A thermal energy dynamic regulation system for a building
By combining indoor and outdoor piping systems, heat exchangers, and energy storage wells in buildings, the high cost and high energy consumption of existing systems are solved by utilizing the energy reserves of nature for heat storage and release, achieving flexible temperature control and energy-saving effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- XI'AN PETROLEUM UNIVERSITY
- Filing Date
- 2023-08-31
- Publication Date
- 2026-06-30
AI Technical Summary
Existing dynamic thermal energy control systems in buildings suffer from high costs, inconvenient installation, and high energy consumption, especially in areas with large diurnal temperature differences. Central heating networks require high initial investment and are inconvenient to install, while independent air conditioning systems consume high energy and have environmental impacts.
It adopts a combination of indoor and outdoor piping systems, heat exchangers and energy storage wells, and stores and releases heat by circulating liquid in S-shaped heat pipes. It utilizes the natural energy reserves for dynamic regulation, avoids the use of refrigerants, and allows for flexible installation and maintenance.
It achieves dynamic adjustment of indoor temperature without consuming new energy sources, reducing energy consumption, saving energy and protecting the environment, and is easy to install with high economic benefits.
Smart Images
Figure CN117091185B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of thermal energy conversion technology, and more specifically to a dynamic thermal energy control system for buildings. Background Technology
[0002] In the overall energy consumption of a building, the energy consumption of the indoor environmental temperature control system generally accounts for a large proportion. Especially for industrial plants located in areas with large temperature differences between day and night, direct sunlight and strong radiation during the day result in high temperatures, while at night the ground dissipates heat rapidly, causing a sharp drop in temperature. In open areas, the cost of heating and cooling for self-built houses and centralized energy supply equipment is relatively high.
[0003] Existing dynamic thermal energy control systems generally rely on centralized heating networks or independently installed air conditioning systems. Centralized heating networks require advance planning and pre-laying of pipelines, resulting in high initial investment costs and inconvenience for later installation. Independently installed air conditioning systems have high energy consumption, which is not conducive to energy conservation, and the refrigerants used in air conditioning can easily affect the environment. Summary of the Invention
[0004] The purpose of this invention is to overcome the problems in the prior art and provide a dynamic thermal energy control system for buildings.
[0005] This invention provides a dynamic thermal energy control system for buildings, comprising: an indoor piping system, an outdoor piping system, a heat exchanger, and an energy storage well. The indoor piping system includes indoor pipes and a first pump body installed on the indoor pipes. The indoor pipes are laid on the indoor floor of the building for heat exchange with the indoor floor. The outdoor piping system includes outdoor pipes and a first shut-off valve installed on the outdoor pipes. The outdoor pipes are laid on the exterior of the building and connected to the indoor pipes. The outdoor pipes are used for heat exchange with the building walls. The heat exchanger includes a shell and an S-shaped heat-conducting pipe installed inside the shell. The two ends of the S-shaped heat-conducting pipe are connected to the indoor pipes and the outdoor pipes, respectively, forming a first loop. A first circulating fluid flows through the first loop. The energy storage well is installed in the ground and is connected to the internal cavity of the shell to form a second loop. A second pump body is installed in the second loop, and a second circulating fluid flows through the second loop.
[0006] Preferably, the end of the S-shaped heat pipe is provided with a first switching valve, which selectively connects the outdoor pipeline and the branch pipeline. The branch pipeline is connected to the indoor pipeline. By rotating the first switching valve, the branch pipeline, the indoor pipeline, and the S-shaped heat pipe can form a loop.
[0007] Preferably, the energy storage well includes a cold well and a hot well, and the cold well and the hot well are located in an underground aquifer with a distance of more than 15 meters between them; both the cold well and the hot well are connected to the internal cavity of the shell, the cold well is used to store cold energy, and the hot well is used to store heat energy.
[0008] Preferably, the thermal energy dynamic control system for buildings further includes multiple mounting plates, each mounting plate having parallel media pipes. After the mounting plates are laid on the indoor floor, the multiple media pipes can form an S-shaped or U-shaped media main pipe, with both ends of the media main pipe connected to the indoor pipeline and the outdoor pipeline, respectively.
[0009] Preferably, multiple mounting plates are arranged in a matrix on the indoor floor. The media pipes on the multiple mounting plates in the same column are interconnected to form an inlet media pipe and a return media pipe. The same end of the inlet media pipe and the return media pipe are connected by a U-shaped pipe. The same other end of the inlet media pipe and the return media pipe are respectively connected to the indoor pipeline and the outdoor pipeline, forming a loop.
