CN206291511U - A kind of novel solar water heating system - Google Patents
A kind of novel solar water heating system Download PDFInfo
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- CN206291511U CN206291511U CN201620920900.2U CN201620920900U CN206291511U CN 206291511 U CN206291511 U CN 206291511U CN 201620920900 U CN201620920900 U CN 201620920900U CN 206291511 U CN206291511 U CN 206291511U
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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
A kind of novel solar water heating system, for space-heating system in secondary heat supply network.The system includes：Control device, one or more solar-heating subsystem, boiler, water pump and water pipe.The system utilizes the secondary heat supply network backwater of solar energy heating, improves the economy of heat supply.The system takes full advantage of solar energy heat energy, can largely reduce carbon emission.
Description
Technical field
A kind of novel solar water heating system, for space-heating system in secondary heat supply network.The system utilizes solar energy
Secondary heat supply network backwater is heated, the economy of heat supply is improve.The system takes full advantage of solar energy heat energy, can largely reduce
Carbon emission.
Background technology
With environmental protection, the raising of awareness of saving energy, solar water heater initially enters thousand as a kind of white domestic appliances
Ten thousand families, and favored extensively.In the area that solar energy enriches, China has generally started to promote domestic solar water heater
Hot water is provided.The performance of domestic solar water heater has fluctuation and intermittence with the offer period of solar energy.In rainy season and
Night, the storage water of pot-type boiler tends not to fully meet domestic hot water demand.Especially in the rural area of Insulation difference,
Winter is needed when using hot water, and the water heater on roof is on the contrary into ornaments.
Regional heating system is generally used in view of north of China cities and towns.In central heating system, secondary heat supply network
Supply water temperature is universal between 60~80 DEG C, is well suited for being combined with solar water heater.The present invention is proposed solar water heater
Combined with secondary heat supply network, can both be improved the economy of central heating system, the efficiency of solar water heater can be improved again, fully
Ensure that user obtains enough hot water.
The content of the invention
The present invention proposes a kind of novel solar water heating system, it is characterised in that the system includes：Control device, one
Individual or multiple solar-heating subsystems, boiler, water pump and water pipe；Solar-heating subsystem includes solar-heating
System and solar energy cold water side sub-system；Solar-heating subsystem includes solar thermal collector, cycling use of water pump, TEMP
Device and water pipe；Solar energy cold water side sub-system include draw water with water pump, temperature sensor, heat exchanger, valve, pressure sensor and
Water pipe；Control device and solar thermal collector, heat exchanger, boiler, valve, water pump, temperature sensor and pressure sensor are logical
Letter connects to be controlled；Solar-heating subsystem is acted between water supply used water pipe and backwater water pipe.
When there is multiple building in heat supply region, a solar-heating subsystem is arranged in each building roof.
The solar water heating system is located in the secondary heat supply network of district heating, and the solar water heating system is used from the backwater of heat supply network
The relatively low heat supply backwater of temperature is extracted in conduit pipeline, by after heating, then the confession that temperature hot water higher is added to heat supply network
In water conduit pipeline.
Multiple solar-heating subsystems share a boiler, and the boiler is covered using insulation material, capacity according to
The design of solar energy quantity of heat production determines that the boiler is placed near water return pipeline, and the pressure in boiler uses atmospheric pressure.
Solar thermal collector receives solar irradiation and obtains heat in building roof, and the recirculated water in solar thermal collector passes through
Temperature after heating is raised, and into heat exchanger, in heat exchanger, the recirculated water of hot side is cooled down by the backwater of cold side, following after cooling
Ring water is again introduced into solar thermal collector after being pressurized by cycling use of water pump.
The heat supply backwater extracted with water pump in backwater water pipe that draws water enters the heat exchanger cold side of solar-heating subsystem,
Backwater is heated in heat exchanger by high temperature circulation water, subsequently into boiler；Wherein, draw water and be placed under heat exchanger with water pump
Trip, prevents heat exchanger tube hypertonia；One controlled valve of heat exchanger placed upstream, the Shuttoff Valve when being stopped.
In the outlet mounting temperature sensor of solar thermal collector, when solar thermal collector exit water temperature is more than design temperature
When, the quantity of circulating water of water circulating pump is increased under control of the control means, when solar thermal collector heat collector exit water temperature is less than
During design temperature, the quantity of circulating water of cycling use of water pump is reduced under control of the control means；Installed in the cold side outlet port of heat exchanger
Sensor, when the return water temperature of cold side outlet port is more than design temperature, increases draw water with water pump under control of the control means
Quantity of circulating water, when the return water temperature of cold side outlet port is less than design temperature, reduces to draw water and uses water pump under control of the control means
Quantity of circulating water；When solar-heating subsystem is stopped, closes to draw water under control of the control means and use water pipe line
On valve.
