CN115638567A - Cold and heat source system with ground source heat pump and aquifer energy storage coupled and regulation and control method thereof - Google Patents
Cold and heat source system with ground source heat pump and aquifer energy storage coupled and regulation and control method thereof Download PDFInfo
- Publication number
- CN115638567A CN115638567A CN202211180604.XA CN202211180604A CN115638567A CN 115638567 A CN115638567 A CN 115638567A CN 202211180604 A CN202211180604 A CN 202211180604A CN 115638567 A CN115638567 A CN 115638567A
- Authority
- CN
- China
- Prior art keywords
- cold
- heat
- circulating pump
- well
- heat exchanger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention discloses a cold and heat source system of ground source heat pump and aquifer energy storage coupling and a regulation and control method thereof, relating to the technical field of renewable energy sources and solving the technical problem of low efficiency of the ground source heat pump system caused by the problem of rock-soil thermal imbalance; in the heat supply working condition, the heat pump unit and the aquifer energy storage system are used for carrying out combined heat supply; meanwhile, under the condition that the safety range allows, the pumping and filling water flow is increased, effective seepage is formed in the aquifer between pumping and filling pairs of wells, and the pumping and filling water flow is used for strengthening heat exchange between the underground pipe group and the peripheral seepage rock soil. This application is through combining together shallow ground source heat pump and aquifer energy storage system, effectively balances building load demand and geothermal energy supply, realizes that the efficient strides season geothermal energy building and uses.
Description
Technical Field
The application relates to the technical field of renewable energy sources, in particular to a cold and heat source system with a ground source heat pump and aquifer energy storage coupled and a regulation and control method thereof.
Background
The ground source heat pump system is one of renewable energy technologies for heating and cooling, has environmental friendliness and sustainability, and has great development potential in the market.
The ground source heat pump system takes a soil source as a low-temperature heat source, and the cold and heat balance of a soil body must be considered in the project design and application process, otherwise, the underground energy accumulation effect is caused, and the unit operation is further influenced. In the calculation period, the annual total heat release quantity and the annual total heat absorption quantity of the ground source heat pump buried pipe system are basically balanced, and the ratio of the annual total heat release quantity to the annual total heat absorption quantity is preferably 0.8-1.25.
For buildings mainly used for refrigeration in summer, hot and winter areas in China, the cold and heat supply load and time duration are far longer than those of heat supply, and the ground source side can generate a 'heat accumulation' phenomenon when running under the condition of cold and heat imbalance for a long time, so that the performance of a ground source heat pump system is gradually reduced, and even the ground source heat pump system cannot be used. If auxiliary systems are added blindly to alleviate the thermal imbalance problem, the initial investment, the operating cost and the control complexity of the system are increased.
The problem of heat imbalance of a ground source heat pump system caused by cold and heat load imbalance of a building can be relieved through seasonal energy storage, and one of the ground source heat pump system and the ground source heat pump system is an underground aquifer energy storage system. The aquifer energy storage system has low cost, high storage capacity and cold/heat storage efficiency of 68-87%. The water storage temperature of the low-temperature aquifer energy storage system does not exceed 25 ℃ generally, so that free cold supply of the system can be realized at a low water storage temperature, and the energy efficiency of the system is high. But simultaneously, the aquifer energy storage system also has the problem of thermal imbalance, so that the heat breakthrough of pumping and filling to wells is expanded year by year, and the system performance is reduced.
Disclosure of Invention
The application provides a cold and heat source system for energy storage coupling of a ground source heat pump and an aquifer and a regulation and control method thereof, and the technical purpose is to solve the problems of performance coefficient reduction and shutdown of the ground source heat pump caused by the thermal unbalance problem of the ground source heat pump system.
