CN103267364B - Solar-heating cold water circulating system and method thereof - Google Patents
Solar-heating cold water circulating system and method thereof Download PDFInfo
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- CN103267364B CN103267364B CN201310213625.1A CN201310213625A CN103267364B CN 103267364 B CN103267364 B CN 103267364B CN 201310213625 A CN201310213625 A CN 201310213625A CN 103267364 B CN103267364 B CN 103267364B
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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
Abstract
The invention discloses a solar-heating cold water circulating system and a method thereof. The solar-heating cold water circulating system comprises a temperature display module, a control module and a circulating module. The circulating module comprises a hot water circulating pump, an electric three-way valve, a pre-heating tank, a heat supply tank, a first electromagnetic valve, a second electromagnetic valve and a temperature difference circulating pump. A water supply system is connected with the input end of the pre-heating tank and the input end of the heat supply tank through pipelines which are provided with a closed type expansion tank and a pressure gauge, the output end of the pre-heating tank is connected with the input end of the heat supply tank through a pipeline, one output end of the electric three-way valve is connected with the input end of the pre-heating tank, and the other output end of the electric three-way valve is connected with the input end of the heat supply tank. The output ends of the heat supply tank are connected with the input end of the hot water circulating pump and a pipeline input end of each storey. The output end of the hot water circulating pump is connected with the input end of the electric three-way valve. Solar heat is used for complementing pipeline circulating heat loss, and total hot water circulating energy consumption in the whole year can be reduced by about 15-25%.
Description
Technical field
The invention belongs to solar energy heating technical field, be specifically related to a kind of solar energy heating cold water circulating system and method thereof.
Background technology
Solar energy is inexhaustible regenerative resource substantially, utilizes solar energy to carry out the solar energy optical-thermal systems technology of heating domestic hot water very ripe.The regulation of Solar use has been put into effect, in succession as a very important behave of energy-saving and emission-reduction in all parts of the country.Conventional concentrated solar water heating system, be made up of preheating can and heat supply tank, solar energy heating agent, at preheating can heating cold water, then enters heat supply tank, when heat supply tank water temperature reaches hot water supply water temperature, supplies water directly to user.Heat supply tank temperature carries out auxiliary heating lower than needing the heat medium water utilizing boiler to provide during hot water supply water temperature.Two reasons can cause auxiliary heating to enable: time 1, not enough with the more solar energy of water from preheating can come coolant-temperature gage lower and reduce heat supply tank water temperature time; Pipeline and heat exchanger heat loss during 2, few with water but hot water circuit and cause heat supply tank water temperature drop.If when when the 2nd kind of situation occurs, the sufficient preheating can temperature of solar energy is higher than heat supply tank, due to do not have water consumption or water consumption minimum, preheating can water can not fill into heat supply tank, or only have few water yield to fill into heat supply tank, be not enough to complementary heating tank heat loss, auxiliary heating must be opened, and causes solar energy to waste.Under normal circumstances, hot water circuit energy consumption accounts for 30% ~ 50% of hot water total energy consumption when normal occupancy rate, and wherein about about 50% is occur when solar energy abundance, and the solar energy that is accounting for 15 ~ 25% of total energy consumption does not utilize.
Summary of the invention
The object of the invention is for the deficiencies in the prior art, provide a kind of solar energy heating cold water circulating system and method thereof, utilize the loss of solar heat supplemental heat water circulation to reduce auxiliary heating energy consumption.
A kind of solar energy heating cold water circulating system, comprises temperature display module, control module and loop module;
Described temperature display module comprises display screen and temperature sensor, and wherein temperature sensor is separately positioned on hot water circulating pump, preheating can, heat supply tank and solar heat-collection plate; Be respectively used to the temperature detecting hot water circulating pump, preheating can, heat supply tank and solar heat-collection plate.
