CN204268453U - A kind of flue gas waste heat recovery system of absorption heat pump cycle - Google Patents
A kind of flue gas waste heat recovery system of absorption heat pump cycle Download PDFInfo
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- CN204268453U CN204268453U CN201420744434.8U CN201420744434U CN204268453U CN 204268453 U CN204268453 U CN 204268453U CN 201420744434 U CN201420744434 U CN 201420744434U CN 204268453 U CN204268453 U CN 204268453U
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 239000003546 flue gas Substances 0.000 title claims abstract description 45
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 21
- 239000002918 waste heat Substances 0.000 title claims abstract description 18
- 238000011084 recovery Methods 0.000 title claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000007789 gas Substances 0.000 claims abstract description 25
- 239000006096 absorbing agent Substances 0.000 claims abstract description 15
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 230000009467 reduction Effects 0.000 abstract description 2
- 239000003507 refrigerant Substances 0.000 description 15
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 8
- 230000002745 absorbent Effects 0.000 description 6
- 239000002250 absorbent Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 239000003345 natural gas Substances 0.000 description 5
- 238000009835 boiling Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
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Abstract
本实用新型公开了一种吸收式热泵循环的烟气余热回收系统，包括燃气锅炉、空气预热器和吸收式热泵装置，所述吸收式热泵装置包括蒸发器、冷凝器、节流机构、吸收器、溶液泵、发生器和节流阀，所述吸收器、溶液泵、发生器和节流阀依次连接成一个回路，其中的发生器依次连接冷凝器、节流机构、蒸发器，最终连接至吸收器；所述蒸发器设有用于排放烟气和凝结水的排出管，冷凝器设有锅炉低温给水通道和锅炉高温给水通道，锅炉高温给水通道连接至燃气锅炉；所述燃气锅炉设有高温烟气通道和蒸汽分支通道。本实用新型与现有技术相比的优点是：提高给水的温度5-8摄氏度，降低给水在锅炉中的吸热量，以减少燃气量，达到节能减排的目的。
The utility model discloses a flue gas waste heat recovery system for an absorption heat pump cycle, which comprises a gas boiler, an air preheater and an absorption heat pump device. The absorption heat pump device includes an evaporator, a condenser, a throttling mechanism, an absorption The absorber, the solution pump, the generator and the throttle valve are connected in turn to form a circuit, and the generator is connected to the condenser, the throttling mechanism, the evaporator in turn, and finally connected to the to the absorber; the evaporator is provided with a discharge pipe for discharging flue gas and condensed water, the condenser is provided with a boiler low-temperature water supply channel and a boiler high-temperature water supply channel, and the boiler high-temperature water supply channel is connected to the gas-fired boiler; the gas-fired boiler is provided with High temperature flue gas channel and steam branch channel. Compared with the prior art, the utility model has the advantages of increasing the temperature of the feed water by 5-8 degrees Celsius, reducing the heat absorption of the feed water in the boiler, reducing the amount of gas, and achieving the purpose of energy saving and emission reduction.
Description
技术领域technical field
本实用新型涉及热量回收装置，尤其涉及一种吸收式热泵循环的烟气余热回收系统。The utility model relates to a heat recovery device, in particular to a flue gas waste heat recovery system of an absorption heat pump cycle.
