CN105674594A - Novel water-circulating instant-heating type solar water heater system - Google Patents
Novel water-circulating instant-heating type solar water heater system Download PDFInfo
- Publication number
- CN105674594A CN105674594A CN201610198718.5A CN201610198718A CN105674594A CN 105674594 A CN105674594 A CN 105674594A CN 201610198718 A CN201610198718 A CN 201610198718A CN 105674594 A CN105674594 A CN 105674594A
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- Prior art keywords
- water
- pipe
- butt
- tube
- hot water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 263
- 238000010438 heat treatment Methods 0.000 title claims abstract description 20
- 238000001816 cooling Methods 0.000 claims description 20
- 230000007812 deficiency Effects 0.000 claims description 4
- 238000005286 illumination Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 10
- 239000000498 cooling water Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 7
- 238000009413 insulation Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
- F24S10/74—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits the tubular conduits are not fixed to heat absorbing plates and are not touching each other
- F24S10/742—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits the tubular conduits are not fixed to heat absorbing plates and are not touching each other the conduits being parallel to each other
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/20—Solar thermal
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Photovoltaic Devices (AREA)
- Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention provides a novel water-circulating instant-heating type solar water heater system which is self-driven without outside power such as electric energy and the like or with less outside power such as electric energy and the like. The system is suitable for a household solar water heater, and is simultaneously suitable for large solar water heaters in places such as hotels and the like. Compared with the prior art, a second water tube and a first water tube are separately arranged independently, so that a sealed loop can be formed through regulation of a three-way valve; an impeller which does not consume electric energy or consumes less electric energy is additionally arranged for driving hot water in the sealed loop to flow in a circulating mode, so that hot water can be provided to a user at any time, and therefore, a process of cooling water before a current water heater is used is avoided, water resources are saved, sufficient utilization of solar energy is realized, and normal use, throughout the year, especially in winter, of the solar water heater is guaranteed.
Description
Technical field
The present invention relates to a kind of new type water circulation instant heating solar water heater system, belong to field of solar energy utilization.
Background technology
Nowadays, huge numbers of families come into by solar water heater, provide domestic hot-water for people. But when using, the cold water in the pipeline connecting faucet and water tank for water-heater before this released from faucet, after these cold water discharge, the hot water of water butt could be released, here it is " a basin cold water " problem of solar water heater that people often say. The typically no insulation of connection pipeline due to water heater with indoor control valve, so after closing with water valve, water retention fluid stopping in pipeline is moved, the heat of water can quickly scatter and disappear, temperature rapid decrease, and after usual tens minutes, the temperature in pipeline is just the same with ambient temperature, and ambient temperature is more low, what in pipeline, the temperature of water declined is more fast, when again using water, still needs to the cold water released in pipeline and just has hot water releasing. So cause the significant wastage of water resource. For the large-scale solar water heater in multiple rooms, connection pipeline used is longer, and the water yield wherein stored is bigger, and the water resource waste thus caused is more serious.
The use of solar water heater has obvious seasonality, summer and autumn, water heating effect was better, and during winter, owing to temperature is relatively low, connect solar water heater very easily frozen with the pipeline of indoor valve, causing that solar water heater cannot use, user usually needs additionally to purchase water heater and uses to the hot water ensureing winter, adds extra-pay expenditure.
In prior art, solution to the problems described above mainly has following several. One is adopt insulation material parcel pipeline, has certain effect but insulation effect and bad, and in pipeline, the heat of water still runs off quickly; Two is adopt electric-heating belt to be coated with whole yard piping, realizes pipe insulation to electric-heating belt energising, consumes electric energy. This two kinds of methods are passive insulation and prolongation over time, and it is aging that above-mentioned insulation material all can produce in various degree, and loss electric energy, heat insulation effect is not good.
Three methods adopting piping loop while of being in conjunction with both the above method, it is exactly that circulating water pipe is set in solar water heater, water pipe installs circulating pump therebetween additional, the water in pipeline is made to be circulated thus reaching heat insulation effect with the water in water butt, the method may be used for the place of the extensive water such as hotel, owing to hot water demand measures relatively larger, circulating pump consumes the relative cost of electric energy and also can accept, but still to consume merely the working method not environmentally of electrical energy drive circulation;The method is particularly unsuitable for domestic solar water heater; because domestic solar water heater uses hot water amount relatively fewer; can not forming the scale using hot water, the method cost performance adopting electrical energy drive circulating pump drive hot water circuit is not high, does not have the universality of popularization and application yet.