Described control module comprises the first control point CC1, the second control point CC2, the 3rd control point CC3, the 4th control point CC4 and the 5th control point CC5, and the first described control point CC1, the second control point CC2 are connected with the second magnetic valve with temperature-difference circulation pump, the first magnetic valve respectively with the 5th control point CC5; 3rd control point CC3, the 4th control point CC4 are connected with the two ends of electric T-shaped valve respectively;
Described loop module comprises hot water circulating pump, electric T-shaped valve, preheating can, heat supply tank, the first magnetic valve, the second magnetic valve and temperature-difference circulation pump; Preheating can is efficient storage heat exchanger, and its coefficient of heat transfer is not less than 1200kcal/m
2. DEG C .h.Or adopt plate type heat exchanger to add the combination of enclosed water tank.Heat supply tank is storage heat exchanger.
Water supply system is connected with the input of preheating can, the input of heat supply tank by pipeline, the pipeline of water supply system end is provided with enclosed expansion drum and Pressure gauge, and the pipeline between water supply system and preheating can is provided with valve, and this valve is often opened; Pipeline between water supply system and heat supply bucket is also provided with valve, and this valve is normally closed; The output of preheating can is connected by the input of pipeline with heat supply tank; An output of electric T-shaped valve is connected with the input of preheating can, and another output is connected with the input of heat supply tank; The output of heat supply tank is connected with the pipeline input of the input of hot water circulating pump, each floor; Hot water circuit delivery side of pump is connected with the input of electric T-shaped valve;
Preheating can adds hot output terminal and is connected with one end of temperature-difference circulation pump; The other end of temperature-difference circulation pump connects and is connected with the input of solar heat-collection plate, and the output of solar heat-collection plate is connected with one end of the first magnetic valve, and the other end of the first magnetic valve is connected with the heating input of preheating can; And pipeline between temperature-difference circulation pump and solar heat-collection plate is provided with enclosed expansion drum and Pressure gauge.
The hot output terminal that adds of heat supply tank is connected with one end of the second magnetic valve, and the other end of the second magnetic valve is connected with one end of heat medium pipe, and the other end and the heat supply tank of heat medium pipe heat input and be connected.
A method for solar energy heating circulating chilled water, specific as follows:
Step 1. adopts the preheating can of series connection and heat supply tank to carry out respectively heating and heat accumulation, when cold water is delivered into preheating can by pipeline by water supply system, if when the temperature difference between the temperature T1 of temperature display module display solar heat-collection plate and the temperature T2 of preheating can is more than or equal to 8 DEG C, control module is by the first control point CC1, second control point CC2 controls temperature-difference circulation pump and the first magnetic valve is opened, the heating agent that solar heat-collection plate produces preheats the water in preheating can, until the temperature difference between the temperature T1 of temperature display module display solar heat-collection plate and the temperature T2 of preheating can is less than or equal to 3 DEG C, control module controls the first magnetic valve and temperature-difference circulation pump is closed,
If when the hot water temperature T4 that the display of step 2. temperature display module enters hot water circulating pump is less than the hot water temperature T2 of preheating can, show that in preheating can, water temperature is lower, the hot water entering hot water circulating pump can not be used for complementary heating tank heat loss, then control module is communicated with preheating can by the 3rd control point CC3 control electric T-shaped valve, until the hot water temperature T4 of temperature display module display hot water circulating pump is more than or equal to the hot water temperature T2 of preheating can; If when the hot water temperature T4 that temperature display module display enters hot water circulating pump is greater than the hot water temperature T2 of preheating can, show that in preheating can, water temperature is higher, the hot water entering hot water circulating pump can be used in complementary heating tank heat loss, then control module cross the 4th control point CC4 control electric T-shaped valve communicate with heat supply tank.