Hot water tank top installs exhaust steam valve, sets peep hole, mounting temperature sensor, level sensor and pressure in boiler
Force snesor.
Boiler connection multiple is drawn water and uses water pipe line, and each road is drawn water and entered by suction pump with the backwater in water pipe line
Boiler；The delivery port of boiler connects a supercharging water pump, and supercharging connects boiler and water supply used water pipe pipeline with water pump, increases
Hot water in boiler is pumped into water supply used water pipe by hydraulic water pump；Respectively to draw water and connect boiler bottom with water pipe line, water tank is supplied
The outlet of water water pipe is arranged on apart from the slightly higher position in bottom.
When the water temperature in boiler reaches setting value and cistern water level is higher than early warning water level, supercharging water pump is by water tank
Hot water pump into water supply used water pipe, when in boiler water level be less than early warning water level when, supercharging is stopped with water pump, works as boiler
When interior pressure is more than setting value, exhaust steam valve is opened.
Brief description of the drawings
Fig. 1 solar water heating system figures；
Fig. 2 hot water tank structure figures.
Specific embodiment
Region where being exactly the system between the feed pipe and return pipe of space-heating system.Proposed by the invention
Solar water heating system completes the process that feed pipe is sent into using solar energy heating backwater and by high-temperature tempering.
Embodiment 1, as shown in Figure 1.In the system of the present embodiment, 3 sets of solar-heating subsystems are had, corresponded to respectively
3 draw water pipelines.Additionally, No. 7 Pump7 of also one shared boiler and a supply-water pump.
The system arranges solar thermal collector on three roofs of building.Preferably, the area of solar thermal collector 1
It is 100m2；The area that solar thermal collector 2 is 200m2；The area that solar thermal collector 3 is 500m2。
Solar thermal collector 1, No. 1 Pump1 of water circulating pump and heat exchanger 1 constitute solar-heating subsystem 1.
No. 1 Valve1 of valve, heat exchanger No. 1 and No. 2 Pump2 of suction pump constitutes draw water pipeline 1.
Solar thermal collector 2, No. 3 Pump3 of water circulating pump and heat exchanger 2 constitute solar-heating subsystem 2.
No. 2 Valve2 of valve, heat exchanger No. 2 and No. 4 Pump4 of suction pump constitutes draw water pipeline 2.
Solar thermal collector 3, No. 5 Pump5 of water circulating pump and heat exchanger 3 constitute solar-heating subsystem 3.
No. 3 Valve3 of valve, heat exchanger No. 3 and No. 6 Pump6 of suction pump constitutes draw water pipeline 3.
By taking the associated working principle of solar-heating subsystem 1 and draw water pipeline 1 as an example, in illustrating the present embodiment
The operation principle of each subsystem.In solar thermal collector 1, the relatively low recirculated water of temperature enters heat collector 1, by sunlight
After radiant heating, temperature recirculated water higher leaves heat collector.No. 1 recirculated water in T1 monitoring heat collectors exit of temperature sensor
Temperature.Recirculated water leaves the hot water side for entering heat exchanger 1 after heat collector.By after heat exchange, circulating water temperature is reduced.Recirculated water
Enter No. 1 Pump1 pressurization of water circulating pump after leaving heat exchanger.Recirculated water after pressurization is flowed into solar thermal collector 1.In temperature
At No. 1 T1 of degree sensor, if the water temperature of heat collector outlet is less than design temperature (preferably 75~95 DEG C), followed by adjustment
Ring water pump No. 1 working frequency of Pump1 reduces quantity of circulating water.If above design temperature, then increase quantity of circulating water.
It is preferred that a kind of PID controller, using T1 temperature value recycling water formulation amounts.
In draw water pipeline 1, the backwater (generally 30~50 DEG C) in return pipe is in No. 2 effects of Pump2 of suction pump
Under be drawn into pipeline.The cold water side drawn water by heat exchanger 1 in drinking-water pipe, the heat of absorption cycle water.Draw water and added
After heat, pressurizeed by No. 2 Pump2 of suction pump, in entering back into boiler.Heat exchanger 1 is water-water heat exchanger, it is preferred to use inverse
Flow arrangement mode.
Temperature sensor T1 monitors No. 1 pumping temperature in cold water side exit of heat exchanger.At No. 2 T2 of temperature sensor,
If No. 1 pumping temperature in cold water side exit of heat exchanger is less than design temperature (preferably 65~85 DEG C), taken out by adjustment
Water pump No. 2 working frequencies of Pump2 reduce pump-out.If above design temperature, then increase pump-out.
It is preferred that a kind of PID controller, pump-out is adjusted using second temperature value T2.
