CN203719008U - Chilled water storage device - Google Patents
Chilled water storage device Download PDFInfo
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- CN203719008U CN203719008U CN201420074850.1U CN201420074850U CN203719008U CN 203719008 U CN203719008 U CN 203719008U CN 201420074850 U CN201420074850 U CN 201420074850U CN 203719008 U CN203719008 U CN 203719008U
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Abstract
The utility model relates to a chilled water storage device which comprises a water storage tank as well as a water distribution pipeline, an upper water distributor and a lower water distributor which are arranged in the water storage tank, wherein the upper water distributor and the lower water distributor are communicated with the water distribution pipeline; the upper water distributor and/or the lower water distributor comprise/comprises a plurality of horizontally arranged water distribution discs; each water distribution disc comprises a first water inlet and outlet port located at the upper part or the lower part, a second water inlet and outlet port located on the periphery and an interlayer communicating the first water inlet and outlet port with the second water inlet and outlet port; the diameter of each water distribution disc is far smaller than the geometric size of the corresponding water distribution section of the water storage tank; the upper water distribution section of the water storage tank is uniformly and fully covered with the water distribution discs of the upper water distributor; and the lower water distribution section of the water storage tank is uniformly and fully covered with the water distribution discs of the lower water distributor. According to the chilled water storage device, broken stream lengths in the water distribution section per unit are similar or the quantity of the water distribution discs is equal, so that water can flow in and out of the water storage tank slowly and uniformly, a stable thermocline with an appropriate thickness can be maintained, and the cold storage efficiency is improved.
Description
Technical field
The utility model relates to energy storage system, more particularly, relates to a kind of water cold accumulation device.
Background technology
In building energy consumption, the energy consumption of HVAC accounts for 60%.The energy consumption of air-conditioning embodies obvious seasonality, to building the electric load peak valley distribution of annual and every day, plays decisive role.In current central air-conditioning transformation, water Cool Storage Technology, due to features such as it is simple to main frame requirement, structural reduction, operation maintenance convenience, is subject to industry and more and more payes attention to.Water Cool Storage Technology utilizes electricity price between peak and valley, in the low ebb electricity price period, cold is stored in water, and the peak of power consumption period is used the cryogenic freezing water extraction storing cold for idle call by day.When air-conditioning service time and non-air-conditioning service time and electrical network peak and low ebb are synchronizeed, in the time of just the idle call electric weight in electrical network rush hour can being transferred to electrical network low ebb, use, reach the object of power cost saving.
In the chilled water storage system of central air-conditioning, except the incidence relation of cold accumulation system and main frame, the performance of water-locator is a large key factor that affects entire system performance, and can the water distribution of water-locator effectively control thermoclinic formation, by the cold-storage efficiency of direct decision systems.Chilled water storage system in correlation technique discloses the water-locator of various ways, but still has the uneven problem of water distribution that water distribution blind area causes, or complex structure, high in cost of production is not enough.
Utility model content
The technical problems to be solved in the utility model is, a kind of improved water cold accumulation device is provided.
For solving the problems of the technologies described above, the utility model has adopted following technical scheme: a kind of water cold accumulation device is provided, comprise cistern and be arranged at water distribution pipeline, upper water distributor and the lower water-dispensing device in described cistern, described upper water distributor and described lower water-dispensing device are all connected with described water distribution pipeline; Described upper water distributor and/or described lower water-dispensing device comprise most horizontally disposed water distribution disks, each water distribution disk comprise be positioned at top or bottom the first intake-outlet, be positioned at the second intake-outlet of periphery and the interlayer that the first intake-outlet is communicated with the second intake-outlet; The diameter of described water distribution disk is all much smaller than the physical dimension in the corresponding water distribution cross section of described cistern, and the water distribution disk of described upper water distributor is evenly covered with the upper water distribution cross section of described cistern, the water distribution disk of described lower water-dispensing device is evenly covered with the lower water distribution cross section of described cistern.
Preferably, described water distribution disk comprises that plectane and parallel interval are arranged in the lower plectane of described upper plectane below, the middle part of described upper plectane or lower plectane is formed with described the first intake-outlet, the periphery of described upper plectane and described lower plectane defines described the second intake-outlet, and described upper plectane and described lower plectane interval form described interlayer.