If when the display of step 3. temperature display module reaches supply water temperature T3 from the hot water temperature T2 that preheating can enters heat supply tank, then heat supply tank water temperature does not decline, and control module closes the second magnetic valve by the 5th control point CC5, and heat supply tank is starting trouble heating medium for heating not; If when the hot water temperature T2 that temperature display module display enters heat supply tank from preheating can is lower than supply water temperature T3, then cause heat supply tank water temperature drop, control module opens the second magnetic valve 6 by the 5th control point CC5, heat supply tank starting trouble heating medium for heating, until the hot water temperature T2 that temperature display module display enters heat supply tank from preheating can reaches setting supply water temperature T3, control module closes the second magnetic valve by the 5th control point CC5, stops boiler heating medium for heating.
Described hot water circulating pump by Project design people as requested system select
The model of described electric T-shaped valve is the dedicated three-way selector valve with electric operator, is opening a direction water stream channel and close simultaneously the water stream channel in another direction.
The model of described preheating can is DBRV Series of Water-water capacity stacking type heat exchanger
The model of described heat supply tank is RV Series of Water (vapour)-water capacity stacking type heat exchanger
The model of described temperature-difference circulation pump is supporting by solar energy integrator.
Beneficial effect of the present invention is as follows:
The present invention, when solar energy is sufficient, does not need to use auxiliary heating source for heating heat supply tank.When preheating can temperature is enough high, hot water return enters preheating can by electric three passes Vavle switching, utilizes solar heat to supplement piping loop heat loss, can reduce annual hot water circuit total energy consumption about 15 ~ 25%.
Accompanying drawing explanation
Fig. 1 is structural principle block diagram of the present invention.
In figure, hot water circulating pump 1, electric T-shaped valve 2, preheating can 3, heat supply tank 4, first magnetic valve 5, second magnetic valve 6, temperature-difference circulation pump 7, first enclosed expansion drum 8-1, the second enclosed expansion drum 8-2, the first Pressure gauge 9-1, the second Pressure gauge 9-2, solar heat-collection plate 10.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in Figure 1, a kind of solar energy heating cold water circulating system, comprises temperature display module, control module and loop module;
Described temperature display module comprises display screen and temperature sensor, and wherein temperature sensor is separately positioned on hot water circulating pump, preheating can, heat supply tank and solar heat-collection plate; Be respectively used to the temperature detecting hot water circulating pump, preheating can, heat supply tank and solar heat-collection plate.
Described control module comprises the first control point CC1, the second control point CC2, the 3rd control point CC3, the 4th control point CC4 and the 5th control point CC5, and the first described control point CC1, the second control point CC2 are connected with the second magnetic valve with temperature-difference circulation pump, the first magnetic valve respectively with the 5th control point CC5; 3rd control point CC3, the 4th control point CC4 are connected with the two ends of electric T-shaped valve respectively;
Described loop module comprises hot water circulating pump 1, electric T-shaped valve 2, preheating can 3, heat supply tank 4, first magnetic valve 5, second magnetic valve 6 and temperature-difference circulation pump 7; Preheating can 3 is efficient storage heat exchanger, and its coefficient of heat transfer is not less than 1200kcal/m
2. DEG C .h, or adopt plate type heat exchanger to add the combination of enclosed water tank.Heat supply tank 4 is storage heat exchanger.
Water supply system is connected with the input of preheating can 3, the input of heat supply tank 4 by pipeline, the pipeline of water supply system end is provided with the first enclosed expansion drum 8-1 and the first Pressure gauge 9-1, pipeline between water supply system and preheating can 3 is provided with valve, and this valve is often opened; Pipeline between water supply system and heat supply tank 4 is also provided with valve, and this valve is normally closed; The output of preheating can 3 is connected by the input of pipeline with heat supply tank 4; An output of electric T-shaped valve 2 is connected with the input of preheating can 3, and another output is connected with the input of heat supply tank 4; The output of heat supply tank 4 is connected with the pipeline input of the input of hot water circulating pump 1, each floor; The output of hot water circulating pump 1 is connected with the input of electric T-shaped valve 2;
Preheating can adds hot output terminal and is connected with one end of temperature-difference circulation pump 7; The other end of temperature-difference circulation pump 7 connects and is connected with the input of solar heat-collection plate 10, and the output of solar heat-collection plate 10 is connected with one end of the first magnetic valve 5, and the other end and the preheating can of the first magnetic valve 5 heat input and be connected; And pipeline between temperature-difference circulation pump 7 and solar heat-collection plate is provided with the second enclosed expansion drum 8-2 and the second Pressure gauge 9-2.
