Reclaimed water large-temperature-difference heat supply system
By adopting a large temperature difference heating system for reclaimed water in the heating system and using heat pump units, heat exchangers and gas heat pumps, the problem of low energy utilization in traditional heating systems is solved, and efficient utilization of reclaimed water energy is achieved, improving energy utilization and reducing energy waste.
Patent Information
- Application Number
- CN202422170386.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-04
AI Technical Summary
The low energy utilization rate in traditional heating systems leads to energy loss and waste.
The large temperature difference heating system of recycled water is adopted, including heat pump units, heat exchangers and gas heat pumps. Through the design of recycled water circulation pipelines and heat exchange circulation pipelines, the low-grade energy in recycled water is maximized and the energy utilization rate is improved.
The efficient use of low-grade energy in the reclaimed water has been achieved, energy utilization has been improved, energy waste has been reduced, and other energy tensions have been alleviated.
Smart Images
Figure CN223036490U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of heating, and specifically relates to a medium water large temperature difference heating system. Background Art
[0002] At present, the utilization rate of medium water energy is relatively low. In traditional heating systems, only low-temperature water can be supplied, and there are problems such as energy loss and waste during the use of low-temperature water. Content of the Utility Model
[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a medium water large temperature difference heating system, which solves the technical problems such as low energy utilization rate in traditional heating systems.
[0004] To solve the above problems, the technical solution of the utility model is: a medium water large temperature difference heating system, including a heat pump unit, a heat exchanger and a gas heat pump;
[0005] The heat pump unit is connected with a medium water circulation pipeline, in which medium water flows. The heat pump unit is connected with the heat exchanger through a first heat exchange circulation pipeline, and a first heat exchange medium flows inside the first heat exchange circulation pipeline; the heat pump unit is used to transfer the heat of the medium water to the first heat exchange medium;
[0006] The heat exchanger is connected with a first heating circulation branch pipeline, in which a heating medium flows. The first heating circulation branch pipeline is connected with a heating circulation pipeline, in which a heating medium flows. The heating circulation pipeline is used to supply heat to users; the heat exchanger is used to transfer the heat of the first heat exchange medium in the first heat exchange circulation pipeline to the heating medium;
[0007] The gas heat pump is connected with a second heating circulation branch pipeline, in which a heating medium flows. The second heating circulation branch pipeline is connected with the heating circulation pipeline. The first heating circulation branch pipeline and the second heating circulation branch pipeline are in parallel;
[0008] The gas heat pump is connected with the low-temperature pipe of the first heat exchange circulation pipeline through a second heat exchange circulation pipeline, and a first heat exchange medium flows inside the second heat exchange circulation pipeline; the gas heat pump is used to transfer the heat of the first heat exchange medium in the second heat exchange circulation pipeline to the heating medium.
[0009] Optionally, a valve is arranged on the low-temperature pipe of the first heat exchange circulation pipeline, and the valve is located between the two connection points of the second heat exchange circulation pipeline and the low-temperature pipe.
[0010] Optionally, the temperature of the medium water flowing into the heat pump unit in the medium water circulation pipeline is 12 °C, and the temperature of the medium water flowing out of the heat pump unit in the medium water circulation pipeline is 5 °C.
[0011] Optionally, the temperature of the first heat exchange medium flowing out of the heat pump unit in the first heat exchange circulation pipeline is 55 °C, the temperature of the first heat exchange medium flowing from the first heat exchange circulation pipeline into the second heat exchange circulation pipeline is 38 °C, and the temperature of the first heat exchange medium flowing from the second heat exchange circulation pipeline into the first heat exchange circulation pipeline is 34 °C.
[0012] Optionally, the temperature of the heating medium flowing from the first heating circulation branch pipeline and the second heating circulation branch pipeline into the heating circulation pipeline is 45 °C, and the temperature of the heating medium flowing from the heating circulation pipeline into the first heating circulation branch pipeline and the second heating circulation branch pipeline is 35 °C.
[0013] Optionally, it further includes a control cabinet which has a power distribution system, and the heat pump unit, the heat exchanger and the gas heat pump are all electrically connected to the power distribution system.
[0014] Optionally, the heat exchanger is a plate heat exchanger.
