A refrigeration and heating system using an energy-saving and carbon-reducing absorption chiller.
By combining solar collectors, phase change thermal storage devices, and intelligent controllers, absorption chillers have solved the problems of high energy consumption and high carbon emissions in traditional refrigeration and heating systems, achieving efficient, energy-saving, and carbon-reducing refrigeration and heating effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- PANASONIC REFRIGERATION DALIAN CO LTD
- Filing Date
- 2025-05-26
- Publication Date
- 2026-05-26
AI Technical Summary
Existing refrigeration and heating systems rely on fossil fuels, resulting in high energy consumption and high carbon emissions. Furthermore, traditional absorption refrigeration systems suffer from waste and limitations in energy utilization.
The system adopts an energy-saving and carbon-reducing absorption chiller, combined with solar collectors, phase change thermal storage devices, energy towers and regeneration devices. Through multiple circulation loops and intelligent controllers, it optimizes the utilization of heat sources, achieves dual heat source complementarity and solution regeneration, and utilizes paraffin-based composite phase change materials and adjustable wind caps to optimize system performance.
It effectively reduces system energy consumption and carbon emissions, improves energy utilization efficiency, ensures stable operation of the system under different environmental conditions, and achieves high-efficiency energy saving and carbon reduction.
Smart Images
Figure CN224284758U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air conditioning system technology, specifically to a refrigeration and heating system using an energy-saving and carbon-reducing absorption chiller. Background Technology
[0002] With the increasing severity of global climate change and the energy crisis, energy conservation, emission reduction, and sustainable development have become a global focus. In the field of cooling and heating, traditional systems typically rely on the combustion of fossil fuels, which not only leads to high energy consumption and carbon emissions but also causes serious environmental pollution. To address this challenge, people are seeking more environmentally friendly and efficient cooling and heating technologies.
[0003] Among existing refrigeration and heating systems, absorption refrigeration technology has attracted attention due to its ability to utilize low-grade heat energy. However, traditional absorption refrigeration systems still suffer from energy waste and carbon emissions during operation. For example, they may rely on a single heat source, such as natural gas or electricity, which limits their potential for energy conservation and carbon reduction. Utility Model Content
[0004] The purpose of this invention is to provide a refrigeration and heating system using an energy-saving and carbon-reducing absorption chiller to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a refrigeration and heating system employing an energy-saving and carbon-reducing absorption chiller, comprising an absorption chiller, a solar collector, a phase change thermal storage device, an energy tower, a regeneration device, a controller, and a phase change thermal storage device; the absorption chiller consists of an absorber, an evaporator, a regenerator, and a condenser; the regenerator is connected to the solar collector and the phase change thermal storage device through a first circulation loop, and the solar collector and the phase change thermal storage device are connected in parallel to form a dual heat source input structure; the energy tower is connected to the evaporator through a second circulation loop, and the second circulation loop is equipped with a solution concentration sensor and a variable frequency circulation pump; the energy tower is connected in series with the absorber and the condenser through a third circulation loop, and the third circulation loop is connected in parallel with the second circulation loop, with the end of the third circulation loop located before the circuit of the variable frequency circulation pump;
[0006] The energy tower is connected to the evaporator and the absorber through a second circulation loop and a third circulation loop, respectively. The second circulation loop is equipped with a solution concentration sensor and a variable frequency circulation pump.
[0007] The regeneration device is connected to the solar collector through the fourth circulation loop and forms a solution regeneration channel with the energy tower through the fifth circulation loop.
[0008] The controller is electrically connected to a meteorological data interface, a temperature sensor, and a solution concentration sensor, with the temperature sensor located inside the energy tower.
[0009] Preferably, the phase change thermal storage device is filled with a paraffin-based composite phase change material.
[0010] Preferably, the top of the energy tower is equipped with an adjustable vent cap, the opening of which is adjusted by the controller.
[0011] Preferably, the regeneration device is equipped with a multi-stage plate heat exchanger, the high-temperature side of which is connected to the outlet pipe of the solar collector, and the low-temperature side is connected to the dilute solution return pipe of the energy tower.
