CN109579106B - Heating system based on multi-temperature-zone mixed water tank - Google Patents
Heating system based on multi-temperature-zone mixed water tank Download PDFInfo
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- CN109579106B CN109579106B CN201811380364.1A CN201811380364A CN109579106B CN 109579106 B CN109579106 B CN 109579106B CN 201811380364 A CN201811380364 A CN 201811380364A CN 109579106 B CN109579106 B CN 109579106B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/18—Hot-water central heating systems using heat pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
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Abstract
According to the heating system based on the multi-temperature-zone mixed water tank, the mixed water tank can be divided into a high-temperature zone, a medium-temperature zone and a low-temperature zone, the low-temperature zone is heated by the air source heat pump unit, the medium-temperature zone is heated by the water source heat pump unit to form step heating, and the hot water outlet temperature is more stable. The waste heat recovery of the low-grade heat source is carried out by adopting a plate heat exchanger and water source heat pump unit combined mode aiming at the low-temperature sewage at 25 ℃ of the process production line, the waste heat recovery of the high-grade heat source is directly carried out by adopting the plate heat exchanger aiming at the high-temperature sewage pipeline at 85 ℃ of the process production line, the waste heat recovery efficiency is high, and the overall efficiency of the heat supply system is high. The cold water tank is used for storing cold water as make-up water of the mixed water tank, the hot water tank is used for storing a large amount of hot water as a heating medium used by the heating system in the daytime during the night valley electricity low price period, the poor supply and demand of a power grid at night is balanced, and the operating cost of the heating system is saved.
Description
Technical Field
The invention belongs to the field of thermal energy engineering, relates to a heat supply system, and particularly relates to a heat supply system based on a multi-temperature-zone mixed water tank.
Background
Currently, the main problems of low utilization efficiency, poor economic benefit and high ecological environment pressure still exist in energy utilization in China, and energy conservation, emission reduction, energy consumption reduction and energy comprehensive utilization rate improvement are important contents of energy development strategy planning, are fundamental ways for solving energy problems in China and are in a priority development status. The aims of realizing energy conservation and emission reduction and improving the energy utilization rate mainly depend on the industrial field. The industrial waste heat recycling is a great measure for energy conservation and emission reduction of industrial and mining enterprises, the energy-saving space is large, and the waste heat can be effectively utilized to create greater benefit for the enterprises. Industrial waste heat recovery measures developed by industrial and mining enterprises mainly aim at high-grade industrial waste heat, and heat of the high-grade industrial waste heat is directly recovered through a heat exchanger, while low-grade industrial waste heat is mostly directly abandoned.
The heat pump is a high-efficiency energy-saving device which fully utilizes low-grade heat energy, the air source heat pump is a form of the heat pump, and heat flows from low-grade heat source air to a high-grade heat source by utilizing high-grade electric energy. The water source heat pump is another form of heat pump, and absorbs low-grade heat energy resources from underground water, rivers, lakes or sewage pools and the like, and realizes the transfer of low-grade heat energy to high-grade heat energy through inputting a small amount of high-grade electric energy. In winter, the water source heat pump unit has better heating effect due to lower air temperature and higher water temperature, and the outlet water temperature of the condenser is higher than that of the air source heat pump unit. Therefore, a two-stage heating mode can be formed by the air source heat pump unit and the water source heat pump unit, the temperature of a heating medium is gradually increased, the water source heat pump unit can also recover low-grade industrial waste heat discharged from a process production line, and the economy of a heating system is improved by combining the modes of hot water tank heat storage and the like.
