CN202280489U - Power generation device based on low-temperature afterheat recovery - Google Patents
Power generation device based on low-temperature afterheat recovery Download PDFInfo
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- CN202280489U CN202280489U CN2011203521375U CN201120352137U CN202280489U CN 202280489 U CN202280489 U CN 202280489U CN 2011203521375 U CN2011203521375 U CN 2011203521375U CN 201120352137 U CN201120352137 U CN 201120352137U CN 202280489 U CN202280489 U CN 202280489U
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Abstract
The utility model discloses a power generation device based on low-temperature afterheat recovery. The power generation device comprises a heat converter, a turbine, a condenser, a liquid storage device, a first working medium pump, a heat regenerator and a second working medium pump, wherein the heat converter is connected with the turbine through a liquid outlet pipe, the turbine is connected with the condenser, and an output shaft of the turbine is connected with a power generator and drives the power generator for power generation; a heat exchanger is of a big-end-up conical cavity structure and comprises a stainless steel casing, an exhaust pipeline and a heat insulating material; the stainless steel casing of which the inner wall is coated with the heat insulating material forms a conical cavity with an semi-circular top face, the ratio of the diameter of the upper semi-circle of the conical cavity to the diameter of the bottom face of the conical cavity is 1:(2-3); and the upper half part of the inner wall of the stainless steel casing of the heat converter is of a corrugated structure. A conical hollow structure arranged in the heat converter transforms working media heated by the heat converter into overheat steam which is used for driving the turbine so as to drive the power generator to work. The power generation device disclosed by the utility model is suitable for places in need of discharging the afterheat of central air conditioners in places such as airports, stations, shopping centers and the like.
Description
Technical field
The utility model relates to a kind of manufacturing mechanism of generating, is specifically related to the electricity generating device that a kind of low temperature exhaust heat reclaims.Through the thermoconverter heating working medium is reached and become superheated vapor, be specially adapted to low-temperature waste heat recovery in the heat recovery of large-scale central air-conditioner unit and the printing and dyeing mill's sewage.
Background technique
According to statistics, the energy that dumped now of the whole world accounts for total with 74% of energy, from energy grade see account for 2/3 in addition more mostly be low temperature exhaust heat.Existing low temperature exhaust heat recovering device, major part is simple heat recovery, having only fraction is the exhaust heat recovery power generation device.Be exactly this sub-fraction exhaust heat recovery power generation device, also major part concentrates on picture cement, this traditional highly energy-consuming industry of steel industry.Though the power recovery of low temperature exhaust heat is more than simple heat recovery complicacy, difficulty is also high, and along with the shortage of world energy sources, carrying out the low-temperature electricity-generating technical research is inexorable trend.So just do not allow a large amount of low-temperature waste heats to enter environment, both practiced thrift the energy, protected environment.
Chinese invention patent 200510032362.X discloses a kind of method of utilizing central air-conditioner waste heat processing hot water; This method comprises the steps: that (1) installs a water stop additional at 2 places, central air-conditioner condenser high-temperature zone, and water stop contains the condensation tube of high-temperature zone 50%～100% and forms between the heat transfer zone of independent sealing; (2) water stop output terminal pipe is connect the hot water tank input end; Hot water tank output terminal pipe connects the water stop input end; Making is filled with water in the hot water tank after the heat heating, is returned hot water tank by the water stop output terminal again and forms the circulating water heating after condensation tube distributes by water stop input end entering condenser high-temperature zone.Owing to be prone to cause the defective of generating working medium leakage after there is the former air-conditioning unit condenser of change in patent of invention 200510032362.X and installs equipment additional, so the related equipment of this utility model patent should not be as electricity generating device.Again for example: Chinese utility model patent 200520063267.1 discloses a kind of dyeing waste water waste heat recovering device; This device filters through the waste water filtering pond at the waste water of the overflow of dyeing machine hot-tub; Deliver to thermoconverter then; Pass to heat from the next clear water of water inlet, the clear water that temperature rises gets into the consumption that hot-tub has reduced steam.Follow the flow of generating working medium not equate owing to have the waste water of waste heat; The conventional plate type heat exchanger that adopts can make plate both sides rate of flow of fluid unequal; Make the heat exchanger distortion easily, so the waste heat recovering device that also should not adopt this model utility to announce generates electricity.