When No. 1 stopping heat supply of solar-heating subsystem, No. 1 Valve1 of valve is closed.In draw water pipeline 1 and backwater
No. 1 P1 of pipe junction arrangement pressure sensor.The effect of P1 is to monitor the pressure value at return pipe.When the pressure value of P1 is less than police
During report value, No. 1 Valve1 of valve is closed, prevent the refluence of drawing water in draw water pipeline 1.
The connection of solar-heating subsystem 2 and draw water pipeline 2, solar-heating subsystem 3 and draw water pipeline 3
Close operation principle identical with the associated working principle of above-mentioned solar-heating subsystem 1 and draw water pipeline 1.
When ignoring radiation loss, according to law of conservation of energy, solar thermal collector is supplied to the heat of recirculated water to be equal to and takes out
The heat that water is obtained.Then there is the formula to be：
Heats=M1Cp 1(Tf 1-Tr 1)=M2Cp 2(Tf 2-Tr 2)(1)
Wherein, M1It is the solar-heating subsystem circulating water flow of No. 1, unit is kg/s；Cp 1It is solar-heating
The average specific heat capacity of recirculated water of system 1, unit is J/kg；Tf 1It is the thermal-arrest of the solar-heating subsystem recirculated water of No. 1
No. 1 exit water temperature of device, unit is degree Celsius DEG C；Tr 1It is the heat collector inlet water temperature of the solar-heating subsystem recirculated water of No. 1,
Unit is DEG C；M2It is the draw water pipeline flow that draws water of No. 1, unit is kg/s；Cp 2It is the draw water pipeline avergae specific heat of drawing water of No. 1
Hold, unit is J/kg；Tf 2It is the draw water pipeline exit water temperature of No. 1, unit is DEG C；Tr 2It is the draw water pipeline inlet water temperature of No. 1,
Unit is DEG C；HeatsIt is the heat from solar thermal collector 1, unit is a watt w.
If No. 1 solar radiation amount of absorption of solar thermal collector is 800W/m2, solar thermal collector 1 is obtained
Solar energy be 8kW.When following parameter is taken, Cp 1=4200J/kg, Tf 1=40 DEG C, Tr 1=40 DEG C, Cp 2=4200J/kg, Tf 2
=40 DEG C, Tr 2=40 DEG C.The circulating water flow M of solar thermal collector 1 is understood from formula (1)1With the draw water pipeline stream that draws water of No. 1
Amount M2Respectively, M1=0.0381kg/s；M2=0.0346kg/s；Similar, the circulation of solar thermal collector 2 can be obtained
Water-carrying capacity M3With the draw water pipeline flow M that draws water of No. 24Respectively, M3=0.0762kg/s；M4=0.0693kg/s；Similar,
Understand the circulating water flow M of solar thermal collector 35With the draw water pipeline flow M that draws water of No. 36Respectively, M5=0.190kg/
s；M6=0.0173kg/s；
In engineer applied, the preferred identical temperature value of design temperature in the exit of each draw water pipeline.Otherwise, respectively draw water
Pipeline can occur the mixing of drawing water of different temperatures in boiler, easily produce the water temperature in water tank uneven.It is this uneven
Phenomenon is unfavorable for stable heating.
Boiler is wrapped up using external thermal insulation, the radiating of isolation hot water and external environment.Respectively draw water with water pump and its water pipe
Pipeline connection boiler bottom.The outlet of boiler water supply used water pipe is arranged on apart from the slightly higher position in bottom.Boiler supplies water
No. 7 Pump7 of a booster pump are connected with water pipe.Booster pump connects boiler and water supply line.Booster pump is by the warm in boiler
Water pumps into feed pipe.The shape of boiler can be cube or cylinder etc..Peep hole is opened in water tank upper.Bulky water
Case opens manhole.Mounting temperature sensor, level sensor and pressure sensor in boiler.Set when the water temperature in boiler reaches
When definite value and cistern water level are higher than early warning water level, the hot water in water tank is pumped into feed pipe by No. 7 Pump7 of booster pump.Work as boiler
When interior water level is less than early warning water level (the 10% of full water water level preferably in casing), No. 7 Pump7 of booster pump are stopped.Work as heat
When water tank pressure sensor monitors that pressure is more than setting value in case, pressure in exhaust steam valve reduction case is opened.Pressure set points
Preferably gauge pressure 5Kpa.
Claims (10)
1. a kind of novel solar water heating system, it is characterised in that the system includes：Control device, one or more sun
Can heat supply subsystem, boiler, water pump and water pipe；
Solar-heating subsystem includes solar-heating subsystem and solar energy cold water side sub-system；
Solar-heating subsystem includes solar thermal collector, cycling use of water pump, temperature sensor and water pipe；
Solar energy cold water side sub-system includes drawing water with water pump, temperature sensor, heat exchanger, valve, pressure sensor and water pipe；
Control device and solar thermal collector, heat exchanger, boiler, valve, water pump, temperature sensor and pressure sensor communication
Connect to be controlled；
Solar-heating subsystem is acted between water supply used water pipe and backwater water pipe.