背景技术Background technique
为了改变乌鲁木齐冬天燃煤供暖造成的空气污染问题，自2010年起，乌鲁木齐市启动“煤改气”工程。“煤改气”工程的实施换来乌鲁木齐的蓝天白云。目前，乌鲁木齐市主城区天山区、沙依巴克区、高新区(新市区)、水磨沟区、米东区的清洁能源供热比例已达100％，彻底实现了天然气供暖，成为全国第一个采用天然气供暖的城市。截止到2014年供暖期，共安装热水量10-100万吨燃气锅炉700余台，这些燃气锅炉通过安装尾部烟气空气预热器来吸收烟气余热，使得炉膛出口烟气温度从130-140摄氏度降低到60-65摄氏度，然后从烟囱排到大气。目前对于低品位的60-65摄氏度的烟气余热没有采用回收装置。In order to change the air pollution caused by coal-fired heating in Urumqi in winter, since 2010, Urumqi has launched a "coal-to-gas" project. The implementation of the "coal-to-gas" project has resulted in the blue sky and white clouds in Urumqi. At present, the heating ratio of clean energy in Tianshan District, Shayibake District, High-tech Zone (New District), Shuimogou District, and Midong District in the main urban area of Urumqi has reached 100%, completely realizing natural gas heating, becoming the first in the country A city heated by natural gas. As of the heating period in 2014, a total of more than 700 gas-fired boilers with a hot water capacity of 100,000 to 1 million tons have been installed. These gas-fired boilers absorb the waste heat of the flue gas by installing the tail flue gas air preheater, so that the temperature of the flue gas at the furnace outlet is from 130- 140 degrees Celsius is reduced to 60-65 degrees Celsius, and then discharged to the atmosphere from the chimney. At present, there is no recovery device for the low-grade flue gas waste heat of 60-65 degrees Celsius.
对于炉膛出口130-140摄氏度的烟气温度的回收，目前是在燃气锅炉的烟道上通过安装尾部烟气空气预热器来吸收烟气余热，从燃气锅炉炉膛排除的130-140摄氏度的高温烟气引入到烟道上安装的空气预热器，该空气预热器利用高温烟气余热加热冷空气，冷空气被加热成热空气送入炉膛燃烧器，用于和天然气混合燃烧，高温烟气放热后变成60-65度的低温烟气排入大气。For the recovery of the flue gas temperature at the furnace outlet of 130-140 degrees Celsius, at present, the flue gas air preheater is installed on the flue of the gas boiler to absorb the waste heat of the flue gas, and the high temperature flue gas at 130-140 degrees Celsius is discharged from the gas boiler furnace. The air is introduced into the air preheater installed on the flue. The air preheater uses the waste heat of the high-temperature flue gas to heat the cold air. The cold air is heated into hot air and sent to the furnace burner for mixed combustion with natural gas. The high-temperature flue gas is released After heating, the low-temperature flue gas of 60-65 degrees is discharged into the atmosphere.
在燃气锅炉的烟道上通过安装尾部烟气空气预热器来吸收烟气余热的方案缺点，只能利用温差传热的方式作为驱动力来利用余热，使得低品位的余热利用率不高，致使燃气锅炉的排烟温度不够低，存在进一步利用其他技术利用低品位的余热的空间。Disadvantages of the solution to absorb the waste heat of the flue gas by installing the tail flue gas air preheater on the flue of the gas boiler can only use the heat transfer method of temperature difference as the driving force to utilize the waste heat, which makes the utilization rate of low-grade waste heat not high, resulting in The exhaust gas temperature of gas-fired boilers is not low enough, and there is room for further utilization of low-grade waste heat by other technologies.
实用新型内容Utility model content
本实用新型是为了解决上述不足，提供了一种吸收式热泵循环的烟气余热回收系统。The utility model aims to solve the above-mentioned disadvantages, and provides an absorption heat pump cycle flue gas waste heat recovery system.