The hot output terminal that adds of heat supply tank is connected with one end of the second magnetic valve 6, and the other end of the second magnetic valve 6 is connected with one end of heat medium pipe, and the other end and the heat supply tank of heat medium pipe heat input and be connected.
Solar energy heating cold water circulating system adopts the preheating can 3 of series connection and heat supply tank 4 to carry out heating and heat accumulation.When cold water enters preheating can 3, the heating agent that solar heat-collection plate produces preheats preheating can 3, and the hot water after preheating enters heat supply tank 4, and supplies water to each floor by heat supply tank 4.
A method for solar energy heating circulating chilled water, specific as follows:
Step 1. adopts the preheating can of series connection and heat supply tank to carry out respectively heating and heat accumulation, when cold water is delivered into preheating can by pipeline by water supply system, if when the temperature difference between the temperature T1 of temperature display module display solar heat-collection plate and the temperature T2 of preheating can is more than or equal to 8 DEG C, control module is by the first control point CC1, second control point CC2 controls temperature-difference circulation pump and the first magnetic valve is opened, the heating agent that solar heat-collection plate produces preheats the water in preheating can, until the temperature difference between the temperature T1 of temperature display module display solar heat-collection plate and the temperature T2 of preheating can is less than or equal to 3 DEG C, control module controls the first magnetic valve and temperature-difference circulation pump is closed,
If when the hot water temperature T4 that the display of step 2. temperature display module enters hot water circulating pump is less than the hot water temperature T2 of preheating can, show that in preheating can, water temperature is lower, the hot water entering hot water circulating pump can not be used for complementary heating tank heat loss, then control module is communicated with preheating can by the 3rd control point CC3 control electric T-shaped valve, until the hot water temperature T4 of temperature display module display hot water circulating pump is more than or equal to the hot water temperature T2 of preheating can; If when the hot water temperature T4 that temperature display module display enters hot water circulating pump is greater than the hot water temperature T2 of preheating can, show that in preheating can 3, water temperature is higher, the hot water entering hot water circulating pump can be used in complementary heating tank heat loss, then control module cross the 4th control point CC4 control electric T-shaped valve communicate with heat supply tank.
If when the display of step 3. temperature display module reaches supply water temperature T3 from the hot water temperature T2 that preheating can enters heat supply tank, then heat supply tank water temperature does not decline, and control module closes the second magnetic valve by the 5th control point CC5, and heat supply tank is starting trouble heating medium for heating not; If when the hot water temperature T2 that temperature display module display enters heat supply tank from preheating can is lower than supply water temperature T3, then cause heat supply tank water temperature drop, control module opens the second magnetic valve 6 by the 5th control point CC5, heat supply tank starting trouble heating medium for heating, until the hot water temperature T2 that temperature display module display enters heat supply tank from preheating can reaches setting supply water temperature T3, control module closes the second magnetic valve by the 5th control point CC5, stops boiler heating medium for heating.
The concrete simplification course of work is as follows:
1, when the temperature difference between the temperature T1 and the temperature T2 of preheating can 3 of solar heat-collection plate is more than or equal to 8 DEG C, temperature-difference circulation pump 7 and the first magnetic valve 5 are opened; When temperature difference between the temperature T1 and the temperature T2 of preheating can 3 of solar heat-collection plate is less than or equal to 3 DEG C, the first magnetic valve 5 and temperature-difference circulation pump 7 are closed.
