CN206572676U - Double cold source refrigerating systems that natural cooling unit is combined with centrifugal water chillers - Google Patents
Double cold source refrigerating systems that natural cooling unit is combined with centrifugal water chillers Download PDFInfo
- Publication number
- CN206572676U CN206572676U CN201720221231.4U CN201720221231U CN206572676U CN 206572676 U CN206572676 U CN 206572676U CN 201720221231 U CN201720221231 U CN 201720221231U CN 206572676 U CN206572676 U CN 206572676U
- Authority
- CN
- China
- Prior art keywords
- water
- cooling unit
- centrifugal
- natural cooling
- pipeline
- 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.)
- Active
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 107
- 238000001816 cooling Methods 0.000 title claims abstract description 96
- 239000006200 vaporizer Substances 0.000 claims abstract description 23
- 239000000498 cooling water Substances 0.000 claims description 5
- 230000008676 import Effects 0.000 claims description 4
- 239000008400 supply water Substances 0.000 claims description 4
- 230000005494 condensation Effects 0.000 claims 1
- 238000009833 condensation Methods 0.000 claims 1
- 230000005611 electricity Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000004378 air conditioning Methods 0.000 description 10
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 9
- 239000012530 fluid Substances 0.000 description 7
- 230000003750 conditioning effect Effects 0.000 description 5
- 230000007704 transition Effects 0.000 description 5
- 238000005119 centrifugation Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
Landscapes
- Other Air-Conditioning Systems (AREA)
- Air Conditioning Control Device (AREA)
Abstract
Double cold source refrigerating systems that a kind of natural cooling unit is combined with centrifugal water chillers, centrifugal refrigerating machines condenser side is provided with open cooling tower, vaporizer side is provided with the natural cooling unit arranged side by side with it, the delivery port of the natural cooling unit is connected with centrifugal refrigerating machines vaporizer side water inlet, the delivery port of the centrifugal refrigerating machines vaporizer side is connected with water supply endless tube influent side, and the water outlet side of the water supply endless tube is connected with tail end air conditioner device water inlet again.The combination of centrifugal refrigerating machines and the natural cooling unit and open cooling tower, is arranged as required to 1 N groups, they and be listed in water supply and backwater endless tube on.The system uses different operational modes to provide the chilled water for meeting design parameter requirement for tail end air conditioner device under different outdoor temperatures.The system can realize the beneficial effects such as owner investment is few, operating cost is low, water saving corrosion-free to equipment and pipeline, economize on electricity while cooling tower freezed in winter is avoided.
Description
Technical field
The utility model is related to a kind of refrigeration system, is particularly applied to the refrigeration system of data center.
Background technology
With the development of data center's scale and integrated level, the information technoloy equipment power density such as server is growing day by day, heat density
Sharp increase, in order to ensure data center apparatus stable operation, it is necessary to keep 365 days constant temperature and humidities inside data center, i.e.,
Data center needs long-term cooling, passes through the ambient parameters such as the temperature, humidity, air purity of Air-condition system control data center
The design operating specification of equipment is met, resulting huge energy consumption already turns into data center and develops unavoidable problem.
In order to reduce consumption of data center, experts scholar just proposes the general of free cooling (Free Cooling)
Read.At present, professional generally has an optimistic view of the water cooling air conditioning system of heat exchange efficiency height, simple system, small investment and good energy-conserving effect.
Wherein, centrifugal water cold air conditioning system because its have refrigerating capacity big and the Energy Efficiency Ratio of whole system high (general Energy Efficiency Ratio is 4 to 6
Between) the advantages of the preferred option as current large-scale data center of new generation.And construction unit considers from investment cost angle,
It is select the centrifugal water cold air conditioning system with open cooling tower more.