The model utility content
The purpose of the utility model is to overcome the deficiency of existing technology; A kind of efficient, stable, electricity generating device of low temperature exhaust heat recovery reliably is provided; Solve existing equipment and be difficult to the huge energy waste of effective low temperature exhaust heat formation of reclaiming and serious thermo-pollution; And used heat is carried out power recovery, improve the flexibility that energy utilizes.
The purpose of the utility model realizes through following technological scheme:
The electricity generating device that a kind of low temperature exhaust heat reclaims comprises thermoconverter, turbine, condenser, liquid-storage container, first working medium pump, regenerator and second working medium pump; Thermoconverter connects turbine through drain pipe, and turbine is connected with condenser, and condenser is connected with liquid-storage container, and liquid-storage container is connected with regenerator through parallel pipeline, and the branch road one of parallel pipeline is provided with valve, and the branch road two of parallel pipeline is provided with the valve and first working medium pump; Regenerator is connected with thermoconverter through second working medium pump; Turbine also is connected with regenerator, and thermoconverter also is connected with condenser, and the turbine output shaft is connected with generator;
Said thermoconverter comprises stainless steel casing, exhaust duct and thermal insulating material for going up little conical cavity structure down greatly; It is semicircular conical cavity that the stainless steel casing that inwall scribbles thermal insulating material forms end face, and the length to diameter ratio of semicircular diameter in conical cavity top and bottom surface is 1: 2～3; End face and bottom surface sealing on the hollow-core construction; On the semicircle of conical cavity top, be provided with generating working medium outlet, the generating working medium outlet is big for lower ending opening, little horn-like of open upper end, and opening is down; The bottom surface of heat exchanger has the generating working medium import, and outlet pipe directly passes the conical cavity center; The first half of the stainless steel casing inwall of thermoconverter is a ripple struction.
For further realizing the utility model purpose, the capacity of said conical cavity is preferably 4～6 liters.
Said outlet pipe outer surface preferably scribbles Heat Conduction Material.
It is siliceous that said Heat Conduction Material is preferably heat conduction.
The length to diameter ratio of semicircular diameter in said conical cavity top and bottom surface is preferably 1: 2.
The utility model has following advantage and beneficial effect with respect to existing technology:
The utility model is through being provided with the hollow-core construction of taper in the thermoconverter; And with the volume controlled of hollow-core construction scope at 4～6 liters; The diameter proportion of the diameter of end face and bottom surface is 1: 2～3 on the thermoconverter hollow-core construction; Make working medium become steam through the thermoconverter heating; The undulatory design of thermoconverter inwall upper half part, the semicircular design of upper surface and the trumpet-shaped design of steam (vapor) outlet end all are in order to make gas-liquid separation, to avoid liquid to get into turbine, the performance of influence generating and turbine.The utility model carries out power recovery for the low-temperature waste heat that is difficult to reclaim in places such as central air-conditioner unit, Iron And Steel Plant in the past, has improved the flexibility that energy utilizes.When being installed on the central air-conditioner unit; Also can promote the heat radiation of compressor exhaust pipe effectively; Reduced the relief opening temperature of compressor, reduced the exhaust pressure of compressor, made compressor operating in normal working (delivery temperature, pressure keep optimum condition); Reach the effect (condensing temperature reduces by 1 ℃, and the air-conditioning power consumption reduces by 4%) of central air-conditioner energy conservation of compressor consumption reduction.The utility model device is that a kind of energy-conservation and practical heating low temperature exhaust heat reclaims electricity generating device.
Description of drawings
Fig. 1 reclaims the structural representation of electricity generating device for low temperature exhaust heat.
Fig. 2 is the structural representation of thermoconverter among Fig. 1.
Fig. 3 is the partial enlarged drawing at the A place of Fig. 2.
Fig. 4 is the partial enlarged drawing at the B place of Fig. 2.
Fig. 5 is centre air-conditioning waste heat recovering device structural representation.
Fig. 6 is the central air-conditioner waste heat recovering device structural representation that has control gear.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done further to describe, but the utility model requires the scope of protection to be not limited to the scope of embodiment statement.