Summary of the invention
It is an object of the invention to solve the deficiency in prior art, a kind of new type water circulation instant heating solar water heater system not needing or needing the exterior powers such as a small amount of electric energy self-driven is provided, this system is not only suitable for domestic solar water heater, is also simultaneously suitable for the large-scale solar water heater in the places such as hotel.
Technical scheme and operation logic are as follows:
A kind of new type water circulation instant heating solar water heater system includes water butt, thermal-arrest tube bank, base tube, the first water pipe, three-way valve, hot water outlet pipe, cold water inlet, the second water pipe, secondary thermal-collecting tube, secondary water butt, adds heat pipe, discharge capacity piston, first connecting rod, crank, cooling tube, power piston, second connecting rod, connecting tube, impeller, electrical auxiliary heater. First water pipe, the second water pipe and water butt can form a closed circuit, and when user is without water, the hot water in water butt circulates in the loop under impeller drives, and user uses and opens three-way valve during hot water and just can release hot water.
During work, thermal-arrest tube bank absorbs the radiant heat of the sun, and hot water preparing exists in water butt. Regulate the three-way valve of device, it may be achieved user puts hot water, to water on solar water heater, make the first water pipe, the second water pipe and water butt composition connected loop. Secondary thermal-collecting tube absorb solar energy after hot water preparing exist in secondary water butt, hot water in secondary water butt is for adding the driving device offer driving force of heat pipe, discharge capacity piston, first connecting rod, crank, connecting tube, cooling tube, power piston, second connecting rod composition, driving impeller rotates, the hot water ordered about in water butt flows in the loop, to provide the user hot water at any time.
The present invention compared with the existing technology has prominent substantive distinguishing features and marked improvement: the second water pipe separates with the first water pipe being separately provided, a loop closed can be formed by the adjustment of three-way valve, add and do not consume electric energy or a small amount of impeller consuming electric energy, drive the hot water circuit flowing in loop, hot water can be provided the user at any time, not only avoid the existing solar water heater process cooling water before, save water resource, also achieve making full use of of solar energy, it is ensured that the normal use of annual especially winter solar energy water heater. Ordering about with pure electric water pump compared with water flowing, operating cost is lower. Visible, what the present invention proposed does not need or needs the new type water circulation instant heating solar water heater system of less exterior power to have significant substantive distinguishing features and beneficial effect.
Accompanying drawing illustrates:
Fig. 1 is the structural principle schematic diagram of a kind of new type water circulation instant heating solar water heater system of the present invention;
The another kind that Fig. 2 is the present invention can provide the structural principle schematic diagram of the new type water circulation instant heating solar water heater system of hot water for multiple users;
Wherein, water butt 1, thermal-arrest tube bank 2, base tube the 3, first water pipe 4, three-way valve 5, hot water outlet pipe 6, cold water inlet the 7, second water pipe 8, secondary thermal-collecting tube 9, secondary water butt 10, add heat pipe 11, discharge capacity piston 12, first connecting rod 13, crank 14, cooling tube 15, power piston 16, second connecting rod 17, connecting tube 18, impeller 19, electrical auxiliary heater 20, hot water outlet pipe 6-1, water supply valve 21, hot water effluent's valve 22.
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferred forms of the present invention is elaborated.
