CN208348022U - A kind of system using residual heat of air compressor heating pure water - Google Patents
A kind of system using residual heat of air compressor heating pure water Download PDFInfo
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- CN208348022U CN208348022U CN201820960659.5U CN201820960659U CN208348022U CN 208348022 U CN208348022 U CN 208348022U CN 201820960659 U CN201820960659 U CN 201820960659U CN 208348022 U CN208348022 U CN 208348022U
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- pure water
- air compressor
- heat exchanger
- heat
- water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 128
- 238000010438 heat treatment Methods 0.000 title claims abstract description 20
- 239000003921 oil Substances 0.000 claims abstract description 34
- 230000001105 regulatory effect Effects 0.000 claims abstract description 33
- 239000010687 lubricating oil Substances 0.000 claims abstract description 30
- 230000001050 lubricating effect Effects 0.000 claims abstract description 23
- 238000001816 cooling Methods 0.000 claims abstract description 21
- 239000002918 waste heat Substances 0.000 claims abstract description 20
- 239000002131 composite material Substances 0.000 claims abstract description 12
- 238000005461 lubrication Methods 0.000 claims abstract description 11
- 239000000498 cooling water Substances 0.000 claims abstract description 6
- 238000000746 purification Methods 0.000 claims description 13
- 239000008399 tap water Substances 0.000 claims description 6
- 235000020679 tap water Nutrition 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 3
- 239000000314 lubricant Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 20
- 238000005516 engineering process Methods 0.000 abstract description 9
- 238000011084 recovery Methods 0.000 abstract description 9
- 239000010721 machine oil Substances 0.000 abstract description 4
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000012549 training Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Landscapes
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The utility model provides a kind of system using residual heat of air compressor heating pure water, including air compressor machine, water composite cooling pipe, lubrication oil circulation pipe, lubricating can, First Heat Exchanger and pure water tank, water composite cooling pipe is connected to the inlet and outlet of air compressor machine respectively, the waste heat of air compressor machine is taken away using recirculated cooling water, lubricating can oil outlet is connected to by oil pump with air compressor machine oil inlet, air compressor machine oil outlet is connected to by First Heat Exchanger with lubricating can oil outlet, and pure water tank outlet passes sequentially through water pump and connects user with First Heat Exchanger.Pure water and lubricating oil are subjected to heat exchange in heat exchanger, control the internal circulating load of pure water and lubricating oil respectively by regulating valve, residual heat of air compressor heating pure water can not only be maximally utilised, meet the requirement of each production technology, it can also coordinate the recovery utilization rate of waste heat and the stability of system operation, be conducive to industry energy conservation consumption reduction and reduce production cost.
Description
Technical field
The utility model relates to technical field of waste heat utilization, and in particular to a kind of to be using residual heat of air compressor heating pure water
System.
Background technique
In industrial enterprise, air compressor is mainly used for pneumatic equipment, pneumatic tools, pneumatic conveying and purging etc.,
The a large amount of heat of compression can be generated in its long-term, continuous operational process, this partial heat is referred to as waste heat, accounts for about air compressor machine and always consumes
The 75% of energy.The cooling processing of air compressor cooling water is realized generally by the water-cooling pattern with cooling tower at present, will be passed through
The heat loss of the residual heat of air compressor of cold water process causes a large amount of energy waste into atmosphere.Meanwhile some industrial enterprises
For the requirement for meeting production technology, pure water is heated using electric energy or steam, needs to consume a large amount of energy to improve the temperature of pure water
Degree.
In the different processes of industrial enterprise, drop mild heat all need largely to consume energy, for using air compressor machine waste heat and
A large amount of trial has been carried out, but has been primarily present following deficiency in actual production: 1) having been changed in the cold side access of air compressor machine
Hot device is directly heated cold water using the cooling water of air compressor machine, and heat exchanger effectiveness is limited；2) heat is installed additional in the oil pipe line of air compressor machine
Can recover, fail in air compressor machine actual motion using automatic control technology, the preferential operation for guaranteeing air compressor machine, cold water directly with profit
Lubricating oil exchanges heat, and oil temperature is too low to cause kinematic viscosity high, influences the normal operation of air compressor machine；3) lubricating oil of air compressor machine is returned
Road is transformed, and increases heat exchanger and triple valve, when heat exchanger or triple valve failure, needs to close air compressor machine
Heat exchanger or triple valve can be replaced or overhauled, entire air compressor system is caused not to be available.For this purpose, design one
Kind can not only heat pure water using residual heat of air compressor, and make overall plans and coordinate waste heat using the system of residual heat of air compressor heating pure water
Recovery utilization rate and system stability, be conducive to industry energy conservation consumption reduction and reduce production cost, it has also become art technology
Personnel's technical problem urgently to be resolved.