[0010] Preferably, the U-shaped tubes on the plurality of mounting plates in adjacent columns are arranged opposite each other at both ends of the matrix.
[0011] Compared with existing technologies, the beneficial effects of this invention are as follows: The dynamic thermal energy control system for buildings of this invention can provide heating to the interior at night and cooling during the day. The cooling and heating capacities are derived from external energy reserves stored at night and in summer, respectively, without consuming new energy. Compared to centralized energy supply networks, it eliminates the need for pre-planning and pre-burying pipelines, making installation convenient. Compared to independently installed air conditioning systems, this invention's dynamic thermal energy control system for buildings utilizes naturally stored energy, without refrigerants, resulting in energy conservation, environmental protection, and high economic benefits. This invention utilizes a flexibly disassembled and installable indoor temperature control system and an external wall energy absorption system to exchange heat with the energy storage well, dynamically achieving flexible control effects of daytime cooling and nighttime heating. This facilitates installation and maintenance and effectively reduces the overall energy consumption of the building. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the present invention;
[0013] Figure 2 This is a schematic diagram of the branch pipeline of the present invention;
[0014] Figure 3 This is a schematic diagram of the mounting plate installation according to the present invention;
[0015] Figure 4 This is a schematic diagram of the mounting plate of the present invention;
[0016] Figure 5 This is a partial cross-sectional view of the present invention;
[0017] Figure 6 This is a schematic diagram of the multi-stage heat exchanger of the present invention.
[0018] Explanation of reference numerals in the attached figures:
[0019] 1. Indoor piping, 2. Outdoor piping, 3. Heat exchanger, 4. Recharge reflux valve, 5. First switching valve, 6. Energy storage well, 7. Mounting plate, 10. Skirting board decorative panel, 11. PVC pipe, 12. Sealing gasket, 13. U-shaped PVC connecting pipe, 21. First shut-off valve, 22. Branch piping, 121. Wedge-shaped sealing ring, 123. Wedge-shaped sealing ring, 124. Hard protrusion, 122. Hollow elastic layer. Detailed Implementation
[0020] The specific embodiments of the present invention are described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0021] This embodiment provides a dynamic thermal energy control system for buildings, such as... Figure 1 The system includes: an indoor piping system, an outdoor piping system, a heat exchanger 3, and an energy storage well 6. The indoor piping system includes an indoor pipe 1 and a first pump body installed on the indoor pipe 1. The indoor pipe 1 is laid on the indoor floor of the building and is used for heat exchange with the indoor floor. The outdoor piping system includes an outdoor pipe 2 and a first shut-off valve 21 installed on the outdoor pipe 2. The outdoor pipe 2 is laid on the outside of the building and is connected to the indoor pipe 1. The outdoor pipe 2 is used for heat exchange with the building walls. The heat exchanger 3 includes a shell and an S-shaped heat-conducting pipe installed inside the shell. The two ends of the S-shaped heat-conducting pipe are connected to the indoor pipe 1 and the outdoor pipe 2 respectively, forming a first loop. A first circulating liquid flows in the first loop. The energy storage well 6 is located in the stratum and is connected to the internal cavity of the shell to form a second loop. A second pump body is installed in the second loop, and a second circulating liquid flows in the second loop.
[0022] During the day, when the external temperature of the building is high, the first and second pumps are activated. The first pump rotates clockwise, and the first circulating liquid flows in the first loop in the direction of S-shaped heat conduction pipe → indoor pipe 1 → outdoor pipe 2 → S-shaped heat conduction pipe. The first circulating liquid absorbs heat from the walls and transfers it to the second circulating liquid through the S-shaped heat conduction pipe. The second circulating liquid, under the action of the second pump, is pumped to the energy storage well 6 to store thermal energy (for nighttime backup). Simultaneously, the first circulating liquid flows out of the S-shaped heat conduction pipe, its temperature decreases after cooling, and is pumped to the indoor floor by the first pump, delivering cooling capacity to the interior. The remaining cooling capacity after indoor cooling absorbs the radiant heat energy from the building's exterior walls, further reducing internal cooling losses and increasing nighttime heat reserves. This exchange method is particularly suitable for temperature control in suburban factories and independent buildings in open areas, and the external piping allows users in non-centralized energy supply areas to easily install it themselves.
