraction and solar irradiation resource according to solar thermal collector are considered, consider the alternately heating of solar energy circulating pump and air source heat pump simultaneously, make the most of the advantage mutually; Brought into play the power savings advantages of air source heat pump when fully also preferentially utilizing solar energy again; Can guarantee that the user has hot water usefulness at any time, can satisfy the hot water amount in afternoon and again in peak water period in the evening, system's control is simple and energy-conservation.
Description of drawings
Fig. 1 is the structural representation of existing solar energy hot water supply system;
Fig. 2 is the structural representation that the hot water supply system of solar energy is preferentially used in preferred embodiment of the present invention.
The specific embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Shown in Fig. 2; The hot water supply system of the preferential use solar energy that preferred embodiment of the present invention provides comprises air source heat pump 21, solar thermal collector 22, solar energy circulating pump 23, heat pump cycle pump 24, changes water-circulating pump 25, hot water supply-water pump 26, entering water electromagnetic valve 27, backwater magnetic valve 28, air bleeding valve 29, liquid level detection device 210, heating water tank 211, heat storage water tank 212; And be provided with seven temperature acquisition points, gather seven water temperature T 1 (water temperatures on solar thermal collector 22 tops), T2 (the top water temperature of heating water tank 211), T3 (the middle and upper part water temperature of heating water tank 211), T4 (the middle and lower part water temperature of heating water tank 211), T5 (water temperature of water return outlet), T1 ' (the bottom water temperature of heating water tank 211), T2 ' (the bottom water temperature of heat storage water tank 212) respectively in real time.Arrow is represented water (flow) direction among the figure.
Compared with prior art; The hot water supply system of preferential use solar energy provided by the invention adopts heating water tank 211 and heat storage water tank 212; And carry out the two-way control of current between heating water tank 211 and the heat storage water tank 212 through two pipelines; Make and change the temperature regime that water-circulating pump 25 can be regulated two water tanks, reach more energy-conservation effect.
The hot water Supply Method of preferential use solar energy provided by the invention is following: temperature and high water tank device control operation are adopted in water inlet; When the temperature T 2 of heating water tank 211 reaches setting value and heat storage water tank 212 lacks of water; Entering water electromagnetic valve 27 is opened, and cold water dependence running water self pressure or booster water pump head into heat storage water tank 212 with the hot water of heating water tank 211, when heating water tank water temperature T 2 is lower than setting value or heat storage water tank 212 full waters; Entering water electromagnetic valve 27 is closed, and system stops moisturizing; The heating of thermal type forced circulation is adopted in the operation of solar energy circulating pump 23, that is, and and when the water temperature T 1 on solar thermal collector 22 tops exceeds heating water tank 211 bottom water temperature T 1 ' and reach predetermined value; T1-T1 '>=7 ℃ for example; Then solar energy circulating pump 23 starts operation, is transported to solar thermal collector 22 to the water at low temperature of heating water tank 211 bottoms and accepts to shine upon and be heated, and the high-temperature water of solar thermal collector 22 is pushed up back heating water tank 211 simultaneously; In running; When the water temperature T 1 on solar thermal collector 22 tops is higher than heating water tank 211 bottom water temperature T 1 ' and be lower than certain predetermined value, for example during T1-T1 '≤2 ℃, solar energy circulating pump 23 quits work.The present invention preferentially uses in the hot water supply system of solar energy, and solar energy circulating pump 23 has precedence over air source heat pump 21 work, and with air source heat pump 21 interlockings, and delay predetermined time (for example 10～15 minutes) starts each other; When the top of heating water tank 211 water temperature T2 is higher than the bottom water temperature T 2 of heat storage water tank 212 ' and reach predetermined value; For example T2-T2 '>=5 ℃ are then changed water-circulating pump 25 and are started operation, between heating water tank 211 and heat storage water tank 212, form and circulate; In running; When the top of heating water tank 211 water temperature T2 is higher than the bottom water temperature T 2 of heat storage water tank 212 ' and be lower than certain predetermined value, for example during T2-T2 '≤2 ℃, it is out of service to change water-circulating pump 25; When running into rainy weather, intensity of solar radiation a little less than, air source heat pump 21 just starts, this moment air source heat pump 21 operation according to middle and upper part water temperature T 3 controls of heating water tank 211, when T3 reached setting value, air source heat pump 21 quit work.
The hot water supply system of preferential use solar energy provided by the invention and method are fully by considering solar energy and the slower characteristics of heat pump water; Factors such as the thermal efficiency, pipeline heat loss, solar energy fraction and solar irradiation resource according to solar thermal collector 22 are considered; Solar thermal collector accepts just can satisfy in light application time 4-8 hour the heating requirements of 60 degrees centigrade of hot water 22 every days; The size of heating water tank 211 disposes (promptly all can in 15-20 minute, the water temperature in the heating water tank be heated to 60 degrees centigrade through solar thermal collector 22 or air source heat pump 21) by 15-20 minute the heat that adds, and the configuration of the heating power of air source heat pump 21 is generally in 6-10 hour.The start-up control of air source heat pump 21 is at solar energy circulating pump 23 after 30 minutes out of service, and with 23 interlockings of solar energy circulating pump, and guarantee preferentially operation of solar energy circulating pump 23.The operation of solar energy circulating pump 23 generally once (promptly can reach forced service and set the temperature difference) about 15 minutes about 15 minutes.The hot water supply system control of preferential use solar energy provided by the invention is simple; Can fully and preferentially utilize solar energy; Consider simultaneously to let solar energy circulating pump 23 and air source heat pump 21 alternately heat, make the most of the advantage mutually, reach the power savings advantages of having brought into play air source heat pump 21 when making full use of solar energy again; Can guarantee that the user has hot water usefulness at any time, can satisfy the hot water amount in afternoon and again in peak water period in the evening.