Disclosure of Invention
The invention aims to provide a heating system based on a multi-temperature-zone mixed water tank, high-grade industrial waste heat and low-grade industrial waste heat of a process production line are respectively recycled through a plate heat exchanger and a water source heat pump unit, and a two-stage heating mode of an air source heat pump unit and the water source heat pump unit is adopted, so that the stability of the outlet water temperature is ensured, the integral energy saving rate of the heating system is improved, and meanwhile, the application of a cold water tank and a hot water tank is combined, so that on one hand, cold water stored in the cold water tank is used as a spare heating medium for supplementing the heating system, on the other hand, hot water stored in the hot water tank is used as a heating medium used by the heating system in the.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a heating system based on mixed water tank of multi-temperature-zone which characterized in that: the interior of the box body of the mixed water tank is divided by a middle-high temperature zone baffle and a middle-low temperature zone baffle, the mixed water tank can be divided into a high-temperature zone, a middle-temperature zone and a low-temperature zone, and a channel for overflowing hot water is reserved between the tops of the middle-high temperature zone baffle and the middle-low temperature zone baffle and the top of the box body;
the high-temperature area of the mixed water tank is connected with a first hot water supply pump, a hot water supply pump and a second butterfly valve; the first water supply pump is connected with the office heating tail end, and the office heating tail end is connected with the low-temperature area of the mixed water tank; the hot water supply pump is connected with a hot water tank, the hot water tank is connected with a first butterfly valve, the first butterfly valve and a second butterfly valve are connected with a second hot water supply pump, the second hot water supply pump is connected with a process production line, and a water outlet pipeline of the process production line is divided into three paths which are respectively connected with a first water discharge pump, a second water discharge pump (19) and a fourth circulating water pump;
the first drainage pump is connected with the first plate heat exchanger, a water outlet pipeline on the same side of the first plate heat exchanger is connected with sewage treatment equipment, a water outlet pipeline on the opposite side of the first plate heat exchanger is connected with a third circulating water pump, the third circulating water pump is connected with an evaporator of the water source heat pump unit, the evaporator of the water source heat pump unit is connected with a water inlet pipeline on the opposite side of the first plate heat exchanger, a water outlet pipeline of a condenser of the water source heat pump unit is connected with a medium temperature area of a mixed water tank, the medium temperature area of the mixed water tank is connected with a second circulating water pump, and the second circulating water pump is connected with a condenser of the water source heat pump unit;
the second drainage pump is connected with a second plate heat exchanger, a water outlet pipeline on the same side of the second plate heat exchanger is connected with sewage treatment equipment, a water outlet pipeline on the different side of the second plate heat exchanger is connected with a low-temperature region of the mixed water tank, and a water inlet pipeline on the different side of the second plate heat exchanger is connected with a third butterfly valve;
the fourth circulating water pump is connected with the low-temperature area of the mixed water tank;
the air source heat pump unit is connected with the low-temperature area of the mixing water tank, the low-temperature area of the mixing water tank is connected with the first circulating water pump, and the first circulating water pump is connected with the air source heat pump unit;
the water purification treatment equipment is connected with a water replenishing pump, the water replenishing pump is respectively connected with a third butterfly valve and a fourth butterfly valve, the fourth butterfly valve is connected with a cold water tank, the cold water tank is connected with a cold water feed pump, and the cold water feed pump is connected with the low-temperature region of the mixed water tank.
The outlet water temperature of the air source heat pump unit is 35 ℃, low-temperature water in a low-temperature area of the mixing water tank is continuously heated, and heated hot water overflows to a medium-temperature area from a channel at the upper part of a baffle of the medium-temperature and low-temperature area.
The outlet water temperature of the condenser of the water source heat pump unit is 45 ℃, the medium-temperature water in the medium-temperature area of the mixed water tank is continuously heated, and the heated hot water overflows to the high-temperature area from a channel at the upper part of the baffle of the medium-temperature area.
The water outlet pipeline of the process production line connected with the first drainage pump is a sewage pipeline, and the water outlet temperature is 25 ℃.
The water outlet pipeline of the process production line connected with the second drainage pump is a sewage pipeline, and the water outlet temperature is 85 ℃.
Compared with the prior art, the invention has the beneficial effects that:
according to the heat supply system based on the multi-temperature-zone mixed water tank, the waste heat recovery of the low-grade heat source is carried out by adopting the plate heat exchanger and the water source heat pump unit combination mode aiming at the low-temperature sewage at 25 ℃ in the process production line, the waste heat recovery of the high-grade heat source is directly carried out by adopting the plate heat exchanger aiming at the high-temperature sewage at 85 ℃ in the process production line, and the waste heat resources at different temperatures adopt different recovery modes, so that the waste heat recovery efficiency and the overall efficiency of the heat supply system are improved.
Furthermore, a mixed water tank with multiple temperature zones is used for storing and conveying the heating medium, the mixed water tank is divided into a high-temperature zone, a medium-temperature zone and a low-temperature zone by a middle-high temperature zone baffle and a middle-low temperature zone baffle, the low-temperature zone of the mixed water tank is heated to 35 ℃ by an air source heat pump unit, the medium-temperature zone of the mixed water tank is heated to 45 ℃ by a water source heat pump unit, a step heating mode is formed, the outlet water temperature of the heating medium is more stable, and the heating efficiency is higher.