Preferably, the height of described interlayer is adjustable.
Preferably, described water distribution disk comprises the telescopic connection part that upper plectane is connected with lower plectane.
Preferably, in unit under water distribution cross section and/or unit the diffusing length in water distribution cross section quite or the quantity of water distribution disk equate.
Preferably, the size of described most water distribution disks is not exclusively equal.
Preferably, the diameter of described water distribution disk with the physical dimension in the corresponding water distribution cross section of described cistern not on an order of magnitude.
Preferably, the quantity of the quantity of the water distribution disk of described upper water distributor and the water distribution disk of described lower water-dispensing device is not etc.
Preferably, the band height of the band height of the water distribution disk of described upper water distributor and the water distribution disk of described lower water-dispensing device is not etc.
Preferably, described water distribution pipeline comprises standpipe, the adiabatic partition, upper distributive pipe, lower distributive pipe, hot water water main and cold water water main, described standpipe is erected in the diapire central authorities of described cistern, described adiabatic the partition is arranged at the middle part in described standpipe, described upper distributive pipe is connected with the top of standpipe, described lower distributive pipe is connected with the bottom of described standpipe, described hot water water main is connected the top of described standpipe with the outside of described cistern, described cold water water main is connected the bottom of described standpipe with the outside of described cistern, described upper distributive pipe and described lower distributive pipe include at least one-level, described upper water distributor and described lower water-dispensing device are connected with the final stage of described upper distributive pipe and described lower distributive pipe respectively.
The beneficial effects of the utility model: be evenly covered with corresponding water distribution cross section by most water distribution disks, diffusing length in the unit's of making water distribution cross section quite or the quantity of water distribution disk equate, and then make water can slowly and equably pass in and out cistern, to keep a stable and suitable mesolimnion of thickness, improved cold-storage efficiency.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the longitudinal profile structural representation of the water cold accumulation device in some embodiment of the utility model;
Fig. 2 is the layout schematic diagram of upper water distributor shown in Fig. 1;
Fig. 3 is the longitudinal profile structural representation of the water distribution disk of upper water distributor shown in Fig. 1;
Fig. 4 is the layout schematic diagram of lower water-dispensing device shown in Fig. 1;
Fig. 5 is the longitudinal profile structural representation of the water distribution disk of lower water-dispensing device shown in Fig. 1;
Fig. 6 is the layout schematic diagram of the upper water distributor of the water cold accumulation device in other embodiment of the utility model.
The specific embodiment
Below in conjunction with specific embodiment and Figure of description, the utility model is described in further details.
Fig. 1 shows the water cold accumulation device 1 in some embodiment of the utility model, and it can be applicable in HVAC, and this water cold accumulation device 1 comprises cistern 10 and is arranged at water distribution pipeline 20, upper water distributor 30 and the lower water-dispensing device 40 in cistern 10.
Together consult Fig. 2, it is cylindric that cistern 10 can be in certain embodiments, and it comprises circular diapire 11, the cylindrical lateral wall 12 being connected with diapire 11 and the roof 13 being connected with sidewall 12.
Water distribution pipeline 20 can comprise standpipe 21, adiabatic partition 22, upper distributive pipe 23, lower distributive pipe 24, hot water water main 25 and cold water water main 26 in certain embodiments.Standpipe 21 is erected in diapire 11 central authorities of cistern 10, and an aspect is used for delivering hot water and cold water, on the other hand for upper distributive pipe 23, lower distributive pipe 24, upper water distributor 30 and lower water-dispensing device 40 provide support, and the steadiness of lift structure.Adiabatic 22 middle parts that are arranged in standpipe 21 that cut off, are separated into the adiabatic upper and lower cutting off by standpipe 21, prevent hot and cold water heat exchange.
