CN100547320C - A kind of round-robin method of cooling water - Google Patents
A kind of round-robin method of cooling water Download PDFInfo
- Publication number
- CN100547320C CN100547320C CNB2005100164318A CN200510016431A CN100547320C CN 100547320 C CN100547320 C CN 100547320C CN B2005100164318 A CNB2005100164318 A CN B2005100164318A CN 200510016431 A CN200510016431 A CN 200510016431A CN 100547320 C CN100547320 C CN 100547320C
- Authority
- CN
- China
- Prior art keywords
- water
- temperature
- cooling water
- cooling
- design temperature
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
A kind of round-robin method of cooling water is made of following steps: (1) in this scope, utilizes EGR to recycle cooling water from the initial temperature to the design temperature when water; (2) after the temperature of recirculated cooling water is higher than design temperature, then start the artificial cooling mode; When (3) making water temperature get back to design temperature behind the artificial cooling, continue to utilize EGR to recycle cooling water.Superiority of the present invention: 1, refrigerating efficiency height, the temperature that can reduce recirculated cooling water rapidly satisfies the needs of experiment; 2, water-saving result is remarkable, can save 20-50 cooling water doubly; 3, semiconductor refrigerating is a green refrigeration technology, avoided since the leakage of conventional cold-producing medium to the destruction of atmospheric ozone layer, simultaneously because the use of recirculated cooling water, when changing cooling water, can make full use of water from the part thermal capacitance of inflow temperature design temperature and do not start semiconductor refrigerating, thereby not only economize on water but also economize on electricity; 4, has wide promotion prospect.
Description
(1) technical field:
The invention belongs to refrigeration technology field, particularly relate to a kind of round-robin method of cooling water.
(2) background technology:
Water resources problems is one of distinct issues of 21 century Chinese society sustainable economic development, also is the significant problem of extensive concern in the world wide, is faced with more and more severeer situation.How to find out reasonable, a feasible outlet that can produce the solution water resources problems of good effect again from the weary situation of the water resource plaque of long-term puzzlement Chinese society economic development, be current fish important topic to be researched and solved.Limited because of its water resource, so water scientifically and rationally, all trades and professions are all being explored various water saving measures.In industrial production, water saving technology such as steam condensation reuse, indirect cooling water are recycling, waste water treating and reutilizing that oneself promotes; In public building, widely popularize water-saving cleaners and polishes and technology of middle water recycle, improve and use ratio of water recycle.But at present, the use of experimental project cooling water can be drained many clean waters in many schools chemical laboratory, and this also should be a problem of water saving that merits attention very much.
Up to the present, the mode that cooling water uses is: will feed the experiment glass condenser by hose from the cooling water of running water, cooling water just directly enters sewer after going out condenser, in the middle of this, water except with reaction system have heat exchange, can not bring any other material into, be very clean water so enter the water of sewer actual, and just temperature is slightly than running water enter the mouth out height and oneself.And the consumption of water is very considerable in the experimentation.With the organic chemistry student experimenting is example, experimental period average out to 6-8 hour, in experimentation, need the organic volatile composition of boiling is carried out condensation process, need condensed water, preresearch estimates once, with one group of experiment is example, need about 1 premium on currency of cooling water per minute, experiment was calculated by 6 hours, and whole like this experiment is about 3600 liters both 3.6 cubic metres with cooling water, and full class has 30 groups and will leave simultaneously, as seen the running water that needs the about 98 cubic metres cleaning of the water yield is finished in whole experiment, and this is the consumption of an experimental project in the laboratory, and by such experiment, as seen its water loss is considerable.In addition, also have a lot of physical experiment apparatus also to need cooling water at work, as: vacuum coating and laser generator also need cooling water, and also can only use running water at present as cooling water, suitable water consumption is also arranged, and visible slight cooling water takes care of the pence, and finds out the way of the above-mentioned water of a kind of practicable saving, be very necessary, especially in new lab construction, also should mention great attention this.
(3) summary of the invention:
The objective of the invention is to design a kind of round-robin method of cooling water, the problem that it makes the use of above-mentioned laboratory cooling water can drain many clean waters is solved, and is a kind of practicable laboratory water-saving method.