本实用新型的上述目的通过以下的技术方案来实现：一种吸收式热泵循环的烟气余热回收系统，包括燃气锅炉和空气预热器，其特征在于：还包括吸收式热泵装置，所述吸收式热泵装置包括蒸发器、冷凝器、节流机构、吸收器、溶液泵、发生器和节流阀，所述吸收器、溶液泵、发生器和节流阀依次连接成一个回路，其中的发生器依次连接冷凝器、节流机构、蒸发器，最终连接至吸收器；所述蒸发器设有用于排放烟气和凝结水的排出管，冷凝器设有锅炉低温给水通道和锅炉高温给水通道，锅炉高温给水通道连接至燃气锅炉；The above object of the utility model is achieved through the following technical solutions: an absorption heat pump circulation flue gas waste heat recovery system, including a gas boiler and an air preheater, characterized in that it also includes an absorption heat pump device, the absorption The type heat pump device includes an evaporator, a condenser, a throttling mechanism, an absorber, a solution pump, a generator, and a throttle valve, and the absorber, solution pump, generator, and throttle valve are connected in sequence to form a circuit, in which The condenser is connected to the condenser, throttling mechanism, evaporator in turn, and finally connected to the absorber; the evaporator is provided with a discharge pipe for discharging flue gas and condensed water, and the condenser is provided with a boiler low-temperature water supply channel and a boiler high-temperature water supply channel. Boiler high temperature feed water channel is connected to the gas boiler;
所述燃气锅炉设有高温烟气通道和蒸汽分支通道；The gas boiler is provided with a high-temperature flue gas channel and a steam branch channel;
所述高温烟气通道连接空气预热器，空气预热器设有冷空气进口，并设有热空气出口通道连接至燃气锅炉，同时设有低温烟气通道连接至蒸发器；The high-temperature flue gas passage is connected to an air preheater, and the air preheater is provided with a cold air inlet, a hot air outlet passage connected to the gas boiler, and a low-temperature flue gas passage connected to the evaporator;
所述蒸汽分支通道连接发生器，发生器设有凝结水通道，凝结水通道连接至锅炉高温给水通道。The steam branch channel is connected to the generator, and the generator is provided with a condensed water channel, and the condensed water channel is connected to the boiler high-temperature feed water channel.
本实用新型的工作原理为：从燃气锅炉的炉膛排出的130-140摄氏度的高温烟气引入到烟道上安装的空气预热器，该空气预热器利用高温烟气余热加热冷空气，冷空气被加热成热空气送入燃气锅炉的炉膛，用于和天然气混合燃烧，高温烟气放热后变成60-65摄氏度的低温烟气进入吸收式热泵系统中的蒸发器。吸收式热泵装置中低温低压的液态工质流经蒸发器时，从低温烟气中吸收热量蒸发成气态制冷剂工质，低温烟气放热后变成10-15摄氏度烟气和凝结水排入环境，低温低压气态制冷剂工质，进入吸收器被吸收剂吸收变成浓溶液，然后通过溶液泵进入发生器，在发生器中把锅炉汽包引入一小部分蒸汽加热，由于制冷剂和吸收剂沸点相差较大，低沸点的制冷剂吸热汽化变成高温高压的气态制冷剂工质，流经冷凝器，在冷凝器中，将从蒸发器和发生器中吸取的热量用于加热锅炉低温给水，使得锅炉低温给水被加热变成锅炉的高温给水，温度升高5-8摄氏度，而吸收剂变成稀溶液通过节流阀进入吸收器，再次用于吸收蒸发器来的低温低压的气态制冷剂工质，同时高温高压的气态制冷剂工质冷凝降温后变成液态，流经节流机构膨胀后，压力继续下降，变成低温低压液态制冷剂工质流入蒸发器。The working principle of the utility model is: the high-temperature flue gas discharged from the furnace of the gas-fired boiler at 130-140 degrees Celsius is introduced into the air preheater installed on the flue, and the air preheater uses the waste heat of the high-temperature flue gas to heat the cold air. The heated air is sent to the furnace of the gas-fired boiler for mixed combustion with natural gas. After heat release, the high-temperature flue gas becomes low-temperature flue gas at 60-65 degrees Celsius and enters the evaporator in the absorption heat pump system. When the low-temperature and low-pressure liquid working medium in the absorption heat pump device flows through the evaporator, it absorbs heat from the low-temperature flue gas and evaporates into a gaseous refrigerant. Into the environment, the low-temperature and low-pressure gaseous refrigerant working medium enters the absorber and is absorbed by the absorbent to become a concentrated solution, and then enters the generator through the solution pump, and a small part of steam is introduced into the boiler drum in the generator to heat, due to the refrigerant and The boiling point of the absorbent is quite different, and the refrigerant with a low boiling point absorbs heat and vaporizes to become a high-temperature and high-pressure gaseous refrigerant, which flows through the condenser. In the condenser, the heat absorbed from the evaporator and generator is used for heating Boiler low-temperature feed water, so that the boiler low-temperature feed water is heated to become boiler high-temperature feed water, the temperature rises by 5-8 degrees Celsius, and the absorbent becomes a dilute solution and enters the absorber through the throttle valve, and is used again to absorb the low-temperature and low-pressure water from the evaporator At the same time, the high-temperature and high-pressure gaseous refrigerant condenses and cools down and becomes liquid. After flowing through the throttling mechanism and expanding, the pressure continues to drop, and becomes a low-temperature and low-pressure liquid refrigerant that flows into the evaporator.