[0012] Preferably, the controller includes a machine learning unit that optimizes the heat source ratio strategy using historical operating data and activates the phase change thermal storage device to release heat in advance when the solar irradiance is below a set threshold.
[0013] Preferably, the second circulation loop is provided with a first switching valve at both the beginning and end, the third circulation loop is provided with a second switching valve at both the beginning and end, the fourth circulation loop is provided with a third switching valve at both the beginning and end, and the fifth circulation loop is provided with a fourth switching valve at both the beginning and end. At the same time, the second and third circulation loops are provided with extended pipelines and auxiliary switching valves.
[0014] Compared with the prior art, the beneficial effects of this utility model are: energy saving and carbon reduction. By combining absorption units with solar collectors, phase change thermal storage devices, etc., the energy consumption and carbon emissions during system operation are effectively reduced.
[0015] The dual heat source input structure connects the regenerator in parallel with the solar collector and phase change thermal storage device through the first circulation loop, achieving complementary heat sources day and night and improving energy utilization efficiency.
[0016] The solution regeneration channel connects the regeneration device to the solar collector via the fourth circulation loop and to the energy tower via the fifth circulation loop, thus optimizing the solution regeneration process.
[0017] Intelligent control: The controller is electrically connected to a meteorological data interface, a temperature sensor, and a solution concentration sensor to achieve real-time monitoring and intelligent adjustment of the system's operating status.
[0018] The system features a complementary day and night heat source structure, with paraffin-based composite phase change materials filling the phase change thermal storage device to improve system stability.
[0019] Adjustable ventilator: An adjustable ventilator is installed on the top of the energy tower, and its opening is adjusted by a controller to optimize the heat dissipation efficiency of the energy tower.
[0020] Multi-stage plate heat exchangers are installed within the regeneration unit to improve heat exchange efficiency and further enhance system performance.
[0021] Machine learning optimization: The controller contains a machine learning unit that optimizes the heat source allocation strategy using historical operating data, thereby improving system operating efficiency and response speed.
[0022] The phase change thermal storage device can be activated in advance to release heat when the solar irradiance is lower than the set threshold, ensuring that the system can operate stably under low light conditions. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the structure of this utility model;
[0024] Figure 2 This is a schematic diagram of the system of this utility model.
[0025] In the diagram: 1. Absorption chiller; 2. Solar collector; 3. Phase change thermal storage device; 4. Energy tower; 5. Regeneration device; 6. Controller; 7. Multi-stage plate heat exchanger; 8. First circulation loop; 9. Second circulation loop; 10. Third circulation loop; 11. Solution concentration sensor; 12. Variable frequency circulating pump; 13. Fourth circulation loop; 14. Fifth circulation loop; 15. Meteorological data interface; 16. Temperature sensor; 17. Fourth switching valve; 18. Adjustable vent cap; 19. First switching valve; 20. Second switching valve; 21. Third switching valve; 11-1. Absorber; 1-2. Evaporator; 1-3. Regenerator; 1-4. Condenser. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] Please see Figure 1-2 This utility model provides a technical solution: a refrigeration and heating system using an energy-saving and carbon-reducing absorption unit, which mainly consists of an absorption unit 1, a solar collector 2, a phase change thermal storage device 3, an energy tower 4, a regeneration device 5, and a controller 6.
[0028] The absorption chiller unit 1 consists of key components such as absorber 1-1, evaporator 1-2, regenerator 1-3, and condenser 1-4. The regenerator 1-3 is connected to the solar collector 2 and the phase change thermal storage device 3 through the first circulation loop 8. The solar collector 2 and the phase change thermal storage device 3 are connected in parallel to form a dual heat source input structure.
[0029] Energy tower 4 is connected to evaporator 1-2 through second circulation loop 9. Solution concentration sensor 11 and variable frequency circulation pump 12 are installed on second circulation loop 9. Energy tower 4 is connected in series with absorber 1-1 and condenser 1-4 through third circulation loop 10. At the same time, third circulation loop 10 is connected in parallel with second circulation loop 9. The tail end of third circulation loop 10 is located before the line of variable frequency circulation pump 12.