Summary of the invention
The technical problem to be solved by the utility model is to provide a kind of systems using residual heat of air compressor heating pure water, no
It is only capable of heating pure water using residual heat of air compressor, meets the requirement of each production technology, moreover it is possible to coordinate the recovery utilization rate of waste heat and be
The stability of system operation is conducive to industry energy conservation consumption reduction and reduces production cost.
In order to solve the above technical problems, the technical scheme adopted by the utility model is: a kind of is added using residual heat of air compressor
The system of hot pure water, including air compressor machine, water composite cooling pipe, lubrication oil circulation pipe, lubricating can, First Heat Exchanger and pure water tank, water
Cooling tube is connected to the inlet and outlet of air compressor machine respectively, and the waste heat of air compressor machine, lubricating oil are taken away using recirculated cooling water
Tank oil outlet is connected to by the first regulating valve with air compressor machine oil inlet, and air compressor machine oil outlet passes through First Heat Exchanger and lubricating can
Oil return opening connection, pure water tank outlet passes sequentially through water pump and connects user, pure water and lubricating oil with First Heat Exchanger to be changed first
Heat exchange is carried out in hot device, is realized and is heated pure water using residual heat of air compressor.
In preferred scheme, the First Heat Exchanger outlet is connected to by the second heat exchanger with pure water tank, the second heat exchange
Device is mounted on the water inlet pipe of water purification equipment, and water purification equipment outlet pipe is connected to pure water tank, and pure water and tap water are second
Heat exchange is carried out in heat exchanger, for improving the inflow temperature of water purification equipment.
In preferred scheme, second heat exchanger and running water pipe junction are equipped with the second regulating valve, for adjusting certainly
The flow of water.
In preferred scheme, the First Heat Exchanger and the second heat exchanger are plate heat exchanger or shell-and-tube heat exchanger.
In preferred scheme, the First Heat Exchanger is single or multiple is used in series.
In preferred scheme, the outlet of the water pump is equipped with check valve and third regulating valve, for adjusting the stream of pure water
Amount.
In preferred scheme, the water pump is variable frequency pump.
In preferred scheme, the lubrication oil circulation pipe is equipped with filter, for the solid impurity in filtering lubricant oil.
In preferred scheme, the lubricating can is mounted in pure water tank, and pure water and lubricating oil can be in lubricating can outer walls
Carry out heat exchange.
It further include control system, the control system includes PLC controller, temperature sensor, pressure in preferred scheme
Sensor and electronic flowmeter, PLC controller by signal wire respectively with the first regulating valve, the second regulating valve, third regulating valve,
Temperature sensor, pressure sensor are connected with electronic flowmeter, and temperature sensor, pressure sensor and electronic flowmeter are mounted on
On the outlet of water composite cooling pipe, lubrication oil circulation pipe and pure water tank, it is respectively used to detect the temperature, pressure and flow of each pipeline,
And will test signal and be transmitted to PLC controller, PLC controller controls the first regulating valve, the second regulating valve and third respectively and adjusts
The aperture of valve.
The utility model provides a kind of system using residual heat of air compressor heating pure water, has using the above structure with following
Beneficial effect:
1) pure water and lubricating oil are subjected in First Heat Exchanger heat exchange, pure water and lubrication is controlled by regulating valve respectively
The internal circulating load of oil, scientific utilization residual heat of air compressor heats pure water, and meets the requirement of each production technology, and the lubricating oil after cooling returns
Air compressor machine is entered back into after flowing to lubricating can, so that the more stable equilibrium of the temperature of lubricating oil, ensures the normal operation of air compressor machine, together
When retain the water-cooling system of air compressor machine and can switch to former cooling system in time when heat exchanger or valve break down, not influence
The use of air compressor system reduces the hidden danger of safety in production, takes into account the recovery utilization rate of waste heat and the stability of system operation；
2) high temperature pure water more than needed preheats tap water using the second heat exchanger, improves the water inlet of water purification equipment
Temperature can not only promote the efficiency of purifier apparatus, the comprehensive utilization of the energy also be realized, so that the maximum of heat recovery rate
Change, advantageously reduces the production cost of enterprise；
3) lubricating being mounted in pure water tank, pure water and lubricating oil carry out heat exchange by the outer wall of lubricating can,
The oil temperature of lubricating oil is further decreased, the utilization rate of waste heat recycling is improved, while avoiding the oil temperature of lubricating oil too low, lifting system
The stability of operation；
4) pass through each temperature sensor, pressure sensor in PLC control system real-time monitoring and the live operational process of record
With the data-signal of flow instrument, specific monitoring data historical record is formed, and is controlled automatically according to the operating parameter of user preset
The aperture for making corresponding regulating valve makes full use of residual heat of air compressor to heat pure water, ensures that the temperature of lubricating oil and pure water is setting model
In enclosing, meet the technique requirement of production, it is ensured that the stability of system operation, and also control system can also be according to flow Q, temperature difference △
T, the benefit of the specific heat C of water and the recycling of electricity Unit Price comprehensive analysis waste heat, be conducive to make overall plans and coordinate the recovery utilization rate of waste heat with
The stability of system meets the requirement of production technology, is effectively reduced convenient for adjusting operating parameter in time according to different working condition requirements
Operation difficulty and working strength, greatly improve production efficiency and the degree of automation, and inexperienced new employee also can be fast by training
Speed is on duty.