Upper distributive pipe 23 is connected with the top of standpipe 21, and lower distributive pipe 24 is connected with the bottom of standpipe 21.Hot water water main 25 is connected the top of standpipe 21 with the outside of cistern 10, cold water water main 26 is connected the bottom of standpipe 21 with the outside of cistern 10.Upper distributive pipe 23 and lower distributive pipe 24 include at least one-level, and upper water distributor 30 and lower water-dispensing device 40 are connected with the final stage of upper distributive pipe 23 and lower distributive pipe 24 respectively.The material of upper distributive pipe 23, lower distributive pipe 24, upper water distributor 30 and lower water-dispensing device 30 is chosen according to actual needs, take safety, anticorrosion, withstand voltage and low-cost be object, can adopt but be not limited to and make by the material such as galvanized pipe or aluminium-plastic pipe.
This water cold accumulation device 1 utilizes the characteristic of water density maximum when approaching 4 ℃, rely on density contrast to realize the natural layering cold-storage of cistern 10 interior hot and cold waters, keep the piston type motion of cistern 10 interior water carry out cold-storage and let cool, avoid cold water and hot water longitudinally to mix the loss causing.Owing to raising along with water temperature, the density of water reduces gradually.For this reason, make the water that temperature is high by the water distribution mouth of upper distributive pipe 23 and upper water distributor 30, slowly pass in and out the top of cistern 10, make the water that temperature is low by the water distribution mouth of lower distributive pipe 24 and lower water-dispensing device 40, slowly pass in and out the bottom of cistern 10.
Again as shown in Figures 1 and 2, upper water distributor 30 is positioned at the top of water-division pipeline 23 in certain embodiments, and it can comprise most water distribution disks 31.The physical dimension of water distribution disk 31 need be determined according to actual cold-storage flow and pressure, and particularly, the diameter of each water distribution disk 31 is much smaller than the physical dimension in the corresponding water distribution cross section of cistern 10.Preferably, the diameter of each water distribution disk 31 with the physical dimension in the corresponding water distribution cross section of cistern 10 not on an order of magnitude.
This majority water distribution disk 31 is evenly covered with the upper water distribution cross section of cistern 10, it is the size at the interval of these water distribution disks 31 on upper water distribution cross section, minimize not causing the prerequisite of adverse effect to be issued to normal Inlet and outlet water, diffusing length in the unit's of making water distribution cross section quite or the quantity of water distribution disk 31 equate, thereby eliminate or significantly reduce the water distribution blind area on upper water distribution cross section, reaching the effect of current-sharing water distribution.And then make the water that temperature is high can slowly and equably pass in and out by upper distributive pipe 23 and upper water distributor 30 top of cistern 10, to keep a stable and suitable mesolimnion of thickness, improved cold-storage efficiency.
Being evenly arranged of this majority water distribution disk 31, has lengthened the fluid flow characteristics length of upper water distributor 30, and total water distribution length of upper water distributor 30 is to adopt single big disk water distribution
doubly, wherein, the number that n is water distributing tray.Be conducive to reduce Reynolds number and the Froude number of Inlet and outlet water, also reduce the disturbance to cistern 10 interior existing water, play the effect that maintains and control mesolimnion thickness.
As shown in Figure 3, each water distribution disk 31 comprises plectane 311, parallel interval and is arranged in the lower plectane 312 of plectane 311 belows and some connectors 313 that upper plectane 311 is connected with lower plectane 312.The middle part of lower plectane 312 offers the first intake-outlet 314, the periphery interval of the periphery of upper plectane 311 and lower plectane 312 forms the second intake-outlet 315, and the interval that upper plectane 311 and lower plectane are 312 forms the interlayer 316 that the first intake-outlet 314 is connected with the second intake-outlet 315.These some connectors 313 are equally spaced arranged at the periphery of plectane 311 and lower plectane 312, and upper plectane 311 is combined securely with lower plectane 312.Preferably, these some connectors 313 are for extension type structure, so that the spacing between upper plectane 311 and lower plectane 312 is adjustable, to adapt to the demand of different occasions.Particularly, can design according to the flow of actual Inlet and outlet water and pressure.Preferably, the height of the interlayer 316 of the length of upper distributive pipe 23 and caliber, water distribution disk 31 and the diameter of water distribution disk 31 meet natural layering Froude number and are less than or equal to 1 and the requirement of laminar flow Reynolds number.