Technical scheme of the present invention: a kind of round-robin method of cooling water is characterized in that it is made of following steps:
(1) from the initial temperature to the design temperature, in this scope, utilize EGR to recycle cooling water when water;
(2) after the temperature of recirculated cooling water is higher than design temperature, then start the artificial cooling mode;
When (3) making water temperature get back to design temperature behind the artificial cooling, continue to utilize EGR to recycle cooling water.
It can be to utilize the mode of semiconductor refrigerating assembly cooling circulating water or emit the recirculated water mode of supplemented with exogenous running water again that is higher than design temperature in the EGR that the temperature of above-mentioned said recirculated cooling water is higher than the artificial cooling mode that starts behind the design temperature.
The above-mentioned said mode of semiconductor refrigerating assembly cooling circulating water of utilizing is: at first set the delivery port cooling water temperature by intelligence instrument or computer by intelligence instrument, close benefit, drain solenoid valve, the ON cycle pump, the recirculated water that is cooled flows out through outlet valve, when the indication of intelligence instrument measurement coolant water temperature is equal to or higher than design temperature, intelligence instrument sends instruction, high-power DC power supply work, give semiconductor refrigerating assembly power supply refrigeration, when the control instrument indicated temperature is lower than design temperature, dc source stops the semiconductor cooling assembly is powered, the semiconductor refrigerating assembly stops refrigeration work, cooling water enters attemperater by the cooling water circulating device water inlet with water through after utilizing.Above-mentioned said emit be higher than design temperature in the EGR recirculated water again the mode of supplemented with exogenous running water be: make full use of the thermal capacitance that temperature difference produced of water from initial temperature to the target setting temperature, at first connect water supplement port magnetic valve port to running water pipe, close drain solenoid valve, open the water supplement port magnetic valve, to enter the cooling attemperater from the cooling water of running water, observe water level by the liquid level indication, when reaching the requirement water level, close the moisturizing magnetic valve, set cooling water by intelligence instrument and discharge maximum temperature, open cooling water circulating pump, cooling water will be under the effect of circulating pump in the attemperater, experimental facilities is cooled off, when cooling water temperature is lower than design temperature, continue experimental facilities is supplied water, when cooling water temperature is equal to or higher than design temperature, the opening water discharge magnetic valve, at this moment, heated cooling water is discharged from, and prescribes a time limit when reaching under the water level, close drain solenoid valve, repeat the later execution action of above-mentioned unlatching water inlet magnetic valve.
The equipment of above-mentioned cooling water round-robin method is by the semiconductor refrigerating assembly, circulation and water temperature detect intelligence instrument and semiconductor constitutes with dc source, the output that said temperature detects intelligence instrument connects semiconductor with dc source and driving circuit for electromagnetic valve control end, circulation is by attemperater, circulating pump, surge tank, the liquid level indication, water inlet and flowing water Valve, the moisturizing magnetic valve, drain solenoid valve and associated pipe constitute, the water inlet of said circulation by the light water valve with detect by water temperature that the list-directed moisturizing magnetic valve of Intelligent Instrument is in parallel to be constituted, the input of water inlet connects attemperater, the output of attemperater is communicated in the semiconductor refrigerating assembly, the output of semiconductor refrigerating assembly connects the surge tank inlet, the surge tank outlet connects the inlet of circulating pump, and what the outlet of circulating pump connection was in parallel detects the list-directed drain solenoid valve of Intelligent Instrument by the light water valve and by water temperature.
Water temperature in the above-mentioned said cooling water circulating device detects intelligence instrument can connect the COMPUTER DETECTION control system according to 485 connecting lines.
The bottom of above-mentioned said cooling water circulating device can mobile universal wheel easy for installation.
Above-mentioned said semiconductor refrigerating assembly is by the copper cooling jacket, nylon bolt, the wind-cooling heat dissipating sheet, semiconductor chilling plate, fan, copper cooling jacket water inlet and copper cooling jacket water in-out port constitute, said semiconductor chilling plate huyashi-chuuka (cold chinese-style noodles) pastes mutually with the copper cooling jacket, the centre scribbles the cruel coating of thermal conductive silicon, the semiconductor chilling plate hot side pastes mutually with the wind-cooling heat dissipating sheet, the centre scribbles the cruel coating of thermal conductive silicon, the copper cooling jacket is connected by nylon bolt with the wind-cooling heat dissipating sheet, the wind-cooling heat dissipating sheet is connected with fan, and copper cooling jacket water inlet and copper cooling jacket water in-out port are arranged on the copper cooling jacket.