Electricity generating device as shown in Figure 1, that a kind of low temperature exhaust heat reclaims comprises thermoconverter 1, turbine 2, condenser 3, liquid-storage container 4, first working medium pump 5, regenerator 6 and second working medium pump 7; Thermoconverter 1 connects turbine 2 through drain pipe; Turbine 2 is connected with condenser 3, and condenser 3 is connected with liquid-storage container 4, and liquid-storage container 4 is connected with regenerator 6 through parallel pipeline; The branch road one of parallel pipeline is provided with valve, and the branch road two of parallel pipeline is provided with the valve and first working medium pump 5; Regenerator 6 is connected with thermoconverter 1 through second working medium pump 7; Turbine 2 also is connected with regenerator 6, and thermoconverter 1 also is connected with condenser 3, and turbine 2 output shafts are connected with generator, drives generator for electricity generation.Regenerator 6 is installed is improved the working medium temperature, guarantee that working medium can fully gasify in thermoconverter 1.
Shown in Fig. 2-4, thermoconverter 1 comprises stainless steel casing 17, scribbles heat conduction siliceous exhaust duct 18 and thermal insulating material 19 for going up little conical cavity structure down greatly; The last end face of stainless steel casing 17 formation that inwall scribbles thermal insulating material 19 is semicircular conical cavity, and the length to diameter ratio of semicircular diameter in conical cavity top and bottom surface is 1: 2～3; End face and bottom surface sealing on the hollow-core construction, the capacity of conical cavity preferably is controlled at 4～6 liters scope; On the semicircle of conical cavity top, be provided with generating working medium outlet 25, generating working medium outlet 25 is that lower ending opening is big, little horn-like of open upper end, and opening is down; The bottom surface of heat exchanger has generating working medium import 24, scribbles the siliceous outlet pipe of heat conduction 18 and directly passes the conical cavity center; The first half of stainless steel casing 17 inwalls of thermoconverter is a ripple struction; The horn-like structural design of the ripple struction of stainless steel casing 17 inwalls and generating working medium outlet 25 helps the gas-liquid separation of generating working medium, avoids liquid to pass through generating working medium outlet 25 and gets into turbine 2, the performance of influence generating and turbine.The air-flow that carries droplet is when flowing through wave structure, and undulatory stainless steel casing 17 inwalls have increased the area of contact of air-flow and wall, and drop is attached on the wall, has promoted the gasification of generating working medium drop; The air-flow of entrained drip is when flowing through ripple struction, because there is certain radian in ripple struction, gas is flowed along the arcuation wall changed gas flow speed, and drop is thrown on the wall, makes drop along under the wall flow; Air-flow flows along wall, changed airflow direction and gravity between angle, also can make drop fallen by gravity effect, the realization gas-liquid separation.Through the effect of one-level level wave structure, most drop is separated, and at this moment air-flow arrives the heat exchanger top, and the top of semicircle shape is identical with the effect of wave structure.Air-flow gets into trumpet-shaped opening to refluxed, and the drop that at this moment contains in the air-flow is considerably less, and trumpet-shaped design has increased the area of contact with air-flow, and drop is attached on the wall, has also promoted the gasification of generating working medium.At this moment the air-flow that gets into pipeline has been substantially free of drop, even still contain on a small quantity, because manifold pressure is lower than the pressure of heat exchanger, they is fully gasified.
As shown in Figure 1, the volume controlled of thermoconverter 1 hollow-core construction is 4～6 liters scope, and the diameter proportion of semicircular diameter in thermoconverter hollow-core construction top and bottom surface is 1: 2～3; The sealing of hollow-core construction top and the bottom; Central tube refrigerant inlet 22 is connected with compressor 8 through outlet pipe; Pump into outlet pipe from the central air-conditioner evaporator refrigerant through compressor 8; In thermoconverter 1 with cavity in working medium carry out heat exchange, going out from refrigerant outlet 23 becomes the refrigeration agent that gets into condenser 9, flows into condenser 9.Since thermoconverter sender property outlet temperature and the flow relation of being inversely proportional to, so diameter above the thermoconverter and following diameter proportion are 1: 2-3, so that satisfy the requirement of heat.For reducing thermal contact resistance, coat good Heat Conduction Material (siliceous) like heat conduction at outlet pipe 18 outer surfaces.As shown in Figure 2, working medium is left heat exchanger from the import entering of bottom surface from the outlet of upper bottom surface, and the high temperature refrigerant in working medium and the exhaust duct forms adverse current.Working medium is continual flowing in this heat exchanger, by the heat from the compressor exhaust pipe refrigeration agent.Thermal insulating material can be selected the PVC thermal insulating material for use, and thermoconverter 1 is selected stainless heat exchanger for use.Working medium adopts R245, R134A, and under pressure control, boiling point control is at 60-70 ℃.
The diameter proportion of semicircular diameter in thermoconverter hollow-core construction top and bottom surface is 1: 2～3, and its reason is according to following formula:
Q
Inhale=C * M * Δ t
＝C×ρ×L×S×v×Δt
＝C×ρ×L×π×r
2×v×Δt
The meaning of symbol is following in the following formula:
The import and export temperature difference of Δ t---working medium, ℃;
The specific heat of C---working medium, kJ/kg ℃;
The density of ρ---working medium, kg/m
3
The length of L---thermoconverter, m;
S---the sectional area of thermoconverter hollow core structure cross section, m
2
R---the radius of thermoconverter hollow core structure cross section, m;
The flow velocity of v---working medium, m/s;
The mass flow rate of M---working medium, kg/s;
When thermoconverter hollow core structure bottom with the top the time, the radius r of its cross section=1 unit length becomes 1/2 unit length, according to equation of heat balance Q
InhaleConstant, i.e. thermoconverter hollow core structure Q topmost
Last suctionWith Q bottom
The following suctionEquate Q
Inhale=C * ρ * L * π * r
2* Δ t and since the radius r of thermoconverter hollow core structure cross section topmost be bottom 1/2, Δ t growth is 4 times so, promptly for the heat exchanger of taper in theory the working medium temperature can raise more than 4 times, so the temperature rise of working medium is enough to reach boiling point in the heat exchanger.
The working substance steam of coming out from thermoconverter 1; Get into turbine 2 through pipeline, working substance steam makes turbine 2 drive generator for electricity generation, and the steam part after the acting gets into condenser 3 condensations and becomes liquid; Another part gets into regenerator 6; Liquid working substance in the condenser 3 gets into liquid-storage container 4, the first working medium pumps 5 and takes liquid working substance to regenerator 6 from liquid-storage container and mix with the high-temperature steam that comes out from turbine 2 and become high-temp liquid, and second working medium pump 7 takes liquid working substance to thermoconverter 1.Gas carries out heat exchange in liquid working substance and the exhaust duct 18.
Embodiment: the application of electricity generating device in the heat recovery of central air-conditioner unit that low temperature exhaust heat reclaims
As shown in Figure 5, a kind of central air conditioning that is provided with the device of low temperature exhaust heat recovery generating comprises thermoconverter 1, turbine 2, condenser 3, liquid-storage container 4, working medium pump 5, regenerator 6 and working medium pump 7; Also comprise compressor 8, condenser 9, vaporizer 12, throttle valve 13, refrigerating water pump 11, air-conditioner tail end equipment capable 10, cooling tower 15 and coolant pump 14.Air-conditioner tail end equipment capable 10 and bypass valve parallel connection, the end in two parallel connected end directly inserts vaporizer 12, and the other end inserts vaporizer 12 through refrigerating water pump 11, constitutes the chilled water circulatory system.One end of cooling tower 15 directly connects condenser 9, and the other end connects condenser 9 through coolant pump 14, constitutes cooling water recirculation system.Thermoconverter 1 is installed between the compressor 8 and condenser 9 of central air-conditioner; The high pressure termination central air-conditioner vaporizer 12 of compressor 8 wherein; The low voltage terminal of compressor 8 connects condenser 9 through thermoconverter 1, and throttle valve 13 two ends are connected with vaporizer 12 with condenser 9 respectively; The working medium pipeline is connected with thermoconverter 1 lower end through valve, and drain pipe is connected thermoconverter 1 upper end, and is connected with turbine 2, and turbine 2 is connected with condenser 3 through valve, and the output shaft of turbine 2 is connected with generator.Condenser 3 is connected with liquid-storage container 4 through valve, liquid-storage container 4 and regenerator 6.Regenerator 6 is connected with the generating working medium import 24 of thermoconverter 1 through second working medium pump 7, and the backheat fluid output of turbine 2 is connected with the import of regenerator 6.The purpose that regenerator is installed is to guarantee that in order to improve the working medium temperature working medium can fully gasify in thermoconverter 1.The generating working medium import 24 of thermoconverter 1 bottom surface links to each other with second working medium pump 7 through pipeline, and the generating working medium outlet 25 of thermoconverter 1 upper bottom surface links to each other with turbine 2 through pipeline.
As shown in Figure 6, the central air-conditioner waste heat recovering device that has control gear comprises programmable controller PLC; Be respectively equipped with the first temperature transducer K1 and the second temperature transducer K2 in the import and export of the pipe for flowing of refrigerant of vaporizer 4, the import and export of the refrigeration agent flowing pipe of condenser 9 are respectively equipped with three-temperature sensor K3 and the 4th temperature transducer K4; Pipeline between thermoconverter 1 and the turbine 2 is provided with the 5th temperature transducer K5; The bypass valve two ends are respectively equipped with the first pressure transducer L1 and the second pressure transducer L2; The first temperature transducer K1, the second temperature transducer K2, three-temperature sensor K3, the 4th temperature transducer K4, the 5th temperature transducer K5, the first pressure transducer L1 are connected with programmable controller PLC respectively with the second pressure transducer L2, and programmable controller PLC is connected with touch-screen-enabled O with power supply Power respectively; Programmable controller PLC also respectively through the first frequency variator S1, the second frequency variator S2 and the 3rd frequency variator S3 respectively with refrigerating water pump 6, coolant pump 14 and cooling tower 15.The first temperature transducer K1, the second temperature transducer K2, three-temperature sensor K3, the 4th temperature transducer K4 and the 5th temperature transducer K5 collecting temperature direct information programmable controller PLC carry out the analysing and processing computing; The first pressure transducer L1 and the second pressure transducer L2 gather pressure information; Be sent to programmable controller PLC and carry out the analysing and processing computing; The operation frequency of refrigerating water pump 11 and coolant pump 14 is regulated and control in the VFC instruction of programmable controller PLC output respectively through the first frequency variator S1, the second frequency variator S2; The VFC instruction of programmable controller PLC output is through the rotating speed of the 3rd frequency variator S3 control cooling tower 15 blower fans; Make cooling tower 15 be in optimum condition, reach energy-conservation purpose.The main purpose of PLC is to come energy-conservation through the rotating speed of regulating refrigerating water pump 11, coolant pump 14 and blower fan of cooling tower.
The device of the central air-conditioner exhaust heat recovery power generation of the utility model both can be positioned in the existing central air-conditioner; Also can be positioned in the central air-conditioner to be installed; To the existing central air-conditioner of having installed and used; Under the condition that does not change original central air-conditioner hardware and control system parameter, the device and the control system that install a cover central air-conditioner exhaust heat recovery power generation additional get final product.For the new central air-conditioner of installing of plan, the device and the control system of central air-conditioner exhaust heat recovery power generation can, be installed the central air-conditioner unit when being installed.
For the place that central air-conditioner has been installed, under the situation of condition permission, the exhaust heat recovery power generation device can be installed, so that satisfy the electricity consumption needs of these occasions.Central air-conditioner been has all has been installed and used in places such as present airport, station, market, and these local central air-conditioner unit refrigerating capacitys are generally in 300～1000 standard tons, in addition bigger refrigerating capacity (1 standard ton=3.517Kw); The used heat of its discharging equals refrigerating capacity and compressor heating value sum, if this used heat is discharged into the space, can cause thermo-pollution to surrounding environment; Cause ambient temperature to raise; The radiating effect that causes condenser descends, and condensing temperature is raise, and causes that then the delivery temperature of compressor and pressure raise; The refrigerating capacity of air-conditioning system is reduced, and energy consumption increases simultaneously.The temperature on central air-conditioner compressor outlet pipe surface when running well (Tail Pipe Temperature, Tail Pipe Temperature be usually than low 10～40 ℃ of cylinder delivery temperature, normal state lower cylinder delivery temperature in 150 ℃) is 110 ℃～120 ℃.If the compressor exhaust pipe temperature is no more than 120 ℃, be normal working, the compressor exhaust pipe temperature surpasses 120 ℃, and system can report to the police, shut down, and need repairing this moment.And after installing heat recovery heat exchanger additional on the outlet pipe between compressor exhaust pipe and the condenser; Can promote the heat radiation of compressor exhaust pipe effectively; Reduced the relief opening temperature of compressor, reduced the exhaust pressure of compressor simultaneously, made compressor operating in normal working (delivery temperature, pressure keep optimum condition); Reach the effect (condensing temperature reduces by 1 ℃, and the air-conditioning power consumption reduces by 4%) of central air-conditioner energy conservation of compressor consumption reduction.
Adjusting through automatic control system is under the stable operating mode central air-conditioner, and central air-conditioner can be stablized the discharge heat.Because the structure of thermoconverter and stable heat, low temperature exhaust heat reclaim electricity generating device and can realize efficiently, stablize, generate electricity reliably.Because the utility model has improved the structure of thermoconverter, under the condition that does not change original central air-conditioner hardware and control system parameter, just can carry out exhaust heat recovery power generation.
Claims (5)
1. the electricity generating device that low temperature exhaust heat reclaims is characterized in that: comprise thermoconverter, turbine, condenser, liquid-storage container, first working medium pump, regenerator and second working medium pump; Thermoconverter connects turbine through drain pipe, and turbine is connected with condenser, and condenser is connected with liquid-storage container, and liquid-storage container is connected with regenerator through parallel pipeline, and the branch road one of parallel pipeline is provided with valve, and the branch road two of parallel pipeline is provided with the valve and first working medium pump; Regenerator is connected with thermoconverter through second working medium pump; Turbine also is connected with regenerator, and thermoconverter also is connected with condenser, and the turbine output shaft is connected with generator;
Said thermoconverter comprises stainless steel casing, exhaust duct and thermal insulating material for going up little conical cavity structure down greatly; It is semicircular conical cavity that the stainless steel casing that inwall scribbles thermal insulating material forms end face, and the length to diameter ratio of semicircular diameter in conical cavity top and bottom surface is 1: 2～3; End face and bottom surface sealing on the hollow-core construction; On the semicircle of conical cavity top, be provided with generating working medium outlet, the generating working medium outlet is big for lower ending opening, little horn-like of open upper end, and opening is down; The bottom surface of heat exchanger has the generating working medium import, and outlet pipe directly passes the conical cavity center; The first half of the stainless steel casing inwall of thermoconverter is a ripple struction.
2. the electricity generating device that low temperature exhaust heat according to claim 1 reclaims, it is characterized in that: the capacity of said conical cavity is 4～6 liters.
3. the electricity generating device that low temperature exhaust heat according to claim 1 reclaims, it is characterized in that: said outlet pipe outer surface scribbles Heat Conduction Material.
4. the electricity generating device that low temperature exhaust heat according to claim 3 reclaims, it is characterized in that: said Heat Conduction Material is that heat conduction is siliceous.
5. the electricity generating device that low temperature exhaust heat according to claim 1 reclaims, it is characterized in that: the length to diameter ratio of semicircular diameter in said conical cavity top and bottom surface is 1: 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203521375U CN202280489U (en) | 2011-09-20 | 2011-09-20 | Power generation device based on low-temperature afterheat recovery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203521375U CN202280489U (en) | 2011-09-20 | 2011-09-20 | Power generation device based on low-temperature afterheat recovery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202280489U true CN202280489U (en) | 2012-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203521375U Expired - Fee Related CN202280489U (en) | 2011-09-20 | 2011-09-20 | Power generation device based on low-temperature afterheat recovery |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312688A (en) * | 2011-09-20 | 2012-01-11 | 华南理工大学 | Generator utilizing low-temperature afterheat recovery |
| CN109323240A (en) * | 2018-10-11 | 2019-02-12 | 长治市霍家工业有限公司 | Hot water and steam recycle device in a kind of synthesis converter |
| CN110173855A (en) * | 2019-05-29 | 2019-08-27 | 北京隆普智能科技有限公司 | A kind of energy-saving environmental control system in subway station |
-
2011
- 2011-09-20 CN CN2011203521375U patent/CN202280489U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312688A (en) * | 2011-09-20 | 2012-01-11 | 华南理工大学 | Generator utilizing low-temperature afterheat recovery |
| CN102312688B (en) * | 2011-09-20 | 2014-05-07 | 华南理工大学 | Generator utilizing low-temperature afterheat recovery |
| CN109323240A (en) * | 2018-10-11 | 2019-02-12 | 长治市霍家工业有限公司 | Hot water and steam recycle device in a kind of synthesis converter |
| CN110173855A (en) * | 2019-05-29 | 2019-08-27 | 北京隆普智能科技有限公司 | A kind of energy-saving environmental control system in subway station |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120620 Termination date: 20120920 |