CN215412073U - Low-cost operation geothermal heating-energy storage integrated system - Google Patents
Low-cost operation geothermal heating-energy storage integrated system Download PDFInfo
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- CN215412073U CN215412073U CN202121244907.4U CN202121244907U CN215412073U CN 215412073 U CN215412073 U CN 215412073U CN 202121244907 U CN202121244907 U CN 202121244907U CN 215412073 U CN215412073 U CN 215412073U
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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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
- Y02B10/40—Geothermal heat-pumps
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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
- Y02E10/10—Geothermal energy
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Abstract
The utility model relates to a low-cost operation geothermal heating-energy storage integrated system, wherein one branch of a heat exchange outlet end of a high-temperature plate type heat exchanger is connected with an inlet end of a water collector, the other branch of the heat exchange outlet end of the heat pump unit is connected with an inlet end of an energy storage device, an outlet end of the water collector is connected with an inlet end of a user, the user outlet end is provided with a water separator, one branch of an outlet end of the water separator is connected with a heat exchange inlet end of the high-temperature plate type heat exchanger, the other branch of the outlet end of the heat pump unit is connected with an inlet end of the water collector in a converging manner, the other branch of the outlet end of the energy storage device is connected with an inlet end of the high-temperature plate type heat exchanger, the other branch of the outlet end of the energy storage device is connected with an inlet end of the heat pump unit, and the other branch of the outlet end of the water collector is connected with the water separator and flows back to the energy storage device to form an energy-releasing heating loop. The system utilizes three heating modes of geothermal direct heating, heat pump system heating and energy storage device heating to balance the pressure of each part, so that the heating and energy storage can run efficiently.
Description
Technical Field
The utility model belongs to the field of geothermal resource utilization, relates to a geothermal heating-energy storage technology, and particularly relates to a geothermal heating-energy storage integrated system operating at low cost.
Background
With the increasing global energy demand, the environmental pollution problem becomes more serious, so the development and utilization of renewable energy sources become the main direction of energy development nowadays. The geothermal energy is widely applied to various fields of power generation, heating and the like due to the advantages of large storage capacity, stability, reliability and the like.
But the geothermal resources in China are mainly medium-low temperature geothermal heat, so that the geothermal resources suitable for power generation are few, and most geothermal resources are suitable for the fields with heat demands, such as heating. At present, most geothermal heating is a geothermal water direct supply mode, the geothermal return water temperature of the mode is high, waste of geothermal resources is caused, and meanwhile, related policies are issued by the nation, the geothermal return water temperature is required to be reduced, and the utilization efficiency of geothermal resources is improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art, and provides a low-cost operation geothermal heating-energy storage integrated system which realizes high-efficiency utilization of geothermal energy and solves the problems of overhigh return water temperature, high system operation cost and the like of the conventional heating system.
The technical problem to be solved by the utility model is realized by adopting the following technical scheme:
a geothermal heating-energy storage integrated system running at low cost comprises a hot water well, wherein the outlet end of the hot water well is connected with the inlet end of an interlayer of a high-temperature plate type heat exchanger, one branch of the heat exchange outlet end of the high-temperature plate type heat exchanger is connected with the inlet end of a water collector, the other branch of the heat exchange outlet end of the high-temperature plate type heat exchanger is connected with the inlet end of an energy storage device, the outlet end of the water collector is connected to the user inlet end, a water separator is arranged at the user outlet end, one outlet end of the water separator is connected to a heat exchange inlet end of the high-temperature plate type heat exchanger, one outlet end of the heat pump unit is connected to an inlet end of the water collector, the other outlet end of the heat pump unit is connected to an inlet end of the energy storage device, the other outlet end of the energy storage device is connected to an inlet end of the high-temperature plate type heat exchanger, the other outlet end of the energy storage device is connected to an inlet end of the heat pump unit, and the other outlet end of the water collector is connected with an energy release heating loop which is formed in the energy storage device through backflow of the water separator.
And a low-temperature plate heat exchanger is arranged on one side of the heat pump unit, the outlet end of the interlayer of the high-temperature plate heat exchanger is connected to the inlet end of the interlayer of the low-temperature plate heat exchanger, and the outlet end of the interlayer of the low-temperature plate heat exchanger is connected to the recharging well in a backflow mode.
And the energy storage device is a horizontal energy storage water tank, a first heat supply pump is arranged between the energy storage device and the water collector, and a second heat supply pump is arranged between the energy storage device and the heat pump unit.
And a third heat supply pump is arranged between the outlet end of the water separator and the inlet end of the heat pump unit.
And a circulating water pump is arranged between the low-temperature plate type heat exchanger and the heat pump unit, and a water suction pump is arranged between the outlet end of the hot water well and the high-temperature plate type heat exchanger.