Together consult Fig. 1 and Fig. 4, lower water-dispensing device 40 is positioned at the below of lower water-division pipeline 24 in certain embodiments, and it can comprise most water distribution disks 41.The diameter of each water distribution disk 41 is all much smaller than the corresponding water distribution cross section geometry of cistern 10, preferably, the diameter of each water distribution disk 41 with the physical dimension in the corresponding water distribution cross section of cistern 10 not on an order of magnitude.
This majority water distribution disk 41 is evenly covered with the lower water distribution cross section of cistern 10, it is the size at the interval of these water distribution disks 41 on lower water distribution cross section, minimize not causing the prerequisite of adverse effect to be issued to normal Inlet and outlet water, diffusing length in the unit's of making water distribution cross section quite or the quantity of water distribution disk equate, thereby eliminate or significantly reduce the water distribution blind area on lower water distribution cross section, reaching the effect of current-sharing water distribution.And then make the water that temperature is low by lower distributive pipe 24 and lower water-dispensing device 40, slowly and equably pass in and out the bottom of cistern 10, to keep a stable and suitable mesolimnion of thickness, improved cold-storage efficiency.
Being evenly arranged of this majority water distribution disk 41, has lengthened the fluid flow characteristics length of lower water-dispensing device 40, and total water distribution length of lower water-dispensing device 40 is to adopt single big disk water distribution
doubly, wherein, the number that n is water distributing tray.Thereby, be conducive to reduce Reynolds number and the Froude number of Inlet and outlet water, also reduce the disturbance to cistern 10 interior existing water, play the effect that maintains and control mesolimnion thickness.Understandably, between every adjacent two water distribution disks 41 with leave predetermined be spaced apart good.
In certain embodiments, the quantity of this water distribution disk 41, structure, size and material all can be identical with the water distribution disk 31 of upper water distributor 30.The quantity of water distribution disk 41 and size also can be unequal with quantity and the size of upper water distributor 30, specifically to see that the sectional dimension of actual discharge and cistern 10 determines, for example, when big up and small down or up-small and down-big conical of cistern 10, both quantity or size are unequal.
Together consult Fig. 5, each water distribution disk 41 comprises plectane 411, parallel interval and is arranged in the lower plectane 412 of plectane 411 belows and some connectors 413 that upper plectane 411 is connected with lower plectane 412.The middle part of upper plectane 411 offers the first intake-outlet 414, the periphery interval of the periphery of upper plectane 411 and lower plectane 412 forms the second intake-outlet 415, and the interval that upper plectane 411 and lower plectane are 412 forms the interlayer 416 that the first intake-outlet 414 is connected with the second intake-outlet 415.These some connectors 413 are equally spaced arranged at the periphery of plectane 411 and lower plectane 412, and upper plectane 411 is combined securely with lower plectane 412.Preferably, these some connectors 413 are for extension type structure, so that the spacing between upper plectane 411 and lower plectane 412 is adjustable, to adapt to the demand of different occasions.Particularly, can design according to the flow of actual Inlet and outlet water and pressure.Preferably, the height of the interlayer 416 of the length of lower distributive pipe 24 and caliber, water distribution disk 41 and the diameter of water distribution disk 41 meet natural layering Froude number and are less than or equal to 1 and the requirement of laminar flow Reynolds number.
In some cases, when cistern 10 is released cold flow and is obviously greater than cold-storage flow, release cold when initial, hot water backwater enters the top of cistern 10 through upper water distributor 23, first the mesolimnion in top is carried out to disturbance, in order to reduce this disturbance, the quantity of the water distribution disk 31 of upper water distributor 30 can be greater than the quantity of the water distribution disk 41 of lower water-dispensing device 40, or the geometric properties of the water distribution disk 31 of upper water distributor 30 (the as above interval height of 312 of plectane 311 and lower plectanes, the disk size of water distribution disk 31) different from lower water-dispensing device 40, its objective is to meet to reduce and release the cold needs to mesolimnion disturbance.
Understandably, can be also in certain embodiments upper water distributor 30 and lower water-dispensing device 40 the two one of adopt most water distribution disks to carry out water distribution, the two another of upper water distributor 30 and lower water-dispensing device 40 adopts other mode to carry out water distribution.