《State Council cultivates the decision with development strategy new industry on accelerating》In point out, ultra-large type data center should
The preferential area built in very cold, energy abundance.The northern area of such as China, night in winter minimum temperature is reachable-
20~-30 DEG C, even temperature is lower during extreme weather, and the low temperature continuous time is long, is especially suitable for using free refrigeration skill
Art.But such huge inherent advantage, the principal element but used as limitation centrifugal water cold air conditioning system, only because of centrifugation
There is the excessive risk frozen in cold winter in the open cooling tower of formula water cooling air conditioning system.If used in northern area
Centrifugal water cold air conditioning system, it is necessary to take antifreezing measures, it is highly concentrated to be that this owner need to add into cooling-tower circulating water and pipeline
The anti-icing fluid of degree, this measure not only increases the investment of owner, and corrosion, most importantly antifreezing effect can be also produced to equipment and pipeline
It is unsatisfactory, often because anti-icing fluid volatilization is serious, cause anti-icing fluid concentration not enough, once supplement is not in time, whether flow over
Tower or countercurrent tower, all necessarily occur icing phenomenon, cause cooling tower not run well, now the working fluid in pipeline
Also converted into ice, pipeline just has the danger of expansion rhegma, so as to cause safe operation and operational risk.
In addition, traditional centrifugal water cold air conditioning system also has the following disadvantages：(1) handpiece Water Chilling Units and cooling tower are complete
365 days years ran without interruption, and power consumption is big；(2) cooling tower is in open type, and shower water directly exchanges with air, shower water it is elegant,
Evaporation is more, and water consumption is big；(3) open system, preventing freeze in winter liquid volatilization is serious, and ethylene glycol consumption is big.
Utility model content
The purpose of this utility model is to provide that a kind of owner investment is few, operating cost is low, it is corrosion-free to equipment and pipeline,
Double cold source refrigerating systems that the energy-efficient natural cooling units such as water saving, economize on electricity are combined with centrifugal water chillers.The system
Mainly natural cooling unit and centrifugal refrigerating machines are connected in whole air-conditioner water system, in different outdoor temperatures
Under, using different operational modes, provided by two kinds of different low-temperature receivers for tail end air conditioner device and meet the cold of design parameter requirement
Freeze water.
The utility model mainly includes：Open cooling tower, centrifugal refrigerating machines, natural cooling unit, tail end air conditioner dress
Put and connect the pipeline and valve of each appliance arrangement.Wherein, centrifugal refrigerating machines condenser side is provided with open cooling tower, should
Cooling tower delivery port is connected by the pipeline provided with cooling water circulating pump with centrifugal refrigerating machines condenser side water inlet, should be from
The delivery port of core type handpiece Water Chilling Units condenser side is connected by pipeline with open cooling tower water inlet, constitutes complete be recycled back to
Road.
The centrifugal cooling unit vaporizer side is provided with the air-cooled natural cooling unit or dry and cold device arranged side by side with it, both
Referred to as natural cooling unit.Plate type heat exchanger and water pump are provided with inside best natural cooling unit.The natural cooling unit
Delivery port is connected by pipeline with centrifugal refrigerating machines vaporizer side water inlet, and the centrifugal refrigerating machines vaporizer side goes out
The mouth of a river is connected by pipeline with water supply endless tube influent side.The water outlet side of the water supply endless tube enters further through pipeline with tail end air conditioner device
The mouth of a river is connected, and the delivery port of the tail end air conditioner device is connected with backwater endless tube influent side by pipeline, the backwater endless tube water outlet side
It is connected further through the pipeline provided with chilled water circulating pump with the water inlet of above-mentioned natural cooling unit, constitutes complete be recycled back to
Road.Temperature sensor separately is set on water supply endless tube, for monitoring system supply water temperature.Above-mentioned natural cooling unit into and out of
It is provided between mouth pipe on bypass pipe, bypass pipe and is provided with valve B, is separately provided with valve A on natural cooling unit inlet tube,
It also is provided with bypass pipe, bypass pipe being provided with valve D between centrifugal refrigerating machines vaporizer side import and export pipe, separately in centrifugation
Valve C is set on formula handpiece Water Chilling Units vaporizer side outlet, and the valve of arrangement above can be electrically operated valve or manual
Valve.The combination of centrifugal refrigerating machines and the natural cooling unit and open cooling tower, is arranged as required to 1-N groups, they
And be listed in water supply and return pipe on.Preferably supply water and return pipe is using water supply and backwater endless tube form.
