System for utilizing natural energy of underground surrounding rock to dissipate heat of machine room and control method thereof

Abstract

The present application belongs to the field of heat utilization, and discloses a system for utilizing natural energy of underground surrounding rock to eliminate the waste heat of a machine room, which comprises a water supplement tank, a heat preservation water tank, a control module, a corridor cavern and an air conditioning machine room cavern; the air conditioning machine room cavern is provided with a phase change heat exchange wall, the phase change heat exchange wall is provided with a first heat exchange pipeline, the inner wall of the corridor cavern is provided with a heat conduction wall, the heat conduction wall is provided with a second heat exchange pipeline, the C end of the second heat exchange pipeline is communicated with the water supplement tank, and the D end is communicated with the heat preservation water tank and the B end of the first heat exchange pipeline; the A end of the first heat exchange pipeline is communicated with the water supplement tank and the heat preservation water tank, and the B end is communicated with the heat preservation water tank and the D end of the second heat exchange pipeline; the heat preservation water tank is provided with an electric heating device and a temperature detector; the air conditioning machine room cavern and the corridor cavern are provided with temperature detectors; the temperature detectors are connected with the control module, and the control module is connected with the electric heating device. The problem of large heat dissipation of electromechanical equipment of the underground centralized air conditioning system and difficult heat exhaust is solved.

Description

Technical Field

[0001] This invention belongs to the field of heat utilization technology, and relates to a system and its control method for utilizing the natural energy of underground surrounding rock to dissipate waste heat in a machine room. Background Technology

[0002] Centralized air conditioning systems used in underground and enclosed environments are mainly divided into two design methods: surface and underground. Both design methods have drawbacks: for surface centralized air conditioning systems, as the burial depth increases, the transmission length, equipment pressure-bearing capacity, system scale, and pipe material consumption all increase significantly, making the engineering more difficult; for underground centralized air conditioning systems, one of the main obstacles to their application is that, in underground environments, the soil and rocks are almost unaffected by the external climate, the surrounding rock itself has thermal inertia and thermal inertia, and remains at a constant temperature year-round, with the rock wall temperature increasing with depth. Furthermore, the underground space is relatively enclosed, resulting in a large heat dissipation from electromechanical equipment and difficulty in dissipating heat to the surrounding environment. Summary of the Invention

[0003] The purpose of this invention is to provide a system and its control method for dissipating waste heat in a computer room by utilizing the natural energy of the surrounding underground rock, thereby solving the problems of large heat dissipation and difficulty in heat removal of electromechanical equipment in underground centralized air conditioning systems.

[0004] This invention is achieved through the following technical solution:

[0005] A system for dissipating waste heat in a machine room by utilizing the natural energy of the surrounding underground rock includes a water supply tank, an insulated hot water tank, a control module, a corridor chamber, and an air conditioning machine room chamber;

[0006] The inner wall of the air conditioning room is equipped with a phase change heat exchange wall. Inside the phase change heat exchange wall, there is a first heat exchange pipe arranged in a serpentine pattern. One end of the first heat exchange pipe is denoted as end A, and the other end is denoted as end B.

[0007] The inner wall of the corridor cave is equipped with a heat-conducting wall, and a second heat exchange pipe is installed inside the heat-conducting wall. One end of the first heat exchange pipe is denoted as end C, and the other end is denoted as end D. End C of the second heat exchange pipe is connected to the water supply tank, and end D of the second heat exchange pipe is connected to the insulated hot water tank and end B of the first heat exchange pipe.

[0008] The A end of the first heat exchange pipe is connected to the outlet of the water supply tank and the insulated hot water tank, and the B end of the first heat exchange pipe is connected to the insulated hot water tank and the D end of the second heat exchange pipe.

[0009] The insulated hot water tank is equipped with an electric heating device and a temperature detector T1; a temperature detector T2 is installed in the air conditioning room cave, and a temperature detector T3 is installed in the corridor cave.

[0010] Temperature detectors T1, T2, and T3 are all connected to the signal input terminal of the control module, and the signal output terminal of the control module is connected to the signal input terminal of the electric heating device.