[0015] Optionally, the first heat exchange medium is water.
[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0017] During the heating process, the present utility model uses reclaimed water for heating instead of fresh water, which not only alleviates the shortage of other energy sources, reduces the dependence on traditional energy sources, but also helps to achieve a virtuous cycle of the water ecosystem, saves water resources, reduces energy waste, and has high operating efficiency. The large temperature difference technology system can extract the low-grade energy in the reclaimed water to the greatest extent, increase the energy utilization rate of the system operation, and reduce energy waste. Description of the Drawings
[0018] Figure 1 It is a connection schematic diagram of the reclaimed water large temperature difference heating system in the embodiment.
[0019] Reference numerals: 10, heat pump unit; 20, heat exchanger; 30, gas heat pump; 40, reclaimed water circulation pipeline; 41, first heat flow pipe; 42, first cold flow pipe; 50, first heat exchange circulation pipeline; 51, valve; 52, second heat flow pipe; 53, second cold flow pipe; 60, second heat exchange circulation pipeline; 61, third heat flow pipe; 62, third cold flow pipe; 70, first heating circulation branch pipeline; 71, fourth heat flow pipe; 72, fourth cold flow pipe; 80, second heating circulation branch pipeline; 81, fifth heat flow pipe; 82, fifth cold flow pipe; 90, heating circulation pipeline; 91, sixth heat flow pipe; 92, sixth cold flow pipe; 100, control cabinet. Detailed Embodiment
[0020] The present utility model will be further described in detail below in conjunction with the drawings and embodiments.
[0021] Example: As shown in Figure 1 the figure, this embodiment provides a medium-temperature water large-temperature-difference heating system, including a heat pump unit 10, a heat exchanger 20, and a gas heat pump 30; the heat pump unit 10 is connected to a medium-water circulation pipeline 40, in which medium water flows; the heat pump unit 10 and the heat exchanger 20 are connected through a first heat exchange circulation pipeline 50, and a first heat exchange medium flows inside the first heat exchange circulation pipeline 50; the heat pump unit 10 is used to transfer the heat of the medium water to the first heat exchange medium; the heat exchanger 20 is connected to a first heating circulation branch pipeline 70, in which a heating medium flows, the first heating circulation branch pipeline 70 is connected to a heating circulation pipeline 90, in which a heating medium flows, and the heating circulation pipeline 90 is used to supply heat to users; the heat exchanger 20 is used to transfer the heat of the first heat exchange medium in the first heat exchange circulation pipeline 50 to the heating medium; the gas heat pump 30 is connected to a second heating circulation branch pipeline 80, in which a heating medium flows, the second heating circulation branch pipeline 80 is connected to the heating circulation pipeline 90, and the first heating circulation branch pipeline 70 and the second heating circulation branch pipeline 80 are in parallel; the gas heat pump 30 is connected to the low-temperature pipe of the first heat exchange circulation pipeline 50 through a second heat exchange circulation pipeline 60, and a first heat exchange medium flows inside the second heat exchange circulation pipeline 60; the gas heat pump 30 is used to transfer the heat of the first heat exchange medium in the second heat exchange circulation pipeline 60 to the heating medium.
[0022] Through the above settings, during the heating process, using medium water for heating instead of fresh water not only alleviates the shortage of other energy sources, reduces the dependence on traditional energy sources, but also helps to achieve a virtuous cycle of the water ecosystem, saves water resources, reduces energy waste, and has high operating efficiency. The heat pump unit 10 is used to increase the temperature difference between the supply water and the return water. By increasing the temperature difference between the supply water and the return water under the condition of constant flow rate, the heating load is increased, thereby increasing the heating area, improving the utilization rate of the system, and reducing energy waste. The large-temperature-difference technology is adopted to maximize the extraction of low-grade energy in the medium water, realizing an increase in the energy utilization rate of the system operation and reducing waste.
[0023] In a medium-water large-temperature-difference heating system of this embodiment, a valve 51 is provided on the low-temperature pipe of the first heat exchange circulation pipeline 50, and the valve 51 is located between the two connection points of the second heat exchange circulation pipeline 60 and the low-temperature pipe of the first heat exchange circulation pipeline 50. The valve 51 can adjust the flow rate, and the valve 51 needs to be closed when the gas heat pump 30 is started.