Detailed description of the invention
The utility model is described in further detail with reference to the accompanying drawings and examples:
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of air compressor machine pipeline in the utility model；
Fig. 3 is the structural schematic diagram of First Heat Exchanger in the utility model；
Fig. 4 is the structural schematic diagram of First Heat Exchanger in the utility model；
Fig. 5 is the structural schematic diagram of lubricating can in the utility model；
Fig. 6 is the control structure schematic diagram of the utility model.
In figure: air compressor machine 1, water composite cooling pipe 2, lubrication oil circulation pipe 3, lubricating can 4, First Heat Exchanger 5, pure water tank 6, the
One regulating valve 7, water pump 8, the second heat exchanger 9, water purification equipment 10, the second regulating valve 11, check valve 12, third regulating valve 13,
Filter 14, PLC controller 15, temperature sensor 16, pressure sensor 17, electronic flowmeter 18.
Specific embodiment
In order to make those skilled in the art more fully understand the technical solution of the utility model, below with reference to embodiment pair
The utility model is described in further detail.In the following description, descriptions of well-known structures and technologies are omitted, to avoid
Unnecessarily obscure the concept of the utility model.
As in Fig. 1-6, a kind of system using residual heat of air compressor heating pure water, including air compressor machine 1, water composite cooling pipe 2, lubrication
Oil circulating pipe 3, lubricating can 4, First Heat Exchanger 5 and pure water tank 6, water composite cooling pipe 2 respectively with the water inlet of air compressor machine 1 and water outlet
Mouth connection, the waste heat of air compressor machine is taken away using recirculated cooling water, and 4 oil outlet of lubricating can passes through the first regulating valve 7 and air compressor machine 1
Oil inlet connection, 1 oil outlet of air compressor machine are connected to by First Heat Exchanger 5 with 4 oil return opening of lubricating can, 6 outlet of pure water tank according to
Secondary to connect user by water pump 8 and First Heat Exchanger 5, pure water and lubricating oil carry out heat exchange in First Heat Exchanger 5, realize benefit
Pure water is heated with residual heat of air compressor.The oil pressure of lubricating oil is increased to 0.8Mpa or so in the process of running by air compressor machine, and is driven
Lubricating oil flows in lubrication oil circulation pipe 3, and lubricating can 4 is pressure vessel.By pure water and lubricating oil in First Heat Exchanger 5
Heat exchange is carried out, the waste-heat pure water of scientific utilization air compressor machine is substantially saved in different processes and dropped needed for mild heat largely
Energy consumption, reduce the energy consumption and production cost of enterprise, the lubricating oil after cooling enters back into air compressor machine 1 after being back to lubricating can 4,
So that the more stable equilibrium of the temperature of lubricating oil, ensures the normal operation of air compressor machine, while retaining the water composite cooling pipe road of air compressor machine, when
When heat exchanger or valve break down, former cooling system can be switched in time, does not influence the use of air compressor system, reduce safety
The hidden danger of production takes into account the recovery utilization rate of waste heat and the stability of system operation.