[0011] Furthermore, the water replenishment tank is connected to a three-way reversing valve F5 via pipe G1, and a variable frequency water pump is installed on pipe G1;

[0012] Three-way directional valve F5 is connected to three-way directional valve F6 via pipe G2, and to three-way directional valve F7 via pipe G3; three-way directional valve F7 is connected to three-way directional valve F4 via pipe G4; three-way directional valve F4 is connected to three-way directional valve F8 via pipe G5; three-way directional valve F8 is connected to three-way directional valve F3 via pipe G6, and three-way directional valve F3 is connected to the inside of the insulated hot water tank via pipe G7;

[0013] A pipe G8 connects the three-way reversing valve F6 and the three-way reversing valve F3;

[0014] The three-way reversing valve F6 is connected to end A of the first heat exchange pipe, and end B of the first heat exchange pipe is connected to the three-way reversing valve F4.

[0015] The three-way reversing valve F7 is connected to end C of the second heat exchange pipe, and end D of the second heat exchange pipe is connected to the three-way reversing valve F8.

[0016] The three-way directional valves F3-F8 are connected to the control module respectively.

[0017] Furthermore, a heat insulation layer is provided at the contact point between the phase change heat-generating wall and the surrounding rock.

[0018] Furthermore, both the first and second heat exchange pipes are made of thermally conductive materials.

[0019] Furthermore, the exposed pipes between the outlets of the first and second heat exchange pipes and the insulated hot water tank are covered with an insulation layer.

[0020] Furthermore, the insulated hot water tank has a hollow structure, which is filled with insulation material.

[0021] Furthermore, the insulated hot water tank and the water supply tank are directly connected via ball valve F1;

[0022] A ball valve F2 is installed at the outlet of the insulated hot water tank. Ball valves F1 and F2 are respectively connected to the control module.

[0023] Furthermore, the phase change heat-converting wall is filled with a phase change heat-converting material, and the heat-conducting wall is filled with a heat-conducting material.

[0024] This invention also discloses a control method for the system that utilizes the natural energy of underground surrounding rock to dissipate waste heat in the machine room, comprising the following processes:

[0025] The control module collects data from temperature detectors T2 and T3, compares the data, and determines the relative temperatures of the two detectors.

[0026] When the temperature collected by temperature detector T3 is lower than the temperature collected by temperature detector T2, the control module adjusts the water flow to first flow into the corridor chamber S1 for heat exchange, then into the air conditioning room chamber S2 for heat exchange, and finally into the insulated hot water tank.

[0027] When the temperature collected by temperature detector T3 is higher than the temperature collected by temperature detector T2, the control module adjusts the water flow to first flow into the air conditioning room S2 for heat exchange, then into the corridor S1, and finally into the insulated hot water tank.

[0028] The control module collects data from the temperature detector T1 in real time and compares it with the preset temperature. When the temperature collected by the temperature detector T1 is lower than the preset temperature, the control module starts the electric heating device.

[0029] When the temperature value collected by the temperature detector T1 reaches the preset temperature, the control module shuts off the electric heating device and turns on the insulated hot water tank.

[0030] Compared with the prior art, the present invention has the following beneficial technical effects:

[0031] This invention discloses a system for dissipating waste heat in an underground machine room using the natural energy of the surrounding rock. The system includes a water supply tank, an insulated hot water tank, a control system, a corridor chamber, and an air conditioning machine room chamber. Temperature detectors are installed in both the corridor chamber and the air conditioning machine room chamber. The control module compares and analyzes the temperature values ​​from the two detectors, causing the water in the water supply tank to first flow through the lower-temperature chamber before entering the higher-temperature chamber for heat exchange, thus improving heat energy utilization efficiency. The insulated hot water tank is equipped with an electric heating device, which heats the water when the temperature in the insulated hot water tank falls below a preset value to meet usage requirements. The invention relates to a system where the inner wall of an air conditioning room is equipped with a phase-change heat exchange wall for heat exchange between two media. The phase-change heat exchange wall contains a first heat exchange pipe arranged in a serpentine pattern, which increases the heat exchange area and improves efficiency. The inner wall of the corridor chamber is equipped with a heat-conducting wall to increase thermal conductivity and assist the phase-change heat exchange wall. Due to limited space in the air conditioning room, a serpentine design was used to increase the heat exchange area of ​​the pipes. However, since the corridor chamber is relatively long, a second heat exchange pipe is designed as a straight pipe for easier installation and lower cost. This invention utilizes the surrounding rock as a constant-temperature heat source, transferring the heat from the surrounding rock to the surface for energy utilization. This maintains the internal temperature of the air conditioning room within a suitable range, ensuring the efficient operation of the air conditioning system and effectively reducing the project's operating and management costs, thus demonstrating practical significance in energy conservation and cost reduction.