[0023] Similarly, when the outside temperature is low at night, the first and second pumps are started. The first pump rotates in the forward direction, and the flow direction of the first circulating liquid in the first circuit is S-shaped heat conduction pipe → indoor pipe 1 → outdoor pipe 2 → S-shaped heat conduction pipe. The first circulating liquid absorbs the cold energy from the wall and transfers it to the second circulating liquid through the S-shaped heat conduction pipe. The second circulating liquid is pumped to the energy storage well 6 by the second pump to store the cold energy (for daytime standby). At the same time, the first circulating liquid flows out from the S-shaped heat conduction pipe, and its temperature rises after heat exchange. It is then pumped to the indoor floor by the first pump to transfer heat to the room.
[0024] The building thermal energy dynamic control system of this embodiment can be used to supply heat to the indoor environment at night and cool it during the day. The cooling and heating capacities are stored external energy at night and during the day, respectively, without consuming new energy. Compared with centralized energy supply networks, it does not require advance planning and pre-buried pipelines, making installation convenient. Compared with independently installed air conditioning systems, this building thermal energy dynamic control system uses all the stored energy from nature, does not use refrigerants, is energy-saving and environmentally friendly, and has high economic benefits.
[0025] Preferably, such as Figure 2 The S-shaped heat pipe is equipped with a first switching valve 5 at its end. The first switching valve 5 is connected to both the outdoor pipe 2 and the branch pipe 22. The branch pipe 22 is connected to the indoor pipe 1. By rotating the first switching valve 5, the branch pipe 22 can form a loop with the indoor pipe 1 and the S-shaped heat pipe.
[0026] By adjusting the first switching valve 5, it is possible to select whether the indoor pipe 1 and the outdoor pipe 2 form a loop. When the first switching valve 5 is adjusted, the indoor pipe 1 and the outdoor pipe 2 do not form a loop. During the day, only the branch pipe 22 and the indoor pipe 1 are used to supply low-power cooling capacity to the indoor area. At night, only the branch pipe 22 and the indoor pipe 1 are used to supply heat to the indoor area. This avoids the first circulating liquid flowing through the outdoor pipe 2 and freezing and cracking the outdoor pipe 2. It also avoids bringing too much external cooling capacity into the energy storage well 6, which would cause the loss of stored thermal energy.
[0027] Preferably, the energy storage well 6 includes a cold well and a hot well, and the cold well and the hot well are located underground with a distance of more than 15 meters between them; both the cold well and the hot well are connected to the internal cavity of the shell, the cold well is used to store cold energy, and the hot well is used to store heat energy.
[0028] The cold well stores cold energy at night and cools the first circulating fluid during the day, thus cooling the inside and outside of the building; the hot well stores heat energy during the day and heats the first circulating fluid at night, thus heating the inside of the building.
[0029] Preferably, such as Figure 3-4The thermal energy dynamic control system for buildings also includes multiple mounting plates 7, each mounting plate 7 having parallel media pipes inside. After the mounting plates 7 are laid on the indoor floor, the multiple media pipes can form an S-shaped or U-shaped media main pipe, with both ends of the media main pipe connected to the indoor pipeline 1 and the outdoor pipeline 2, respectively.
[0030] Mounting plate 7 is similar to floor tiles, making it easy to install on indoor floors later.
[0031] Preferably, such as Figure 3 Multiple mounting plates 7 are arranged in a matrix on the indoor floor. The medium pipes on the multiple mounting plates 7 in the same column are interconnected to form an inlet medium pipe and a return medium pipe. The same end of the inlet medium pipe and the return medium pipe are connected by a U-shaped pipe. The same other end of the inlet medium pipe and the return medium pipe are respectively connected to the indoor pipe 1 and the outdoor pipe 2, forming a loop. The U-shaped pipes on the multiple mounting plates 7 in adjacent columns are arranged opposite each other at both ends of the matrix.
[0032] The arrangement of multiple mounting plates 7 on the indoor floor is as follows: Figure 3 The alternating forward and reverse flow design is mainly to ensure a more uniform indoor temperature distribution during temperature regulation. Other flow arrangement methods do not affect the normal operation of the system.
[0033] Figure 5 In the middle, the skirting board decorative panel 10, the medium pipeline is a PVC pipe 11, and the U-shaped pipe adopts a U-shaped PVC connecting pipe 13. The end of the PVC pipe 11 and the U-shaped PVC connecting pipe 13 are fused and fixedly connected by a sealing gasket 12. The sealing gasket 12 is made of thermoplastic polyurethane elastomer (TPU) material. The inner wall of the sealing gasket 12 is fixedly connected to the outer wall of the wedge-shaped sealing ring 121. The width of the outer wall of the wedge-shaped sealing ring 121 is greater than the width of the sealing gasket 12. Therefore, the outer wall of the wedge-shaped sealing ring 121... The wall can extend into the interior of PVC pipe 11 and U-shaped PVC connecting pipe 13; the two ends of the sealing gasket 12 are provided with multiple layers of hard protrusions 124, and the outer wall of the wedge-shaped sealing ring 121 is provided with multiple wedge-shaped sealing rings 123 coaxial with the wedge-shaped sealing ring 121. The hard protrusions 124 and the wedge-shaped sealing rings 123 can improve the sealing effect; a hollow elastic layer 122 is provided between the wedge-shaped sealing ring 121 and the sealing gasket 12, and the two side walls of the hollow elastic layer 122 can be compressed and deformed inward.