The course of work of the present utility model is summarized as follows：The operation of natural cooling unit and centrifugal refrigerating machines is basis
What outdoor temperature was switched over.
When in the winter time, open cooling tower and centrifugal refrigerating machines are closed, natural cooling unit isolated operation.Now, certainly
So the electrically operated valve A on cooling unit water inlet pipe is opened, and bypath valve B is closed, centrifugal refrigerating machines vaporizer side by-passing valve
Door D is opened, and the valve C on centrifugal refrigerating machines vaporizer side outlet is closed.Under the operational mode, the recirculated water of system
Without centrifugal refrigerating machines, only recirculated water is cooled using outdoor aturally-cold air by natural cooling unit, it is ensured that
The circulating water temperature for feeding to tail end air conditioner device reaches design parameter requirement.
In summer, natural cooling unit is closed, open cooling tower and centrifugal refrigerating machines operation.Now, it is naturally cold
But the electrically operated valve A on unit water inlet pipe is closed, and bypath valve B is opened, centrifugal refrigerating machines vaporizer side bypass motor-driven valve
Door D is closed, and the electrically operated valve C on centrifugal refrigerating machines vaporizer side outlet is opened, under the operational mode, the circulation of system
Water is entered by open cooling tower and centrifugal refrigerating machines without natural cooling unit using recirculated cooling water to system circulation water
Row cooling, it is ensured that the circulating water temperature for feeding to tail end air conditioner device reaches design parameter requirement.
In spring, the conditioning in Transition Season in autumn, natural cooling unit, open cooling tower and centrifugal refrigerating machines triple combination fortune
OK.Now, the valve A on natural cooling unit water inlet pipe is opened, and bypath valve B is closed, centrifugal refrigerating machines vaporizer side
Bypath valve D is closed, and the valve C on centrifugal refrigerating machines vaporizer side outlet is opened, and system circulation water first passes through nature
Unit is cooled down, then by centrifugal refrigerating machines evaporator.Under the relatively low operating mode of conditioning in Transition Season outdoor temperature, open cooling tower is closed
Close, still individually produce the chilled water for meeting parameter request, system for system using outdoor aturally-cold air by natural cooling unit
Recirculated water is when flowing through centrifugal refrigerating machines evaporator, and handpiece Water Chilling Units do not work.When conditioning in Transition Season outdoor temperature is higher, from
The cold water temperature that so cooling unit is produced can not meet design parameter, and now natural cooling unit is used as centrifugal refrigerating machines
Forecooler, by the temperature reduction of recirculated water to a certain extent, remaining heat is total to by open cooling tower and centrifugal refrigerating machines
With undertaking, triple combination produces cold water, it is ensured that the circulating water temperature for feeding to tail end air conditioner device reaches design parameter requirement.
The utility model has the following advantages that and beneficial effect compared with prior art：
1st, the conditioning in Transition Season relatively low with temperature in the winter time, the outdoor Cryogenic air of full utilization produces the freezing for meeting design parameter
Water, without opening cooling tower and centrifugal refrigerating machines, has been greatly shortened the run time of cooling tower and handpiece Water Chilling Units, section
Electricity, water-saving result are notable.Even in the higher conditioning in Transition Season of temperature, natural cooling unit still can as handpiece Water Chilling Units precooling
Device is used, and improves the refrigerating efficiency of handpiece Water Chilling Units, reduces power consumption.By taking the centrifuge of a 2550kw refrigerating capacity as an example, electrical power consumed
For 450kw, year power consumption 3942000kwh when not using natural cooling unit.After natural cooling unit, comprehensive year power consumption
Measure as 2890800kwh, year economize on electricity 1051200kwh, the electricity charge based on 1 yuan/degree, year power cost saving 1,050,000.
2nd, winter cooling tower is out of service, it is to avoid many harm that cooling tower freezed in winter is brought, without to cooling
Tower takes antifreezing measures, reduces the consumption of anti-icing fluid, reduces system operation maintenance cost.