值得说明的是该循环是利用从锅炉汽包引出一小部分蒸汽作为驱动循环的动力，蒸汽在发生器放热后变成冷凝水，然后同锅炉高温给水通道的高温给水混合一起被送到燃气锅炉。It is worth noting that this cycle uses a small amount of steam drawn from the boiler drum as the power to drive the cycle. The steam turns into condensed water after the generator releases heat, and then it is mixed with the high-temperature feed water in the high-temperature feed water channel of the boiler and sent to the gas boiler.
本实用新型与现有技术相比的优点是：本实用新型采用热泵技术回收燃气锅炉60-65摄氏度烟气废热，用于加热锅炉的给水，提高给水的温度5-8摄氏度，降低给水在锅炉中的吸热量，以减少燃气量，达到节能减排的目的。Compared with the prior art, the utility model has the advantages that: the utility model adopts the heat pump technology to recycle the flue gas waste heat of the gas-fired boiler at 60-65 degrees Celsius, which is used for heating the feed water of the boiler, increasing the temperature of the feed water by 5-8 degrees Celsius, and reducing the temperature of the feed water in the boiler. In order to reduce the amount of gas, the energy absorbed can be reduced, so as to achieve the purpose of energy saving and emission reduction.
附图说明Description of drawings
图1为本实用新型实施例的结构示意图。Fig. 1 is a schematic structural view of an embodiment of the utility model.
具体实施方式Detailed ways
下面结合附图对本实用新型进一步详述。Below in conjunction with accompanying drawing, the utility model is described in further detail.
如图1所示，一种吸收式热泵循环的烟气余热回收系统，包括燃气锅炉1、空气预热器2和吸收式热泵装置3，所述吸收式热泵装置3包括蒸发器3-1、冷凝器3-2、节流机构3-3、吸收器3-4、溶液泵3-5、发生器3-6和节流阀3-7，所述吸收器3-4、溶液泵3-5、发生器3-6和节流阀3-7依次连接成一个回路，其中的发生器3-6依次连接冷凝器3-2、节流机构3-3、蒸发器3-1，最终连接至吸收器3-4；所述蒸发器3-1设有用于排放烟气和凝结水的排出管3-8，冷凝器3-2设有锅炉低温给水通道3-9和锅炉高温给水通道3-10，锅炉高温给水通道3-9连接至燃气锅炉1；As shown in Fig. 1, a flue gas waste heat recovery system of an absorption heat pump cycle includes a gas boiler 1, an air preheater 2 and an absorption heat pump device 3, and the absorption heat pump device 3 includes an evaporator 3-1, Condenser 3-2, throttling mechanism 3-3, absorber 3-4, solution pump 3-5, generator 3-6 and throttle valve 3-7, the absorber 3-4, solution pump 3- 5. The generator 3-6 and the throttle valve 3-7 are sequentially connected to form a circuit, and the generator 3-6 is sequentially connected to the condenser 3-2, the throttling mechanism 3-3, and the evaporator 3-1, and finally connected to To the absorber 3-4; the evaporator 3-1 is provided with a discharge pipe 3-8 for discharging flue gas and condensed water, and the condenser 3-2 is provided with a boiler low-temperature water supply channel 3-9 and a boiler high-temperature water supply channel 3 -10, the boiler high temperature water supply channel 3-9 is connected to the gas boiler 1;
所述燃气锅炉1设有高温烟气通道1-1和蒸汽分支通道1-2；The gas boiler 1 is provided with a high-temperature flue gas channel 1-1 and a steam branch channel 1-2;
所述高温烟气通道1-1连接空气预热器2，空气预热器2设有冷空气进口2-1，并设有热空气出口通道2-2连接至燃气锅炉1，同时设有低温烟气通道2-3连接至蒸发器3-1；The high temperature flue gas passage 1-1 is connected to the air preheater 2, the air preheater 2 is provided with a cold air inlet 2-1, and a hot air outlet passage 2-2 connected to the gas boiler 1, and a low temperature The flue gas channel 2-3 is connected to the evaporator 3-1;