The utility model has the advantages and positive effects that:
1. the low-cost operation geothermal heating-energy storage integrated system provided by the utility model adopts two heat sources to store energy for the energy storage device: the first heat source is high-temperature geothermal water which directly stores energy for the energy storage device after heat exchange of the high-temperature plate heat exchanger; the second heat source is a heat pump system, and the high-temperature geothermal water is subjected to heat exchange through a high-temperature plate heat exchanger, then the temperature of the geothermal water is reduced, and the geothermal water is heated through the heat pump system and then stores energy for the energy storage device.
2. The low-cost operation geothermal heating-energy storage integrated system provided by the utility model adopts an electric valve automatic control system, and the system automatically switches between the operation modes of direct heating, heat pump system heating, energy storage of the energy storage device and energy release of the energy storage device through automatic control.
3. The low-cost geothermal heating-energy storage integrated system provided by the utility model adopts the water distributor and the water collector to adjust the pressure of supply and return water of a user, adopts three heating modes of geothermal direct heating, heat pump system heating and energy storage device heating, and adopts the water distributor and the water collector to balance the pressure of each part due to different pressures of the three heating modes, so that the heating and energy storage can be operated efficiently.
4. The low-cost operation geothermal heating-energy storage integrated system provided by the utility model adopts the horizontal energy storage water tank as the energy storage device, solves the problems of difficult site selection, large occupied area, overhigh water pressure and the like in the prior art, and can effectively reduce the construction cost of the energy storage device.
5. The low-cost operation geothermal heating-energy storage integrated system provided by the utility model adopts an operation strategy of utilizing peak-valley electricity price, the system is operated at the valley electricity price at night, the energy storage device is stored by the geothermal direct heating system and the heat pump system, the energy storage device is firstly operated to release heat energy to heat a user at the peak electricity price in the daytime, and the geothermal direct heating and heat pump system are adopted to heat after the heat energy in the energy storage device is released, so that the operation strategy effectively reduces the operation time of the system at the peak electricity price and reduces the operation cost of the system.
6. The system adopts the branch and water collector to adjust the supply and return water pressure of a user, adopts three heating modes of geothermal direct heating, heat pump system heating and energy storage device heating, balances the pressure of each part, enables the heating and energy storage to operate efficiently, can realize the sectional utilization of the geothermal temperature, and simultaneously utilizes the peak-valley electricity price to realize the low-cost operation of the system.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a schematic view of the geothermal direct heating-heat pump system heating flow direction of the present invention;
FIG. 3 is a schematic diagram of the energy storage flow of the geothermal direct energy storage-heat pump system according to the present invention;
FIG. 4 is a schematic diagram of the flow of energy released by the energy storage device for heating in accordance with the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments, which are illustrative only and not limiting, and the scope of the present invention is not limited thereby.
A geothermal heating-energy storage integrated system running at low cost is shown in figure 1 and comprises a hot water well 12, wherein the outlet end of the hot water well is connected with the interlayer inlet end of a high-temperature plate type heat exchanger 14, one heat exchange outlet end of the high-temperature plate type heat exchanger is connected with the inlet end of a water collector 15, the other heat exchange outlet end of the high-temperature plate type heat exchanger is connected with the inlet end of an energy storage device 3, the outlet end of the water collector is connected with the inlet end of a user 1, a water separator 16 is arranged at the outlet end of the user, one outlet end of the water separator is connected to the heat exchange inlet end of the high-temperature plate type heat exchanger, one outlet end of the heat pump unit is connected to the inlet end of the water collector in a converging manner with the heat exchange outlet end of the high-temperature plate type heat exchanger, the other outlet end of the energy storage device is connected to the inlet end of the high-temperature plate type heat exchanger, one outlet end of the energy storage device is connected to the inlet end of the heat pump unit, and the other branch is connected with the inlet of the water collector and flows back to the energy storage device through one branch of the water distributor to form an energy-releasing heating loop of the energy storage device.
A low-temperature plate type heat exchanger 11 is arranged on one side of the heat pump unit, the interlayer outlet end of the high-temperature plate type heat exchanger is connected to the interlayer inlet end of the low-temperature plate type heat exchanger, and the interlayer outlet end of the low-temperature plate type heat exchanger is connected to a recharging well 10 in a backflow mode.
The energy storage device is a horizontal energy storage water tank, a heat supply pump 2 is arranged between the energy storage device and the water collector, and a heat supply pump 5 is arranged between the energy storage device and the heat pump unit.
A heat supply pump 5 is arranged between the outlet end of the water separator and the inlet end of the heat pump unit.
A circulating water pump 9 is arranged between the low-temperature plate heat exchanger and the heat pump unit.
A water suction pump 13 is arranged between the outlet end of the hot water well and the high-temperature plate heat exchanger.
The working principle of the utility model is as follows:
as shown in fig. 2, during the heating phase, valves V1, V3, V4, V5, V7, V8, and V9 are opened, and valves V2, V6, V10, and V11 are closed.