Further, adopt the cold water jar to store cold water as the make-up water of mixing water tank, adopt the hot-water cylinder can store a large amount of hot water as the heat medium that heating system used daytime during the low price of valley electricity night, balanced the electric wire netting supply and demand drop night, practiced thrift heating system's working costs, and then improved heating system operation's economic nature, simultaneously, the cold water jar carries out the make-up water and the working mode that the hot-water cylinder deposited water more can guarantee the water balance of mixing water tank inside.
Drawings
FIG. 1 is a schematic diagram of a heating system based on a multi-temperature-zone mixed water tank according to the present invention;
FIG. 2 is a schematic diagram of a mixed water tank of a heating system based on a multi-temperature-zone mixed water tank according to the present invention;
the system comprises a hot water tank 1, a cold water tank 2, a cold water feed pump 3, a first circulating water pump 4, an office heating terminal 5, a first butterfly valve 6, a hot water feed pump 7, a first hot water feed pump 8, a second butterfly valve 9, a second hot water feed pump 10, a mixed water tank 11, a box 111, a high-temperature zone 112, a middle-high temperature zone baffle 113, a middle-high temperature zone 114, a middle-low temperature zone baffle 115, a low-temperature zone 116, a second circulating water pump 12, a water source heat pump unit 13, a process production line 14, a third circulating water pump 15, a first plate heat exchanger 16, a first water discharge pump 17, a second plate heat exchanger 18, a second water discharge pump 19, a fourth circulating water pump 20, a water purification unit 21, a sewage treatment unit 22, a water replenishing pump 23, a third butterfly valve 24, an air source heat pump unit 25 and a fourth butterfly valve 26.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The general concept of the invention is: aiming at waste heat resources of process production lines with different temperatures, different recovery modes are adopted, the waste heat recovery efficiency and the overall efficiency of a heating system are improved, a mixed water tank of a multi-temperature area is adopted for storing and conveying a heating medium, an air source heat pump unit is adopted for heating in a low-temperature area, a water source heat pump unit is adopted for heating in a medium-temperature area, a step heating mode is formed, the outlet water temperature of the heating medium is more stable, the heating efficiency is higher, and hot water is stored in a hot water tank in a valley electricity low-price period.
For a detailed description of the technical contents and the construction and objects of the present invention, reference will now be made to the accompanying drawings.
As can be seen from fig. 1 and 2, a heating system based on a multi-temperature-zone mixed water tank is characterized in that: the interior of a box body 111 of the mixed water tank 11 is divided by a middle-high temperature zone baffle 113 and a middle-low temperature zone baffle 115, the mixed water tank can be divided into a high temperature zone 112, a middle temperature zone 114 and a low temperature zone 116, and overflow hot water channels are reserved between the tops of the middle-high temperature zone baffle 113 and the middle-low temperature zone baffle 115 and the top of the box body 4;
the high-temperature area 112 of the mixed water tank 11 is connected with the first hot water supply pump 8, the hot water supply pump 7 and the second butterfly valve 9; the first water supply and heating pump 8 is connected with the office heating terminal 5, and the office heating terminal 5 is connected with the low-temperature area 116 of the mixed water tank 11; the hot water supply pump 7 is connected with the hot water tank 1, the hot water tank 1 is connected with the first butterfly valve 6, the first butterfly valve 6 and the second butterfly valve 9 are connected with the second hot water supply pump 10, the second hot water supply pump 10 is connected with the process production line 14, a water outlet pipeline of the process production line 14 is divided into three paths, and the three paths are respectively connected with the first water discharge pump 17, the second water discharge pump 19 and the fourth water circulation pump 20;
the first water discharge pump 17 is connected with the first plate heat exchanger 16, a water outlet pipeline on the same side of the first plate heat exchanger 16 is connected with the sewage treatment device 22, a water outlet pipeline on the opposite side of the first plate heat exchanger 16 is connected with the third circulating water pump 15, the third circulating water pump 15 is connected with an evaporator of the water source heat pump unit 13, the evaporator of the water source heat pump unit 13 is connected with a water inlet pipeline on the opposite side of the first plate heat exchanger 16, a water outlet pipeline of a condenser of the water source heat pump unit 13 is connected with the middle temperature area 114 of the mixed water tank 11, the middle temperature area 114 of the mixed water tank 11 is connected with the second circulating water pump 12, and the second circulating water pump 12 is connected with a condenser of the water source heat pump;