2. a kind of novel solar water heating system according to claim 1, it is characterized in that when thering is multiple to build in heat supply region
When building, a solar-heating subsystem is arranged in each building roof.
3. a kind of novel solar water heating system according to claim 1, it is characterized in that the solar water heating system is located at
In the secondary heat supply network of district heating, the solar water heating system extracts the relatively low heat supply of temperature from the backwater conduit pipeline of heat supply network
Backwater, by after heating, then temperature hot water higher is added in the water supply used water pipeline of heat supply network.
4. a kind of novel solar water heating system according to claim 1, it is characterized in that multiple solar-heating subsystems
A boiler is shared, the boiler is covered using insulation material, capacity is designed according to solar energy quantity of heat production and determined, the boiler
It is placed near water return pipeline, the pressure in boiler uses atmospheric pressure.
5. a kind of novel solar water heating system according to claim 1, it is characterized in that solar thermal collector is in building
Apical grafting is obtained heat by solar irradiation, and the recirculated water in solar thermal collector is raised by temperature after heating, into heat exchanger,
In heat exchanger, the recirculated water of hot side is cooled down by the backwater of cold side, and the recirculated water after cooling enters again after being pressurized by cycling use of water pump
Enter solar thermal collector.
6. a kind of novel solar water heating system according to claim 1, uses it is characterized in that drawing water and extracting backwater with water pump
Heat supply backwater in water pipe enters the heat exchanger cold side of solar-heating subsystem, and backwater is added in heat exchanger by high temperature circulation water
Heat, subsequently into boiler；Wherein, to draw water and be placed on heat exchanger downstream with water pump, prevent heat exchanger tube hypertonia；Heat exchange
One controlled valve of device placed upstream, the Shuttoff Valve when being stopped.
7. a kind of novel solar water heating system according to claim 1, it is characterized in that in the outlet of solar thermal collector
Mounting temperature sensor, when solar thermal collector exit water temperature is more than design temperature, increases follow under control of the control means
The quantity of circulating water of ring water pump, when solar thermal collector heat collector exit water temperature is less than design temperature, in the control of control device
The lower quantity of circulating water for reducing cycling use of water pump；
In the cold side outlet port install sensor of heat exchanger, when the return water temperature of cold side outlet port is more than design temperature, filled in control
Increase the quantity of circulating water drawn water with water pump under the control put, when the return water temperature of cold side outlet port is less than design temperature, in control
The quantity of circulating water drawn water with water pump is reduced under the control of device；
When solar-heating subsystem is stopped, closes draw water with the valve on water pipe line under control of the control means
Door.
8. a kind of novel solar water heating system according to claim 1, it is characterized in that hot water tank top installs exhaust steam valve,
Peep hole, mounting temperature sensor, level sensor and pressure sensor in boiler are set.
9. a kind of novel solar water heating system according to claim 1, the use it is characterized in that boiler connection multiple is drawn water
Draw water and boiler is entered by suction pump with the backwater in water pipe line in water pipe line, each road；The delivery port connection one of boiler
Supercharging water pump, supercharging connects boiler and water supply used water pipe pipeline with water pump, and supercharging water pump is by the heat-exchanger pump in boiler
Enter water supply used water pipe；Respectively to draw water and connect boiler bottom with water pipe line, the outlet of cistern water supply water pipe is arranged on the bottom of apart from
The slightly higher position in portion.
10. a kind of novel solar water heating system according to claim 1, its feature；When the water temperature in boiler reaches
When setting value and cistern water level are higher than early warning water level, the hot water in water tank is pumped into water supply used water pipe by supercharging water pump, works as hot water
When water level is less than early warning water level in case, supercharging is stopped with water pump, when pressure is more than setting value in boiler, opens steam discharge
Valve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620920900.2U CN206291511U (en) | 2016-08-22 | 2016-08-22 | A kind of novel solar water heating system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620920900.2U CN206291511U (en) | 2016-08-22 | 2016-08-22 | A kind of novel solar water heating system |
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| CN206291511U true CN206291511U (en) | 2017-06-30 |
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| CN201620920900.2U Active CN206291511U (en) | 2016-08-22 | 2016-08-22 | A kind of novel solar water heating system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145782A (en) * | 2019-05-08 | 2019-08-20 | 桂林电子科技大学 | A kind of floor heating compound cryosar waste heat driving hollow-fibre membrane warming and humidifying system |
-
2016
- 2016-08-22 CN CN201620920900.2U patent/CN206291511U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145782A (en) * | 2019-05-08 | 2019-08-20 | 桂林电子科技大学 | A kind of floor heating compound cryosar waste heat driving hollow-fibre membrane warming and humidifying system |
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