3rd, under winter operation pattern, water system uses closed circulating pipeline, it is possible to prevente effectively from anti-icing fluid volatilizees, reduces
The consumption of ethylene glycol.
4th, plate type heat exchanger and water pump are provided with inside the natural cooling unit that the utility model is selected, by circulating frozen water pipe
Road System Partition is into the independent closed loop of pipeline portions outside primary side room and secondary side interior conduit part two, wherein once
Pipeline is existed only in inside natural cooling unit outside side room, the length of pipeline outside primary side room is substantially reduced, during winter operation
Only need to take antifreezing measures to natural unit internal duct part, so as to greatly reduce the stake of the anti-icing fluid such as ethylene glycol
Amount, is that owner has saved great amount of cost.
5th, compared with the conventional centrifugal water cold air conditioning system with heat-exchanger rig, the utility model is by needed for system
The equipment such as plate type heat exchanger and water pump is placed in inside natural cooling unit, is that pump house has saved plate type heat exchanger and one cycle
The position of pump, while being that owner has saved early stage civil engineering cost, breaches place limitation, is provided for the following dilatation of system
Condition.
5th, the utility model control principle is clear, when Various Seasonal replaces, it is only necessary to control respective valves to can be achieved double
The free switching of low-temperature receiver, makes full use of the mutual supplement with each other's advantages of double low-temperature receivers, centrifugal water cold air conditioning system is pushed away in northern area application
Extensively it is possibly realized.
Brief description of the drawings
Fig. 1 is flow simplified schematic diagram of the present utility model.
In figure：1st, open cooling tower, 2, cooling water circulating pump, 3, centrifugal refrigerating machines, 4, natural cooling unit, 5, cold
Freeze water-circulating pump, 6, supply water temperature sensor, 7, water supply endless tube, 8, backwater endless tube, 9, tail end air conditioner device, 10, valve A, 11, valve
B, 12, valve C, 13, valve D.
Embodiment
The technical scheme of this patent is described in further detail with reference to embodiment.
Illustrate letter with double cold source refrigerating system flows that centrifugal water chillers are combined in the natural cooling unit shown in Fig. 1
In figure, the condenser side of centrifugal refrigerating machines 3 is provided with open cooling tower 1, and the cooling tower delivery port passes through provided with cooling water circulation
The pipeline of pump 2 is connected with centrifugal refrigerating machines condenser side water inlet, the delivery port of the centrifugal refrigerating machines condenser side
It is connected by pipeline with open cooling tower water inlet, constitutes complete circulation loop.The centrifugal refrigerating machines vaporizer side
Provided with the air-cooled natural cooling unit 4 arranged side by side with it, the natural cooling unit is that the patent No. is 201620054116.8《It is a kind of
The modularization natural cooling unit of container-type》, natural cooling unit inside is provided with plate type heat exchanger and water pump.The nature
The delivery port of cooling unit is connected by pipeline with centrifugal refrigerating machines vaporizer side water inlet, and the centrifugal refrigerating machines are steamed
The delivery port of hair device side is connected by pipeline with the influent side of water supply endless tube 7.The water outlet side of the water supply endless tube is further through pipeline and end
The water inlet of air-conditioning device 9 is held to be connected, the delivery port of the tail end air conditioner device is connected with the influent side of backwater endless tube 8 by pipeline, should
Backwater endless tube water outlet side is connected further through the pipeline provided with chilled water circulating pump 5 with the water inlet of above-mentioned natural cooling unit, structure
Into complete circulation loop.Temperature sensor 6 is separately set on water supply endless tube.Above-mentioned natural cooling unit import and export pipe it
Between be provided with bypass pipe, be provided with valve B11 on bypass pipe, be separately provided with valve A10 on natural cooling unit inlet tube, from
It also is provided with bypass pipe, bypass pipe being provided with valve D13 between core type handpiece Water Chilling Units vaporizer side import and export pipe, separately in centrifugation
Valve C12 is set on formula handpiece Water Chilling Units vaporizer side outlet, and the valve of arrangement above is electrically operated valve.It is described centrifugal cold
The combination of water dispenser group and natural cooling unit and open cooling tower, is arranged as required to 2 groups, they and be listed in water supply and backwater
On endless tube.
