CN212538007U - Ground source heat pump and air source heat pump heating freezer concurrent heating system - Google Patents
Ground source heat pump and air source heat pump heating freezer concurrent heating system Download PDFInfo
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- CN212538007U CN212538007U CN202021056843.0U CN202021056843U CN212538007U CN 212538007 U CN212538007 U CN 212538007U CN 202021056843 U CN202021056843 U CN 202021056843U CN 212538007 U CN212538007 U CN 212538007U
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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- Y02B10/40—Geothermal heat-pumps
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Abstract
The utility model relates to a ground source heat pump and air source heat pump heating cold storage concurrent heating system, which comprises a ground source heat pump unit, an air source heat pump unit and a cold storage machine unit, the system comprises an underground pipe set and a heat exchanger, wherein a water inlet and a water outlet of a secondary side of a ground source heat pump unit are connected with a user side heating pipe network in series, a water inlet and a water outlet of an air source heat pump unit are connected with the user side heating pipe network in series, a liquid outlet of the underground pipe set is sequentially communicated with a liquid inlet of the secondary side of the heat exchanger, a liquid outlet of a primary side of the ground source heat pump unit and a water inlet of a primary side of the ground source heat pump unit through pipelines, a medium inlet and a medium outlet of the primary side of the heat exchanger are respectively connected with a fluid inlet and a fluid outlet of a refrigeration house unit in series through pipelines, and the fluid inlet and the fluid outlet of the refrigeration house unit are. The advantages are that: reasonable design, high efficiency and energy conservation.
Description
Technical Field
The utility model relates to a ground source heat pump technique, in particular to ground source heat pump and air source heat pump heating freezer concurrent heating system.
Background
Energy conservation becomes the focus of wide attention of all countries in the world, China is a big country with a large population and less energy resources per capita, and how to develop sustainably is a task with great significance. Therefore, studies on effective utilization of energy, development of novel renewable energy, recovery of surplus energy, and the like have become a popular issue. The heat source of the central heating system at the present stage is mostly a coal-fired gas-fired boiler, and a large amount of SO is generated after the heat is released by the combustion of coal2、SO3、NOXAsh and moisture, and the flue gas is discharged into the atmosphere, so that the ecological environment is damaged difficultly to recover; natural gas is one kind of clean energy, although it is relative to SO that coal fired boiler gas boiler discharged2、SO3、NOXMuch less, but not completely no SO is produced2、SO3、NOXAnd the like, and damage to the ecological environment still exists. The natural gas belongs to non-renewable energy sources like coal and fossil energy sources, a large amount of carbon dioxide is inevitably discharged after combustion, the carbon dioxide is regarded as greenhouse gas with the most remarkable effect, and the large amount of carbon dioxide is discharged in recent decades, so that the greenhouse gas is excessively gathered in the atmosphere, and the greenhouse effect is intensified. Therefore, the coal-fired gas-fired boiler is difficult to conform to the green sustainable development principle at the present stage.
Both the ground source heat pump technology and the air source heat pump technology are green and environment-friendly products utilizing renewable energy sources. The ground source heat pump technology is a high-efficiency energy-saving system which can supply heat and refrigerate by utilizing shallow geothermal energy, also called geothermal energy, including energy of underground water, soil or surface water and the like. The ground source heat pump can be divided into ground source heat pump and water source heat pump according to the heat source difference, the utility model discloses a ground source heat pump be the ground source heat pump. The ground source heat pump realizes the transfer from low-grade heat energy to high-grade heat energy by inputting a small amount of high-grade energy such as electric energy. Generally, a ground source heat pump consumes 1kWh of electricity, and a user can obtain heat or cold more than 4kWh, so that the energy is comprehensively saved by more than 30% compared with the traditional central air conditioner, and the ground source heat pump is called an energy-saving air conditioning system. However, the ground source heat pump technology has high investment in the initial application stage, the ground heat exchanger occupies a large land area during construction, is more suitable for areas which need both heat supply and refrigeration, and is not suitable for single heat supply or single cold supply conditions. If the ground source heat pump is applied to single heat supply in the northern area, the temperature of stratum rock and soil mass is easy to reduce year by year, so that cold accumulation is formed, the heating efficiency of the heat pump is influenced by a light person, the operation cost of the system is increased, the heat pump cannot normally operate due to a heavy person, and the heat supply effect is influenced, so that a heat supplementing system must be equipped for ensuring the heat supply effect.