The technical purpose of the present application is specifically achieved by the following technical solutions:
a ground source heat pump and aquifer energy storage coupled cold and heat source system comprises a cold well, a hot well, a ground buried pipe, a cold well side circulating pump bypass valve, a plate type heat exchanger side bypass valve, a hot well side circulating pump bypass valve, a heat exchanger to heat pump unit valve, a heat exchanger to tail end coil pipe valve, a ground buried pipe side circulating pump, a ground buried pipe side valve, a heat pump unit and a tail end coil pipe;
the cold well side circulating pump is connected with the cold well side circulating pump bypass valve in parallel; the plate heat exchanger is connected with a bypass valve at the side of the plate heat exchanger in parallel; the hot well side circulating pump is connected with a hot well side circulating pump bypass valve in parallel;
the cold well is connected with the tail end coil pipe through a cold well side circulating pump, a plate type heat exchanger, a heat exchanger-to-heat pump unit valve and a heat pump unit in sequence; or the heat exchanger is connected with the end coil pipe through a cold well side circulating pump and a heat exchanger to end coil pipe valve in sequence;
the heat well is connected with the tail end coil pipe through a heat well side circulating pump, a plate type heat exchanger, a heat exchanger-to-heat pump unit valve and a heat pump unit in sequence;
the buried pipe is connected with the tail end coil pipe sequentially through a buried pipe side circulating pump, a buried pipe side valve and a heat pump unit.
In the cold supply working condition, when the cold load of the cold well can completely meet the required cold quantity, the cold load of the building is completely provided by the cold well; when the cold load of the cold well does not meet the required cold quantity and the cold quantity is sufficient, the cold load of the building mainly takes the cold well, and the buried pipe assists in supplying cold; when the cold load of the cold well does not meet the required cold quantity and the cold quantity is exhausted, the cold load of the building is provided by the buried pipe. In the heating working condition, when the building heat load demand is smaller, the heat required by the building heat load is provided by the heat well; when the building heat load is large, the heat required by the building heat load is provided by the combination of the heat well and the buried pipe.
When the cold well cannot meet the cold quantity required by the cold load, the residual cold quantity is supplied to the tail end coil pipe by a buried pipe through a heat pump unit; if the cold well internal cooling capacity as the pumping well is exhausted, the cold well internal cooling capacity is independently supplied to the tail end coil pipe through the heat pump unit by the underground pipe;
in the working condition of heat supply, when the heat load demand is smaller, the heat well serving as the recharging well is used for supplying heat required by the heat load to the tail end coil pipe through the plate heat exchanger and the heat pump unit; when the heat load demand is large, the plate heat exchanger and the buried pipe jointly supply heat to the tail end coil pipe, and the residual heat is supplied to the tail end coil pipe by the buried pipe through the heat pump unit.
The beneficial effect of this application lies in:
(1) The technical problem that the ground source heat pump system is low in efficiency due to the problem of rock-soil thermal imbalance is solved, and the problem of thermal imbalance between the ground source heat pump and the aquifer energy storage system can be effectively solved;
(2) During the cold supply working condition, the cold quantity of a cold well in the aquifer energy storage system is preferentially utilized to obtain free cold supply of the aquifer energy storage system, an auxiliary cold source is provided for a ground source heat pump system mainly for cold supply, and heat accumulation near a buried pipe in the ground source heat pump system is reduced;
(3) When the system is in a heat supply working condition, the heat of a hot well in the aquifer energy storage system is preferentially utilized, if the building heat load is large, the required heat load is provided by the hot well and the ground source heat pump system in a combined mode, and the operation cost is reduced;
(4) When the cold well or the hot well cannot meet the cold load or the heat load required by a building and a ground source heat pump system needs to be started, the heat transfer of the buried pipe is strengthened by increasing the pumping and filling water flow, and effective seepage is formed between the hot well and the cold well so as to improve the heat exchange performance of the buried pipe between wells and improve the operation efficiency of the system;
(5) The system can realize the synergistic effect of system energy supply and energy storage, has high flexibility, and can meet different cold and heat load balance requirements of a refrigeration-based system in various regulation and control modes;
(6) The system can be applied to not only the initial design but also the energy-saving modification of the existing system; the pumping and filling butt wells are additionally arranged on the two sides of the existing buried pipe ground source heat pump system, so that heat accumulation around the buried pipe of the existing system is relieved, and the system performance is improved.