Claims (4)
1. double cold source refrigerating systems that a kind of natural cooling unit is combined with centrifugal water chillers, centrifugal refrigerating machines condensation
Device side is provided with open cooling tower, and the cooling tower delivery port is cold by the pipeline provided with cooling water circulating pump and centrifugal refrigerating machines
Condenser side water inlet is connected, and the delivery port of the centrifugal refrigerating machines condenser side passes through pipeline and open cooling tower water inlet phase
Even, complete circulation loop is constituted, it is characterised in that：The centrifugal cooling unit vaporizer side is provided with the nature arranged side by side with it
Unit is cooled down, the delivery port of the natural cooling unit is connected by pipeline with centrifugal refrigerating machines vaporizer side water inlet, should
The delivery port of centrifugal refrigerating machines vaporizer side is connected by pipeline with water supply endless tube influent side, the water outlet side of the water supply endless tube
It is connected further through pipeline with tail end air conditioner device water inlet, delivery port and the backwater endless tube influent side of the tail end air conditioner device pass through
Pipeline is connected, the backwater endless tube water outlet side further through the pipeline provided with chilled water circulating pump and above-mentioned natural cooling unit water inlet
Mouthful it is connected, constitutes complete circulation loop, temperature sensor separately is set on water supply endless tube, enter in above-mentioned natural cooling unit,
It is provided between outlet on bypass pipe, bypass pipe and is provided with valve B, is separately provided with valve A on natural cooling unit inlet tube,
Also be provided with bypass pipe, bypass pipe being provided with valve D between centrifugal refrigerating machines vaporizer side import and export pipe, separately from
Valve C, centrifugal refrigerating machines and the natural cooling unit and open type are set on core type handpiece Water Chilling Units vaporizer side outlet
The combination of cooling tower, is arranged as required to 1-N groups, they and be listed in water supply and backwater endless tube on.
2. double cold source refrigerating systems that natural cooling unit according to claim 1 is combined with centrifugal water chillers, its
It is characterised by：Plate type heat exchanger and water pump are provided with inside natural cooling unit.
3. double cold source refrigerating systems that natural cooling unit according to claim 1 is combined with centrifugal water chillers, its
It is characterised by：The valve set between equipment and pipeline uses electrically operated valve or hand-operated valve.
4. double cold source refrigerating systems that natural cooling unit according to claim 1 is combined with centrifugal water chillers, its
It is characterised by：Supply water and water return pipeline is using water supply and backwater endless tube form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720221231.4U CN206572676U (en) | 2017-03-08 | 2017-03-08 | Double cold source refrigerating systems that natural cooling unit is combined with centrifugal water chillers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720221231.4U CN206572676U (en) | 2017-03-08 | 2017-03-08 | Double cold source refrigerating systems that natural cooling unit is combined with centrifugal water chillers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206572676U true CN206572676U (en) | 2017-10-20 |
Family
ID=60057421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720221231.4U Active CN206572676U (en) | 2017-03-08 | 2017-03-08 | Double cold source refrigerating systems that natural cooling unit is combined with centrifugal water chillers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206572676U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107062472A (en) * | 2017-03-08 | 2017-08-18 | 大连国霖技术有限公司 | Double cold source refrigerating systems that natural cooling unit is combined with centrifugal water chillers |
| CN109539432A (en) * | 2018-10-15 | 2019-03-29 | 平安科技（深圳）有限公司 | Air conditioner cooling water circulation system and air conditioning cooling water loop control scheme |
| CN115143656A (en) * | 2022-05-27 | 2022-10-04 | 杭氧集团股份有限公司 | Closed circulating water system with high-temperature season cold compensation |
