CN201779885U - Forced circulation type solar water heater with natural circulation - Google Patents
Forced circulation type solar water heater with natural circulation Download PDFInfo
- Publication number
- CN201779885U CN201779885U CN200920253848XU CN200920253848U CN201779885U CN 201779885 U CN201779885 U CN 201779885U CN 200920253848X U CN200920253848X U CN 200920253848XU CN 200920253848 U CN200920253848 U CN 200920253848U CN 201779885 U CN201779885 U CN 201779885U
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- heat
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 238000005338 heat storage Methods 0.000 claims description 12
- 125000004122 cyclic group Chemical group 0.000 claims description 8
- 239000008236 heating water Substances 0.000 claims description 8
- 239000008400 supply water Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 238000003860 storage Methods 0.000 abstract description 5
- 238000009826 distribution Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000003491 array Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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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
- 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
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- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The utility model relates to a forced circulation type solar water heater with natural circulation, which belongs to solar water heating devices and mainly solves the technical problem of improving heating efficiency of medium and large-sized solar water heating system devices. The technical scheme includes that a hot water storage tank 7 is provided with a cold water inlet valve 9 and a hot water supply pipe 13, a lower circulating pipeline 2 is arranged below the hot water storage tank, a circulating pump 6 and a check valve 5 are arranged above the hot water storage tank, the water heater is further provided with branch pipelines, check valves 4 are arranged on the branch pipelines, the pipelines are connected into heat collectors, the upper portions of the first heat collector and the second heat collector are connected with the lower portions of the last heat collector and the second last heat connector by connecting pipes with resistance 3 and 11, the upper portions and the lower portions of the other heat collectors are connected with each other by connecting pipes 12 in a communicated manner, an upper circulating pipeline 10 is connected into the hot water storage tank 7, and check valves 8 are arranged on the heat collectors. The forced circulation type solar water heater can be used for hot water supply.
Description
Technical field:
The utility model relates to a kind of apparatus for heating water by solar energy, a kind of specifically forced cyclic type apparatus for heating water by solar energy with Natural Circulation.
Background technology:
At present, in the big-and-middle-sized solar water heating system device of forced circulation, collector array is connected in parallel usually, wherein the inherent characteristic of affluent-dividing makes that flow distribution is very inhomogeneous in the heat collector, cause the little heat collector of flow to produce high temperature too early, efficient seriously descends, and comprehensive collecting efficiency is lower.To this problem, publication number is that the utility model patent " a kind of solar heat collector array of fluid flow homogenizing " of CN201028833 has proposed a good solution, made the resistance reprovision according to fluid distribution mechanism, the circular sheet that the band through hole all is set in each junction of adjacent heat collector sheet has solved the uneven problem of flow distribution as restricting element by the method that changes the resistance configuration.Yet for different collector arrays, its size, initial resistance state, flow velocity require all inequality, and the physical dimension of needed restricting element is also different.Restricting element in this utility model is not a standard component, needs design and manufacturing, uses restricting element to increase manufacturing and installation cost undoubtedly too much.By analysis, to side by side a heat collector group, the heat collector flow maximum of first and last piece is an example with 7 heat collector groups in parallel, and first flow accounts for 22%, and the flow of last piece accounts for 36%.
Improve the heat absorption efficiency of this kind solar water heating system device for integral body, the utility model proposes a kind of new solution, simultaneously the setting height(from bottom) of heat collector group has side by side been done adjustment, impelled thermosyphon action more obvious, the distribution of flow and temperature is more even.
Summary of the invention:
Goal of the invention of the present utility model just provides a kind of forced cyclic type apparatus for heating water by solar energy of band Natural Circulation of heat absorption efficiency of the big-and-middle-sized solar water heating system device that can effectively improve forced circulation.