In preferred scheme, 5 outlet of First Heat Exchanger is connected to by the second heat exchanger 9 with pure water tank 6, and second changes
Hot device 9 is mounted on the water inlet pipe of water purification equipment 10, and 10 outlet pipe of water purification equipment is connected to pure water tank 6, pure water and originally
Water carries out heat exchange in the second heat exchanger 9, for improving the inflow temperature of water purification equipment 10.It will using the second heat exchanger 9
High temperature pure water more than needed preheats tap water, improves the inflow temperature of water purification equipment 10, not only promotes water purification equipment
10 efficiency also realizes the comprehensive utilization of the energy, so that the maximization of heat recovery rate, advantageously reduces the production of enterprise
Cost.
In preferred scheme, second heat exchanger 9 is equipped with the second regulating valve 11 with running water pipe junction, for adjusting
The flow of tap water.
In preferred scheme, the First Heat Exchanger 5 and the second heat exchanger 9 are plate heat exchanger or pipe shell type heat exchange
Device, not only heat exchange efficiency is high, heat loss is small, but also advantages of compact and light structure, occupied area are small.
In preferred scheme, the First Heat Exchanger 5 is used in series to be single or multiple, and may be selected according to production reality will
Multiple First Heat Exchangers 5 are used in series, and are further decreased the temperature of lubricating oil, are maximally utilised residual heat of air compressor.
In preferred scheme, the outlet of the water pump 8 is equipped with check valve 12 and third regulating valve 13, for adjusting pure water
Flow.
In preferred scheme, the water pump 8 is variable frequency pump, is convenient for adjust automatically revolving speed, realizes and quickly adjusts flow and pressure
Power.
In preferred scheme, the lubrication oil circulation pipe 3 is equipped with filter 14, miscellaneous for the solid in filtering lubricant oil
Matter.
In preferred scheme, the lubricating can 4 is mounted in pure water tank 6, and pure water and lubricating oil can be outside lubricating cans 4
Wall carries out heat exchange, further decreases the oil temperature of lubricating oil, improves the utilization rate of waste heat recycling, while also avoiding the oil of lubricating oil
Temperature is too low, the stability of lifting system operation.
Further include control system in preferred scheme, the control system include PLC controller 15, temperature sensor 16,
Pressure sensor 17 and electronic flowmeter 18, PLC controller 15 by signal wire respectively with the first regulating valve 7, the second regulating valve
11, third regulating valve 13, temperature sensor 16, pressure sensor 17 and electronic flowmeter 18 connect, temperature sensor 16, pressure
Sensor 17 and electronic flowmeter 18 are mounted on the outlet of water composite cooling pipe 2, lubrication oil circulation pipe 3 and pure water tank 6, are used respectively
In temperature, pressure and the flow of each pipeline of detection, and it will test signal and be transmitted to PLC controller 15, PLC controller 15 is controlled respectively
Make the aperture of the first regulating valve 7, the second regulating valve 11 and third regulating valve 13.Pass through PLC control system real-time monitoring and record
The data-signal of each temperature sensor 16, pressure sensor 17 and electronic flowmeter 18 in live operational process forms specific prison
Measured data historical record, and the aperture of corresponding regulating valve is automatically controlled according to the operating parameter of user preset, make full use of pneumatics
The temperature of the waste-heat pure water of machine 1, guarantee lubricating oil and pure water within the set range, meets the technique requirement of production, it is ensured that
The stability of system operation, and control system can also be comprehensive point according to flow Q, temperature difference △ T, the specific heat C of water and electricity Unit Price
The benefit for analysing waste heat recycling, is conducive to the stability of the recovery utilization rate for making overall plans and coordinate waste heat and system, convenient for according to different works
Condition requires adjustment operating parameter in time, meets the requirement of production technology, operation difficulty and working strength is effectively reduced, greatly improve
Production efficiency and the degree of automation, inexperienced new employee also can quickly be on duty by training.In addition, may be used also by control system
It links with air compressor machine 1, starts simultaneously with air compressor machine 1, closed after air compressor machine 1 shuts down a period of time, follow pneumatics to realize
Machine automatic start-stop machine.
The above embodiments are only the optimal technical scheme of the utility model, the embodiment being not all of, and are not construed as
Limitation for the utility model, the technical solution that the protection scope of the utility model should be recorded with claim, including right
It is required that the equivalents of technical characteristic are protection scope in the technical solution recorded.Equivalent replacement i.e. within this range changes
Into being also within the protection scope of the utility model.