Embodiment 1: as it is shown in figure 1, a kind of new type water circulation instant heating solar water heater system includes water butt 1, thermal-arrest tube bank 2, base tube the 3, first water pipe 4, three-way valve 5, hot water outlet pipe 6, cold water inlet the 7, second water pipe 8, secondary thermal-collecting tube 9, secondary water butt 10, adds heat pipe 11, discharge capacity piston 12, first connecting rod 13, crank 14, cooling tube 15, power piston 16, second connecting rod 17, connecting tube 18, impeller 19, electrical auxiliary heater 20; Water butt 1 connects thermal-arrest tube bank 2, thermal-arrest tube bank 2 connection base tube 3, and water butt 1 connects the first water pipe 4 and the second water pipe 8, and the first water pipe 4 connects the second water pipe 8, the second water pipe 8 connecting tee valve 5, and three-way valve 5 connects hot water outlet pipe 6 and cold water inlet 7; Secondary thermal-collecting tube 9 is connected with secondary water butt 10, and electrical auxiliary heater 20 is placed in secondary water butt 10; Adding on the left of heat pipe 11 2/3rds and be partially disposed in secondary water butt 10, it is outside that right side three/part is exposed to secondary water butt 10; Adding and arrange discharge capacity piston 12 in heat pipe 11, discharge capacity piston 12 is divided into airtight left side cavity and right-side cavity by adding heat pipe 11; Arranging power piston 16 in cooling tube 15, power piston 16 is partitioned into airtight left side cavity by the left of cooling tube 15; The right-side cavity adding heat pipe 11 is connected with the left side cavity of cooling tube 15 by connecting tube 18; Discharge capacity piston 12 is connected with crank 14 by first connecting rod 13, and power piston 16 is connected with crank 14 by second connecting rod 17, and crank 14 is connected with impeller 19, and impeller 19 is in the first water pipe 4. Wherein, adding the gas in the closed chamber of heat pipe 11 and cooling tube 15 is air.
When this water-heater system runs, the radiant heat of the thermal-arrest tube bank 2 absorption sun, hot water preparing exists in water butt 1. By regulating the three-way valve 5 in device, the first water pipe 4 can be made to be respectively communicated with cold water inlet 7 with hot water outlet pipe's the 6, first water pipe 4 and second water pipe the 8, second water pipe 8, and realize following three function respectively: user puts hot water; First water pipe the 4, second water pipe 8 is made to form loop with water butt 1; To water on solar water heater. When user puts hot water, regulate the three-way valve 5 in device, make the first water pipe 4 connect with hot water outlet pipe 6, directly have hot water to release. Close three-way valve 5, first water pipe the 4, second water pipe 8 is made to form loop with water butt 1, now, secondary thermal-collecting tube 9 absorbs the radiant heat hot water preparing of solar energy and is stored in secondary water butt 10, heat is passed to and is added heat pipe 11 by the hot water in secondary water butt 10, the air heats adding heat pipe 11 left side cavity expands, and promotes discharge capacity piston 12 to move right, and promotes first connecting rod 13 to drive crank 14 to rotate; Meanwhile, the air of discharge capacity piston 12 right-side cavity is compressed tailing edge connecting tube 18 and is flowed to cooling tube 15, and propulsion power piston 16 moves right, and promotes second connecting rod 17 to drive crank 14 to rotate; Cooling tube 15 power piston 16 moves right in process, the left side cavity volume of cooling tube 15 increases, under the cooling of cooling tube 15 outside air, the temperature in cooling tube 15 left side cavity declines, air shrinkage, power piston 16 is moved to the left, air is pushed back the right-side cavity adding heat pipe 11 again, thus promoting discharge capacity piston 12 to be moved to the left, and so forth along connecting tube 18, crank 14 drives impeller 19 to rotate, and the hot water ordered about in water butt 1 circulates in the loop. To on solar water heater during water, regulating three-way valve makes the second water pipe 8 connect with cold water inlet 7, and cold water enters water heater and realizes upper water function.
Embodiment 2: as shown in Figure 2, a kind of new type water circulation instant heating solar water heater system that hot water is provided for multiple users, its structure and embodiment 1 are distinctive in that and eliminate three-way valve 5, hot water outlet pipe 6, add hot water outlet pipe 6-1, water supply valve 21, hot water effluent's valve 22; What connected mode was different from embodiment 1 is that the first water pipe 4 connects hot water effluent's valve 22 by pipeline, and hot water effluent's valve 22 connects hot water outlet pipe 6-1, and the second water pipe 8 connects water supply valve 21, and water supply valve 21 connects cold water inlet 7. Wherein, hot water effluent's valve 22 and hot water outlet pipe 6-1 can arrange its quantity according to actual needs.