Drawings
Fig. 1 is a schematic structural diagram of a cold and heat source system for coupling a ground source heat pump with an aquifer energy storage according to the present application;
in the figure: the system comprises a 1-cold well, a 2-hot well, a 3-buried pipe, a 4-cold well side circulating pump, a 5-cold well side circulating pump bypass valve, a 6-plate heat exchanger, a 7-plate heat exchanger side bypass valve, an 8-hot well side circulating pump, a 9-hot well side circulating pump bypass valve, a 10-heat exchanger to heat pump unit valve, a 11-heat exchanger to tail end coil pipe valve, a 12-buried pipe side circulating pump, a 13-buried pipe side valve, a 14-heat pump unit and a 15-tail end coil pipe.
Detailed Description
The technical solution of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict, and the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments.
As shown in fig. 1, the cold and heat source system of ground source heat pump and aquifer energy storage coupling described in the present application includes a cold well 1, a hot well 2, an underground pipe 3, a cold well side circulation pump 4, a cold well side circulation pump bypass valve 5, a plate heat exchanger 6, a plate heat exchanger side bypass valve 7, a hot well side circulation pump 8, a hot well side circulation pump bypass valve 9, a heat exchanger to heat pump unit valve 10, a heat exchanger to end coil valve 11, an underground pipe side circulation pump 12, an underground pipe side valve 13, a heat pump unit 14 and an end coil 15.
The cold well side circulating pump 4 is connected with the cold well side circulating pump bypass valve 5 in parallel; the plate heat exchanger 6 is connected with a plate heat exchanger side bypass valve 7 in parallel; the hot well side circulation pump 8 is connected in parallel with a hot well side circulation pump bypass valve 9.
The cold well 1 is connected with a tail end coil 15 through a cold well side circulating pump 4, a plate type heat exchanger 6, a heat exchanger-to-heat pump unit valve 10 and a heat pump unit 14 in sequence; or is connected with the end coil 15 through the cold well side circulating pump 4, the heat exchanger to the end coil valve 11 in sequence.
The hot well 2 is connected with a tail end coil 15 through a hot well side circulating pump 8, a plate type heat exchanger 6, a heat exchanger-to-heat pump unit valve 10 and a heat pump unit 14 in sequence.
The buried pipe 3 is connected with a tail end coil 15 sequentially through a buried pipe side circulating pump 12, a buried pipe side valve 13 and a heat pump unit 14.
In the summer cooling period, cold water pumped from the cold well 1 by the cold well side circulating pump 4 exchanges heat with the tail end coil 15 through the plate heat exchanger 6, and obtained high-temperature cooling water releases heat into soil through the hot well 2, so that energy storage of the hot well 2 is realized. The low-temperature cooling water returns to the cold well 1 through seepage of the rock-soil layer for the next round of circulation.
In the winter heat supply period, cold water pumped from the hot well 2 by the hot well side circulating pump 8 exchanges heat with the heat pump unit 14 through the plate heat exchanger 6, and the obtained low-temperature chilled water releases cold energy into soil through the cold well 1, so that the energy storage of the cold well 1 is realized. The high-temperature chilled water returns to the hot well 2 through the seepage of the rock-soil layer for the next round of circulation.
When the cold/heat quantity stored in the cold/heat well can not meet the cold/heat load required by the building, the ground source heat pump circulating system needs to be started to assist in providing the cold/heat quantity.