Realize that the technical solution of the utility model is such: by heat storage water tank (7), on, following circulating line, solar thermal collector array (1), advance cold valves (9), the forced cyclic type apparatus for heating water by solar energy of the band Natural Circulation that heat supply water pipe (13) and each connecting tube constitute, circulating line 2 is equipped with down in the bottom that it is characterized in that heat storage water tank 7, circulating pump 6 is housed on it, check-valves 5, at circulating pump 6, check-valves 5 two ends are provided with bypass duct, check-valves 4 is housed on this pipeline, following circulating line 2 inserts the bottom of first heat collector in the solar thermal collector array, the bottom of the top of first heat collector and second heat collector and last heat collector and second from the bottom heat collector hinders connecting tube 3 with band, 11 connect, all the other each heat collectors are all with connecting tube intercommunication connection about in the of 12, there is cocycle pipeline 10 to insert heat storage water tank 7 on the top of last heat collector, check-valves 8 is housed on it, the bottom of heat storage water tank 7 is equiped with into cold valves 9, and top is equiped with heat supply water pipe 13.
Wherein, each heat collector in the solar thermal collector array 1 is along the placement that raises gradually of lateral flow direction.Promptly raise gradually along the lateral flow direction by changing highly to make between each heat collector, total angle of climb is about 5 °, length in row's heat collector group is that 10m comes, from the lowest part to the highest point, can produce the difference in height of about 450mm, under the about 30 ℃ situation of the temperature difference, thermosyphon action is more obvious, promotes that the distribution of flow and temperature is more even.
The beneficial effects of the utility model are: based on common forced cyclic type hot-water heating system, only do technological improvement in the local area, can improve the heat absorption efficiency of system significantly; Give full play to the advantage of forced circulation and Natural Circulation, system is existing to be enough to the power that promotes to circulate, has saved operating cost again.
Description of drawings:
Fig. 1 is an overall structure schematic diagram of the present utility model.
Fig. 2 is the solar array that the utility model band angle of climb is arranged.
Among the figure: the 1st, solar thermal collector array, the 2nd, following circulating line, the 3rd, one of band resistance connecting tube, the 4th, one of check-valves, the 5th, one of check-valves, the 6th, circulating pump, the 7th, heat storage water tank, the 8th, one of check-valves, the 9th advances cold valves, the 10th, cocycle pipeline, the 11st, one of band resistance tube connector, the 12nd, tube connector, the 13rd, heat supply water pipe, 21. pedestals, 22. supports, 23. collector arrays.
The specific embodiment:
Below in conjunction with accompanying drawing of the present utility model, the specific embodiment is further made detailed description.
Embodiment: the forced cyclic type apparatus for heating water by solar energy of band Natural Circulation.Circulating line 2 is equipped with down in the bottom of heat storage water tank 7, circulating pump 6 is housed on it, check-valves 5, at circulating pump 6, check-valves 5 two ends are provided with bypass duct, check-valves 4 is housed on this pipeline, following circulating line 2 inserts the bottom of first heat collector in the solar thermal collector array, the bottom of the top of first heat collector and second heat collector and last heat collector and second from the bottom heat collector hinders connecting tube 3 with band, 11 connect, all the other each heat collectors are all with connecting tube intercommunication connection about in the of 12, there is cocycle pipeline 10 to insert heat storage water tank 7 on the top of last heat collector, check-valves 8 is housed on it, the bottom of heat storage water tank 7 is equiped with into cold valves 9, and top is equiped with heat supply water pipe 13.
Wherein restricting element 3 has increased the local resistance of collector at this place of confluxing, thereby reduced the static pressure at the collector place of confluxing of second heat collector, make the branch of the second heat collector collector pressure reduction that confluxes increase, the flow through corresponding increase of flow of second heat collector influences the flow of follow-up several heat collectors then; In like manner, restricting element 11 has increased and divides the collector that confluxes in the local resistance at this place, thereby reduces the static pressure at last a slice heat collector shunting collector place, divides the collector pressure reduction that confluxes to reduce, and makes the flow of last a slice heat collector reduce, and that the flow of whole system more becomes is even.