[0030] Energy tower 4 is connected to evaporator 1-2 and absorber 1-1 through second circulation loop 9 and third circulation loop 10 respectively. Solution concentration sensor 11 and variable frequency circulation pump 12 are specially installed on second circulation loop 9 to realize precise monitoring and adjustment of system operation status.
[0031] The regeneration device 5 is connected to the solar collector 2 through the fourth circulation loop 13 and to the energy tower 4 through the fifth circulation loop 14, forming a highly efficient solution regeneration channel to ensure that the system can operate continuously and stably.
[0032] The controller 6 is electrically connected to the meteorological data interface 15, the temperature sensor 16, and the solution concentration sensor 11. The temperature sensor 16 is installed inside the energy tower 4 to monitor the temperature changes inside the energy tower in real time and provide accurate operating data for the system.
[0033] Specifically, the phase change thermal energy storage device 3 is filled with a paraffin-based composite phase change material, which has good thermal energy storage capacity.
[0034] Specifically, the top of the energy tower 4 is specially designed with an adjustable vent 18, the opening of which can be adjusted according to actual needs. The adjustment process is automatically completed by the intelligent controller 6 to adapt to different environmental conditions and system operating requirements.
[0035] Specifically, the regeneration device 5 is equipped with a multi-stage plate heat exchanger 7, which makes the heat exchange more efficient. The high-temperature side of the multi-stage plate heat exchanger 7 is directly connected to the outlet pipe of the solar collector 2, while the low-temperature side is connected to the dilute solution return pipe of the energy tower 4, thereby realizing the efficient conversion and utilization of heat energy.
[0036] Specifically, controller 6 is installed in a waterproof and dustproof control cabinet, close to energy tower 4 and regeneration device 5, to reduce signal delay. This unit can continuously optimize the heat source ratio strategy by analyzing historical operating data. This intelligent adjustment mechanism enables the system to automatically decide whether to activate phase change thermal storage device 3 in advance to release stored heat energy based on real-time solar irradiance, thereby ensuring the efficient and stable operation of the entire system.
[0037] Specifically, the first switching valve 19 is provided at both the beginning and end of the second circulation loop 9, the second switching valve 20 is provided at both the beginning and end of the third circulation loop 10, the third switching valve 21 is provided at both the beginning and end of the fourth circulation loop 13, and the fourth switching valve 17 is provided at both the beginning and end of the fifth circulation loop 14. At the same time, the second circulation loop 9 and the third circulation loop 10 are provided with extended pipelines and auxiliary switching valves.
[0038] Working principle: In operation, the absorption chiller unit 1 is the core of the system, which consists of absorber 1-1, evaporator 1-2, regenerator 1-3, and condenser 1-4. The absorption chiller unit utilizes the absorption and evaporation processes of the solution to achieve refrigeration or heating.
[0039] Regenerators 1-3 are connected in parallel with solar collector 2 and phase change thermal storage device 3 via the first circulation loop 8, forming a dual heat source input structure. This means that the system can utilize solar energy and the thermal energy stored in the phase change material to regenerate the solution, improving efficiency.
[0040] Energy tower 4 is connected to evaporator 1-2 and absorber 1-1 via second circulation loop 9 and third circulation loop 10 respectively, to achieve energy exchange. The second circulation loop is equipped with solution concentration sensor 11 and variable frequency circulation pump 12 for monitoring and adjusting solution concentration and circulation flow rate.
[0041] The regeneration device 5 is connected to the solar collector 2 through the fourth circulation loop 13, and forms a solution regeneration channel with the energy tower 4 through the fifth circulation loop 14, ensuring the solution regeneration process.
[0042] The controller 6 is electrically connected to the meteorological data interface 15, the temperature sensor 16, and the solution concentration sensor 11 for real-time monitoring of the system status and intelligent control. The temperature sensor 16 is located inside the energy tower 4 to monitor the temperature of the energy tower.
[0043] The phase change heat storage device 3 is filled with paraffin-based composite phase change material, which can release the stored heat.