Under the cold supply working condition and when the cold load of the cold well 1 completely meets the required cold quantity, the cold well side circulating pump 4, the heat exchanger to tail end coil pipe valve 11 and the hot well side circulating pump bypass valve 9 are opened, and the cold well side circulating pump bypass valve 5, the plate type heat exchanger side bypass valve 7, the hot well side circulating pump 8, the underground pipe side circulating pump 12, the underground pipe side valve 13 and the heat exchanger to heat pump unit valve 10 are closed. The cold energy of the cold well 1 sequentially passes through the cold well side circulating pump 4, the plate heat exchanger 6 and the heat exchanger to the tail end coil pipe valve 11 to be supplied to the tail end coil pipe 15; meanwhile, cold water in the cold well 1 is pumped to the hot well 2 through the cold well side circulating pump 4, the plate type heat exchanger 6 and the hot well side circulating pump bypass valve 9, and heat exchange is carried out between the cold water and the plate type heat exchanger 6. In this case, the cold quantity required by the cold load of the building is provided by the cold well 1.
Under the cold supply working condition, when the cold load of the cold well does not meet the required cold quantity and the cold quantity is sufficient, the cold well side circulating pump 4, the hot well side circulating pump bypass valve 9, the underground pipe side circulating pump 12, the underground pipe side valve 13 and the heat exchanger-to-heat pump unit valve 10 are opened, and the cold well side circulating pump bypass valve 5, the plate type heat exchanger side bypass valve 7, the hot well side circulating pump 8 and the heat exchanger-to-tail end coil pipe valve 11 are closed. Cold energy of the cold well 1 is supplied to a tail end coil 15 through a cold well side circulating pump 4, a plate type heat exchanger 6, a heat exchanger to a heat pump unit valve 10 and a heat pump unit 14 in sequence; the underground pipe 3 sequentially passes through an underground pipe side circulating pump 12, an underground pipe side valve 13 and a heat pump unit 14 to supply cold energy to a tail end coil pipe 15. Meanwhile, cold water in the cold well 1 is pumped to the hot well 2 through the cold well side circulating pump 4, the plate type heat exchanger 6 and the hot well side circulating pump bypass valve 9, and heat exchange is carried out between the cold water and the plate type heat exchanger 6. In this case, the cold quantity required by the building cold load is mainly the cold well 1, and the buried pipe 3 is not used for providing cold quantity in an auxiliary way.
Under the cold supply working condition, when the cold load of the cold well does not meet the required cold quantity and the cold quantity is exhausted, the cold well side circulating pump 4, the hot well side circulating pump bypass valve 9, the heat exchanger to heat pump unit valve 10 and the heat exchanger to tail end coil valve 11 are closed, and the cold well side circulating pump bypass valve 5, the plate type heat exchanger side bypass valve 7, the hot well side circulating pump 8, the underground pipe side circulating pump 12 and the underground pipe side valve 13 are opened. The underground pipe 3 sequentially passes through an underground pipe side circulating pump 12, an underground pipe side valve 13 and a heat pump unit 14 to supply cold energy to a tail end coil 15. The cold well 1 and the hot well 2 form seepage through a cold well side circulating pump bypass valve 5, a plate heat exchanger side bypass valve 7 and a hot well side circulating pump 8. In this case the cooling capacity required by the building cooling load is provided by the buried pipe 3.
Under the heat supply working condition and when the building heat load demand is small, the cold well side circulating pump 4, the plate type heat exchanger side bypass valve 7, the hot well side circulating pump bypass valve 9, the heat exchanger to tail end coil pipe valve 11, the underground pipe side circulating pump 12 and the underground pipe side valve 13 are closed, and the cold well side circulating pump bypass valve 5, the hot well side circulating pump 8 and the heat exchanger to heat pump unit valve 10 are opened. The heat of the hot well 2 is supplied to a tail end coil 15 through a hot well side circulating pump 8, a plate type heat exchanger 6, a heat exchanger-to-heat pump unit valve 10 and a heat pump unit 14 in sequence; meanwhile, hot water in the hot well 2 is pumped to the cold well 1 through the hot well side circulating pump 8, the plate type heat exchanger 6 and the side circulating pump bypass valve 5, and heat exchange is carried out between the hot water and the plate type heat exchanger 6. The heat required for the building thermal load is in this case provided by the thermal well 2.