[0034] There are multiple heat exchangers 3 connected in series, with the S-shaped heat pipes of each heat exchanger 3 connected in series, and the internal cavities of each heat exchanger 3 shell connected in series.
[0035] Taking the multi-stage heat exchanger 3 as an example, the energy extraction end of the first-stage heat exchanger 3 is directly connected to the heat source output pipeline of the hot well to provide heat source supply to the heat exchanger 3, thereby heating the S-shaped heat pipe. The cold energy of the first circulating liquid in the S-shaped heat pipe is exchanged with the second circulating liquid in the heat exchanger for heat exchange. The heat source is then input from the return end of the first-stage heat exchanger 3 to the energy storage well extraction end of the second-stage heat exchanger 3, and then the residual heat source is supplied to the energy storage well extraction end of the nth-stage heat exchanger 3 through the return end of the second-stage heat exchanger 3. The heat source inside each stage of the heat exchanger 3 is cooled down step by step.
[0036] Each stage of the heat exchanger 3 has its storage well extraction end connected to the storage well 6 via a reinjection backflow valve 4. The reinjection temperature, falling between the heat source and cold source temperatures, is used to regulate the heat exchange temperature of the heat exchanger 3. By adjusting the temperature of each stage of the heat exchanger 3, the difference between the heat source temperature and the return temperature of the first circulating liquid is reduced, thus improving the heat absorption efficiency of the temperature-regulating medium. In cooling mode, while each stage of the heat exchanger 3 utilizes the cold source to achieve heat exchange and cooling with the first cycle, the reinjection temperature returning to the heat source can also be used to improve heat exchange efficiency, achieving a more rapid temperature regulation effect.
[0037] In the specific temperature control process, the backflow valves 4 of each stage of the heat exchanger 3 can be set to adjust their opening degree in the following manner:
[0038] The temperature Ts of the reinjection pipeline of energy storage well 6 and the extraction end temperature Tbi of each stage of heat exchanger 3 are monitored in real time, where i represents the corresponding number of the heat exchanger stage. The reverse flow ratio of each stage of heat exchanger is calculated according to the difference Δi between the extraction end temperature Tbi of the energy storage well and the target temperature of that stage of heat exchanger. The opening degree of the reinjection reverse flow valve 4 of the heat exchanger 3 is adjusted according to the reverse flow ratio of each stage. Here, Δi is the opening degree with the highest energy exchange efficiency obtained by iterative calculation of the thermodynamic simulation model of the heat exchange system through machine learning algorithm. The target temperature of each stage of heat exchanger 3 is also obtained by iterative calculation of the above thermodynamic simulation model through machine learning. In this embodiment, the reinjection adjustment amount of each stage of heat exchanger 3 is determined by the proportion of the difference Δi between the extraction end temperature Tbi of the energy storage well and the target temperature of the heat exchanger 3 in the total deviation of the system, to ensure the overall stable operation of the system and to dynamically adjust its operating temperature according to the heat exchange efficiency to improve the overall heat exchange efficiency of the system.
[0039] This embodiment allows for flexible installation of temperature-regulating medium pipelines both indoors and outdoors of buildings. By extracting heat or cold energy from relatively stable underground energy storage wells, it achieves cooling or heating effects based on temperature differences. The system in this embodiment is flexible and convenient to install, highly efficient, and has low operating costs. To prevent the temperature-regulating medium pipelines from freezing and damaging them at night, a storage tank can be connected to the outdoor pipeline system to discharge a portion of the temperature-regulating medium into the storage tank, thus protecting the medium pipelines.
[0040] The usage method for building thermal energy dynamic control systems is as follows:
[0041] During the day, when the outside temperature of the house is high, the first and second pumps are started. The first pump rotates in the forward direction, and the first circulating liquid flows in the first loop in the direction of S-shaped heat conduction pipe → indoor pipe 1 → outdoor pipe 2 → S-shaped heat conduction pipe. The first circulating liquid absorbs heat from the wall and transfers the heat to the second circulating liquid through the S-shaped heat conduction pipe. The second circulating liquid is pumped to the energy storage well 6 by the second pump to store thermal energy (for backup at night). At the same time, the first circulating liquid flows out of the S-shaped heat conduction pipe and its temperature drops after cooling. It is then pumped to the indoor floor by the first pump to deliver cooling to the room.