[0044] An adjustable ventilator 18 is installed on the top of the energy tower 4. Its opening is adjusted by the controller 6 to control the ventilation inside the energy tower, thereby affecting the heat exchange efficiency.
[0045] The regeneration device 5 is equipped with a multi-stage plate heat exchanger 7. The high-temperature side is connected to the outlet pipe of the solar collector 2, and the low-temperature side is connected to the dilute solution return pipe of the energy tower 4 to improve the utilization efficiency of thermal energy.
[0046] The controller 6 includes a machine learning unit that optimizes the heat source allocation strategy using historical operating data. When solar irradiance is below a set threshold, the controller will activate the phase change thermal storage device 3 in advance to release heat, ensuring that the system can still operate stably when solar energy is insufficient.
[0047] In summary, this system achieves highly efficient and energy-saving cooling and heating functions through the coordinated operation of solar collectors, phase change thermal storage devices, energy towers, and regeneration devices, and optimizes operating strategies through intelligent control to adapt to different environmental conditions.
[0048] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0049] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.
[0050] 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 refrigeration and heating system employing an energy-saving and carbon-reducing absorption chiller, characterized in that: It includes an absorption unit (1), a solar collector (2), a phase change thermal storage device (3), an energy tower (4), a regeneration device (5), and a controller (6); The absorption unit (1) consists of an absorber (1-1), an evaporator (1-2), a regenerator (1-3), and a condenser (1-4). The regenerator (1-3) is connected to the solar collector (2) and the phase change heat storage device (3) through a first circulation loop (8). The solar collector (2) and the phase change heat storage device (3) are connected in parallel to form a dual heat source input structure. The energy tower (4) is connected to the evaporator (1-2) through the second circulation loop (9), and the second circulation loop (9) is equipped with a solution concentration sensor (11) and a variable frequency circulation pump (12); the energy tower (4) is connected in series with the absorber (1-1) and the condenser (1-4) through the third circulation loop (10), and the third circulation loop (10) is connected in parallel with the second circulation loop (9), and the tail end of the third circulation loop (10) is located before the circuit of the variable frequency circulation pump (12); The regeneration device (5) is connected to the solar collector (2) through the fourth circulation loop (13) and forms a solution regeneration channel with the energy tower (4) through the fifth circulation loop (14); The controller (6) is electrically connected to the meteorological data interface (15), the temperature sensor (16) and the solution concentration sensor (11), and the temperature sensor (16) is located inside the energy tower (4).
2. A refrigeration and heating system using an energy-saving and carbon-reducing absorption chiller unit according to claim 1, characterized in that: The phase change thermal storage device (3) is filled with paraffin-based composite phase change material.
3. A refrigeration and heating system using an energy-saving and carbon-reducing absorption chiller as described in claim 1, characterized in that: An adjustable wind cap (18) is installed on the top of the energy tower (4), and its opening degree is adjusted by the controller (6).
4. A refrigeration and heating system using an energy-saving and carbon-reducing absorption chiller as described in claim 1, characterized in that: The regeneration device (5) is equipped with a multi-stage plate heat exchanger (7). The high-temperature side of the multi-stage plate heat exchanger (7) is connected to the outlet pipeline of the solar collector (2), and the low-temperature side is connected to the dilute solution return pipeline of the energy tower (4).
5. A refrigeration and heating system using an energy-saving and carbon-reducing absorption chiller unit according to claim 1, characterized in that: The controller (6) includes a machine learning unit that optimizes the heat source ratio strategy through historical operating data. When the solar irradiance is lower than the set threshold, the phase change thermal storage device (3) is activated in advance to release heat.
6. A refrigeration and heating system using an energy-saving and carbon-reducing absorption chiller as described in claim 1, characterized in that: The second circulation loop (9) is provided with a first switching valve (19) at both the beginning and end, the third circulation loop (10) is provided with a second switching valve (20) at both the beginning and end, the fourth circulation loop (13) is provided with a third switching valve (21) at both the beginning and end, and the fifth circulation loop (14) is provided with a fourth switching valve (17) at both the beginning and end. Meanwhile, the second circulation loop (9) and the third circulation loop (10) are provided with extended pipelines and auxiliary switching valves.