Claims (10)
1. a kind of system using residual heat of air compressor heating pure water, it is characterized in that: including air compressor machine (1), water composite cooling pipe (2), profit
Lubricating oil circulation pipe (3), lubricating can (4), First Heat Exchanger (5) and pure water tank (6), water composite cooling pipe (2) respectively with air compressor machine (1)
Inlet and outlet connection, take away the waste heat of air compressor machine using recirculated cooling water, lubricating can (4) oil outlet passes through first
Regulating valve (7) is connected to air compressor machine (1) oil inlet, and air compressor machine (1) oil outlet passes through First Heat Exchanger (5) and lubricating can (4)
Oil return opening connection, pure water tank (6) outlet pass sequentially through water pump (8) and First Heat Exchanger (5) connection user, pure water and lubricating oil
Heat exchange is carried out in First Heat Exchanger (5), is realized and is heated pure water using residual heat of air compressor.
2. a kind of system using residual heat of air compressor heating pure water according to claim 1, it is characterized in that: described first changes
Hot device (5) outlet is connected to by the second heat exchanger (9) with pure water tank (6), and the second heat exchanger (9) is mounted on water purification equipment
(10) on water inlet pipe, water purification equipment (10) outlet pipe is connected to pure water tank (6), and pure water and tap water are in the second heat exchanger
(9) heat exchange is carried out in, for improving the inflow temperature of water purification equipment (10).
3. a kind of system using residual heat of air compressor heating pure water according to claim 2, it is characterized in that: described second changes
Hot device (9) and running water pipe junction are equipped with the second regulating valve (11), for adjusting the flow of tap water.
4. a kind of system using residual heat of air compressor heating pure water according to claim 2, it is characterized in that: described first changes
Hot device (5) and the second heat exchanger (9) are plate heat exchanger or shell-and-tube heat exchanger.
5. a kind of system using residual heat of air compressor heating pure water according to claim 1, it is characterized in that: described first changes
Hot device (5) is single or multiple is used in series.
6. a kind of system using residual heat of air compressor heating pure water according to claim 1, it is characterized in that: the water pump
(8) outlet is equipped with check valve (12) and third regulating valve (13), for adjusting the flow of pure water.
7. a kind of system using residual heat of air compressor heating pure water according to claim 1, it is characterized in that: the water pump
It (8) is variable frequency pump.
8. a kind of system using residual heat of air compressor heating pure water according to claim 1, it is characterized in that: the lubricating oil
Circulation pipe (3) is equipped with filter (14), for the solid impurity in filtering lubricant oil.
9. a kind of system using residual heat of air compressor heating pure water according to claim 1, it is characterized in that: the lubricating oil
Tank (4) is mounted in pure water tank (6), and pure water and lubricating oil can carry out heat exchange in lubricating can (4) outer wall.
10. -9 described in any item a kind of systems using residual heat of air compressor heating pure water according to claim 1, it is characterized in that:
Further include control system, the control system include PLC controller (15), temperature sensor (16), pressure sensor (17) and
Electronic flowmeter (18), PLC controller (15) by signal wire respectively with the first regulating valve (7), the second regulating valve (11), third
Regulating valve (13), temperature sensor (16), pressure sensor (17) and electronic flowmeter (18) connection, temperature sensor (16),
Pressure sensor (17) and electronic flowmeter (18) are mounted on water composite cooling pipe (2), lubrication oil circulation pipe (3) and pure water tank (6)
It on outlet, is respectively used to detect the temperature, pressure and flow of each pipeline, and will test signal and be transmitted to PLC controller (15),
PLC controller (15) controls the aperture of the first regulating valve (7), the second regulating valve (11) and third regulating valve (13) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820960659.5U CN208348022U (en) | 2018-06-21 | 2018-06-21 | A kind of system using residual heat of air compressor heating pure water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820960659.5U CN208348022U (en) | 2018-06-21 | 2018-06-21 | A kind of system using residual heat of air compressor heating pure water |
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| Publication Number | Publication Date |
|---|---|
| CN208348022U true CN208348022U (en) | 2019-01-08 |
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ID=64880654
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820960659.5U Active CN208348022U (en) | 2018-06-21 | 2018-06-21 | A kind of system using residual heat of air compressor heating pure water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115182867A (en) * | 2022-06-28 | 2022-10-14 | 宁德厦钨新能源材料有限公司 | Water temperature balance control method and device for air compressor waste heat recovery |
-
2018
- 2018-06-21 CN CN201820960659.5U patent/CN208348022U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115182867A (en) * | 2022-06-28 | 2022-10-14 | 宁德厦钨新能源材料有限公司 | Water temperature balance control method and device for air compressor waste heat recovery |
| CN115182867B (en) * | 2022-06-28 | 2023-10-27 | 宁德厦钨新能源材料有限公司 | Water temperature balance control method and device for waste heat recovery of air compressor |
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