Operation principle of the present invention is: the cooling water circulating device of this based semiconductor Refrigeration Technique has two kinds of working methods, first kind of working method is: utilize circulating water device can save a large amount of running water, wherein, semiconductor refrigerating technology can reach lowers the temperature to cooling water system, simultaneously owing to there is not the running of mechanical mechanism, the reliability of cooling system is improved, but because semiconductor refrigerating is a kind of temperature-difference refrigerating, the temperature of its hot side directly has influence on the efficient of refrigeration, so environment temperature has very confidential relation to its operating efficiency, cooled system temperature is near room temperature the time, the efficient of semiconductor refrigerating is very high, is fit to very much cooling laboratory cooling water.In the use of chemical experiment cooling water, can experimental requirement, set the temperature of experiment with cooling water, in hydronic process, when the outlet temperature that detects cooling water is lower than design temperature, the semiconductor refrigerating assembly is not worked, at this moment, be simple circulation cooling procedure, when detecting cooling water outlet temperature and be higher than design temperature, can only instrument send instruction, high-power low-voltage dc power supply is powered to the semiconductor cooling assembly, make its work, reach the purpose that reduces recirculated water, saved water resource.But reaching so a kind of operational effect will obtain by the consumed power resource.Such working method is the purpose that reaches cooling water by consumed power, but cooling water can be unconfined recycling, plays the purpose of water saving fully.Second kind of working method is: generally from the initial temperature of the cooling water of running water on average about 15 ℃, common way is just directly to have emitted by cooler, and the cooling water of at this moment discharging only exceeds about 0.5 ℃ than inlet, and the temperature of much testing required cooling water only otherwise be higher than the 30 ℃ of requirements that just can satisfy cooling water fully, as seen the mode that holds water is used cooling water, also is conserve water resources effective way.According to above-mentioned situation, can adopt the recirculated cooling water in the experimentation is at first set maximum operation (service) temperature make full use of water from 15 ℃ to the thermal capacitance the design temperature, when the temperature of actual measurement cooling water is lower than design temperature, system will continue to keep the circulation of cooling water, provide cooling water to experimental provision, along with the water that is cooled of the heat energy in the experimental provision is taken away, cooling improves constantly with the temperature of recirculated water, when the temperature of measuring recirculated water high during with the highest design temperature, system sends instruction unpack delivery port magnetic valve, the cooling water that is higher than design temperature is discharged, when the attemperater water level is lower than lowest water level, close the delivery port magnetic valve, open the water inlet magnetic valve simultaneously, the cold water source new from running water constantly replenishes, when the attemperater water level reaches the requirement water level, the water inlet closed electromagnetic valve repeats said process.If cooling water is 10 liters, temperature rises to 35 degree from 15 degree, the heat that chilled water unit absorbed for (Jiao 4.2x103[/ gram. ℃ * 10000*20 " energy of 840 kilojoules, if adopt the instant method that goes out of running water; import and export the temperature difference and be 0.5 and spend, water-saving result is 40 times.For the mode of changing cooling water, then can make full use of water this part thermal capacitance from the inflow temperature to the design temperature, the own cooling water of discharging through heating up, though can lose the part water resource, but,, saved the electric energy that is used to freeze though visible such method can emit the part cooling water compared with the cooling means of the routine 20-50 cooling water doubly of then economizing on water, still played effect clearly, so the method for this cooling water is feasible.
Superiority of the present invention is: 1, refrigerating efficiency height, and needs 2, water-saving result that the temperature that can reduce recirculated cooling water rapidly satisfies experiment are remarkable, can save 20-50 cooling water doubly; 3, semiconductor refrigerating is a green refrigeration technology, avoided since the leakage of conventional cold-producing medium to the destruction of atmospheric ozone layer, simultaneously because the use of recirculated cooling water, when changing cooling water, can make full use of water from the part thermal capacitance of inflow temperature design temperature and do not start semiconductor refrigerating, thereby not only economize on water but also economize on electricity; 4, has wide promotion prospect.
(4) description of drawings:
Accompanying drawing 1 is the equipment therefor structural representation of the round-robin method of the related a kind of cooling water of the present invention.
Accompanying drawing 2 is the workflow schematic diagram of the round-robin method of the related a kind of cooling water of the present invention.