The cold storage can generate waste heat during refrigeration, the waste heat is directly discharged into the atmosphere through a cooling tower or an air unit to cause environmental heat effect or heat pollution under the general condition, and the city of people has increasingly serious heat island effect at the present stage, so that the cold storage is not different from the oil pouring on fire. The utility model can collect the waste heat through the water-cooled condenser and the heat exchange tube, so that the waste heat can provide a heat source for the ground source heat pump in the heating season; the shallow geothermal energy extracted when the ground source heat pump supplies heat can be supplemented in non-heating seasons to form complementation with the ground source heat pump, so that cold accumulation of stratum rock and soil mass in the running process of the ground source heat pump is avoided; meanwhile, the redundant heat energy is stored in the soil, and the heat energy is stored for the next heating season.
The air source heat pump takes the atmosphere as a cold and heat source, and extracts heat from the atmosphere for supplying heat. The air source heat pump can be designed in a modularized way; the energy can be combined freely according to the load size, so that the energy can be adjusted conveniently; convenient transportation, installation and maintenance and low initial investment. However, the heating energy efficiency of the air source heat pump system is greatly influenced by the atmospheric temperature, and the operation cost is high compared with that of a ground source heat pump, so that the system is used as a heat supply supplementary energy source during design and configuration, and the heat supply requirements of different building areas are met.
Therefore, a new concept of high efficiency and environmental protection needs to be designed. The advantages of various modes are integrated, the defects of each mode are overcome, and the novel comprehensive heating system is provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a ground source heat pump and air source heat pump heating freezer concurrent heating system is provided, the effectual defect of overcoming prior art.
The utility model provides an above-mentioned technical problem's technical scheme as follows:
a ground source heat pump and air source heat pump heating cold storage heat supplementing system comprises a ground source heat pump unit, an air source heat pump unit, a cold storage unit, a buried pipe set and a heat exchanger, wherein a water inlet and a water outlet of a secondary side of the ground source heat pump unit are connected with a user side heating pipe network in series, first control valves are respectively arranged at the water inlet and the water outlet of the group, a water inlet and a water outlet of the air source heat pump unit are connected with the user side heating pipe network in series, second control valves are respectively arranged at the water inlet and the water outlet of the group, a liquid outlet of the buried pipe set is sequentially communicated with a liquid inlet and a liquid outlet of the secondary side of the heat exchanger and a water inlet of a primary side of the ground source heat pump unit through pipelines, a water outlet of the primary side of the ground source heat pump unit is communicated with a liquid inlet of the buried pipe set through a pipeline, and third control valves are respectively arranged, the medium inlet and the medium outlet of the primary side of the heat exchanger are respectively connected with the fluid inlet and the fluid outlet of the refrigeration house unit in series through pipelines, the pipelines connected in series are respectively provided with a fourth control valve, the fluid inlet and the fluid outlet of the refrigeration house unit are also respectively communicated with the liquid outlet and the liquid inlet of the underground pipe group through pipelines, and the pipelines at two positions are respectively provided with a fifth control valve.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
Further, the heat exchanger is a plate heat exchanger.
Furthermore, a user side heating water pump group is communicated with the user side heating pipe network, a refrigeration house unit circulating water pump is communicated with a medium inlet or a medium outlet on the primary side of the heat exchanger, and a buried pipe side circulating water pump is communicated with a liquid inlet or a liquid outlet of the buried pipe group.
