Geothermal energy storage heating system

Abstract

The utility model relates to a terrestrial heat energy storage heating system which comprises an absorption type unit, a main machine part and a heat source part, the main machine part at least comprises an evaporator and a compressor, the compressor, the absorption type unit and the evaporator are sequentially connected through pipelines to form a refrigerant circulation pipeline, and a throttling component is arranged between the outlet end of the absorption type unit and the evaporator. The absorption type unit is used for achieving heat exchange between refrigerants and heating water so as to supply heat to users, the heat source part comprises a waste heat source and a geothermal source, and during heating, the evaporator is connected with the waste heat source and / or the geothermal source through a pipeline. By adjusting a valve of a system pipeline, a waste heat source is used for supplementing heat for a geothermal source, so that excessive heat collection is avoided, and renewable geothermal energy is realized; when the terrestrial heat source is not sufficient, only the waste heat source is utilized by connecting the waste heat source in series or not exploiting the terrestrial heat source, so that the heat load requirement of a user is met; compared with a traditional geothermal heat pump system, the main machine part can utilize a heat source below 0 DEG C.

Description

TECHNICAL FIELD

[0001] The utility model relates to a heating technical field, concretely relates to a geothermal energy storage heating system. BACKGROUND

[0002] The traditional geothermal heat pump system, the host part generally adopts the absorption heat pump or centrifugal heat pump, and the heat collection usually adopts the technology similar to the ground source heat pump, and the technology mainly relies on the heat conduction of the geothermal heat to transfer the heat of the surrounding geothermal heat to the shaft, and the geothermal heat is collected from the ground in winter, and due to the low thermal conductivity of the geothermal heat, when the geothermal temperature is too low, it cannot be utilized, especially only the waste heat above 0 DEG C can be utilized, and the geothermal source with lower temperature cannot be utilized. CONTENT

[0003] The utility model provides a geothermal energy storage heating system for the prior art problem.

[0004] The utility model discloses a geothermal energy storage heating system, including absorption unit, host part and heat source part, the host part at least includes evaporimeter and compressor, the compressor, absorption unit and evaporimeter are connected gradually and form circulation pipeline through pipeline, and the outlet end of absorption unit is equipped with throttling component with evaporimeter, and absorption unit is used to realize the heat exchange of refrigerant and heating water to heat the user, and the heat source part includes waste heat source and geothermal source, when heating, the evaporimeter is connected with waste heat source and / or geothermal source through pipeline.

[0005] On the basis of the above technical scheme, the utility model still can make following improvement:

[0006] Preferably, when not heating, the pipeline between the heat source part and the evaporator is closed, and the waste heat source is connected in series with the geothermal source through the fourth circulation pipeline.

[0007] Preferably, the geothermal source is a buried pipe geothermal well, an open geothermal well or a river or lake.

[0008] Preferably, the waste heat source is data center waste heat, industrial waste heat or solar energy.

[0009] Preferably, the host part further includes an economizer, which is located between the throttling component and the evaporator, and the economizer is connected with the air supplementing port of the compressor through a pipeline.

[0010] The beneficial effects of the present invention are as follows: by adjusting the valves of the system pipelines, the waste heat source is used to supplement the geothermal source, thereby avoiding excessive heat extraction and realizing the renewability of geothermal energy; when the geothermal source is insufficient, the waste heat source is connected in series or only the waste heat source is used without extracting the geothermal source to meet the user's heat load demand; because the main unit of the present invention adopts the technology of coupling the absorption unit with the centrifugal compressor unit, the utilization rate of the heat source is improved as a whole, and the requirements for the quality of the heat source are reduced, so geothermal resources below 0° can be utilized. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of Example 1 of the present utility model;

[0012] Figure 2 This is a schematic diagram of Example 2 of the present utility model;

[0013] Figure 3 This is a schematic diagram of Example 3 of the present utility model.

[0014] The accompanying drawings are marked as follows: 1. Waste heat source; 2. Geothermal source; 3. Evaporator; 4. Compressor; 5. Economizer; 6. Throttling component; 7. Absorption unit; 8. User; 9. Circulation pump 1; 10. Valve 1; 11. Valve 2; 12. Valve 3; 13. Valve 4; 14. Valve 5; 15. Valve 6; 16. Valve 7; 17. Circulation pump 2; 201. Valve 8; 202. Valve 9. DETAILED DESCRIPTION

[0015] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0016] Example 1

[0017] like Figure 1 As shown, the utility model discloses a geothermal energy storage heating system, including an absorption unit 7, a main unit part and a heat source part. The main unit part includes at least an evaporator 3 and a compressor 4. The compressor 4 is a centrifugal compressor. The compressor 4, the absorption unit 7 and the evaporator 3 are connected in sequence through pipelines to form a refrigerant circulation pipeline. A throttling component 6 is provided between the outlet end of the absorption unit 7 and the evaporator 3. The throttling component 6 is an electric throttle valve. The absorption unit 7 is used to realize heat exchange between the refrigerant and the heating water to provide heating to the user 8. A circulating pump 2 17 is provided on the pipeline between the absorption unit 7 and the user 8 to ensure the heating effect. The specific structure of the absorption unit 7 is not limited in this article, and reference can be made to the current technology. The heat source part includes a waste heat source 1 and a geothermal source 2. When heating, the evaporator 3 is connected to the waste heat source 1 and / or the geothermal source 2 through a pipeline. In this embodiment, the waste heat source 1 is the waste heat of the data center.