Below in conjunction with operation principle, water cold accumulation device 1 is described further.
In cold-storage and discharging cold course, warm water is corresponding respectively to flow out and flows to cistern 10 from upper distributive pipe 23 and upper water distributor 30, and cold water is corresponding respectively, from lower distributive pipe 24 and lower water-dispensing device 40, flows into and flow out cistern, forming as much as possible the motion of integrated piston type up and down of the water of natural layering.Particularly, in process of cool, warm water flows out from upper distributive pipe 23 and upper water distributor 30, cold water is distributive pipe 24 and lower water-dispensing device 40 inflows from cistern 10, form one and be positioned at the cold water layer that cistern 10 bottoms and thickness progressively increase, upwards promote hot water and flow out through top and the hot water water main 25 of standpipe 21 from upper distributive pipe 23 and upper water distributor 30; In releasing cold process, cold water flows out from lower distributive pipe 24 and lower water-dispensing device 40, bottom and cold water water main 26 through standpipe 21 flow out, warm water after heat exchange from the hot water water main 25 of cistern 10 and the top of standpipe 21 through distributive pipe 23 and upper water distributor 30 enter cistern 10, form the higher backwater zone of temperature that one slowly thickened and floated on top.
In cistern 10, for water being entered reposefully with gravity current or flowing out cistern 10, key is applicable water-locator to be set respectively at hot water or cold water's import and export of cistern 10, interior evenly at cistern 10 with the current of guaranteeing water outlet and backwater, slowly, disturbance is little, can not destroy and in cistern 10, divide the mesolimnion of insulating water and cold water and effectively control its thickness, water outlet can not mix mutually with backwater, it is not transferring energy of cold water and hot water, make to move or move down on water integrated piston type, to guarantee cold-storage efficiency.This just requires the water distribution manner of the water-locator in cistern 10 to meet theoretical requirement, i.e. the requirement that fluid current-sharing distributes and slowly flows into.
The water-locator of the water cold accumulation device 1 in some embodiment of the utility model adopts the structural design of water distribution disk, water outlet and backwater all will be cushioned through the interval between water distribution disk, the kinetic energy of its Inlet and outlet water can access sufficient release, make Inlet and outlet water meet the requirement of slow Laminar Flow, in cistern, form evenly, single-piece piston current slowly, reduce the mixing of hot water and cold water, improved the efficiency of cold-storage.
Understandably, the water cold accumulation device 1 in some embodiment of the utility model is applicable to the cistern 10 of various shapes, and its concrete operation principle of implementing is as above described in embodiment.For example, Fig. 6 shows rectangular cistern 10a in, and the upper water distributor 30a in it is matrix and is arranged in cistern 10a.
It should be pointed out that for those skilled in the art, in several improvements and modifications that do not depart under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (10)
1. a water cold accumulation device, comprises cistern and is arranged at water distribution pipeline, upper water distributor and the lower water-dispensing device in described cistern, and described upper water distributor and described lower water-dispensing device are all connected with described water distribution pipeline; It is characterized in that, described upper water distributor and/or described lower water-dispensing device comprise most horizontally disposed water distribution disks, each water distribution disk comprise be positioned at top or bottom the first intake-outlet, be positioned at the second intake-outlet of periphery and the interlayer that the first intake-outlet is communicated with the second intake-outlet; The diameter of described water distribution disk is all much smaller than the physical dimension in the corresponding water distribution cross section of described cistern, and the water distribution disk of described upper water distributor is evenly covered with the upper water distribution cross section of described cistern, the water distribution disk of described lower water-dispensing device is evenly covered with the lower water distribution cross section of described cistern.
2. water cold accumulation device according to claim 1, it is characterized in that, described water distribution disk comprises that plectane and parallel interval are arranged in the lower plectane of described upper plectane below, the middle part of described upper plectane or lower plectane is formed with described the first intake-outlet, the periphery of described upper plectane and described lower plectane defines described the second intake-outlet, and described upper plectane and described lower plectane interval form described interlayer.
3. water cold accumulation device according to claim 2, is characterized in that, the height of described interlayer is adjustable.
4. water cold accumulation device according to claim 3, is characterized in that, described water distribution disk comprises the telescopic connection part that upper plectane is connected with lower plectane.