the second drainage pump 19 is connected with the second plate heat exchanger 18, the water outlet pipeline on the same side of the second plate heat exchanger 18 is connected with the sewage treatment equipment 22, the water outlet pipeline on the different side of the second plate heat exchanger 18 is connected with the low-temperature area 116 of the mixed water tank 11, and the water inlet pipeline on the different side of the second plate heat exchanger 18 is connected with the third butterfly valve 24;
the fourth circulating water pump 20 is connected to the low temperature region 116 of the mixed water tank 11;
the air source heat pump unit 25 is connected with the low-temperature area 116 of the mixing water tank 11, the low-temperature area 116 of the mixing water tank 11 is connected with the first circulating water pump 4, and the first circulating water pump 4 is connected with the air source heat pump unit 25;
the water purification treatment device 21 is connected with a water replenishing pump 23, the water replenishing pump 23 is respectively connected with a third butterfly valve 24 and a fourth butterfly valve 26, the fourth butterfly valve 26 is further connected with the cold water tank 2, the cold water tank 2 is further connected with a cold water feed pump 3, and the cold water feed pump 3 is further connected with a low temperature region 116 of the mixed water tank 11.
The outlet water temperature of the air source heat pump unit 25 is 35 ℃, the low-temperature water in the low-temperature area 116 of the mixed water tank 11 is continuously heated, and the heated hot water overflows to the medium-temperature area 114 from a channel at the upper part of the middle-temperature and low-temperature area baffle 115; the outlet water temperature of the condenser of the water source heat pump unit 13 is 45 ℃, the medium-temperature water in the medium-temperature area 114 of the mixed water tank 11 is continuously heated, and the heated hot water overflows to the high-temperature area 112 from a channel at the upper part of the medium-temperature area baffle 113; the water outlet pipeline of the process production line 14 connected with the first water discharge pump 7 is a sewage pipeline, and the water outlet temperature is 25 ℃; the water outlet pipeline of the process production line 14 connected with the second drainage pump 19 is a sewage pipeline, and the water outlet temperature is 85 ℃.
The specific implementation process of the invention is as follows:
a heating system based on a multi-temperature-zone mixed water tank is characterized in that a first circulating water pump 4 drives low-temperature water in a low-temperature zone 116 of the mixed water tank 11 to an air source heat pump unit 25, the air source heat pump unit 25 absorbs heat from the low-temperature air to heat the low-temperature water, the low-temperature water is heated to 35 ℃ and then flows back to the low-temperature zone 116 of the mixed water tank 11, the high-temperature hot water rises due to the fact that the density of the high-temperature hot water is reduced, and the high-temperature hot water overflows to a medium-temperature zone 114 of the mixed water; the second circulating water pump 12 drives the medium temperature water in the medium temperature region 114 of the mixed water tank 11 to the condenser of the water source heat pump unit 13, the condenser of the water source heat pump unit 13 heats the medium temperature water, the medium temperature water is heated to 45 ℃ and then flows back to the medium temperature region 114 of the mixed water tank 11, and the hot water with higher temperature rises due to the fact that the density becomes lower and overflows to the high temperature region 112 of the mixed water tank 11 through a channel above the medium temperature region baffle 113.
The first hot water supply pump 8 drives the high-temperature water in the high-temperature region 112 of the mixed water tank 11 to the office heating terminal 5 for heat release, so as to realize office heating, and then the high-temperature water flows back to the low-temperature region 116 of the mixed water tank 11 to be heated.
When the heat supply system only supplies heat to the process production line 14 and does not store heat, the first butterfly valve 6 is closed, the second butterfly valve 9 is opened, the third butterfly valve 24 is opened, and the fourth butterfly valve 26 is closed; the second hot water supply pump 10 drives the high-temperature water in the high-temperature area 112 of the mixed water tank 11 to the process production line 14, and the high-temperature water is divided into three paths and discharged after the process production line 14 participates in production.