Wherein: 1 is that intelligence instrument 2 is that drain solenoid valve 7 for liquid level indication 8 for water inlet pipe valve 9 for water outlet pipe valve 10 be electric heating tube 11 for surge tank 12 for circulating pump 13 for universal wheel 14 for semiconductor refrigerating assembly 15 be attemperater 16 be 485 connecting lines 17 be COMPUTER DETECTION control system for refrigeration work consumption adjusting knob 5 for moisturizing magnetic valve 6 for functional switch 4 for dc source 3
Accompanying drawing 3 is the semiconductor refrigerating modular construction schematic diagram in the round-robin method equipment therefor of the related a kind of cooling water of the present invention.
Wherein: 14-1 is a copper cooling jacket 14-2 nylon bolt 14-3 wind-cooling heat dissipating sheet 14-4 semiconductor chilling plate 14-5 fan 14-6 copper cooling jacket water inlet 14-7 copper cooling jacket water in-out port
Accompanying drawing 4 is the software control surface chart in the cooling water circulating device of the related based semiconductor Refrigeration Technique of the present invention.
(5) specific embodiment:
Embodiment: a kind of round-robin method of cooling water (seeing Fig. 1-3) is characterized in that it is made of following steps:
(1) from the initial temperature to the design temperature, in this scope, utilize EGR to recycle cooling water when water;
(2) after the temperature of recirculated cooling water is higher than design temperature, then start the artificial cooling mode;
When (3) making water temperature get back to design temperature behind the artificial cooling, continue to utilize EGR to recycle cooling water.
It can be to utilize the mode of semiconductor refrigerating assembly cooling circulating water or emit the recirculated water mode of supplemented with exogenous running water again that is higher than design temperature in the EGR that the temperature of above-mentioned said recirculated cooling water is higher than the artificial cooling mode that starts behind the design temperature.
The above-mentioned said mode of semiconductor refrigerating assembly 14 cooling circulating waters of utilizing is: at first set the delivery port cooling water temperature by intelligence instrument 1 or computer 17 by intelligence instrument, close benefit, drain solenoid valve 5,6, ON cycle pump 12, the recirculated water that is cooled flows out through outlet valve 9, when intelligence instrument 1 measurement coolant water temperature indication is equal to or higher than design temperature, intelligence instrument 1 sends instruction, high-power DC power supply 2 work, give the semiconductor refrigerating assembly 14 power supply refrigeration, when control instrument 1 indicated temperature is lower than design temperature, dc source 2 stops 14 power supplies of semiconductor cooling assembly, semiconductor refrigerating assembly 14 stops refrigeration work, cooling water enters attemperater 15 by cooling water circulating device water inlet 8 with water through after utilizing.
Above-mentioned said emit be higher than design temperature in the EGR recirculated water again the mode of supplemented with exogenous running water be: make full use of the thermal capacitance that temperature difference produced of water from initial temperature to the target setting temperature, at first connect moisturizing magnetic valve 5 ports to running water pipe, close drain solenoid valve 6, open water supplement port magnetic valve 5, to enter cooling attemperater 15 from the cooling water of running water, observe water level by liquid level indication 7, when reaching the requirement water level, close moisturizing magnetic valve 5, set cooling water by intelligence instrument 1 and discharge maximum temperature, open cooling water circulating pump 12, cooling water will be under the effect of circulating pump in the attemperater 15, experimental facilities is cooled off, when cooling water temperature is lower than design temperature, continue experimental facilities is supplied water, when cooling water temperature is equal to or higher than design temperature, opening water discharge magnetic valve 6, at this moment, heated cooling water is discharged from, and prescribes a time limit when reaching under the water level, close drain solenoid valve 6, repeat above-mentioned unlatching moisturizing magnetic valve 5 later execution and move.
The equipment of above-mentioned cooling water round-robin method is by semiconductor refrigerating assembly 14, circulation and water temperature detect intelligence instrument 1 and semiconductor constitutes with dc source 2, the output that said temperature detects intelligence instrument 1 connects semiconductor dc source 2 and driving circuit for electromagnetic valve control end, circulation is by attemperater 15, circulating pump 12, surge tank 10, liquid level indication 7, water inlet and flowing water Valve 8,9, moisturizing magnetic valve 5, drain solenoid valve 6 and associated pipe constitute, the water inlet of said circulation is made of with the moisturizing magnetic valve 5 that is detected intelligence instrument 1 control by water temperature is in parallel light water valve 8, the input of water inlet connects attemperater 15, the output of attemperater 15 is communicated in semiconductor refrigerating assembly 14, the output of semiconductor refrigerating assembly 14 connects surge tank 11 inlets, the inlet of surge tank 11 outlet connection circulating pumps 12, what the outlet connection of circulating pump 12 was in parallel detects the drain solenoid valve 6 that intelligence instrument 1 is controlled by light water valve 9 and by water temperature.