5. water cold accumulation device according to claim 1, is characterized in that, in unit under water distribution cross section and/or unit the diffusing length in water distribution cross section quite or the quantity of water distribution disk equate.
6. water cold accumulation device according to claim 1, is characterized in that, the size of described most water distribution disks is not exclusively equal.
7. according to the water cold accumulation device described in claim 1 to 6 any one, it is characterized in that, the diameter of described water distribution disk with the physical dimension in the corresponding water distribution cross section of described cistern not on an order of magnitude.
8. according to the water cold accumulation device described in claim 1 to 6 any one, it is characterized in that, the quantity of the quantity of the water distribution disk of described upper water distributor and the water distribution disk of described lower water-dispensing device is not etc.
9. according to the water cold accumulation device described in claim 1 to 6 any one, it is characterized in that, the band height of the band height of the water distribution disk of described upper water distributor and the water distribution disk of described lower water-dispensing device is not etc.
10. according to the water cold accumulation device described in claim 1 to 6 any one, it is characterized in that, described water distribution pipeline comprises standpipe, the adiabatic partition, upper distributive pipe, lower distributive pipe, hot water water main and cold water water main, described standpipe is erected in the diapire central authorities of described cistern, described adiabatic the partition is arranged at the middle part in described standpipe, described upper distributive pipe is connected with the top of standpipe, described lower distributive pipe is connected with the bottom of described standpipe, described hot water water main is connected the top of described standpipe with the outside of described cistern, described cold water water main is connected the bottom of described standpipe with the outside of described cistern, described upper distributive pipe and described lower distributive pipe include at least one-level, described upper water distributor and described lower water-dispensing device are connected with the final stage of described upper distributive pipe and described lower distributive pipe respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420074850.1U CN203719008U (en) | 2014-02-20 | 2014-02-20 | Chilled water storage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420074850.1U CN203719008U (en) | 2014-02-20 | 2014-02-20 | Chilled water storage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203719008U true CN203719008U (en) | 2014-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420074850.1U Expired - Fee Related CN203719008U (en) | 2014-02-20 | 2014-02-20 | Chilled water storage device |
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| Country | Link |
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| CN (1) | CN203719008U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105444315A (en) * | 2016-01-12 | 2016-03-30 | 上海瀚显空调节能技术有限公司 | Net structure water distributor used for cylindrical tank |
| CN111322894A (en) * | 2020-03-30 | 2020-06-23 | 哈尔滨锅炉厂有限责任公司 | Unit type water distribution device for large-scale heat storage water tank |
| CN111442324A (en) * | 2020-04-16 | 2020-07-24 | 大唐环境产业集团股份有限公司 | Heat storage tank system capable of changing structure of water distributor in real time and working method |
| CN111813163A (en) * | 2020-07-27 | 2020-10-23 | 航天科工通信技术研究院有限责任公司 | Remote water temperature control system based on ZigBee |
-
2014
- 2014-02-20 CN CN201420074850.1U patent/CN203719008U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105444315A (en) * | 2016-01-12 | 2016-03-30 | 上海瀚显空调节能技术有限公司 | Net structure water distributor used for cylindrical tank |
| CN105444315B (en) * | 2016-01-12 | 2018-12-14 | 上海瀚显空调节能技术有限公司 | A kind of reticular structure water distributor for cylindric cold-storage tank |
| CN111322894A (en) * | 2020-03-30 | 2020-06-23 | 哈尔滨锅炉厂有限责任公司 | Unit type water distribution device for large-scale heat storage water tank |
| CN111442324A (en) * | 2020-04-16 | 2020-07-24 | 大唐环境产业集团股份有限公司 | Heat storage tank system capable of changing structure of water distributor in real time and working method |
| CN111813163A (en) * | 2020-07-27 | 2020-10-23 | 航天科工通信技术研究院有限责任公司 | Remote water temperature control system based on ZigBee |
| CN111813163B (en) * | 2020-07-27 | 2021-09-03 | 航天科工通信技术研究院有限责任公司 | Remote water temperature control system based on ZigBee |
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Granted publication date: 20140716 Termination date: 20190220 |