The first drainage pump 17 drives the low-temperature sewage of 25 ℃ in the process production line 14 to enter the first plate heat exchanger 16 for heat release and then flow into the sewage treatment device 22, the medium in the pipeline on the different side of the first plate heat exchanger 16 is heated and then is driven by the third circulating water pump 15 to the evaporator of the water source heat pump unit 13 for heat release, the heat released medium flows back to the first plate heat exchanger 16, the evaporator side of the water source heat pump unit 13 absorbs the heat of the low-temperature medium, and the high-temperature heat medium is produced on the condenser side of the water source heat pump unit 13.
The second drainage pump 19 drives the high-temperature sewage at 85 ℃ in the process production line 14 to enter the second plate heat exchanger 18 for heat release, then the sewage flows into the sewage treatment device 22, the purified water in the pipeline at the opposite side of the second plate heat exchanger 18 is heated, and then the purified water is driven by the water replenishing pump 23 to the low-temperature area 116 of the mixed water tank 11 to be heated again, wherein the purified water is produced after being treated by the purified water treatment device 22 for tap water.
The fourth circulating water pump 20 drives the purified water discharged from the process line 14 to flow back to the low temperature region 116 of the mixed water tank 11 to be heated again.
When the heating system needs to store cold water, the fourth butterfly valve 26 is opened, and the water replenishing pump 23 drives the purified water from the purified water treatment device 22 to the cold water tank 2 for storage.
When the heating system needs to store hot water during the night off-peak electricity low price period, the hot water feed pump 7 drives the hot water in the high temperature region 112 of the mixed water tank 11 to the hot water tank 1 for storage, at this time, the mixed water tank 11 needs additional water supply, and the cold water feed pump 3 drives the water stored in the cold water tank 2 to the low temperature region 116 of the mixed water tank 11. In daytime, the first butterfly valve 6 is opened, and hot water in the hot water tank 1 is driven to the process production line 14 by the second hot water supply pump 10 to participate in production.
Claims (5)
1. The utility model provides a heating system based on mixed water tank of multi-temperature-zone which characterized in that: the interior of a box body (111) of the mixed water tank (11) is separated by a middle-high temperature zone baffle (113) and a middle-low temperature zone baffle (115), the mixed water tank can be divided into a high temperature zone (112), a middle-high temperature zone (114) and a low temperature zone (116), and overflow hot water channels are reserved between the tops of the middle-high temperature zone baffle (113) and the middle-low temperature zone baffle (115) and the top of the box body (4); the height of the middle-high temperature zone baffle (113) is higher than that of the middle-low temperature zone baffle (115);
the top of the high-temperature area (112) of the mixed water tank (11) is connected with a first hot water supply pump (8), a hot water supply pump (7) and a second butterfly valve (9); the first water supply pump (8) is connected with an office heating terminal (5), and the office heating terminal (5) is connected with a low-temperature area (116) of the mixed water tank (11); the hot water supply pump (7) is connected with the hot water tank (1), the hot water tank (1) is connected with the first butterfly valve (6), the first butterfly valve (6) and the second butterfly valve (9) are connected with the second water supply pump (10), the second water supply pump (10) is connected with the process production line (14), a water outlet pipeline of the process production line (14) is divided into three paths, and the three paths are respectively connected with the first water discharge pump (17), the second water discharge pump (19) and the fourth water circulation pump (20);
the first water discharge pump (17) is connected with the first plate heat exchanger (16), a water outlet pipeline on the same side of the first plate heat exchanger (16) is connected with the sewage treatment equipment (22), a water outlet pipeline on the opposite side of the first plate heat exchanger (16) is connected with the third circulating water pump (15), the third circulating water pump (15) is connected with an evaporator of the water source heat pump unit (13), an evaporator of the water source heat pump unit (13) is connected with a water inlet pipeline on the opposite side of the first plate heat exchanger (16), a condenser water outlet pipeline of the water source heat pump unit (13) is connected with a medium temperature area (114) of the mixed water tank (11), the medium temperature area (114) of the mixed water tank (11) is connected with the second circulating water pump (12), and the second circulating water pump (12) is connected with a condenser of the water source heat pump unit (13); the first drainage pump (17) drives low-temperature sewage of the process production line (14) to enter the first plate heat exchanger (16) for heat release;