The first control valve, the second control valve, the third control valve, the fourth control valve and the fifth control valve are all electric control valves, and the control management system is respectively connected with the first control valve, the second control valve, the third control valve, the fourth control valve, the fifth control valve and the circulating pump.
Further, a temperature sensor for detecting the temperature of water in the pipeline is arranged on the user side heating pipe network, and the temperature sensor is connected with the control management system.
The utility model has the advantages that: the whole structure is reasonable in design, waste heat can be fully recycled, the system is efficient and energy-saving in operation, and the system has great economic value.
Drawings
Fig. 1 is the result of the ground source heat pump and air source heat pump heating cold storage concurrent heating system of the utility model is a schematic diagram.
In the drawings, the components represented by the respective reference numerals are listed below:
1. the system comprises a ground source heat pump unit, a ground storage unit, a buried pipe group, a heat exchanger, a temperature sensor, a control management system, a first control valve, a third control valve, a fourth control valve, a fifth control valve, a second control valve, a user side heating water pump unit, a first control valve, a third control valve, a fourth control valve, a fifth control valve, a second control valve, a user side.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
Example (b): as shown in fig. 1, the geothermal heat pump and air source heat pump heating cold storage heat supplying system of the present embodiment includes a geothermal heat pump unit 1, an air source heat pump unit 2, a cold storage unit 3, a buried pipe set 4 and a heat exchanger 5, wherein a water inlet and a water outlet on a secondary side of the geothermal heat pump unit 1 are connected in series with a user side heating pipe network, a first control valve 11 is respectively disposed at the water inlet and the water outlet, a water inlet and a water outlet of the air source heat pump unit 2 are connected in series with the user side heating pipe network (the water inlet and the water outlet on the secondary side of the geothermal heat pump unit 1 are connected in parallel with the water inlet and the water outlet of the air source heat pump unit 2), a second control valve 21 is respectively disposed at the water inlet and the water outlet, a liquid outlet of the buried pipe set 4 is sequentially communicated with a liquid inlet and a, a water outlet on the primary side of the ground source heat pump unit 1 is communicated with a liquid inlet of the buried pipe group 4 through a pipeline, a third control valve 12 is respectively arranged at a liquid inlet on the secondary side of the heat exchanger 5 and a water outlet on the primary side of the ground source heat pump unit 1, a medium inlet and a medium outlet on the primary side of the heat exchanger 5 are respectively connected with a fluid inlet and a fluid outlet of the refrigeration house unit 3 in series through pipelines, a fourth control valve 13 is respectively arranged on the pipelines connected in series, the fluid inlet and the fluid outlet of the refrigeration house unit 3 are respectively communicated with a liquid outlet and a liquid inlet of the buried pipe group 4 through pipelines, and a fifth control valve 14 is respectively arranged on the two pipelines.
In a preferred embodiment, a user side heating water pump group 61 is provided in communication with the user side heating pipe network, a refrigeration storage unit circulating water pump 62 is provided in communication with a medium inlet or a medium outlet on the primary side of the heat exchanger 5, and an underground pipe side circulating water pump 63 is provided in communication with a liquid inlet or a liquid outlet of the underground pipe group 4.
It should be noted that: the secondary side of the ground source heat pump unit 1 refers to cold circuit circulation, and the primary side refers to hot circuit circulation; the secondary side of the heat exchanger 5 is the hot side, and the primary side is the cold side.
In the embodiment, each link promotes the fluid flow through the adaptive circulating pump group, and the smooth flow of the fluid among all devices in the system is ensured, namely the normal, good and efficient operation of the system is ensured.
The whole system comprises the following four loops:
firstly, a closed heating loop I: a closed loop is formed by the ground source heat pump unit 1, the air source heat pump unit 2, the first control valve 11, the second control valve 21, the user side heating pipe network and the user end. In the loop, the ground source heat pump unit 1 and the air source heat pump unit 2 are operated in parallel, and can form an independent closed heating loop with a user side heating pipe network respectively by controlling the switches of the first control valve 11 and the second control valve 21.