[0018] The host part further comprises an economizer 5, which is located between the throttling component 6 and the evaporator 3 and is connected with the air supplementing port of the compressor 4 through a pipeline. The economizer 5 can optimize the circulation process of the refrigerant and improve the reliability and stability of the entire unit.

[0019] When the geothermal source 2 is not exploited and only the waste heat source 1 is used to supply heat to the host part, the evaporator 3 is connected with the waste heat source 1 through a first circulation pipeline, which is provided with a valve seven 16, a valve one 10, a circulation pump one 9, a valve four 13, a valve five 14 and a valve six 15. In use, the above-mentioned valves on the first circulation pipeline are opened and the remaining valves are closed. The circulation pump one 9 can ensure the effect of fluid circulation and flow, thereby ensuring the heat exchange effect.

[0020] When the exploitation of the geothermal source 2 is limited, the waste heat source 1 and the geothermal source 2 are connected in series to enhance the heat exchange effect. Specifically, the evaporator 3 is connected with the waste heat source 1 and the geothermal source 2 through a second circulation pipeline, which is provided with a valve seven 16, a valve nine 202, a valve eight 201, a circulation pump one 9, a valve four 13, a valve five 14 and a valve six 15. In use, the above-mentioned valves on the second circulation pipeline are opened and the remaining valves are closed.

[0021] When the geothermal source 2 is abundant, only the geothermal source 2 is used to supply heat to the host part. Specifically, the evaporator 3 is connected with the geothermal source 2 through a third circulation pipeline, which is provided with a valve seven 16, a valve nine 202, a valve eight 201, a circulation pump one 9, a valve two 11 and a valve six 15. In use, the above-mentioned valves on the third circulation pipeline are opened and the remaining valves are closed, thereby realizing normal heat supply to the host part.

[0022] Further, when not for heating, the pipeline between the heat source part and the evaporator 3 is closed, i.e. the valve seven 16 and the valve six 15 are closed, the heat supply to the host part is stopped, the waste heat source 1 is connected with the geothermal source 2 in series through a fourth circulation pipeline, which is provided with a valve three 12, a valve nine 202, a valve eight 201, a circulation pump one 9 and a valve four 13. In use, the above-mentioned valves on the fourth circulation pipeline are opened and the remaining valves are closed. By connecting the waste heat source 1 and the geothermal source 2 in series, the function of heating the geothermal source 2 is realized.

[0023] Further, the geothermal source 2 is a buried pipe type geothermal well, an open type geothermal well or a river or lake.

[0024] The buried pipe type geothermal well is a high-efficiency geothermal energy utilization method, which is particularly suitable for densely populated and high energy demand areas such as cities and industrial parks. By setting a buried pipe in the shallow soil, heat energy exchange is carried out by utilizing the temperature gradient in the soil, thereby realizing the collection and utilization of geothermal energy.

[0025] Open geothermal well is a certain depth and diameter of borehole in the underground rock layer by drilling technology, to directly use the underground thermal fluid (such as hot water, steam) for heating.

[0026] When using rivers and lakes as heat sources, it is usually necessary to set up heat exchangers or heat pump systems in the water body to extract the heat energy in the water body through heat exchange for building heating or refrigeration. According to the specific use, the corresponding geothermal source 2 is selected to improve the flexibility of use.

[0027] Embodiment 2

[0028] As shown in Figure 2 , unlike embodiment 1, the waste heat source 1 is solar energy. Solar energy is a clean and renewable energy. Using solar energy to supplement the geothermal source 2 can significantly improve the energy utilization efficiency, provide stable heat source supplement for the geothermal source 2, and realize direct heating to the main part. It is efficient, energy-saving, economical and environmentally friendly.

[0029] Embodiment 3

[0030] As shown in Figure 3 , unlike embodiment 1, the waste heat source 1 is industrial waste heat. Industrial waste heat refers to the waste heat generated in the industrial production process which is not fully utilized. If these waste heat is directly discharged into the environment, not only will it cause energy waste, but also may cause thermal pollution to the environment. By using industrial waste heat to supplement the geothermal source 2, the waste heat is converted into usable heat energy, realizing energy reuse, significantly improving energy utilization efficiency and reducing energy waste.

[0031] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A geothermal stored energy heating system, characterized in that, The application relates to a heat supply system, which comprises an absorption unit (7), a main unit and a heat source unit, the main unit at least comprises an evaporator (3) and a compressor (4), the compressor (4), the absorption unit (7) and the evaporator (3) are sequentially connected through pipelines to form a refrigerant circulation pipeline, a throttling component (6) is arranged between an outlet end of the absorption unit (7) and the evaporator (3), the absorption unit (7) is used for realizing heat exchange between refrigerant and heating water to supply heat to a user (8), the heat source unit comprises a waste heat source (1) and a geothermal source (2), when heating, the evaporator (3) is connected with the waste heat source (1) and / or the geothermal source (2) through pipelines.

2. The geothermal stored energy heating system of claim 1, wherein, When not heating, the pipeline between the heat source unit and the evaporator (3) is closed, and the waste heat source (1) and the geothermal source (2) are connected in series.

3. The geothermal stored energy heating system of claim 1, wherein, The geothermal source (2) is a buried pipe type geothermal well, an open type geothermal well or a river and lake.

4. The geothermal stored energy heating system of claim 1 or 3, wherein, The waste heat source (1) is data center waste heat, industrial waste heat or solar energy.

5. The geothermal stored energy heating system of claim 1, wherein, The main unit further comprises an economizer (5), the economizer (5) is located between the throttling component (6) and the evaporator (3), and the economizer (5) is connected with a gas supplementing opening of the compressor (4) through a pipeline.

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