Meanwhile, high-temperature geothermal water flows through the high-temperature plate heat exchanger after being pumped out from the outlet of the geothermal well, and heat is transferred to the low-temperature plate heat exchanger after being supplied with hot water. And hot water is heated in the high-temperature plate heat exchanger, flows through the water collector according to the adjustment of the electric valve, is conveyed to a user for heating through the pump, flows to the water separator and returns to the high-temperature plate heat exchanger to complete circulation.
Meanwhile, geothermal water which is discharged by the high-temperature plate heat exchanger flows through the low-temperature plate heat exchanger to transfer heat to circulating water, and then is conveyed back to the inlet of the geothermal well to finish recharging.
The heat pump unit comprises a condenser 6 and an evaporator 8, circulating water absorbs heat in the low-temperature plate heat exchanger and flows to the heat pump system evaporator, heat is transferred to working media of the heat pump system, the working media are evaporated after absorbing heat, enter the heat pump system condenser to release heat after being compressed by the working media pump, and then enter the secondary evaporator after being throttled by the throttle valve to complete circulation. The heating water absorbs heat in a condenser of the heat pump system, flows to a water collector, is conveyed to a user by a pump for heating, flows to a water separator and then flows to the condenser of the heat pump system to complete circulation.
As shown in fig. 3, during the energy storage phase, valves V4, V6, V7, V8, V9, V10 are open, and valves V1, V2, V3, V5, V11 are closed.
Meanwhile, when a user does not have a heating demand, the heating water absorbed by the high-temperature plate heat exchanger stores energy for the energy storage device. Meanwhile, the hot water absorbed in the heat pump condenser is supplied to the energy storage device for storing energy.
As shown in fig. 4, during the energy release phase, valves V1, V2, V11 are open, valves V3, V4, V5, V6, V7, V8, V9, V10 are closed.
Meanwhile, when a user has a heat demand, the energy storage device conveys heating water to the water collector, then the heating water is conveyed to the user by the pump, then the heating water is conveyed to the water separator, and finally the heating water returns to the energy storage device to complete circulation.
Although the embodiments of the present invention and the accompanying drawings are disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the utility model and the appended claims, and therefore the scope of the utility model is not limited to the disclosure of the embodiments and the accompanying drawings.
Claims (5)
1. The utility model provides a geothermal heating-energy storage integration system of low-cost operation, includes the hot-water well, and the intermediate layer entry end of high temperature plate heat exchanger is connected to the hot-water well exit end, its characterized in that: one branch of heat exchange outlet end of the high-temperature plate type heat exchanger is connected with the inlet end of a water collector, the other branch is connected with the inlet end of an energy storage device, the outlet end of the water collector is connected to the inlet end of a user, a water separator is arranged at the outlet end of the user, one branch of outlet end of the water separator is connected to the heat exchange inlet end of the high-temperature plate type heat exchanger, one branch is connected to the inlet end of the water collector, the other branch is connected to the inlet end of the energy storage device, one branch of outlet end of the energy storage device is connected to the inlet end of the high-temperature plate type heat exchanger, one branch is connected to the inlet end of the heat pump, and the other branch connected with the inlet of the water collector and flows back to the energy storage device through the water separator to form an energy-releasing heating loop of the energy storage device.
2. A low cost geothermal heating-energy storage integrated system as defined in claim 1 wherein: and a low-temperature plate type heat exchanger is arranged on one side of the heat pump unit, the interlayer outlet end of the high-temperature plate type heat exchanger is connected to the interlayer inlet end of the low-temperature plate type heat exchanger, and the interlayer outlet end of the low-temperature plate type heat exchanger is connected to the recharging well in a backflow mode.
3. A low cost geothermal heating-energy storage integrated system as defined in claim 1 wherein: the energy storage device is a horizontal energy storage water tank, a first heat supply pump is arranged between the energy storage device and the water collector, and a second heat supply pump is arranged between the energy storage device and the heat pump unit.
4. A low cost geothermal heating-energy storage integrated system as defined in claim 1 wherein: and a third heat supply pump is arranged between the outlet end of the water separator and the inlet end of the heat pump unit.
5. A low cost geothermal heating-energy storage integrated system as defined in claim 1 wherein: a circulating water pump is arranged between the low-temperature plate type heat exchanger and the heat pump unit, and a water suction pump is arranged between the outlet end of the hot water well and the high-temperature plate type heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121244907.4U CN215412073U (en) | 2021-06-04 | 2021-06-04 | Low-cost operation geothermal heating-energy storage integrated system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121244907.4U CN215412073U (en) | 2021-06-04 | 2021-06-04 | Low-cost operation geothermal heating-energy storage integrated system |
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| Publication Number | Publication Date |
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| CN215412073U true CN215412073U (en) | 2022-01-04 |
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| CN202121244907.4U Active CN215412073U (en) | 2021-06-04 | 2021-06-04 | Low-cost operation geothermal heating-energy storage integrated system |
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2021
- 2021-06-04 CN CN202121244907.4U patent/CN215412073U/en active Active
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