[0024] In a medium-water large-temperature-difference heating system of this embodiment, the temperature of the medium water flowing into the heat pump unit 10 in the medium-water circulation pipeline 40 is 12 °C, and the temperature of the medium water flowing out of the heat pump unit 10 in the medium-water circulation pipeline 40 is 5 °C.
[0025] Specifically, the intermediate water recycling pipeline 40 includes a first heat flow pipe 41 and a first cold flow pipe 42; the flow outlet of the first heat flow pipe 41 is connected to the heat pump unit 10, and the flow inlet of the first cold flow pipe 42 is connected to the heat pump unit 10.
[0026] In a large temperature difference heating system of intermediate water in this embodiment, the temperature of the first heat exchange medium flowing out of the heat pump unit 10 in the first heat exchange circulation pipeline 50 is 55°C, the temperature of the first heat exchange medium flowing from the first heat exchange circulation pipeline 50 into the second heat exchange circulation pipeline 60 is 38°C, and the temperature of the first heat exchange medium flowing from the second heat exchange circulation pipeline 60 into the first heat exchange circulation pipeline 50 is 34°C. After being converted by the heat pump unit 10, the low-grade heat source of intermediate water can provide the first heat exchange medium at 55°C, that is, high-temperature hot water; after releasing heat through the plate heat exchanger 20 and the gas heat pump 30 to 34°C, and finally returning to the condenser of the heat pump unit 10 for heating, a closed heating circulation system is formed.
[0027] Specifically, the first heat exchange circulation pipeline 50 includes a second heat flow pipe 52 and a second cold flow pipe 53, and the second cold flow pipe 53 is also the low-temperature pipe of the first heat exchange circulation pipeline 50; the flow inlet of the second heat flow pipe 52 is connected to the heat pump unit 10, the flow outlet of the second heat flow pipe 52 is connected to the heat exchanger 20, the flow outlet of the second cold flow pipe 53 is connected to the heat pump unit 10, and the flow inlet of the second cold flow pipe 53 is connected to the heat exchanger 20.
[0028] As Figure 1 shown, the second heat exchange circulation pipeline 60 includes a third heat flow pipe 61 and a third cold flow pipe 62; the flow inlet of the third heat flow pipe 61 is connected to the second cold flow pipe 53, the flow outlet of the third heat flow pipe 61 is connected to the gas heat pump 30, the flow inlet of the third cold flow pipe 62 is connected to the gas heat pump 30, and the flow outlet of the third cold flow pipe 62 is connected to the second cold flow pipe 53.
[0029] In a large temperature difference heating system of intermediate water in this embodiment, the temperature of the heating medium flowing from the first heating circulation branch pipeline 70 and the second heating circulation branch pipeline 80 into the heating circulation pipeline 90 is 45°C, and the temperature of the heating medium flowing from the heating circulation pipeline 90 into the first heating circulation branch pipeline 70 and the second heating circulation branch pipeline 80 is 35°C.
[0030] Specifically, as Figure 1 shown, the first heating circulation branch pipeline 70 includes a fourth heat flow pipe 71 and a fourth cold flow pipe 72, the flow inlet of the fourth heat flow pipe 71 is connected to the heat exchanger 20, and the flow outlet of the fourth cold flow pipe 72 is connected to the heat exchanger 20.
[0031] The second heat supply circulation branch pipeline 80 includes a fifth hot flow pipe 81 and a fifth cold flow pipe 82. The flow inlet of the fifth hot flow pipe 81 is connected to the gas heat pump 30, and the flow outlet of the fifth cold flow pipe 82 is connected to the gas heat pump 30.
[0032] The heat supply circulation pipeline 90 includes a sixth hot flow pipe 91 and a sixth cold flow pipe 92. The flow outlets of the fourth hot flow pipe 71 and the fifth hot flow pipe 81 are both connected to the sixth hot flow pipe 91, and the flow inlets of the fourth cold flow pipe 72 and the fifth cold flow pipe 82 are both connected to the sixth cold flow pipe 92.