所述蒸汽分支通道1-2连接发生器3-6，发生器3-6设有凝结水通道3-11，凝结水通道3-11连接至锅炉高温给水通道3-10。The steam branch channel 1-2 is connected to the generator 3-6, and the generator 3-6 is provided with a condensed water channel 3-11, and the condensed water channel 3-11 is connected to the boiler high temperature feed water channel 3-10.
本实用新型的工作原理为：从燃气锅炉1的炉膛排出的130-140摄氏度的高温烟气引入到烟道上安装的空气预热器2，该空气预热器2利用高温烟气余热加热冷空气，冷空气被加热成热空气送入燃气锅炉1的炉膛，用于和天然气混合燃烧，高温烟气放热后变成60-65摄氏度的低温烟气进入吸收式热泵系统中的蒸发器3-1。吸收式热泵装置中低温低压的液态工质流经蒸发器3-1时，从低温烟气中吸收热量蒸发成气态制冷剂工质，低温烟气放热后变成10-15摄氏度烟气和凝结水排入环境，低温低压气态制冷剂工质，进入吸收器3-4被吸收剂吸收变成浓溶液，然后通过溶液泵3-5进入发生器3-6，在发生器3-6中把锅炉汽包引入一小部分蒸汽加热，由于制冷剂和吸收剂沸点相差较大，低沸点的制冷剂吸热汽化变成高温高压的气态制冷剂工质，流经冷凝器3-2，在冷凝器3-2中，将从蒸发器3-1和发生器3-6中吸取的热量用于加热锅炉低温给水，使得锅炉低温给水被加热变成锅炉的高温给水，温度升高5-8摄氏度，而吸收剂变成稀溶液通过节流阀3-7进入吸收器3-4，再次用于吸收蒸发器3-1来的低温低压的气态制冷剂工质，同时高温高压的气态制冷剂工质冷凝降温后变成液态，流经节流机构3-3膨胀后，压力继续下降，变成低温低压液态制冷剂工质流入蒸发器3-1。The working principle of the utility model is: the high-temperature flue gas discharged from the furnace of the gas boiler 1 at 130-140 degrees Celsius is introduced into the air preheater 2 installed on the flue, and the air preheater 2 uses the waste heat of the high-temperature flue gas to heat the cold air , the cold air is heated into hot air and sent to the furnace of the gas boiler 1 for mixed combustion with natural gas. After the high-temperature flue gas releases heat, it becomes low-temperature flue gas at 60-65 degrees Celsius and enters the evaporator 3- in the absorption heat pump system. 1. When the low-temperature and low-pressure liquid working medium in the absorption heat pump device flows through the evaporator 3-1, it absorbs heat from the low-temperature flue gas and evaporates into a gaseous refrigerant working medium. The condensed water is discharged into the environment, and the low-temperature and low-pressure gaseous refrigerant working medium enters the absorber 3-4 and is absorbed by the absorbent to become a concentrated solution, and then enters the generator 3-6 through the solution pump 3-5, and in the generator 3-6 Introduce a small part of steam into the boiler drum for heating. Since the boiling point difference between the refrigerant and the absorbent is large, the refrigerant with a low boiling point absorbs heat and vaporizes to become a high-temperature and high-pressure gaseous refrigerant working medium, which flows through the condenser 3-2, and then In the condenser 3-2, the heat absorbed from the evaporator 3-1 and the generator 3-6 is used to heat the low-temperature feed water of the boiler, so that the low-temperature feed water of the boiler is heated to become the high-temperature feed water of the boiler, and the temperature rises by 5-8 Celsius, while the absorbent becomes a dilute solution and enters the absorber 3-4 through the throttle valve 3-7, and is used again to absorb the low-temperature and low-pressure gaseous refrigerant from the evaporator 3-1, while the high-temperature and high-pressure gaseous refrigerant The working medium becomes liquid after condensing and cooling down, and after flowing through the throttling mechanism 3-3 and expanding, the pressure continues to drop, and the working medium becomes a low-temperature and low-pressure liquid refrigerant and flows into the evaporator 3-1.
