Multi-stage ground source heat pump system based on green building

Abstract

The invention discloses a multi-stage ground source heat pump system based on a green building. The multi-stage ground source heat pump system comprises a ground heat exchanger, an atomizing pump, a ground source heat pump, an air compression pump, a solar auxiliary heating system and a control valve. According to the system, the ground heat exchanger is connected with the atomizing pump, and the atomizing pump is connected with the ground source heat pump and the air source heat pump in series, so that efficient heat energy conversion is realized. In addition, the solar auxiliary heating system in the system can be connected with the atomizing pump in parallel, so that energy utilization is more sufficient. Control valves such as a reversing valve and a flow control valve in the system can be adjusted according to needs. According to the multi-stage ground source heat pump system, on the basis that the basic heat energy requirement is met, heat can be supplemented to the ground through the ground heat exchanger, so that the temperature of underground rock soil is kept stable, and the system construction cost is reduced. Meanwhile, the air source heat pump and the solar auxiliary heating system are introduced to serve as supplementary energy, balance of the underground temperature field can be further optimized, and the overall energy efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of heat pumps, and in particular to a multi-stage ground source heat pump system based on green buildings. Background Art

[0002] As we all know, with the rapid expansion of the global population and economy, the use of energy has increased exponentially. The current environmental pollution is becoming increasingly serious, and the living environment is being increasingly damaged, so people's demand for environmental protection and green is gradually increasing. In recent years, we have been actively researching and developing renewable energy. Although there are new energy sources such as solar energy, nuclear fusion energy, bioenergy, wind energy, hydropower, wave energy, tidal energy and underground thermal energy, these energy sources are low-grade energy, so their development and utilization require corresponding advanced technology and equipment. In our daily life, the application of low-grade thermal energy is everywhere, and its utilization prospects are very broad. The most effective way to utilize and recycle low-grade thermal energy is heat pump technology, which has great value in energy saving, environmental protection and solving energy crisis for the research and development and promotion of heat pump technology. However, there are some problems with the current water source heat pump system, such as low utilization efficiency and single energy conversion method. Summary of the invention

[0003] The purpose of the present invention is to solve the problem of improving the efficiency of green energy utilization in the prior art and to propose a multi-stage ground source heat pump system based on green buildings.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A multi-stage ground source heat pump system based on green building includes a buried pipe heat exchanger, an atomizing pump, a ground source heat pump, an air compression pump, a solar auxiliary heating system and a control valve. The buried pipe heat exchanger is connected to an input port on the atomizing pump through a pipeline, the output port of the atomizing pump is connected to the ground source heat pump through a pipeline, the ground source heat pump is connected in series with an air source heat pump through a pipeline, and the output end of the air source heat pump is connected to the heat exchanger through a pipeline.

[0006] Preferably, a solar auxiliary heating system is arranged in parallel on the pipeline arranged between the atomizing pump and the ground source heat pump.

[0007] Preferably, the input end of the solar energy auxiliary heating system is connected to an atomizing pump, and the output end of the solar energy auxiliary heating system is connected to a pipeline between a ground source heat pump and a buried pipe heat exchanger.

[0008] Preferably, the water inlet end of the atomizing pump is arranged below the groundwater level.

[0009] Preferably, the heat exchanger is a fin tube radiator.

[0010] Preferably, control valves are arranged on the atomizing pump and the solar energy auxiliary heating system, the geothermal source heat pump and the air source heat pump, the air source heat pump and the heat exchanger, and the heat exchanger and the geothermal source heat pump system.

[0011] Preferably, the control valve includes at least a flow control valve and a reversing valve.

[0012] Preferably, the ground source heat pump is used as the main heat and cold source system to bear the basic load of heating and cooling, and the air source heat pump and the composite solar water heating system are used as auxiliary heat sources. At the same time, in the transition season, the composite solar water heating system supplements heat to the underground through the buried pipe heat exchanger.