A heat extraction loop II in a non-heating season of the refrigeration house unit: the fifth control valve 14 is opened, the fourth control valve 13 is closed, the third control valve 12 is closed, and a closed loop is formed by the refrigeration house unit 3 and the underground pipe group 4.
Thirdly, a third ground source heat pump heat source loop: and the third control valve 12 is opened, the fifth control valve 14 is closed, and a closed loop is formed by the ground source heat pump unit 1, the heat exchanger 5 and the buried pipe group 4 together.
Fourthly, a fourth heat extraction loop of the refrigeration house unit in the heating season: the fifth control valve 14 is closed, the fourth control valve 13 is opened, and a closed loop is formed by the refrigeration house unit 3 and the heat exchanger 5.
The working principle is as follows: the utility model discloses use the ground source heat pump heat supply to give first place to, air source heat pump heat supply is for assisting, and heating season freezer waste heat is used for the energy storage as the auxiliary heat source of ground source heat pump buried pipe, and the heat extraction of non-heating season freezer unit is mended back to outdoor buried pipe. The three mutually assist and cooperate to run to ensure heat supply and integrated utilization of resources, and the specific working process is as follows:
in the heating season, a user heating loop I, a ground source heat pump heat source loop III and a refrigeration house unit heating season heat extraction loop IV work simultaneously. The ground source heat pump unit 1 is started preferentially, the first control valve 11 of the ground source heat pump unit 1 is opened, and the user side heating water pump unit 61 operates to form a first closed heating loop to provide heating service for users. And monitoring the temperature of the return water at the user side in real time, and when the temperature of the return water at the user side is lower than a set value, indicating that the heating load of the ground source heat pump can not meet the user requirement, at the moment, opening the second control valve 21 of the air source heat pump unit 2, so that the air source heat pump unit 2 and the ground source heat pump unit 1 are connected in parallel to operate and supply heat together, and the heating requirement of the user is met. The air source heat pump unit 2 is in a modular design, can be started singly or in multiple ways, and is started respectively until the return water temperature at the user side reaches a set value, so that the heat supply requirement of a user is met. When the ground source heat pump unit 1 is started, the third ground source heat pump heat source loop needs to be started simultaneously, at the moment, the third control valve 12 is opened, the fourth control valve 13 is opened, the fifth control valve 14 is closed, and the third ground source heat pump heat source closed loop is formed by the ground source heat pump unit 1, the heat exchanger 5, the buried pipe side circulating water pump 63 on the side of the buried pipe group 4 and the buried pipe group 4; the refrigeration house unit 3, the refrigeration house unit circulating water pump 62 of the refrigeration house unit 3 and the heat exchanger 5 form a closed loop IV. The medium water in the loop III is subjected to heat extraction by the ground source heat pump unit 1, then is circulated to the buried pipe and the underground rock-soil body for heat exchange and temperature rise, then flows through the heat exchanger 5 for extracting the residual heat of the refrigeration house unit again, and provides a heat source for the heat supply of the ground source heat pump unit 1 after temperature rise; the circulation of medium water in the whole loop is provided with water flow power by the underground pipe side circulating water pump 63; in the fourth loop, when the refrigeration house unit refrigerates the refrigeration house, the generated waste heat is conveyed to the heat exchanger 4 by medium water under the driving of the refrigeration house unit circulating water pump 62, the heat is converted to the ground source heat pump heat source closed loop three to be used as a supplementary heat source of the ground source heat pump heat source, the cooled intermediate water is conveyed back to the refrigeration house unit 3, and the circulation is repeated in the above way.