This embodiment can provide hot water for multiple users/room, and this water heater runs basically identical with embodiment 1, is distinctive in that: when user puts hot water, opens one/multiple hot water effluent's valves 22, and hot water just flows out from corresponding hot water outlet pipe 6-1; During upper water, opening water supply valve 21, cold water is entered water heater by cold water inlet 7 and realizes upper water function. The technical scheme of this embodiment can substitute the technical scheme of the electrical energy drive circulating pump promotion pipeline hot water circuit that the places such as existing hotel use, power consumption is significantly reduced while there is same loop effect, technically there is significant substantive distinguishing features, therefore, it is adaptable to the large-scale solar water heater in the places such as hotel.
Embodiment 3: the design of this embodiment is consistent with embodiment 1 or 2 with operation principle, it is distinctive in that will add on the left of heat pipe 11 2/3rds is partially disposed in water butt 1, electrical auxiliary heater 20 is set in water butt 1 simultaneously, remove secondary thermal-collecting tube 9, secondary water butt 10, so add the heat in heat pipe 11 also can directly be provided by the hot water in water butt 1, reduce further the product cost of this cover system. The operation of this embodiment 3 is basically identical with embodiment 1 or 2.
Electrical auxiliary heater 20 in embodiment 1,2,3 works under the meteorological condition of the illumination deficiencies such as cloudy day, sleet sky, adds hot water to drive above-mentioned do action. In above-described embodiment, add and can strengthen endothermic effect with fin outside heat pipe 11, can dispel the heat with fin supplement heat rejecter outside cooling tube 15; Thermal-arrest tube bank 2 may be used without collecting plate; Water butt 1 can replace with case/staving that thermal-arrest tube bank or collecting plate separate.
Claims (8)
1. a new type water circulation instant heating solar water heater system, including water butt (1), thermal-arrest tube bank (2), base tube (3), characterized by further comprising the first water pipe (4), three-way valve (5), hot water outlet pipe (6), cold water inlet (7), second water pipe (8), secondary thermal-collecting tube (9), secondary water butt (10), add heat pipe (11), discharge capacity piston (12), first connecting rod (13), crank (14), cooling tube (15), power piston (16), second connecting rod (17), connecting tube (18), impeller (19), electrical auxiliary heater (20), water butt (1) connects thermal-arrest tube bank (2), thermal-arrest tube bank (2) connects base tube (3), water butt (1) connects the first water pipe (4) and the second water pipe (8), first water pipe (4) connects the second water pipe (8), second water pipe (8) connecting tee valve (5), three-way valve (5) connects hot water outlet pipe (6) and cold water inlet (7), secondary thermal-collecting tube (9) is connected with secondary water butt (10), and electrical auxiliary heater (20) is placed in secondary water butt (10), adding heat pipe (11) left side 2/3rds and be partially disposed in secondary water butt (10), it is outside that right side three/part is exposed to secondary water butt (10),Adding and arrange discharge capacity piston (12) in heat pipe (11), discharge capacity piston (12) will add heat pipe (11) and be divided into airtight left side cavity and right-side cavity; Arranging power piston (16) in cooling tube (15), cooling tube (15) left side is partitioned into airtight left side cavity by power piston (16); The right-side cavity adding heat pipe (11) is connected with the left side cavity of cooling tube (15) by connecting tube (18); Discharge capacity piston (12) is connected with crank (14) by first connecting rod (13), and power piston (16) is connected with crank (14) by second connecting rod (17), and crank (14) is connected with impeller (19), and impeller (19) is in the first water pipe (4).
2. a kind of new type water circulation instant heating solar water heater system according to claim 1, it is characterized in that, remove three-way valve (5), hot water outlet pipe (6), increase hot water outlet pipe (6-1), water supply valve (21), hot water effluent's valve (22); First water pipe (4) connects hot water effluent's valve (22) by pipeline, and hot water effluent's valve (22) connects hot water outlet pipe (6-1), and the second water pipe (8) connects water supply valve (21), and water supply valve (21) connects cold water inlet (7).
3. a kind of new type water circulation instant heating solar water heater system according to claim 2, it is characterised in that hot water effluent's valve (22) and hot water outlet pipe (6-1) can arrange its quantity according to actual needs.