[0032] Furthermore, the phase change heat-transforming wall in the air conditioning room cavern of the present invention is provided with a heat insulation layer at the contact part with the surrounding rock, which reduces heat loss.

[0033] Furthermore, the insulated hot water tank adopts a hollow structure, with insulation material filling the inside to reduce heat exchange with the outside environment. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of a system for dissipating waste heat in a computer room using the natural energy of underground surrounding rock, according to the present invention.

[0035] Figure 2 This is a layout diagram of the air conditioning room cavity system of the present invention;

[0036] Figure 3 This is a layout diagram of the corridor and cavern system of the present invention;

[0037] Figure 4 This is a system control flowchart of the present invention for utilizing the natural energy of underground surrounding rock to dissipate waste heat in a computer room;

[0038] Figure 5 This is a schematic diagram of the water flow direction when the temperature collected by temperature detector T3 is lower than the temperature collected by temperature detector T2.

[0039] Figure 6 This is a schematic diagram of the water flow direction when the temperature collected by temperature detector T2 is lower than the temperature collected by temperature detector T3.

[0040] Among them, 1-water replenishment tank, 2-insulated hot water tank, 3-control module, 4-variable frequency water pump, 5-first heat exchange pipe, 6-phase change heat exchange wall, 7-heat conduction wall, 8-electric heating device, and 9-second heat exchange pipe. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the present invention clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention; that is, the described embodiments are only a part of the embodiments of the present invention, and not all of them.

[0042] The components described and illustrated in the accompanying drawings and embodiments of this invention can be arranged and designed in various different configurations. Therefore, the detailed description of the embodiments of the invention provided in the following drawings is not intended to limit the scope of the claimed invention, but merely to illustrate one selected embodiment of the invention. All other embodiments obtained by those skilled in the art based on the accompanying drawings and embodiments of this invention without inventive effort are within the scope of protection of this invention.

[0043] It should be noted that the terms “comprising,” “including,” or any other variations are intended to cover non-exclusive inclusion, such that a process, element, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to the process, element, method, article, or apparatus.

[0044] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the scope of protection of this application.

[0045] like Figure 1 As shown, this invention discloses a system for dissipating waste heat in an air conditioning room using the natural energy of underground surrounding rock, including a water supply tank 1, an insulated hot water tank 2, a control module 3, a corridor chamber S1, and an air conditioning room chamber S2; the insulated hot water tank 2 is equipped with an electric heating device 8 and a temperature detector T1, the control module 3 is used to collect data from the temperature detector T1 and compare it with a preset temperature, when the temperature value collected by the temperature detector T1 is lower than the preset temperature, the control module 3 sends a signal to start the electric heating device 8, when the temperature value collected by the temperature detector T1 reaches the preset temperature, the control module 3 sends a signal to turn off the electric heating device 8;

[0046] The insulated hot water tank 2 and the water supply tank 1 can also be connected through ball valve F1. The water in the water supply tank 1 can be directly heated by the electric heating device 8 and flow out through ball valve F2 for use. The insulated hot water tank 2 is made of stainless steel and has a hollow structure. The hollow structure is filled with insulation material to reduce heat exchange with the outside.

[0047] like Figure 2 As shown, a temperature detector T2 and a phase change heat exchange wall 6 are installed in the air conditioning room cavern S2. The phase change heat exchange wall 6 is filled with phase change heat exchange material, and a first heat exchange pipe 5 is arranged inside the phase change heat exchange material. The part of the phase change heat exchange wall 6 in contact with the surrounding rock is provided with a heat insulation layer. The first heat exchange pipe 5 is arranged in a serpentine shape and uses pipes with high thermal conductivity to increase the heat exchange area and enhance heat exchange with the surrounding medium.

[0048] Phase change heat transfer materials can be made of materials such as paraffin wax and salt hydrates, while insulation layers can be made of materials such as glass fiber, rock wool, and vacuum panels.

[0049] like Figure 3 As shown, a temperature detector T3 and a heat-conducting wall 7 are installed in the corridor chamber S1. The heat-conducting wall 7 is filled with a material with high thermal conductivity, and a second heat exchange pipe 9 is arranged inside the material with high thermal conductivity. The second heat exchange pipe 9 enters at one end of the heat-conducting wall 7 and passes through the heat-conducting wall 7 in a straight line. The material with high thermal conductivity can be such as silicon carbide, alumina, magnesium oxide, etc.