[0033] In a medium water large temperature difference heat supply system of this embodiment, a control cabinet 100 is further included. A power distribution system is provided in the control cabinet 100, and the heat pump unit 10, the heat exchanger 20, and the gas heat pump 30 are all electrically connected to the power distribution system.
[0034] In a medium water large temperature difference heat supply system of this embodiment, the heat exchanger 20 is a plate heat exchanger 20.
[0035] In a medium water large temperature difference heat supply system of this embodiment, the first heat exchange medium is water.
Claims
1. A large temperature difference reclaimed water heating system, characterized in that: It comprises a heat pump unit (10), a heat exchanger (20) and a gas heat pump (30); The heat pump unit (10) is connected to a grey water circulation pipeline (40), grey water flows in the grey water circulation pipeline (40), the heat pump unit (10) and the heat exchanger (20) are connected via a first heat exchange circulation pipeline (50), a first heat exchange medium flows in the first heat exchange circulation pipeline (50); the heat pump unit (10) is used to transfer heat from the grey water to the first heat exchange medium; The heat exchanger (20) is connected to a first heat supply cycle branch pipeline (70), a heat supply medium flows in the first heat supply cycle branch pipeline (70), the first heat supply cycle branch pipeline (70) is connected to a heat supply cycle pipeline (90), a heat supply medium flows in the heat supply cycle pipeline (90), and the heat supply cycle pipeline (90) is used to provide heat to users; the heat exchanger (20) is used to transfer the heat of the first heat exchange medium in the first heat exchange cycle pipeline (50) to the heat supply medium; The gas heat pump (30) is connected to a second heating cycle branch pipeline (80), a heating medium flows in the second heating cycle branch pipeline (80), the second heating cycle branch pipeline (80) is connected to the heating cycle pipeline (90), and the first heating cycle branch pipeline (70) and the second heating cycle branch pipeline (80) are connected in parallel; The gas heat pump (30) is connected to the low-temperature pipe of the first heat exchange circulation pipeline (50) via a second heat exchange circulation pipeline (60), and a first heat exchange medium flows in the second heat exchange circulation pipeline (60); the gas heat pump (30) is used to transfer the heat of the first heat exchange medium in the second heat exchange circulation pipeline (60) to the heating medium.
2. A medium-water large temperature difference heating system according to claim 1, characterized in that: A valve (51) is provided on the low-temperature pipe of the first heat exchange circulation pipeline (50), and the valve (51) is located between two connection points between the second heat exchange circulation pipeline (60) and the low-temperature pipe.
3. The large temperature difference reclaimed water heating system according to claim 1, characterized in that: The temperature of the reclaimed water flowing into the heat pump unit (10) from the reclaimed water circulation pipeline (40) is 12° C., and the temperature of the reclaimed water flowing out of the heat pump unit (10) from the reclaimed water circulation pipeline (40) is 5° C.
4. The large temperature difference reclaimed water heating system according to claim 1, characterized in that: The temperature of the first heat exchange medium flowing out of the heat pump unit (10) in the first heat exchange circulation pipeline (50) is 55° C., the temperature of the first heat exchange medium flowing from the first heat exchange circulation pipeline (50) into the second heat exchange circulation pipeline (60) is 38° C., and the temperature of the first heat exchange medium flowing from the second heat exchange circulation pipeline (60) into the first heat exchange circulation pipeline (50) is 34° C.
5. The large temperature difference reclaimed water heating system according to claim 1, characterized in that: The temperature of the heating medium flowing from the first heating circulation branch pipeline (70) and the second heating circulation branch pipeline (80) into the heating circulation pipeline (90) is 45°C, and the temperature of the heating medium flowing from the heating circulation pipeline (90) into the first heating circulation branch pipeline (70) and the second heating circulation branch pipeline (80) is 35°C.
6. The large temperature difference reclaimed water heating system according to claim 1, characterized in that: It also includes a control cabinet (100), in which a power distribution system is provided, and the heat pump unit (10), the heat exchanger (20) and the gas heat pump (30) are all electrically connected to the power distribution system.
7. The large temperature difference reclaimed water heating system according to claim 1, characterized in that: The heat exchanger (20) is a plate-type heat exchanger (20).
8. The large temperature difference reclaimed water heating system according to claim 1, characterized in that: The first heat exchange medium is water.