the second drainage pump (19) is connected with the second plate heat exchanger (18), a water outlet pipeline on the same side of the second plate heat exchanger (18) is connected with the sewage treatment equipment (22), a water outlet pipeline on the different side of the second plate heat exchanger (18) is connected with the low-temperature area (116) of the mixed water tank (11), and a water inlet pipeline on the different side of the second plate heat exchanger (18) is connected with the third butterfly valve (24);
the fourth circulating water pump (20) is connected with the low-temperature area (116) of the mixed water tank (11);
the air source heat pump unit (25) is connected with the low-temperature area (116) of the mixing water tank (11), the low-temperature area (116) of the mixing water tank (11) is connected with the first circulating water pump (4), and the first circulating water pump (4) is connected with the air source heat pump unit (25);
the low-temperature water in the low-temperature area (116) of the mixed water tank (11) is continuously heated by the air source heat pump unit (25), the heated hot water overflows to the medium-temperature area (114) from a channel at the upper part of the middle-temperature area baffle (115), the medium-temperature water in the medium-temperature area (114) of the mixed water tank (11) is continuously heated by the condenser of the water source heat pump unit (13), and the heated hot water overflows to the high-temperature area (112) from a channel at the upper part of the middle-temperature area baffle (113);
the water purification treatment equipment (21) is connected with a water replenishing pump (23), the water replenishing pump (23) is respectively connected with a third butterfly valve (24) and a fourth butterfly valve (26), the fourth butterfly valve (26) is connected with a cold water tank (2), the cold water tank (2) is connected with a cold water feed pump (3), and the cold water feed pump (3) is connected with a low-temperature area (116) of the mixed water tank (11).
2. The heating system based on the multi-temperature-zone mixed water tank as claimed in claim 1, wherein: the water outlet temperature of the air source heat pump unit (25) is 35 ℃, low-temperature water in a low-temperature area (116) of the mixing water tank (11) is continuously heated, and heated hot water overflows to a medium-temperature area (114) from a channel at the upper part of a baffle (115) of the medium-temperature and low-temperature area.
3. The heating system based on the multi-temperature-zone mixed water tank as claimed in claim 1, wherein: the outlet water temperature of the condenser of the water source heat pump unit (13) is 45 ℃, the medium-temperature water in the medium-temperature area (114) of the mixing water tank (11) is continuously heated, and the heated hot water overflows to the high-temperature area (112) from a channel at the upper part of the medium-temperature area baffle (113).
4. The heating system based on the multi-temperature-zone mixed water tank as claimed in claim 1, wherein: the water outlet pipeline of the process production line (14) connected with the first drainage pump (7) is a sewage pipeline, and the water outlet temperature is 25 ℃.
5. The heating system based on the multi-temperature-zone mixed water tank as claimed in claim 1, wherein: the water outlet pipeline of the process production line (14) connected with the second drainage pump (19) is a sewage pipeline, and the water outlet temperature is 85 ℃.
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| CN201246924Y (en) * | 2008-06-23 | 2009-05-27 | 昆明铁路局科学技术研究所 | Air source heat pump and middle and high temperature water source heat pump combining heating apparatus |
| CN101482291B (en) * | 2009-02-06 | 2010-06-09 | 深圳市得益节能科技有限公司 | Open type dynamic circulating water heat accumulation apparatus |
| CN102563894B (en) * | 2012-02-23 | 2014-01-01 | 北京建筑工程学院 | Sanitary wastewater surplus heat utilization system |
| CN203893284U (en) * | 2014-04-01 | 2014-10-22 | 中天同圆太阳能高科技有限公司 | Heating system |
| CN203810533U (en) * | 2014-04-28 | 2014-09-03 | 中国建筑西北设计研究院有限公司 | All-weather solar energy supply device |
| CN104501422A (en) * | 2014-11-25 | 2015-04-08 | 苏州路路顺机电设备有限公司 | Multi-functional water tank |
| KR101851230B1 (en) * | 2017-04-19 | 2018-04-23 | (주)월드이엔씨 | High efficiency absorption type heat pump system with increasing function for utilization rate from waste heat |
| CN207112961U (en) * | 2017-08-04 | 2018-03-16 | 中能信创（北京）售电有限公司 | The heating system that a kind of residual heat of condensed water couples with waste water residual heat |
| CN108716771B (en) * | 2018-06-07 | 2023-05-19 | 威海双信节能环保设备有限公司 | Industrial wastewater waste heat cascade heat work conversion device and method |
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