[0050] Water supply tank 1 is connected to three-way reversing valve F5 via pipe G1, and variable frequency water pump 4 is installed on pipe G1; three-way reversing valve F5 is connected to three-way reversing valve F6 via pipe G2, and to three-way reversing valve F7 via pipe G3; three-way reversing valve F7 is connected to the inlet end of the second heat exchange pipe 9, and the outlet end of the second heat exchange pipe 9 is connected to three-way reversing valve F8;

[0051] Three-way directional valve F6 is connected to the inlet end of the first heat exchange pipe 5, and the outlet end of the first heat exchange pipe 5 is connected to three-way directional valve F4; a pipe G4 connects three-way directional valve F7 and three-way directional valve F4; a pipe G5 connects three-way directional valve F4 and three-way directional valve F8; three-way directional valve F8 is connected to three-way directional valve F3 through pipe G6, and three-way directional valve F3 is connected to the inside of the insulated hot water tank 2 through pipe G7; a pipe G8 connects three-way directional valve F6 and three-way directional valve F3.

[0052] The control module 3 collects data from temperature detectors T2 and T3 and performs comparative analysis. By controlling the opening and closing of the three-way reversing valves F3-F8, the water in the water supply tank 1 first flows through the low-temperature chamber and then enters the high-temperature chamber.

[0053] like Figure 4 As shown, the control method of the present invention is as follows:

[0054] Step 1: Control module 3 collects data from temperature detectors T2 and T3, and performs comparative analysis:

[0055] Step Two:

[0056] 1) such as Figure 5 As shown, when the temperature collected by temperature detector T3 is lower than the temperature collected by temperature detector T2, control module 3 adjusts three-way reversing valves F5 and F7, and water flows into the corridor chamber S1 through three-way reversing valves F5 and F7 for heat exchange; control module 3 adjusts three-way reversing valves F8 and F4, and water flows into the air conditioning room chamber S2 through three-way reversing valves F8 and F4 for heat exchange; control module 3 adjusts three-way reversing valves F6 and F3, and water flows into the insulated hot water tank 2 through three-way reversing valves F6 and F3.

[0057] 2) such as Figure 6 As shown, when the temperature collected by temperature detector T3 is higher than the temperature collected by temperature detector T2, control module 3 adjusts three-way reversing valves F5 and F6, and water flows into the air conditioning room S2 through three-way reversing valves F5 and F6 for heat exchange; control module 3 adjusts three-way reversing valves F4 and F7, and water flows into the corridor S1 through three-way reversing valves F4 and F7; control module 3 adjusts three-way reversing valves F8 and F3, and water flows into the insulated hot water tank 2 through three-way reversing valves F8 and F3.