| CN119042918A (en) * | 2024-10-28 | 2024-11-29 | 深圳市森辉智能自控技术有限公司 | Cooling water heat exchange system optimization control system and method |
-
2017
- 2017-03-08 CN CN201720221231.4U patent/CN206572676U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107062472A (en) * | 2017-03-08 | 2017-08-18 | 大连国霖技术有限公司 | Double cold source refrigerating systems that natural cooling unit is combined with centrifugal water chillers |
| CN109539432A (en) * | 2018-10-15 | 2019-03-29 | 平安科技（深圳）有限公司 | Air conditioner cooling water circulation system and air conditioning cooling water loop control scheme |
| CN115143656A (en) * | 2022-05-27 | 2022-10-04 | 杭氧集团股份有限公司 | Closed circulating water system with high-temperature season cold compensation |
| CN119042918A (en) * | 2024-10-28 | 2024-11-29 | 深圳市森辉智能自控技术有限公司 | Cooling water heat exchange system optimization control system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107062472A (en) | Double cold source refrigerating systems that natural cooling unit is combined with centrifugal water chillers | |
| CN104279667B (en) | A kind of phase change energy storage air conditioning system | |
| CN103175276A (en) | Air-cooling direct-current frequency-conversion magnetic levitation nature cold source water chilling unit | |
| CN106765783B (en) | Energy-saving high-precision wine cellar air conditioning system combining water cold accumulation and natural cold source | |
| CN206572676U (en) | Double cold source refrigerating systems that natural cooling unit is combined with centrifugal water chillers | |
| CN107355926A (en) | High-temperature refrigeration coupling accumulation of energy cold source air conditioning system and its control method based on independent temperature-humidity control | |
| CN210772395U (en) | Multi-energy time sequence complementary centralized heating and cooling system | |
| CN109855218B (en) | Integrated closed evaporative cooling-condensing chiller | |
| CN207006431U (en) | Data center natural cooling unit and centrifugal refrigerating machines combined refrigeration system | |
| CN203323266U (en) | Air-cooling direct-current variable-frequency magnetic-levitation water chilling unit with natural cold source | |
| CN102538105A (en) | Air-source water-solution heat pump type refrigerating and heating system of air-conditioner and control method thereof | |
| CN207113100U (en) | High-temperature refrigeration coupling accumulation of energy cold source air conditioning system based on independent temperature-humidity control | |
| CN201803419U (en) | Integrated type multi-connected cold and hot source central air-conditioning system | |
| CN208671416U (en) | A kind of refrigeration heating system using low-temperature industrial recirculated cooling water | |
| CN208124521U (en) | Independent temperature-humidity control system with free cooling tower cooling supply | |
| CN207600014U (en) | The double cold source air conditioners of annual operation of air-cooled compression-type refrigeration and sweat cooling | |
| CN202581632U (en) | Heat-pump air conditioning unit of evaporating type condenser | |
| CN208425085U (en) | Data center computer room whole year with antifreezing water tank runs air-conditioning cooling device | |
| CN104566726A (en) | A new high-efficiency static ice-making indirect ice-melting cooling air-conditioning system for households | |
| CN219976602U (en) | Water-cooling multi-connected air conditioning system for subway station | |
| CN205119519U (en) | Solar water heating system and heat pump heat refrigerating system | |
| CN204084685U (en) | With the soil source heat pump system of nature cooling function | |
| CN207610304U (en) | The winter cold summer grade natural style circulatory system | |
| CN207515288U (en) | The efficient central air-conditioning refrigeration system of cold storage condensation | |
| CN205316561U (en) | Modularization natural cooling unit of container formula |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 116000 Room 402, Room 24-5, Building 6-2 Yingchun Street, Dalian Huayuankou Economic Zone, Liaoning Province Patentee after: DALIAN GREEN INTEGRATED TECHNOLOGIES CO., LTD. Address before: 116000 No. 47, No. 2, No. 16, No. 3, Wuyi Road, Shahekou District, Dalian City, Liaoning Province Patentee before: DALIAN GREEN INTEGRATED TECHNOLOGIES CO., LTD. |