[0013] Compared with the prior art, the present invention provides a multi-stage ground source heat pump system based on green buildings, which has the following beneficial effects:

[0014] A multi-stage ground source heat pump system based on green buildings. The ground source heat pump is used as the main source of heat and cold to bear the basic load of heating and cooling. The air source heat pump and the composite solar water heating system are used as auxiliary heat sources. At the same time, in the transition season, the composite solar water heating system supplements heat to the underground through the buried pipe heat exchanger, so that the underground rock and soil temperature is maintained stable within a certain range. Existing underground pipelines can be used to ensure the construction quality of the outdoor heat exchange system. In addition, adding some solar energy and air source heat pump systems as supplementary energy can also play a role in regulating the balance of the underground temperature field. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the structure of a multi-stage ground source heat pump system based on a green building proposed by the present invention;

[0016] In the figure: 1. Underground pipe heat exchanger; 2. Atomizing pump; 3. Ground source heat pump; 4. Solar auxiliary heating system; 5. Air source heat pump; 6. Heat exchanger; 7. Control valve. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0019] Reference Figure 1A multi-stage ground source heat pump system based on green buildings, comprising a ground pipe heat exchanger (1), an atomizing pump (2), a ground source heat pump (3), a solar auxiliary heating system (4), an air source heat pump (5) and a control valve (7), wherein the ground pipe heat exchanger (1) is connected to an input port on the atomizing pump through a pipeline, the output port of the atomizing pump is connected to the ground source heat pump (3) through a pipeline, the ground source heat pump (3) is connected in series with an air source heat pump (5) through a pipeline, and the output end of the air source heat pump (5) is connected to a heat exchanger (6) through a pipeline; a pipeline arranged between the atomizing pump (2) and the ground source heat pump (3) is connected in parallel with the air source heat pump (5). A solar energy auxiliary heating system (4) is provided; the input end of the solar energy auxiliary heating system (4) is connected to an atomizing pump (2), and the output end of the solar energy auxiliary heating system (4) is connected to a pipeline between a ground source heat pump (3) and a buried pipe heat exchanger (1); the water inlet end of the atomizing pump (2) is arranged below the groundwater level; control valves (7) are arranged on the atomizing pump (2) and the solar energy auxiliary heating system (4), the ground source heat pump and the air source heat pump (5), the air source heat pump (5) and the heat exchanger (6), and the heat exchanger (6) and the ground source heat pump (3); the control valve (7) comprises a flow control valve and a reversing valve.

[0020] When in use, the ground source heat pump (3) serves as the main cold and heat source system, bearing the basic load of heating and cooling, and the air source heat pump (5) and the composite solar water heating system serve as auxiliary heat sources. At the same time, in the transition season, the composite solar water heating system supplements heat to the underground through the buried pipe heat exchanger (1).

[0021] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multi-stage ground source heat pump system based on green building, characterized by: It includes a buried pipe heat exchanger, an atomizing pump, a ground source heat pump, a solar auxiliary heating system, an air source heat pump and a control valve. The buried pipe heat exchanger is connected to the input port on the atomizing pump through a pipeline, the output port of the atomizing pump is connected to the ground source heat pump through a pipeline, the ground source heat pump is connected in series with an air source heat pump through a pipeline, and the output end of the air source heat pump is connected to the heat exchanger through a pipeline.

2. According to claim 1, a multi-stage ground source heat pump system based on green building, characterized in that: A solar auxiliary heating system is arranged in parallel on the pipeline arranged between the atomizing pump and the ground source heat pump.

3. According to claim 1, a multi-stage ground source heat pump system based on green building, characterized in that: The input end of the solar energy auxiliary heating system is connected to the atomizing pump, and the output end of the solar energy auxiliary heating system is connected to the pipeline between the ground source heat pump and the buried pipe heat exchanger.

4. According to claim 1, a multi-stage ground source heat pump system based on green building, characterized in that: The water inlet end of the atomizing pump is arranged below the groundwater level.

5. The multi-stage ground source heat pump system based on green building according to claim 1, characterized in that: The heat exchanger is a fin tube radiator.

6. The multi-stage ground source heat pump system based on green building according to claim 1, characterized in that: Control valves are arranged on the atomizing pump and the solar energy auxiliary heating system, the geothermal source heat pump and the air source heat pump, the air source heat pump and the heat exchanger, and the heat exchanger and the geothermal source heat pump system.

7. The multi-stage ground source heat pump system based on green building according to claim 1, characterized in that: The control valve at least includes a flow control valve and a reversing valve.

8. The multi-stage ground source heat pump system based on green building according to claim 1, characterized in that: The ground source heat pump is used as the main heat and cold source system to bear the basic load of heating and cooling. The air source heat pump and the composite solar water heating system are used as auxiliary heat sources. At the same time, in the transition season, the composite solar water heating system supplements heat to the underground through the buried pipe heat exchanger.

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