[0058] Step 3: Control module 3 collects data from temperature detector T1 and compares it with the preset temperature. When the temperature collected by temperature detector T1 is lower than the preset temperature, control module 3 starts electric heating device 8. When the temperature collected by temperature detector T1 reaches the preset temperature, control module 3 turns off electric heating device 8. Control module 3 opens ball valve F2 to provide domestic hot water.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A system for utilizing natural energy of underground surrounding rock to dissipate heat of a machine room, characterized in that, It comprises a water supply tank (1), a heat preservation hot water tank (2), a control module (3), a corridor chamber and an air conditioning machine room chamber; The inner wall of the air conditioning machine room chamber is provided with a phase change heat exchange wall (6), and the phase change heat exchange wall (6) is internally provided with a first heat exchange pipeline (5) arranged in a snakelike manner; one end of the first heat exchange pipeline (5) is marked as an A end, and the other end is marked as a B end; The inner wall of the corridor chamber is provided with a heat conduction wall (7), and the heat conduction wall (7) is internally provided with a second heat exchange pipeline (9); one end of the first heat exchange pipeline (5) is marked as a C end, and the other end is marked as a D end; the C end of the second heat exchange pipeline (9) is communicated with the water supply tank (1), and the D end of the second heat exchange pipeline (9) is communicated with the heat preservation hot water tank (2) and the B end of the first heat exchange pipeline (5); The A end of the first heat exchange pipeline (5) is communicated with the water outlet of the water supply tank (1) and the heat preservation hot water tank (2), and the B end of the first heat exchange pipeline (5) is communicated with the heat preservation hot water tank (2) and the D end of the second heat exchange pipeline (9); The heat preservation hot water tank (2) is internally provided with an electric heating device (8) and a temperature detector T1; the air conditioning machine room chamber is internally provided with a temperature detector T2, and the corridor chamber is internally provided with a temperature detector T3; The temperature detector T1, the temperature detector T2 and the temperature detector T3 are connected with the signal input end of the control module (3), and the signal output end of the control module (3) is connected with the signal input end of the electric heating device (8); The water supply tank (1) is communicated with a three-way reversing valve F5 through a pipeline G1, and the pipeline G1 is provided with a variable frequency water pump (4); The three-way reversing valve F5 is communicated with a three-way reversing valve F6 through a pipeline G2, and communicated with a three-way reversing valve F7 through a pipeline G3; the three-way reversing valve F7 is connected with the three-way reversing valve F4 through a pipeline G4; the three-way reversing valve F4 is connected with a three-way reversing valve F8 through a pipeline G5; the three-way reversing valve F8 is connected with the three-way reversing valve F3 through a pipeline G6, and the three-way reversing valve F3 is communicated with the inside of the heat preservation hot water tank (2) through a pipeline G7; The three-way reversing valve F6 is connected with the three-way reversing valve F3 through a pipeline G8; The three-way reversing valve F6 is connected with the A end of the first heat exchange pipeline (5), and the B end of the first heat exchange pipeline (5) is connected with the three-way reversing valve F4; The three-way reversing valve F7 is connected with the C end of the second heat exchange pipeline (9), and the D end of the second heat exchange pipeline (9) is connected with the three-way reversing valve F8; The three-way reversing valves F3-F8 are respectively connected with the control module (3); The phase change heat exchange wall (6) is provided with a heat insulation layer at the part in contact with the surrounding rock.

2. The system for dissipating the heat of the machine room by using the natural energy of the surrounding rock according to claim 1, characterized in that, The first heat exchange pipeline (5) and the second heat exchange pipeline (9) are both made of pipe materials made of heat conductive materials.

3. The system for dissipating the heat of the machine room by using the natural energy of the surrounding rock according to claim 1, characterized in that, The exposed pipeline pipe bodies between the outlets of the first heat exchange pipeline (5) and the second heat exchange pipeline (9) and the heat preservation hot water tank (2) are covered with heat preservation layers.

4. The system for dissipating the heat of the machine room by using the natural energy of the surrounding rock according to claim 1, characterized in that, The tank body of the heat preservation hot water tank (2) is a hollow structure, and the hollow structure is filled with heat preservation materials.

5. The system for dissipating the heat of the machine room by using the natural energy of the surrounding rock according to claim 1, characterized in that, The heat preservation hot water tank (2) and the water supply tank (1) are directly communicated through a ball valve F1; The outlet end of the heat preservation hot water tank (2) is provided with a ball valve F2, and the ball valve F1 and the ball valve F2 are respectively connected with the control module (3).

6. The system for dissipating excess heat from a machine room using natural energy from surrounding underground rock according to claim 1, characterized in that, The phase change heat exchange wall (6) is internally filled with phase change heat exchange materials, and the heat conduction wall (7) is internally filled with heat conductive materials.

7. The control method of the system for utilizing natural energy of underground surrounding rock to dissipate waste heat of a machine room according to any one of claims 1 to 6, characterized in that, The process includes the following: The control module (3) collects data from temperature detectors T2 and T3, compares the data, and determines the relative temperatures of temperature detectors T2 and T3. When the temperature collected by temperature detector T3 is lower than the temperature collected by temperature detector T2, the control module (3) adjusts the water flow to first flow into the corridor cave S1 for heat exchange, then into the air conditioning room cave S2 for heat exchange, and finally into the insulated hot water tank (2). When the temperature collected by temperature detector T3 is higher than the temperature collected by temperature detector T2, the control module (3) adjusts the water flow to first flow into the air conditioning room cave S2 for heat exchange, then into the corridor cave S1, and finally into the insulated hot water tank (2). The control module (3) collects the data of the temperature detector T1 in real time and compares it with the preset temperature. When the temperature collected by the temperature detector T1 is lower than the preset temperature, the control module (3) starts the electric heating device (8). When the temperature value collected by the temperature detector T1 reaches the preset temperature, the control module (3) shuts off the electric heating device (8) and turns on the insulated hot water tank (2).

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