Under the heat supply working condition and when the building heat load demand is large, the cold well side circulating pump 4, the heat exchanger to tail end coil pipe valve 11, the hot well side circulating pump bypass valve 9 and the plate heat exchanger side bypass valve 7 are closed, and the cold well side circulating pump bypass valve 5, the hot well side circulating pump 8, the heat exchanger to heat pump unit valve 10, the underground pipe side circulating pump 12 and the underground pipe side valve 13 are opened. The heat of the hot well 2 is supplied to a tail end coil 15 through a hot well side circulating pump 8, a plate type heat exchanger 6, a heat exchanger-to-heat pump unit valve 10 and a heat pump unit 14 in sequence; the underground pipe 3 is sequentially supplied with heat to the tail end coil 15 through an underground pipe side circulating pump 12, an underground pipe side valve 13 and a heat pump unit 14. Meanwhile, hot water in the hot well 2 is pumped to the cold well 1 through the hot well side circulating pump 8, the plate type heat exchanger 6 and the cold well side circulating pump bypass valve 5 to exchange heat with the plate type heat exchanger 6. In this case, the heat required by the building thermal load is provided by the combination of the thermal well 2 and the ground pipe 3.
As a specific embodiment, in the project planning and design, the type selection and the quantity of the buried pipes 3 are mainly designed according to the heat quantity required by the heat load, and the type selection and the quantity of the cold wells 1 and the hot wells 2 are designed according to the difference between the cold quantity required by the cold load of the building and the cold quantity required by the cold load provided by the buried pipes under the design condition. In the cold supply working condition, firstly, cold energy is provided by a cold well 1 serving as a pumping well, and when the required cold energy cannot be met, the surplus is provided by a buried pipe 3; if the cold well 1 as the pumping well is exhausted of cold quantity, the cold well side circulating pump 4 is closed, the cold well side circulating pump bypass valve 5, the plate type heat exchanger side bypass valve 7 and the heat source side circulating pump 8 are opened, and at the moment, the underground pipe 3 independently supplies cold. In the heating working condition, the heat well 2 serving as a recharging well is preferentially used for heating, and when the required heat cannot be met, the heat well 2 and the buried pipe 3 are used for supplying heat in a combined mode.
As a specific embodiment, when the cold and heat source system operates for the first time, a summer combined refrigeration operation mode is operated firstly, and when the cold quantity of a cold well is exhausted, a large-flow heat transfer enhancement working condition and a subsequent combined heat supply operation mode are switched into; the positions of the cold well and the hot well are exchanged in the next cycle period.
The embodiments of the invention disclosed above are intended to be merely illustrative. The examples are not intended to be exhaustive or to limit the invention to the precise embodiments described. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand the invention for and utilize the invention.
Claims (9)
1. A cold and heat source system of a ground source heat pump and an aquifer energy storage coupling is characterized by comprising a cold well (1), a hot well (2), a buried pipe (3), a cold well side circulating pump (4), a cold well side circulating pump bypass valve (5), a plate heat exchanger (6), a plate heat exchanger side bypass valve (7), a hot well side circulating pump (8), a hot well side circulating pump bypass valve (9), a heat exchanger-to-heat pump unit valve (10), a heat exchanger-to-tail end coil pipe valve (11), a buried pipe side circulating pump (12), a buried pipe side valve (13), a heat pump unit (14) and a tail end coil pipe (15);
the cold well side circulating pump (4) is connected with the cold well side circulating pump bypass valve (5) in parallel; the plate heat exchanger (6) is connected with a plate heat exchanger side bypass valve (7) in parallel; the hot well side circulating pump (8) is connected with a hot well side circulating pump bypass valve (9) in parallel;
the cold well (1) is connected with a tail end coil (15) through a cold well side circulating pump (4), a plate type heat exchanger (6), a heat exchanger-to-heat pump unit valve (10) and a heat pump unit (14) in sequence; or is connected with the end coil (15) through a cold well side circulating pump (4) and a heat exchanger to end coil valve (11) in sequence;
the hot well (2) is connected with a tail end coil (15) sequentially through a hot well side circulating pump (8), a plate type heat exchanger (6), a heat exchanger-to-heat pump unit valve (10) and a heat pump unit (14);
the buried pipe (3) is connected with the tail end coil (15) sequentially through a buried pipe side circulating pump (12), a buried pipe side valve (13) and a heat pump unit (14).