Reaching under the basic prerequisite uniformly, make full use of the function that flow is regulated in thermal siphon in the Natural Circulation, make flow more become even, optimized the control mode that the circulation of the constant temperature delivery water and the temperature difference combines simultaneously, improve the temperature of constant temperature delivery water, utilized Natural Circulation more, saved operating cost.
For employing Natural Circulation as much as possible, the utility model has been done adjustment to the setting height(from bottom) of heat collector group side by side, install at the high inclination angle of waiting fully different from the past, make heat collector I by changing support height, II, III ... between raise gradually along the lateral flow direction, total angle of climb is about 5 °, length in row's heat collector group is that 10m comes, from middle minimum discharge to last one maximum stream flow place, produced the difference in height of about 450mm, under the about 30 ℃ situation of the temperature difference, thermosyphon action is more obvious, and thermosyphon action is also arranged between former heat collectors and last piece heat collector, and the distribution of flow and temperature is more even.
When forced circulation did not start, circulating pump was failure to actuate, and had interrupted the circuit of Natural Circulation, was provided with bypass between pump inlet and outlet side for this reason.Flapper check valve 4 is adopted in bypass, can only unidirectionally circulate.
When solar heat collector is no longer accepted radiation, night especially, the heat collector heat radiation, wherein the temperature of water storage can be far below the temperature in the water tank, and Temperature Distribution is more even in this moment water tank.If water tank bottom is lower than the heat collector top, thermosyphon action can cause anti-circulation, and the cold water in the heat collector enters water tank.Native system is provided with film check-valves 8 at upper circular tube 10 places, has thoroughly stopped the phenomenon that flows backwards night.
Claims (2)
1. be with the forced cyclic type apparatus for heating water by solar energy of Natural Circulation, by heat storage water tank (7), on, following circulating line, solar thermal collector array (1), advance cold valves (9), heat supply water pipe (13) and each connecting tube constitute, it is characterized in that: circulating line (2) is equipped with down in the bottom of heat storage water tank (7), circulating pump (6) is housed on it, check-valves (5), in circulating pump (6), check-valves (5) two ends are provided with bypass duct, check-valves (4) is housed on this pipeline, following circulating line (2) inserts the bottom of first heat collector in the solar thermal collector array, the bottom of the top of first heat collector and second heat collector and last heat collector and second from the bottom heat collector hinders connecting tube (3 with band, 11) connect, all the other each heat collectors are all used connecting tube (12) intercommunication connection up and down, there is cocycle pipeline (10) to insert heat storage water tank (7) on the top of last heat collector, check-valves (8) is housed on it, the bottom of heat storage water tank (7) is equiped with into cold valves (9), and top is equiped with heat supply water pipe (13).
2. the forced cyclic type apparatus for heating water by solar energy of band Natural Circulation according to claim 1 is characterized in that: each heat collector in the solar thermal collector array (1) is along the placement that raises gradually of lateral flow direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920253848XU CN201779885U (en) | 2009-12-07 | 2009-12-07 | Forced circulation type solar water heater with natural circulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920253848XU CN201779885U (en) | 2009-12-07 | 2009-12-07 | Forced circulation type solar water heater with natural circulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201779885U true CN201779885U (en) | 2011-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920253848XU Expired - Fee Related CN201779885U (en) | 2009-12-07 | 2009-12-07 | Forced circulation type solar water heater with natural circulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201779885U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253486A (en) * | 2018-09-29 | 2019-01-22 | 杨晓军 | A kind of Natural Circulation and forced circulation load in mixture construction in same heating system |
-
2009
- 2009-12-07 CN CN200920253848XU patent/CN201779885U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253486A (en) * | 2018-09-29 | 2019-01-22 | 杨晓军 | A kind of Natural Circulation and forced circulation load in mixture construction in same heating system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110330 Termination date: 20131207 |