4. a kind of new type water circulation instant heating solar water heater system according to claim 1 and 2, it is characterised in that remove secondary thermal-collecting tube (9), secondary water butt (10); Add heat pipe (11) left side 2/3rds and be partially disposed in water butt (1), electrical auxiliary heater (20) is set in water butt (1) simultaneously.
5. a kind of new type water circulation instant heating solar water heater system according to claim 1 and 2, it is characterised in that electrical auxiliary heater (20) works under the meteorological condition of illumination deficiency.
6. a kind of new type water circulation instant heating solar water heater system according to claim 4, it is characterised in that electrical auxiliary heater (20) works under the meteorological condition of illumination deficiency.
7. a kind of new type water circulation instant heating solar water heater system according to claim 1 and 2, it is characterised in that fin is installed in the outside adding heat pipe (11) and/or cooling tube (15).
8. a kind of new type water circulation instant heating solar water heater system according to claim 1 and 2, it is characterised in that water butt (1) is available separate with thermal-arrest tube bank (2) case/staving replacement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610198718.5A CN105674594B (en) | 2016-04-01 | 2016-04-01 | A kind of water circulation instant heating solar water heater system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610198718.5A CN105674594B (en) | 2016-04-01 | 2016-04-01 | A kind of water circulation instant heating solar water heater system |
Publications (2)
| Publication Number | Publication Date |
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| CN105674594A true CN105674594A (en) | 2016-06-15 |
| CN105674594B CN105674594B (en) | 2017-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610198718.5A Active CN105674594B (en) | 2016-04-01 | 2016-04-01 | A kind of water circulation instant heating solar water heater system |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113317269A (en) * | 2021-06-29 | 2021-08-31 | 烟台市海洋经济研究院(烟台市海洋科学技术研究所、烟台市渔业技术推广站、烟台市水生动物疫病防控中心) | Water temperature constant system for sea cucumber seedling raising and use method |
| CN113984628A (en) * | 2021-11-04 | 2022-01-28 | 西安建筑科技大学 | Liquid level exchanger capable of adjusting temperature |
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| CN201122008Y (en) * | 2007-09-29 | 2008-09-24 | 合肥科大阳光能源科技有限公司 | Control system for solar instant water heater |
| CN201715758U (en) * | 2010-07-09 | 2011-01-19 | 杨庆玲 | Immediate-heating anti-freezing solar water heater |
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| CN205481870U (en) * | 2016-04-01 | 2016-08-17 | 烟台大学 | Novel instant heating type solar water heater system of hydrologic cycle |
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2016
- 2016-04-01 CN CN201610198718.5A patent/CN105674594B/en active Active
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| CN201122008Y (en) * | 2007-09-29 | 2008-09-24 | 合肥科大阳光能源科技有限公司 | Control system for solar instant water heater |
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| CN201715758U (en) * | 2010-07-09 | 2011-01-19 | 杨庆玲 | Immediate-heating anti-freezing solar water heater |
| EP2770272A1 (en) * | 2011-09-02 | 2014-08-27 | GD Energy Services, S.A.U. | Method for draining thermal oil in a thermosolar plant, and corresponding auxiliary installation for carrying out said method |
| CN102997461A (en) * | 2011-09-12 | 2013-03-27 | 赵博 | Solar water heater capable of implementing full-automatic water feeding, pipeline emptying and immediate heating |
| CN205481870U (en) * | 2016-04-01 | 2016-08-17 | 烟台大学 | Novel instant heating type solar water heater system of hydrologic cycle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113317269A (en) * | 2021-06-29 | 2021-08-31 | 烟台市海洋经济研究院(烟台市海洋科学技术研究所、烟台市渔业技术推广站、烟台市水生动物疫病防控中心) | Water temperature constant system for sea cucumber seedling raising and use method |
| CN113984628A (en) * | 2021-11-04 | 2022-01-28 | 西安建筑科技大学 | Liquid level exchanger capable of adjusting temperature |
Also Published As
| Publication number | Publication date |
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| CN105674594B (en) | 2017-06-16 |
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Denomination of invention: A water circulation instant solar water heater system Effective date of registration: 20211214 Granted publication date: 20170616 Pledgee: Yantai financing guarantee Group Co.,Ltd. Pledgor: Yantai University Registration number: Y2021980014841 |
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