2. The control method according to claim 1, characterized in that the type and amount of the buried pipe (3) are designed based on the heat quantity required by the heat load, and the type and amount of the cold well (1) and the hot well (2) are designed based on the difference between the cold quantity required by the cold load of the building and the cold quantity required by the cold load provided by the buried pipe (3) under the design condition.
3. A method for regulating and controlling a cold and heat source system based on the coupling of a ground source heat pump and aquifer energy storage according to any one of claims 1-2, characterized in that, in a cold supply working condition, a cold well (1) serving as a pumping well directly supplies cold required by a cold load to a tail end coil pipe (15) through a plate heat exchanger (6), and when the cold well (1) cannot meet the cold required by the cold load, residual cold is supplied to the tail end coil pipe (15) through a heat pump unit (14) by a buried pipe (3); if the cold well (1) as a pumping well is exhausted of the internal cooling capacity, the internal cooling capacity is supplied to a tail end coil pipe (15) through a heat pump unit (14) by the buried pipe (3) alone;
in the working condition of heat supply, when the heat load demand is smaller, the heat required by the heat load is supplied to the tail end coil pipe (15) through the plate type heat exchanger (6) and the heat pump unit (14) by utilizing the heat well (2) as the recharging well; when the heat load demand is large, the plate heat exchanger (6) and the ground buried pipe (3) jointly supply heat to the tail end coil pipe (15), and residual heat is supplied to the tail end coil pipe (15) by the ground buried pipe (3) through the heat pump unit (14).
4. The regulation and control method according to claim 3, characterized in that under the cold supply working condition and when the cold load of the cold well (1) completely meets the required cold quantity, the cold well side circulating pump (4), the heat exchanger to tail end coil valve (11) and the hot well side circulating pump bypass valve (9) are opened, and the cold well side circulating pump bypass valve (5), the plate type heat exchanger side bypass valve (7), the hot well side circulating pump (8), the buried pipe side circulating pump (12), the buried pipe side valve (13) and the heat exchanger to heat pump unit valve (10) are closed;
the cold energy of the cold well (1) is supplied to the tail end coil pipe (15) through a cold well side circulating pump (4), a plate type heat exchanger (6) and a heat exchanger in sequence to a tail end coil pipe valve (11); meanwhile, cold water in the cold well (1) is pumped to the hot well (2) through the cold well side circulating pump (4), the plate type heat exchanger (6) and the hot well side circulating pump bypass valve (9) to exchange heat with the plate type heat exchanger (6).
5. The regulation and control method according to claim 3, characterized in that under the cold supply condition, when the cold load of the cold well does not meet the required cold quantity and the cold quantity is sufficient, the cold well side circulating pump (4), the hot well side circulating pump bypass valve (9), the underground pipe side circulating pump (12), the underground pipe side valve (13) and the heat exchanger-to-heat pump unit valve (10) are opened, and the cold well side circulating pump bypass valve (5), the plate heat exchanger side bypass valve (7), the hot well side circulating pump (8) and the heat exchanger-to-end coil valve (11) are closed;
cold energy of the cold well (1) is supplied to a tail end coil pipe (15) through a cold well side circulating pump (4), a plate type heat exchanger (6), a heat exchanger-to-heat pump unit valve (10) and a heat pump unit (14) in sequence; the underground pipe (3) is sequentially provided with an underground pipe side circulating pump (12), an underground pipe side valve (13) and a heat pump unit (14) to supply cold energy to a tail end coil pipe (15);
meanwhile, cold water in the cold well (1) is pumped to the hot well (2) through the cold well side circulating pump (4), the plate type heat exchanger (6) and the hot well side circulating pump bypass valve (9) to exchange heat with the plate type heat exchanger (6).