And in the non-heating season, the heat extraction loop II of the refrigeration house unit works in the non-heating season. The fifth control valve 14 is opened, the fourth control valve 13 is closed, the third control valve 12 is closed, and the circulation pump 6 on the side of the underground pipe group 4 pushes the medium water in the loop to circulate between the refrigeration house unit 3 and the underground pipe group 4. Waste heat generated by the operation of the refrigeration house unit 3 is discharged into the underground rock-soil body, and heat energy is stored for the next heating season.
In a preferred embodiment, the heat exchanger 5 is a plate heat exchanger.
As a preferred embodiment, the system further comprises a control management system 8, the first control valve 11, the second control valve 21, the third control valve 12, the fourth control valve 13 and the fifth control valve 14 are all electrically controlled valves, and the control management system 8 is connected to the first control valve 11, the second control valve 21, the third control valve 12, the fourth control valve 13, the fifth control valve 14 and the circulation pump 6 respectively.
In the implementation mode, the whole set of device is connected into the management system, so that the unified intelligent management operation is convenient for workers, and the manual investment is reduced.
Specifically, the control management system 8 is a distributed computer control system for monitoring and controlling the ground source heat pump system and the air source heat pump system by using the existing internet of things energy management system. The system is provided with a PLC controller and a remote control terminal, a temperature sensor 5 is arranged on a heating pipeline, and each device is connected to an intelligent control system through a control circuit. The system realizes the combined control of heating of the ground source heat pump system and the air source heat pump system, realizes the accuracy of monitoring data and the timeliness of control, can predict faults so as to maintain and optimize a control strategy in time, reduces the fault rate of the system, realizes the purposes of high efficiency and intelligence of the system and reduces the operating cost, and comprises a computer and an intelligent terminal.
In a preferred embodiment, the user-side heating pipe network is provided with a temperature sensor 7 for detecting the temperature of water in the pipe, and the temperature sensor 7 is connected to the control and management system 8.
In this embodiment, intelligent online monitoring and timely parameter adjustment control are realized by accessing the temperature sensor 7.
The greatest benefits of the whole system are: the waste heat generated when the refrigeration house unit 3 refrigerates can be used as a supplementary heat source of the ground source heat pump buried pipe set 4 in the heating season to improve the energy efficiency of the ground source heat pump unit 1, and heat generated in the operation of the refrigeration house can be compensated and stored in underground soil in the non-heating season to improve the soil temperature, so that the system energy efficiency caused by cold accumulation of the system of the buried pipe set 4 is low or the system fault is avoided. The technical advantages are mainly four points; firstly, the cold accumulation phenomenon caused by long-term heat taking and non-heat supplementing of the underground pipe group 4 under the condition of single heat supply is avoided, and the balance and the continuity of the heat exchange capacity of the shallow layer buried pipe are ensured; secondly, the reserve amount of geothermal energy is increased within the natural recovery capacity of the soil, and the sufficient geothermal energy reserve can improve the working efficiency of the ground source heat pump unit 1 and can provide heat supply service for users more stably; thirdly, the waste heat generated by the refrigeration house is utilized, so that the energy is utilized to the maximum extent, the resource waste is reduced, the refrigeration house unit is ensured to work in a stable and efficient heat dissipation environment, the energy consumption is reduced, and the environment-friendly refrigeration house unit conforms to the environmental protection and resource recycling; fourthly, the air source heat pump can be combined in a modularization mode, and when the area of the outdoor buried pipe group 4 is insufficient, the insufficient heat energy can be supplemented by the air source heat pump. The system is used for combined heating, geothermal energy, waste heat energy and air energy are used for replacing coal and natural gas, and green renewable energy is used for replacing disposable non-renewable energy. The dependence of the society on non-renewable energy sources is reduced, the pollution of the old coal-fired gas-fired boiler to the environment and the waste of resources are reduced, the resource utilization rate is improved, various resources are synthesized, and the efficient operation of the system is ensured. Each link automatically operates according to a set value, and the actual operation is efficient and energy-saving.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (5)