Water temperature in the above-mentioned said cooling water circulating device detects intelligence instrument 1 can connect COMPUTER DETECTION control system 17 according to 485 connecting lines 16.
The bottom of above-mentioned said cooling water circulating device can mobile universal wheel 13 easy for installation.
Above-mentioned said semiconductor refrigerating assembly is by copper cooling jacket 14-1, nylon bolt 14-2, wind-cooling heat dissipating sheet 14-3, semiconductor chilling plate 14-4, fan 14-5, copper cooling jacket water inlet 14-6 and copper cooling jacket water in-out port 14-7 constitute, said semiconductor chilling plate 14-4 huyashi-chuuka (cold chinese-style noodles) pastes mutually with copper cooling jacket 14-1, the centre scribbles the cruel coating of thermal conductive silicon, semiconductor chilling plate 14-4 hot side pastes mutually with wind-cooling heat dissipating sheet 14-3, the centre scribbles the cruel coating of thermal conductive silicon, copper cooling jacket 14-1 is connected by nylon bolt 14-2 with wind-cooling heat dissipating sheet 14-3, wind-cooling heat dissipating sheet 14-3 is connected with fan 14-5, and copper cooling jacket water inlet 14-6 and copper cooling jacket water in-out port 14-7 are arranged on the copper cooling jacket 14-1.
Claims (4)
1, a kind of round-robin method of cooling water is characterized in that it is made of following steps:
(1) from the initial temperature to the design temperature, in this scope, utilize EGR to recycle cooling water when water;
(2) after the temperature of recirculated cooling water is higher than design temperature, then start the artificial cooling mode;
When (3) making water temperature get back to design temperature behind the artificial cooling, continue to utilize EGR to recycle cooling water.
2, according to the round-robin method of the said a kind of cooling water of claim 1, it can be to utilize the mode of semiconductor refrigerating assembly cooling circulating water or emit the recirculated water mode of supplemented with exogenous running water again that is higher than design temperature in the EGR that the temperature that it is characterized in that said recirculated cooling water is higher than the artificial cooling mode that starts behind the design temperature.
3, round-robin method according to the said a kind of cooling water of claim 2, it is characterized in that the said mode of semiconductor refrigerating assembly cooling circulating water of utilizing is: at first set the delivery port cooling water temperature by intelligence instrument by intelligence instrument or computer, close benefit, drain solenoid valve, the ON cycle pump, the recirculated water that is cooled flows out through outlet valve, when the indication of intelligence instrument measurement coolant water temperature is equal to or higher than design temperature, intelligence instrument sends instruction, high-power DC power supply work, give semiconductor refrigerating assembly power supply refrigeration, when the intelligence instrument indicated temperature is lower than design temperature, dc source stops the semiconductor cooling assembly is powered, the semiconductor refrigerating assembly stops refrigeration work, and cooling water enters attemperater by the cooling water circulating device water inlet with water through after utilizing.