6. The regulation and control method according to claim 3, characterized in that under the cold supply condition, when the cold load of the cold well does not meet the required cold quantity and the cold quantity is exhausted, the cold well side circulating pump (4), the hot well side circulating pump bypass valve (9), the heat exchanger-to-heat pump unit valve (10) and the heat exchanger-to-end coil valve (11) are closed, and the cold well side circulating pump bypass valve (5), the plate heat exchanger side bypass valve (7), the hot well side circulating pump (8), the underground pipe side circulating pump (12) and the underground pipe side valve (13) are opened;
the underground pipe (3) is sequentially provided with an underground pipe side circulating pump (12), an underground pipe side valve (13) and a heat pump unit (14) to supply cold energy to a tail end coil pipe (15);
and the cold well (1) and the hot well (2) form seepage flow through a cold well side circulating pump bypass valve (5), a plate type heat exchanger side bypass valve (7) and a hot well side circulating pump (8).
7. The control method according to claim 3, characterized in that in a heating condition and when the building heat load demand is low, the cold well side circulating pump (4), the plate heat exchanger side bypass valve (7), the hot well side circulating pump bypass valve (9), the heat exchanger to end coil valve (11), the underground pipe side circulating pump (12) and the underground pipe side valve (13) are closed, and the cold well side circulating pump bypass valve (5), the hot well side circulating pump (8) and the heat exchanger to heat pump unit valve (10) are opened;
the heat of the heat well (2) is sequentially supplied to a tail end coil (15) through a heat well side circulating pump (8), a plate type heat exchanger (6), a heat exchanger-to-heat pump unit valve (10) and a heat pump unit (14); meanwhile, hot water in the hot well (2) is pumped to the cold well (1) through the hot well side circulating pump (8), the plate type heat exchanger (6) and the cold well side circulating pump bypass valve (5) to exchange heat with the plate type heat exchanger (6).
8. The control method according to claim 3, characterized in that under the heating condition and when the building heat load demand is large, the cold well side circulating pump (4), the heat exchanger to tail end coil valve (11), the hot well side circulating pump bypass valve (9) and the plate type heat exchanger side bypass valve (7) are closed, and the cold well side circulating pump bypass valve (5), the hot well side circulating pump (8), the heat exchanger to heat pump unit valve (10), the underground pipe side circulating pump (12) and the underground pipe side valve (13) are opened;
the heat of the heat well (2) is sequentially supplied to a tail end coil (15) through a heat well side circulating pump (8), a plate type heat exchanger (6), a heat exchanger-to-heat pump unit valve (10) and a heat pump unit (14); the buried pipe (3) is sequentially provided with a buried pipe side circulating pump (12), a buried pipe side valve (13) and a heat pump unit (14) to supply heat to a tail end coil (15);
meanwhile, hot water in the hot well (2) is pumped to the cold well (1) through the hot well side circulating pump (8), the plate type heat exchanger (6) and the cold well side circulating pump bypass valve (5) to exchange heat with the plate type heat exchanger (6).