The present invention building in particular cases (the roof erection space is not enough) also can move the hot water consumption of solar energy heating insufficient section, heat during valley power consumption at night through air source heat pump 21; Solar energy circulating pump 23 is controlled if having time, and it is controlled at and does not move (if evening, operation then can be dispelled the heat) evening.Upper temp T2 (being set at 60 degrees centigrade of the coolant-temperature gages) control of heating water tank 211 is leaned in the operation of heat pump at night; This moment, entering water electromagnetic valve 27 unlatchings headed into storage in the heat storage water tank 212 with the hot water of heating water tank 211; Operation so goes round and begins again; A large amount of operating costs can be saved like this, and the water requirement of user's whole day can be satisfied.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention.All any modifications of within spirit of the present invention and principle, being done, be equal to replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. preferential hot water supply system that uses solar energy; It is characterized in that comprising heating water tank and heat storage water tank; Carry out the two-way control of current between said heating water tank and the heat storage water tank through the two-way pipeline, wherein be provided with on one road pipeline and change water-circulating pump, the two-way connection solar thermal collector of said heating water tank; Wherein on one road pipeline solar energy circulating pump is set; The bottom of said heating water tank connects cold water outlet and air source heat pump respectively, said solar energy circulating pump have precedence over air source heat pump work and with the air source heat pump interlocking, and the mutual delay predetermined time of solar energy circulating pump and air source heat pump starts; Water return outlet and hot water outlet are set on the said heat storage water tank, liquid level detection device is set in the heat storage water tank.
2. the hot water supply system of preferential use solar energy according to claim 1 is characterized in that: on another road pipeline of said heating water tank connection solar thermal collector air bleeding valve is set.
3. the hot water supply system of preferential use solar energy according to claim 1 is characterized in that: the said water-circulating pump that changes is arranged on a road lower pipeline of position.
4. the hot water supply system of preferential use solar energy according to claim 1 is characterized in that: the bottom of said heating water tank connects cold water outlet through entering water electromagnetic valve.
5. the hot water supply system of preferential use solar energy according to claim 1 is characterized in that: a heat pump cycle pump is set between said heating water tank and the air source heat pump.
6. according to the hot water Supply Method of the preferential use solar energy of the said hot water supply system of claim 1; It is characterized in that comprising following process: the heating of thermal type forced circulation is adopted in the operation of said solar energy circulating pump; Water temperature when solar thermal collector top exceeds heating water tank bottom water temperature and reaches predetermined value; Then the solar energy circulating pump starts operation, is transported to solar thermal collector to the water at low temperature of heating water tank bottom and accepts to shine upon and be heated, and the high-temperature water of solar thermal collector is pushed up back heating water tank simultaneously; Water temperature when solar thermal collector top is higher than heating water tank bottom water temperature and is lower than certain predetermined value; The solar energy circulating pump quits work, said solar energy circulating pump have precedence over air source heat pump work and with the air source heat pump interlocking, and the mutual delay predetermined time of solar energy circulating pump and air source heat pump starts.
7. the hot water Supply Method of preferential use solar energy according to claim 6; It is characterized in that: when the top of heating water tank water temperature is higher than the bottom water temperature of heat storage water tank and reaches predetermined value; Then change water-circulating pump and start operation; Between heating water tank and heat storage water tank, form circulation, when the top of heating water tank water temperature is higher than the bottom water temperature of heat storage water tank and is lower than certain predetermined value, it is out of service to change water-circulating pump.
8. the hot water Supply Method of preferential use solar energy according to claim 7 is characterized in that: under the more weak situation of intensity of solar radiation, air source heat pump starts, and this moment, the operation of air source heat pump was controlled according to the middle and upper part water temperature of heating water tank.
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| CN2010102837690A CN101949556B (en) | 2010-09-08 | 2010-09-08 | Hot water supply system and method using solar energy preferentially |
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| CN2010102837690A CN101949556B (en) | 2010-09-08 | 2010-09-08 | Hot water supply system and method using solar energy preferentially |
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| CN101949556B true CN101949556B (en) | 2012-11-14 |
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| CN103353174A (en) * | 2013-08-19 | 2013-10-16 | 鲁东大学 | Solar energy-saving hot water system |
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| CN107192136A (en) * | 2017-06-26 | 2017-09-22 | 武汉理工大学 | A kind of water saving and temperature-fixing water outlet and control method based on water heater |
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| CN109668338A (en) * | 2018-12-25 | 2019-04-23 | 常州市市政工程设计研究院有限公司 | Solar water heating system under suitable for low temperature environment |
| CN109899998A (en) * | 2019-02-13 | 2019-06-18 | 湖南哲能赫新能源有限责任公司 | A kind of interlocking-type space energy water heater and interlock control method |
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Address after: 518118 Guangdong Province, Shenzhen city Longgang District Pingshan Street South Channel Shunda Road industrial area, building a Quan Shun factory two Patentee after: SHENZHEN JIAPUTONG SOLAR ENERGY CO., LTD. Address before: 518118 Guangdong Province, Shenzhen city Longgang District Pingshan Street South Channel Shunda Road industrial area, building a Quan Shun factory two Patentee before: Jiaputong Solar Co., Ltd., Shenzhen City |