1. The utility model provides a ground source heat pump and air source heat pump heating freezer concurrent heating system which characterized in that: the system comprises a ground source heat pump unit (1), an air source heat pump unit (2), a refrigeration storage unit (3), a buried pipe group (4) and a heat exchanger (5), wherein a water inlet and a water outlet of a secondary side of the ground source heat pump unit (1) are connected with a user side heating pipe network in series, first control valves (11) are respectively arranged at the water inlet and the water outlet of the water source heat pump unit, a water inlet and a water outlet of the air source heat pump unit (2) are connected with the user side heating pipe network in series, second control valves (21) are respectively arranged at the water inlet and the water outlet of the water inlet, a liquid outlet of the buried pipe group (4) is sequentially communicated with a liquid inlet and a liquid outlet of the secondary side of the heat exchanger (5) and a water inlet of a primary side of the ground source heat pump unit (1, and a liquid inlet on the secondary side of the heat exchanger (5) and a water outlet on the primary side of the ground source heat pump unit (1) are respectively provided with a third control valve (12), a medium inlet and a medium outlet on the primary side of the heat exchanger (5) are respectively connected with a fluid inlet and a fluid outlet of the refrigeration house unit (3) in series through pipelines, a fourth control valve (13) is respectively arranged on the pipelines connected in series, the fluid inlet and the fluid outlet of the refrigeration house unit (3) are also respectively communicated with a liquid outlet and a liquid inlet of the underground pipe set (4) through pipelines, and a fifth control valve (14) is respectively arranged on the two pipelines.
2. The ground source heat pump and air source heat pump heating cold storage concurrent heating system of claim 1, characterized by: the heat exchanger (5) is a plate heat exchanger.
3. The ground source heat pump and air source heat pump heating cold storage concurrent heating system of claim 1, characterized by: the utility model discloses a heat exchanger, including the heat exchanger (5), the heat exchanger is equipped with user side heating water pump group (61) in the intercommunication on the user side heating pipe network, the medium entry or the medium exit intercommunication of heat exchanger (5) primary side are equipped with freezer unit circulating water pump (62), bury the inlet or the liquid outlet department intercommunication of nest of tubes (4) and bury tub side circulating water pump (63) with burying.
4. The ground source heat pump and air source heat pump heating cold storage concurrent heating system of claim 3, characterized by: the device is characterized by further comprising a control management system (8), wherein the first control valve (11), the second control valve (21), the third control valve (12), the fourth control valve (13) and the fifth control valve (14) are all electric control valves, and the control management system (8) is respectively connected with the first control valve (11), the second control valve (21), the third control valve (12), the fourth control valve (13), the fifth control valve (14) and the circulating pump (6).
5. The ground source heat pump and air source heat pump heating refrigeration house concurrent heating system of claim 4, characterized in that: and a temperature sensor (7) for detecting the temperature of water in the pipeline is arranged on the user side heating pipe network, and the temperature sensor (7) is connected with the control management system (8).
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| CN202021056843.0U CN212538007U (en) | 2020-06-10 | 2020-06-10 | Ground source heat pump and air source heat pump heating freezer concurrent heating system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115435415A (en) * | 2022-08-17 | 2022-12-06 | 西安中创区综合能源股份有限公司 | Geothermal energy and air energy combined type heat and cold supply system |
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2020
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115435415A (en) * | 2022-08-17 | 2022-12-06 | 西安中创区综合能源股份有限公司 | Geothermal energy and air energy combined type heat and cold supply system |
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Effective date of registration: 20220301 Address after: 300450 Building 1, star enterprise center plant, No. 3, Haitai development road 6, Huayuan Industrial Zone (outside the ring), Binhai high tech Zone, Xiqing District, Tianjin Patentee after: ZHONGNENGHUA GREEN ENERGY TECHNOLOGY Co.,Ltd. Address before: 300121 10th-11th floor, SDIC building, 18 Dafeng Road, jieyuandao street, Hongqiao District, Tianjin Patentee before: China Coal hydrologic Bureau Group Co.,Ltd. |