[0042] Similarly, when the outside temperature is low at night, the first and second pumps are started. The first pump rotates in the forward direction, and the flow direction of the first circulating liquid in the first circuit is S-shaped heat conduction pipe → indoor pipe 1 → outdoor pipe 2 → S-shaped heat conduction pipe. The first circulating liquid absorbs the cold energy from the wall and transfers it to the second circulating liquid through the S-shaped heat conduction pipe. The second circulating liquid is pumped to the energy storage well 6 by the second pump to store the cold energy (for daytime standby). At the same time, the first circulating liquid flows out from the S-shaped heat conduction pipe, and its temperature rises after heat exchange. It is then pumped to the indoor floor by the first pump to transfer heat to the room.
[0043] By adjusting the first switching valve 5, it is possible to select whether the indoor pipe 1 and the outdoor pipe 2 form a loop. When the first switching valve 5 is adjusted, the indoor pipe 1 and the outdoor pipe 2 do not form a loop. During the day, only the branch pipe 22 and the indoor pipe 1 are used to supply low-power cooling capacity to the indoor area. At night, only the branch pipe 22 and the indoor pipe 1 are used to supply heat to the indoor area. This avoids the first circulating liquid flowing through the outdoor pipe 2 and freezing and cracking the outdoor pipe 2. It also avoids bringing too much external cooling capacity into the energy storage well 6, which would cause the loss of stored thermal energy.
[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A dynamic thermal energy control system for buildings, characterized in that, include: The indoor piping system includes an indoor pipe (1) and a first pump body installed on the indoor pipe (1). The indoor pipe (1) is laid on the indoor floor of the building and is used for heat exchange with the indoor floor. The outdoor piping system includes an outdoor pipe (2) and a first shut-off valve (21) installed on the outdoor pipe (2). The outdoor pipe (2) is laid outside the building and connected to the indoor pipe (1). The outdoor pipe (2) is used to exchange heat with the building wall. The heat exchanger (3) includes a shell and an S-shaped heat pipe installed inside the shell. The two ends of the S-shaped heat pipe are connected to the indoor pipe (1) and the outdoor pipe (2) respectively, forming a first loop. A first circulating liquid flows in the first loop. The energy storage well (6) is set in the formation. The energy storage well (6) is connected to the internal cavity of the shell to form a second loop. The second loop is equipped with a second pump body and a second circulating fluid flows in the second loop. The end of the S-shaped heat pipe is provided with a first switching valve (5), and the first switching valve (5) selectively connects to the outdoor pipe (2) or the branch pipe (22). The branch pipe (22) connects to the indoor pipe (1). By rotating the first switching valve (5), the branch pipe (22) can form a loop with the indoor pipe (1) and the S-shaped heat pipe.
2. The thermal energy dynamic control system for buildings as described in claim 1, characterized in that, The energy storage well (6) includes a cold well and a hot well, and the cold well and the hot well are located in the underground aquifer with a distance of more than 15 meters between them; the cold well and the hot well are both connected to the internal cavity of the shell, the cold well is used to store cold energy, and the hot well is used to store heat energy.
3. The thermal energy dynamic control system for buildings as described in claim 1, characterized in that, It also includes multiple mounting plates (7), each mounting plate (7) is provided with parallel media pipes, and after the mounting plate (7) is laid on the indoor floor, the multiple media pipes can form an S-shaped or U-shaped media main pipe, and the two ends of the media main pipe are respectively connected to the indoor pipeline (1) and the outdoor pipeline (2).
4. The thermal energy dynamic control system for buildings as described in claim 3, characterized in that, Multiple mounting plates (7) are arranged in a matrix on the indoor ground. The medium pipes on the multiple mounting plates (7) in the same column are interconnected to form an inlet medium pipe and a return medium pipe. The same end of the inlet medium pipe and the return medium pipe are connected by a U-shaped pipe. The same other end of the inlet medium pipe and the return medium pipe are respectively connected to the indoor pipe (1) and the outdoor pipe (2) to form a loop.
5. The thermal energy dynamic control system for buildings as described in claim 4, characterized in that, The U-shaped tubes on the multiple mounting plates (7) of two adjacent columns are set opposite each other at both ends of the matrix.