9. A control method according to claim 3, wherein the cold and heat source system operates for the first time, firstly operates a summer combined refrigeration operation mode, and switches to a high-flow heat transfer enhancement working condition and a subsequent combined heating operation mode when the cold quantity of the cold well is exhausted; the positions of the cold well and the hot well are exchanged in the next cycle period.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211180604.XA CN115638567A (en) | 2022-09-27 | 2022-09-27 | Cold and heat source system with ground source heat pump and aquifer energy storage coupled and regulation and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211180604.XA CN115638567A (en) | 2022-09-27 | 2022-09-27 | Cold and heat source system with ground source heat pump and aquifer energy storage coupled and regulation and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115638567A true CN115638567A (en) | 2023-01-24 |
Family
ID=84941284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211180604.XA Pending CN115638567A (en) | 2022-09-27 | 2022-09-27 | Cold and heat source system with ground source heat pump and aquifer energy storage coupled and regulation and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115638567A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116576705A (en) * | 2023-05-12 | 2023-08-11 | 北京盈创力和电子科技有限公司 | Rock-soil energy storage intelligent sensing and compensating system, method, server and storage medium |
-
2022
- 2022-09-27 CN CN202211180604.XA patent/CN115638567A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116576705A (en) * | 2023-05-12 | 2023-08-11 | 北京盈创力和电子科技有限公司 | Rock-soil energy storage intelligent sensing and compensating system, method, server and storage medium |
| CN116576705B (en) * | 2023-05-12 | 2023-10-13 | 北京盈创力和电子科技有限公司 | Rock-soil energy storage intelligent sensing and compensating system, method, server and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102226541B (en) | Solar and GSHP (ground source heat pump) combined energy supply system for buildings | |
| CN104344603B (en) | Utilize buried pipe ground-source heat pump system and the method for paddy electricity auxiliary heat supplying/cooling | |
| CN201028893Y (en) | Ground source heat pump air conditioning system | |
| CN103900287A (en) | Heat exchange system in combined operation of solar energy and geothermal energy | |
| CN106931674A (en) | A kind of solar energy combines the double heat source heat pump and across season energy-storage system of energy supply with soil source | |
| CN106369872B (en) | Solar energy-ground source heat pump coupling energy supply system and operation method thereof | |
| CN115638567A (en) | Cold and heat source system with ground source heat pump and aquifer energy storage coupled and regulation and control method thereof | |
| CN105135676A (en) | Cascade heat accumulating type air source heat pump water heater | |
| CN205919556U (en) | Solar energy earth source heat pump coupling energy supply system | |
| CN114294847A (en) | Shallow buried pipe and middle-deep buried pipe coupled cold and heat source system and temperature control method thereof | |
| KR100618292B1 (en) | Triple purpose integrated power, heat and cold cogeneration system with absortion cooler from natural gas | |
| CN104482691B (en) | Ground-source heat pump system obtaining heat from environment and operation method thereof | |
| CN110260396A (en) | Solar energy and soil source heat pump Coupling Thermal water cooling heating system based on layering heat management | |
| CN101776352A (en) | Ground source heat pump system applying system to recover heat and control method thereof | |
| CN207035281U (en) | A kind of solar energy and the compound storing energy and supplying hot system of air source heat pump | |
| CN202613556U (en) | Ground source heat pump heating system utilizing heating terminals for free cooling | |
| CN207865525U (en) | A kind of pre-heated air energy heating system | |
| KR200369438Y1 (en) | Triple purpose integrated power, heat and cold cogeneration system with absortion cooler from natural gas | |
| CN211176992U (en) | Air energy ground source heat pump concurrent heating system | |
| CN115717726A (en) | Energy pile-building photovoltaic photo-thermal coupling system and control method thereof | |
| CN212618577U (en) | Gas trigeminy supplies with aquifer energy storage system coupling energy supply system | |
| CN205717464U (en) | A kind of electric boiler system and heat pump energy supply coupled system | |
| CN104613674A (en) | Soil source fuel gas heat pump supplying heat, cool and hot water system | |
| CN201662276U (en) | Solar absorption energy-storage refrigerating system | |
| CN107781096A (en) | Water wheels, generating, heat pump all-in-one |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |