CN202853187U - Lithium bromide absorption refrigeration plant with function of mechanical vibration auxiliary heat and mass transfer - Google Patents
Lithium bromide absorption refrigeration plant with function of mechanical vibration auxiliary heat and mass transfer Download PDFInfo
- Publication number
- CN202853187U CN202853187U CN2012205214840U CN201220521484U CN202853187U CN 202853187 U CN202853187 U CN 202853187U CN 2012205214840 U CN2012205214840 U CN 2012205214840U CN 201220521484 U CN201220521484 U CN 201220521484U CN 202853187 U CN202853187 U CN 202853187U
- Authority
- CN
- China
- Prior art keywords
- absorber
- cam
- mass transfer
- heat
- lithium bromide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Images
Classifications
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
-
- 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]
- Y02B30/62—Absorption based systems
Abstract
The utility model discloses a lithium bromide absorption refrigeration plant with a function of mechanical vibration auxiliary heat and mass transfer. A heat exchange tube in an absorber is enabled to produce microvibration by introducing external mechanical energy into the absorber, so that the thickness of a membrane is reduced, heat and mass transfer coefficient effect is increased, and absorption efficiency of the refrigeration plant is improved. A mechanical vibration device which can enable the heat exchange tube of the absorber to produce vibration is connected on the absorber. The mechanical vibration device comprises a motor, a cam and a driven member, wherein the motor is installed on the top of the absorber, and the driven member is matched with the cam and connected with the heat exchange tube of the absorber. The motor drives the driven member through the cam to enable the heat exchange tube to produce the vibration, so that the thickness of the membrane is reduced, heat and mass transfer effect is increased, absorption efficiency is greatly improved, and refrigeration effect is improved. The shield variable frequency motor and the exchangeable cam are adopted, and amplitude and frequency of the heat exchange tube can be adjusted, so that using demands of different working conditions are met.
Description
Technical field
The utility model relates to a kind of lithium bromide water absorption refrigerating plant, particularly relates to a kind of lithium bromide water absorption refrigerating plant with mechanical oscillation aid in heat transfer mass transfer function.
Background technology
The absorption refrigeration unit has without the environment public hazards, uses the advantages such as variety of energy sources is many, is acknowledged as the environmental protection refrigeration air-conditioner.And Absorption Refrigerator adopts heat energy as driving force, and power consumption is less, for balance electrical network peak valley certain contribution is arranged.Simultaneously, development and social materials growth in the living standard along with modern science and technology, air-conditioning has become one of modern sign, lithium-bromide absorption-type refrigerating machine belongs to the environmental protection type refrigeration device, develop very rapidly both at home and abroad at recent two decades, become one of main equipment of large public building central air-conditioning.
Absorber is parts maximum in the absorption system, and heat exchange area accounts for about 40% of the total heat exchange area of unit, and its performance directly restricts overall structure and the performance of refrigeration unit, is one of most important parts in the absorption system.Yet in absorption process, owing to heat and mass exists simultaneously, so that absorption process and complexity thereof.People have proposed all theories to absorption process mechanism at present, and what wherein accept for people more widely is the double-film theory that nineteen twenty-four Whiteman-Lewis proposes.Because steam is wanted successively could be absorbed by bromize lithium concentrated solution by air film and liquid film in absorption process, so the air film in the absorption process and liquid film just become the resistance of heat and mass.Therefore, increase the heat and mass effect by the thickness that reduces air film and liquid film, can improve the absorption efficiency of absorber, improve refrigeration.But, also do not have ripe technical scheme at present.
The utility model content
The purpose of this utility model is for the technological deficiency that exists in the prior art, can introduce in the absorber and provide a kind of by exterior mechanical, so that the heat exchanger tube in the absorber produces little vibration, destroyed the formation condition of air film and liquid film, thereby reduce the thickness of air film and liquid film, increase the heat and mass transfer coefficient effect, improve the lithium bromide water absorption refrigerating plant of absorption efficiency.
For realizing that the technical scheme that the purpose of this utility model adopts is:
A kind of lithium bromide water absorption refrigerating plant with mechanical oscillation aid in heat transfer mass transfer function, comprise condenser, generator, evaporimeter, absorber, solution heat exchanger, it is characterized in that, be connected with the vibrative mechanical vibrator of the heat exchanger tube that can make absorber on the described absorber.
Described mechanical vibrator comprises motor, the cam that is installed on absorber overhead and the driven member that cooperates with cam, described motor is connected with cam by transmission mechanism, the described driven member that cooperates with cam is connected with the heat exchanger tube of described absorber, makes the heat exchanger tube of absorber produce vibration by the cam driven driven member.
Described motor is the shielding variable-frequency motor, the drive link of the described driven member that cooperates with cam for being fixedly connected with the heat exchanger tube of described absorber, described cam is for can produce the transverse and longitudinal direction vibration cam of horizontal and vertical vibration, the vialog that is connected with described absorber heat exchanging pipe is installed on the described absorber shell, and described vialog is connected with described shielding variable-frequency motor.
Described mechanical vibrator comprises calutron, lever, pole, produce the magnetic effect between described calutron and described lever one end, described lever and described pole are hinged, described lever is take described pole as fulcrum, described lever one end is fixedly connected with the heat exchanger tube of described absorber, between described lever and the described calutron back-moving spring is installed.
The vialog that is connected with described absorber heat exchanging pipe is installed on the housing of described absorber, and described vialog is connected with described calutron by vibrating controller.
The heat exchanger tube of described absorber is connected with cooling water system with taking over employing spiral flexible steel in flat section tubing.
The lower end of described absorber heat exchanging pipe with support damping spring and be connected, the other end of described support damping spring is connected with gripper shoe on being connected in described absorber shell.
Be respectively equipped with flowmeter, pressure sensor and thermocouple at evaporimeter with the import and export that chilled-water system, absorber are connected with cooling water system; The import and export that is connected with cooling water system at condenser is respectively equipped with flowmeter and thermocouple; Bromize lithium concentrated solution entrance point at absorber is provided with flowmeter and pressure sensor; Introduce the thermal source import and export of described generator and the import and export of solution heat exchanger and be respectively arranged with thermocouple; Be respectively arranged with pressure sensor in described condenser, generator, evaporimeter and the absorber; Above-mentioned flowmeter, pressure sensor and thermocouple everywhere is connected with system controller and is connected, and whole device is realized measuring and control.
Be provided with the visual observation window on the described absorber shell.
Compared with prior art, the beneficial effects of the utility model are:
1, is connected with mechanical vibrator on the absorber in the refrigerating plant of the present utility model, can make the heat exchanger tube of absorber produce little vibration, destroyed the formation condition of air film and liquid film, thereby reduce the thickness of air film and liquid film film, increased the heat and mass effect, absorption efficiency has a more substantial increase, thereby has improved refrigeration.
2, the mechanical vibrator in the refrigerating plant of the present utility model is comprised of motor, cam, driven member, make the heat exchanger tube of absorber produce vibration by the cam driven driven member, perhaps adopt the mechanical vibrator that is formed by calutron and lever, simple in structure, realize easily.
3, adopt shielding variable-frequency motor and interchangeable cam in the refrigerating plant of the present utility model, so that the amplitude of heat-exchange tube and frequency can be regulated, satisfied the instructions for use of different operating modes.
4, can observe absorption process by the visual observation window in the refrigerating plant of the present utility model, easy to use.
Description of drawings
Figure 1 shows that the schematic diagram of the lithium bromide water absorption refrigerating plant cam vibration embodiment that the utlity model has mechanical oscillation aid in heat transfer mass transfer function;
Figure 2 shows that the schematic diagram of the embodiment of the mechanical vibrator that calutron and lever form.
Among the figure: 1. liquid mixing box, 2. absorber, 3. motor, 4. driven member, 5. cam, 6. vialog, 7. solution heat exchanger, 8. generator, 9. vavuum pump, 10. vacuum controller, 11. vacuum meters, 12. condensers, 13. vacuum meter, 14. vavuum pumps, 15. vacuum controllers, 16. evaporimeter, 17. water pumps, 18. pressure sensors, 19. flowmeter, 20. thermocouples, 21. spiral flexible steel in flat section tubing, 22. gripper shoe, 23. support damping spring, 24. canned motor pumps, 25. back-moving spring, 26. pole, 27. levers, 28. calutrons.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Lithium bromide water absorption refrigerating plant with mechanical oscillation aid in heat transfer mass transfer function of the present utility model is to have increased mechanical vibrator on the basis of existing lithium bromide water absorption refrigerating plant, and mechanical vibrator can adopt the various structures form.
Embodiment 1
The schematic diagram of the embodiment of cam vibration as shown in Figure 1.Comprise condenser 12, generator 8, evaporimeter 16, absorber 2, solution heat exchanger 7, liquid mixing box 1, the thermal source of external heat is installed in the bromize lithium dilute solution of described generator, the concentrated solution outlet of described generator 8 is connected with the concentrated solution import of described solution heat exchanger 7, the dilute solution inlet of described generator is connected with the outlet of the weak solution of described solution heat exchanger, the dilute solution inlet of described solution heat exchanger 7 is connected with the weak solution outlet of described absorber bottom by canned motor pump 24, the concentrated solution outlet of described solution heat exchanger 7 is connected with the concentrated solution import of liquid mixing box 1, the concentrated solution outlet of described liquid mixing box is connected with the inlet of the spray equipment of absorber, and the dilute solution inlet of described liquid mixing box is connected with the taphole of described canned motor pump.The condensation-water drain of condenser lower end is connected with spray equipment on the evaporimeter by pipeline.Described condenser is connected with cooling water system with absorber and is connected, and described evaporimeter is connected with chilled-water system.
Bromize lithium dilute solution in the generator is by the heating of external heat source, and moisture evaporation wherein becomes concentrated solution.Concentrated solution is undertaken entering liquid mixing box 1 after the heat exchange by solution heat exchanger 7 and weak solution, and the bromize lithium dilute solution of absorber bottom is carried out entering liquid mixing box 1 after the supercharging to it by canned motor pump 24, weak solution with enter absorber after concentrated solution is mixed.The bromize lithium concentrated solution that enters absorber sprays at the absorber heat exchanging tube-surface by spray equipment, and forms film on the heat exchanger tube surface.The bromize lithium concentrated solution on the heat exchanger tube surface of absorber becomes weak solution absorb the steam that is evaporated from evaporimeter after, be gathered in absorber bottom, then pass through canned motor pump 24 to its supercharging, and undertaken entering generator after the heat exchange by solution heat exchanger and concentrated solution, thereby form circulation.Can produce a large amount of steam after the bromize lithium dilute solution heating in the generator, steam enters condenser and cooling water carries out heat exchange, is condensed into aqueous water.Condensed water enters evaporimeter and sprays, and the water smoke that forms behind the spray covers the heat exchange pipe of evaporator surface, and in its surface evaporation, with the heat absorption in the chilled water.The water that sprays is gathered in base of evaporator, again re-starts spray after the supercharging by water pump 17, makes aqueous water reciprocation cycle in evaporimeter.The bromize lithium concentrated solution that the steam that evaporation forms in evaporimeter is absorbed in the device absorbs, and the lithium-bromide solution behind the absorption steam enters generator and again moisture evaporated away, and the steam that is evaporated enters condenser condenses again, thereby forms circulation.
In order to improve heat and mass efficient, the utility model is equipped with the vibrative mechanical vibrator of the heat exchanger tube that can make absorber at absorber.Make the heat exchanger tube of absorber produce little vibration by mechanical vibrator, reduce the thickness of air film and liquid film, thereby improve heat and mass efficient.
Mechanical vibrator in the present embodiment comprises motor 3, the cam 5 that is installed on absorber overhead and the driven member 4 that cooperates with cam, described motor 3 is connected with cam 5 by transmission mechanism, the described driven member 4 that cooperates with cam is connected with the heat exchanger tube of described absorber, drives driven member 4 by cam 5 and makes the heat exchanger tube of absorber produce vibration.The cam kind can be divided into the three types that makes heat-exchange tube produce extensional vibration, oscillation crosswise and transverse and longitudinal direction vibration, and the cam in the present embodiment is for can produce the transverse and longitudinal direction vibration cam of horizontal and vertical vibration.
For the ease of the vibration of control absorber heat exchanging pipe, described motor 3 is shielding variable-frequency motor, the drive link of the described driven member that cooperates with cam for being fixedly connected with the heat exchanger tube of described absorber.The vialog 6 that is connected with described absorber heat exchanging pipe is installed on the described absorber shell, described vialog 6 is connected with described shielding variable-frequency motor 3, the result that vialog is measured passes to the shielding variable-frequency motor, and the frequency of control shielding variable-frequency motor is with the vibration frequency of control heat exchanger tube.Simultaneously, can adjusting amplitude by the cam of replacing different size.For the ease of observing the situation in the absorber, be provided with the visual observation window on the described absorber shell.
The heat exchanger tube of described absorber 2 is connected with cooling water system with taking over employing spiral flexible steel in flat section tubing 21.
The lower end of described absorber heat exchanging pipe with support damping spring 23 and be connected, the other end of described support damping spring 23 is connected with gripper shoe 22 on being connected in described absorber shell.Support damping spring 23 and when playing cushioning effect, also have certain supporting role.
The import and export that is connected with cooling water system at evaporimeter and chilled-water system, absorber is respectively equipped with flowmeter 19, pressure sensor 18 and thermocouple 20.The import and export that is connected with cooling water system at condenser is respectively equipped with flowmeter and thermocouple.Bromize lithium concentrated solution entrance point at absorber is provided with flowmeter and pressure sensor; Introduce the thermal source import and export of described generator and the import and export of solution heat exchanger and be respectively arranged with thermocouple.Thermocouple adopts armour formula thermocouple.Be respectively arranged with pressure sensor in described condenser, generator, evaporimeter and the absorber.Above-mentioned flowmeter, pressure sensor and thermocouple everywhere is connected with system controller and is connected, and whole device is realized measuring and control, these instrument is set links to each other with system controller so that more accurate to the control and measurement of whole device respectively with sensor.
The schematic diagram of the embodiment of the mechanical vibrator that is comprised of calutron and lever as shown in Figure 2, described mechanical vibrator comprises calutron 28, lever 27, pole 26, produce the magnetic effect between described calutron 28 and described lever 27 1 ends, described lever 27 and described pole 26 are hinged, described lever is take described pole as fulcrum, described lever 27 1 ends are fixedly connected with the heat exchanger tube of described absorber 2, between described lever and the described calutron back-moving spring 25 are installed.By the unlatching of control calutron, 28 pairs of levers of calutron 27 are produced attract, and then make the heat exchanger tube vibration-generating of absorber.
In order to realize automatic control, the vialog 6 that is connected with described absorber heat exchanging pipe is installed on the housing of described absorber 2, described vialog 6 is connected with described calutron 28 by vibrating controller.The result that vialog is measured passes to vibrating controller, and the switching frequency of vibrating controller control calutron is with the vibration frequency of control heat exchanger tube.By changing the position of pole 26, can change amplitude.
Device of the present utility model is except adopting two kinds of embodiment 1 and embodiment 2 to realize the mode of vibration, also can adopt other modes to realize little vibration of absorber heat exchanging pipe, generation condition by flutter failure air film and liquid film, thereby reduce the thickness of air film and liquid film, improve the heat and mass effect.
The above only is preferred embodiment of the present utility model; should be noted that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (9)
1. lithium bromide water absorption refrigerating plant with mechanical oscillation aid in heat transfer mass transfer function, comprise condenser, generator, evaporimeter, absorber, solution heat exchanger, it is characterized in that, be connected with the vibrative mechanical vibrator of the heat exchanger tube that can make absorber on the described absorber.
2. the lithium bromide water absorption refrigerating plant with mechanical oscillation aid in heat transfer mass transfer function according to claim 1, it is characterized in that, described mechanical vibrator comprises motor, the cam that is installed on absorber overhead and the driven member that cooperates with cam, described motor is connected with cam by transmission mechanism, the described driven member that cooperates with cam is connected with the heat exchanger tube of described absorber, makes the heat exchanger tube of absorber produce vibration by the cam driven driven member.
3. the lithium bromide water absorption refrigerating plant with mechanical oscillation aid in heat transfer mass transfer function according to claim 2, it is characterized in that, described motor is the shielding variable-frequency motor, the drive link of the described driven member that cooperates with cam for being fixedly connected with the heat exchanger tube of described absorber, described cam is for can produce the transverse and longitudinal direction vibration cam of horizontal and vertical vibration, the vialog that is connected with described absorber heat exchanging pipe is installed on the described absorber shell, and described vialog is connected with described shielding variable-frequency motor.
4. the lithium bromide water absorption refrigerating plant with mechanical oscillation aid in heat transfer mass transfer function according to claim 1, it is characterized in that, described mechanical vibrator comprises calutron, lever, pole, produce the magnetic effect between described calutron and described lever one end, described lever and described pole are hinged, described lever is take described pole as fulcrum, and described lever one end is fixedly connected with the heat exchanger tube of described absorber, between described lever and the described calutron back-moving spring is installed.
5. the lithium bromide water absorption refrigerating plant with mechanical oscillation aid in heat transfer mass transfer function according to claim 4, it is characterized in that, the vialog that is connected with described absorber heat exchanging pipe is installed on the housing of described absorber, and described vialog is connected with described calutron by vibrating controller.
6. each described lithium bromide water absorption refrigerating plant with mechanical oscillation aid in heat transfer mass transfer function in 5 according to claim 2 is characterized in that, the heat exchanger tube of described absorber is connected with cooling water system with taking over and adopts the spiral flexible steel in flat section tubing.
7. the lithium bromide water absorption refrigerating plant with mechanical oscillation aid in heat transfer mass transfer function according to claim 6, it is characterized in that, the lower end of described absorber heat exchanging pipe with support damping spring and be connected, the other end of described support damping spring is connected with gripper shoe on being connected in described absorber shell.
8. the lithium bromide water absorption refrigerating plant with mechanical oscillation aid in heat transfer mass transfer function according to claim 7, it is characterized in that, be respectively equipped with flowmeter, pressure sensor and thermocouple at evaporimeter with the import and export that chilled-water system, absorber are connected with cooling water system; The import and export that is connected with cooling water system at condenser is respectively equipped with flowmeter and thermocouple; Bromize lithium concentrated solution entrance point at absorber is provided with flowmeter and pressure sensor; Introduce the thermal source import and export of described generator and the import and export of solution heat exchanger and be respectively arranged with thermocouple; Be respectively arranged with pressure sensor in described condenser, generator, evaporimeter and the absorber; Above-mentioned flowmeter, pressure sensor and thermocouple everywhere is connected with system controller and is connected, and whole device is realized measuring and control.
9. the lithium bromide water absorption refrigerating plant with mechanical oscillation aid in heat transfer mass transfer function according to claim 8 is characterized in that, is provided with the visual observation window on the described absorber shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205214840U CN202853187U (en) | 2012-10-12 | 2012-10-12 | Lithium bromide absorption refrigeration plant with function of mechanical vibration auxiliary heat and mass transfer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205214840U CN202853187U (en) | 2012-10-12 | 2012-10-12 | Lithium bromide absorption refrigeration plant with function of mechanical vibration auxiliary heat and mass transfer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202853187U true CN202853187U (en) | 2013-04-03 |
Family
ID=47984374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205214840U Withdrawn - After Issue CN202853187U (en) | 2012-10-12 | 2012-10-12 | Lithium bromide absorption refrigeration plant with function of mechanical vibration auxiliary heat and mass transfer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202853187U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878719A (en) * | 2012-10-12 | 2013-01-16 | 天津商业大学 | Lithium bromide absorbing refrigerating equipment with function of mechanical vibration to assist heat and mass transfer |
-
2012
- 2012-10-12 CN CN2012205214840U patent/CN202853187U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878719A (en) * | 2012-10-12 | 2013-01-16 | 天津商业大学 | Lithium bromide absorbing refrigerating equipment with function of mechanical vibration to assist heat and mass transfer |
| CN102878719B (en) * | 2012-10-12 | 2014-08-06 | 天津商业大学 | Lithium bromide absorbing refrigerating equipment with function of mechanical vibration to assist heat and mass transfer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201764761U (en) | Negative pressure vaporizing condenser | |
| CN201949793U (en) | Absorption-type freeze drying machine driven by waste heat of air compressor | |
| CN202853187U (en) | Lithium bromide absorption refrigeration plant with function of mechanical vibration auxiliary heat and mass transfer | |
| CN201368575Y (en) | Heat pipe dehumidification heat exchanger and air conditioner made thereby | |
| CN102878719B (en) | Lithium bromide absorbing refrigerating equipment with function of mechanical vibration to assist heat and mass transfer | |
| CN104315746A (en) | Directly-evaporated type solar jetting refrigerating system | |
| CN102853577B (en) | Lithium bromide absorption type refrigerating device with impact and vibration auxiliary heat and mass transfer function | |
| CN108716802A (en) | A kind of handware processing energy conservation and environmental protection cooling device | |
| CN202853207U (en) | Lithium bromide absorption refrigeration plant with function of shock vibration auxiliary heat and mass transfer | |
| CN205783963U (en) | A kind of absorption system with injection regulator | |
| CN204513626U (en) | A kind of thermostatic type solution dehumidification regeneration cycle system | |
| CN203691852U (en) | One-piece data center machine room | |
| CN206103382U (en) | Rapid condensation mvr sewage treatment plant | |
| CN205448030U (en) | Novel environmental protection wall -hanging air conditioner | |
| CN201262494Y (en) | Plate pipe evaporation type condensation water chilling unit with filling material | |
| CN201093802Y (en) | Heat pump with heat pipe exchanger | |
| CN203704446U (en) | Boiling and condensation integrated solution regenerating device | |
| CN209147503U (en) | A kind of adjustable freezing water apparatus of baffle plate | |
| CN112763250A (en) | Performance test system and test method for air-cooled evaporation composite type transverse flow closed cooling tower | |
| CN206563445U (en) | Heat pump with double-condenser | |
| CN100458311C (en) | Split solar low-temperature grain storage absorption refrigeration system | |
| CN208901688U (en) | A kind of evaporating type condensing device | |
| CN2667414Y (en) | Residual heat type single-effect lithium bromide absorption type cold water, cold/heat water machine set | |
| CN104864740A (en) | Dry gas-water cold-heat exchange device | |
| CN205027157U (en) | Industry is cooling device for cooling tower |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130403 Effective date of abandoning: 20140806 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20130403 Effective date of abandoning: 20140806 |
|
| RGAV | Abandon patent right to avoid regrant |