值得说明的是该循环是利用从锅炉汽包引出一小部分蒸汽作为驱动循环的动力，蒸汽在发生器3-6放热后变成冷凝水，然后同锅炉高温给水通道3-10的高温给水混合一起被送到燃气锅炉1。It is worth noting that this cycle uses a small amount of steam drawn from the boiler drum as the power to drive the cycle. The steam turns into condensed water after the generator 3-6 releases heat, and then the high-temperature feed water of the boiler high-temperature feed water channel 3-10 The mixture is sent to gas boiler 1 together.
以上所述仅为本实用新型的实施例，并非因此限制本实用新型的专利范围，凡是利用本实用新型说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本实用新型的专利保护范围内。The above is only an embodiment of the utility model, and does not limit the patent scope of the utility model. Any equivalent structure or equivalent process conversion made by using the utility model specification and accompanying drawings, or directly or indirectly used in other Related technical fields are all included in the patent protection scope of the present utility model in the same way.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104359103A (en) * | 2014-12-02 | 2015-02-18 | 代元军 | Flue gas residual heat recovery system with absorption type heat pump circulation |
| CN107314571A (en) * | 2017-07-11 | 2017-11-03 | 新奥（中国）燃气投资有限公司 | Heat pump and its heat recovery method |
| CN110567039A (en) * | 2019-09-06 | 2019-12-13 | 河北昊天热力发展有限公司 | Gas absorption type air source heat pump circulating heat supply system |
| CN110986031A (en) * | 2019-12-05 | 2020-04-10 | 西安交通大学 | System for avoiding water vapor condensation in gas boiler flue gas recirculation pipeline |
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2014
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104359103A (en) * | 2014-12-02 | 2015-02-18 | 代元军 | Flue gas residual heat recovery system with absorption type heat pump circulation |
| CN107314571A (en) * | 2017-07-11 | 2017-11-03 | 新奥（中国）燃气投资有限公司 | Heat pump and its heat recovery method |
| CN107314571B (en) * | 2017-07-11 | 2020-10-27 | 新奥（中国）燃气投资有限公司 | Heat pump system and heat recovery method thereof |
| CN110567039A (en) * | 2019-09-06 | 2019-12-13 | 河北昊天热力发展有限公司 | Gas absorption type air source heat pump circulating heat supply system |
| CN110986031A (en) * | 2019-12-05 | 2020-04-10 | 西安交通大学 | System for avoiding water vapor condensation in gas boiler flue gas recirculation pipeline |
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Effective date of registration: 20151110 Address after: 830091 Nanchang road the Xinjiang Uygur Autonomous Region Urumqi shayibake District No. 236 Xinjiang Institute of electric power engineering Patentee after: Xinjiang Institute of Engineering Address before: 830091 Nanchang road the Xinjiang Uygur Autonomous Region Urumqi shayibake District No. 236 Xinjiang Institute of electric power engineering Patentee before: Dai Yuanjun |
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