4, round-robin method according to the said a kind of cooling water of claim 2, it is characterized in that said emit be higher than design temperature in the EGR recirculated water again the mode of supplemented with exogenous running water be: make full use of the thermal capacitance that temperature difference produced of water from initial temperature to the target setting temperature, at first connect moisturizing magnetic valve port to running water pipe, close drain solenoid valve, open the moisturizing magnetic valve, to enter the cooling attemperater from the cooling water of running water, observe water level by the liquid level indication, when reaching the requirement water level, close the moisturizing magnetic valve, set cooling water by intelligence instrument and discharge maximum temperature, open cooling water circulating pump, cooling water will be under the effect of circulating pump in the attemperater, experimental facilities is cooled off, when cooling water temperature is lower than design temperature, continuation is supplied water to experimental facilities, when cooling water temperature is equal to or higher than design temperature, the opening water discharge magnetic valve, at this moment, heated cooling water is discharged from, prescribe a time limit when reaching under the water level, close drain solenoid valve, repeat the later execution action of above-mentioned unlatching moisturizing magnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100164318A CN100547320C (en) | 2005-11-25 | 2005-11-25 | A kind of round-robin method of cooling water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100164318A CN100547320C (en) | 2005-11-25 | 2005-11-25 | A kind of round-robin method of cooling water |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101080874A Division CN101116834B (en) | 2005-11-25 | 2005-11-25 | Cooling water circulation device based on semiconductor refrigeration technique |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1776326A CN1776326A (en) | 2006-05-24 |
| CN100547320C true CN100547320C (en) | 2009-10-07 |
Family
ID=36765974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100164318A Expired - Fee Related CN100547320C (en) | 2005-11-25 | 2005-11-25 | A kind of round-robin method of cooling water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100547320C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101140115A (en) * | 2006-09-04 | 2008-03-12 | 孟瑞 | Refrigerate heat-production method and equipment thererof |
| CN106248024B (en) * | 2016-09-29 | 2018-12-28 | 马鞍山钢铁股份有限公司 | Suitable for thickness measuring instrument and cooling device and cooler switching method that cooler is changeable |
| CN106984249A (en) * | 2017-04-12 | 2017-07-28 | 浙江工业大学 | Early warning type cooling water circulating device for laboratory |
| CN108723885A (en) * | 2018-08-06 | 2018-11-02 | 天长市永鑫制冷设备有限公司 | A kind of cooling device of air conditioner parts numerical control machine |
| CN113654289A (en) * | 2021-08-27 | 2021-11-16 | 重庆中元汇吉生物技术有限公司 | Reagent refrigeration device and refrigeration method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1635316A (en) * | 2004-12-24 | 2005-07-06 | 冯太和 | System and method for cooling by recirculated cooling water and heating using heat therefrom in heat power plant |
-
2005
- 2005-11-25 CN CNB2005100164318A patent/CN100547320C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1635316A (en) * | 2004-12-24 | 2005-07-06 | 冯太和 | System and method for cooling by recirculated cooling water and heating using heat therefrom in heat power plant |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1776326A (en) | 2006-05-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100547320C (en) | A kind of round-robin method of cooling water | |
| CN104445481B (en) | A kind of waste heat electricity-water cogeneration system | |
| CN101116834B (en) | Cooling water circulation device based on semiconductor refrigeration technique | |
| CN1811303A (en) | Single-effect heat pump/double-effect cooling absorption set and combined heat, electricity and cold supply system | |
| CN101398260A (en) | Closed cooling tower | |
| CN203550206U (en) | Bath waste heat recycling heat pump hot water system | |
| CN113465014B (en) | Double-source water supply system for gradient utilization of bath wastewater heat energy and control method thereof | |
| CN200949954Y (en) | Cooling water circulation apparatus based on semi-conductor cooling technology | |
| CN201666196U (en) | Waste heat recovery device of diesel generator set | |
| CN201373677Y (en) | Closed cooling tower | |
| CN102095215A (en) | Prefabricated radiant heating system | |
| CN204806735U (en) | Distributed energy system of heat engine drive VM circulation heat pump | |
| CN210799287U (en) | Novel high-efficient scale control thermostatic type air compressor machine waste heat recovery system | |
| CN2730129Y (en) | Environmental protection type aquiculture water-temp. regulating means by directly pumping-in geothermal water | |
| CN102168869A (en) | Electric instant heating type solar heat supply heating system | |
| CN202813884U (en) | Solar energy ground source heat combined zero-carbon-emission heating and refrigeration system | |
| CN104329837A (en) | Intensive heat-exchange heat pump system | |
| CN202902612U (en) | Two-stage bathing wastewater recovery device | |
| CN108332419A (en) | The special heat energy recycling hot water supply system of bathing pool | |
| CN2828612Y (en) | Energy-saving equipment for producing hot water of computer control piston coding water set | |
| CN201327250Y (en) | Energy-saving capacity-increase cleaning system of equipment room precision air conditioner | |
| CN205505179U (en) | Bathroom heating system | |
| CN202074696U (en) | Low-temperature air injection enthalpy increasing heat pump water heater | |
| CN201251235Y (en) | Hot water supply system for small district | |
| CN101178253A (en) | Cooling water waste heat pump water heating machine and system thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Lu Feng Document name: Notification of Passing Examination on Formalities |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091007 Termination date: 20091225 |