2, when the hot water temperature T4 entering hot water circulating pump 1 is less than the hot water temperature T2 of preheating can 3, show that in preheating can 3, water temperature is lower, the hot water entering hot water circulating pump 1 can not be used for complementary heating tank 4 heat loss, and electric T-shaped valve 2 communicates with preheating can 3; When the hot water temperature T4 entering hot water circulating pump 1 is greater than the hot water temperature T2 of preheating can 3, show that in preheating can 3, water temperature is higher, the hot water entering hot water circulating pump 1 may be used for complementary heating tank 4 heat loss, and electric T-shaped valve 2 communicates with heat supply tank 4.
3, when the hot water temperature entering heat supply tank 4 from preheating can 3 reaches supply water temperature T3, can not cause heat supply tank 4 water temperature drop, the second magnetic valve 6 cuts out, and heat supply tank 4 can not starting trouble heating medium for heating; When the hot water temperature entering heat supply tank 4 from preheating can 3 is lower than supply water temperature T3, can cause heat supply tank 4 water temperature drop, the second magnetic valve 6 is opened, heat supply tank 4 starting trouble heating medium for heating, reach the second magnetic valve 6 when setting supply water temperature to close, stop boiler heating medium for heating.
Claims (4)
1. a solar energy heating cold water circulating system, is characterized in that comprising temperature display module, control module and loop module;
Described temperature display module comprises display screen and temperature sensor, and wherein temperature sensor is separately positioned on hot water circulating pump, preheating can, heat supply tank and solar heat-collection plate; Be respectively used to the temperature detecting hot water circulating pump, preheating can, heat supply tank and solar heat-collection plate;
Described control module comprises the first control point CC1, the second control point CC2, the 3rd control point CC3, the 4th control point CC4 and the 5th control point CC5, and the first described control point CC1, the second control point CC2 are connected with the second magnetic valve with temperature-difference circulation pump, the first magnetic valve respectively with the 5th control point CC5; 3rd control point CC3, the 4th control point CC4 are connected with the two ends of electric T-shaped valve respectively;
Described loop module comprises hot water circulating pump, electric T-shaped valve, preheating can, heat supply tank, the first magnetic valve, the second magnetic valve and temperature-difference circulation pump; Water supply system is connected with the input of preheating can, the input of heat supply tank by pipeline, the pipeline of water supply system end is provided with enclosed expansion drum and Pressure gauge, and the pipeline between water supply system and preheating can is provided with valve, and this valve is often opened; Pipeline between water supply system and heat supply tank is also provided with valve, and this valve is normally closed; The output of preheating can is connected by the input of pipeline with heat supply tank; An output of electric T-shaped valve is connected with the input of preheating can, and another output is connected with the input of heat supply tank; The output of heat supply tank is connected with the pipeline input of the input of hot water circulating pump, each floor; Hot water circuit delivery side of pump is connected with the input of electric T-shaped valve;
Preheating can adds hot output terminal and is connected with one end of temperature-difference circulation pump; The other end of temperature-difference circulation pump is connected with the input of solar heat-collection plate, and the output of solar heat-collection plate is connected with one end of the first magnetic valve, and the other end of the first magnetic valve is connected with the heating input of preheating can; And pipeline between temperature-difference circulation pump and solar heat-collection plate is provided with enclosed expansion drum and Pressure gauge;
The hot output terminal that adds of heat supply tank is connected with one end of the second magnetic valve, and the other end of the second magnetic valve is connected with one end of heat medium pipe, and the other end and the heat supply tank of heat medium pipe heat input and be connected.
2. a kind of solar energy heating cold water circulating system as claimed in claim 1, it is characterized in that preheating can is efficient storage heat exchanger, its coefficient of heat transfer is not less than 1200kcal/m
2. DEG C .h, heat supply tank is storage heat exchanger.
3. a kind of solar energy heating cold water circulating system as claimed in claim 1, is characterized in that preheating can is that plate type heat exchanger adds the combination of enclosed water tank.
4. a method for solar energy heating circulating chilled water, is characterized in that following steps:
Step 1. adopts the preheating can of series connection and heat supply tank to carry out respectively heating and heat accumulation, when cold water is delivered into preheating can by pipeline by water supply system, if when the temperature difference between the temperature T1 of temperature display module display solar heat-collection plate and the temperature T2 of preheating can is more than or equal to 8 DEG C, control module is by the first control point CC1, second control point CC2 controls temperature-difference circulation pump and the first magnetic valve is opened, the heating agent that solar heat-collection plate produces preheats the water in preheating can, until the temperature difference between the temperature T1 of temperature display module display solar heat-collection plate and the temperature T2 of preheating can is less than or equal to 3 DEG C, control module controls the first magnetic valve and temperature-difference circulation pump is closed,
If when the hot water temperature T4 that the display of step 2. temperature display module enters hot water circulating pump is less than the hot water temperature T2 of preheating can, show that in preheating can, water temperature is lower, the hot water entering hot water circulating pump can not be used for complementary heating tank heat loss, then control module is communicated with preheating can by the 3rd control point CC3 control electric T-shaped valve, until the hot water temperature T4 of temperature display module display hot water circulating pump is more than or equal to the hot water temperature T2 of preheating can; If when the hot water temperature T4 that temperature display module display enters hot water circulating pump is greater than the hot water temperature T2 of preheating can, show that in preheating can, water temperature is higher, the hot water entering hot water circulating pump can be used in complementary heating tank heat loss, then control module is communicated with heat supply tank by the 4th control point CC4 control electric T-shaped valve;
If when the display of step 3. temperature display module reaches supply water temperature T3 from the hot water temperature T2 that preheating can enters heat supply tank, then heat supply tank water temperature does not decline, and control module closes the second magnetic valve by the 5th control point CC5, and heat supply tank is starting trouble heating medium for heating not; If when the hot water temperature T2 that temperature display module display enters heat supply tank from preheating can is lower than supply water temperature T3, then cause heat supply tank water temperature drop, control module opens the second magnetic valve by the 5th control point CC5, heat supply tank starting trouble heating medium for heating, until the hot water temperature T2 that temperature display module display enters heat supply tank from preheating can reaches setting supply water temperature T3, control module closes the second magnetic valve by the 5th control point CC5, stops boiler heating medium for heating.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310213625.1A CN103267364B (en) | 2013-05-31 | 2013-05-31 | Solar-heating cold water circulating system and method thereof |
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| CN201310213625.1A CN103267364B (en) | 2013-05-31 | 2013-05-31 | Solar-heating cold water circulating system and method thereof |
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| CN103267364B true CN103267364B (en) | 2014-12-17 |
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| CN103954049B (en) * | 2014-05-15 | 2016-01-20 | 吴砺 | A kind of solar thermal collector |
| CN109579316A (en) * | 2019-01-10 | 2019-04-05 | 上海彦安机电工程有限公司 | Energy automatic regulating system overheat and the control system of enclosed heat-exchange system fluid infusion pressure stabilizing |
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| JPS58195749A (en) * | 1982-05-11 | 1983-11-15 | Matsushita Electric Ind Co Ltd | Apparatus to heat water in swimming pool utilizing solar heat |
| CN1460822A (en) * | 2003-06-13 | 2003-12-10 | 上海理工大学 | Energy source complementation type all-weather solar hot water supply system |
| CN201575613U (en) * | 2009-12-21 | 2010-09-08 | 陈书生 | Heat-accumulating type plate changing solar energy collector system |
| CN201954756U (en) * | 2010-11-30 | 2011-08-31 | 罗益龙 | Boiled water auxiliary heating type solar energy hot water set |
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