CN103557604A - High-temperature liquid film solar cavity heat absorber - Google Patents
High-temperature liquid film solar cavity heat absorber Download PDFInfo
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- CN103557604A CN103557604A CN201310539707.5A CN201310539707A CN103557604A CN 103557604 A CN103557604 A CN 103557604A CN 201310539707 A CN201310539707 A CN 201310539707A CN 103557604 A CN103557604 A CN 103557604A
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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
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- 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
Abstract
The invention relates to a high-temperature liquid film solar cavity heat absorber, which comprises a high-temperature resistant thermal insulation cavity body; a liquid work medium inlet is arranged at the upper part of one side of the high-temperature resistant thermal insulation cavity body; a liquid work medium outlet is arranged at the lower part of the other side of the high-temperature resistant thermal insulation cavity body; a heat absorption surface of a liquid film is connected with the liquid work medium inlet by a high-position film molding device and is connected with the liquid work medium outlet by a low-position liquid collecting pool and a high-temperature submerged pump. After the high-temperature liquid film solar cavity heat absorber with such a structure is adopted, the theoretical flow speed and the Reynolds number can be randomly increased without the need of a high-lift pump to overcome the on-way resistance, and the needed pump lift is only the hypothesis height of the floor head absorber; the opened heat absorber completely avoids the blocking risk of heat absorption pipes and is suitable for various high-temperature liquid work mediums containing fused salt, and the demands on a mirror field operation technology and an electric heat tracing heat preservation technology are obviously reduced; the heat absorber is mounted close to the ground, and the engineering is simple and safe; due to the design of a multilayer baffling vortex-removing structure, the influence of a wind field outside the cavity body to the heat exchange in the cavity body is effectively reduced, and the convection loss is reduced.
Description
Technical field
The present invention relates to solar heat absorber device technique field, specifically refer to a kind of high-temperature liquid state film solar cavity type heat absorber.
Background technology
Since the eighties in 20th century, countries in the world have been set up various dissimilar solar generator Demonstration devices and commercialized running device in succession, have promoted development and the commercialization process of solar energy thermal-power-generating technology.The existing solar heat power generation system in the world mainly contains groove type line-focusing system, tower system and the large fundamental type of dish formula system 3.
Wherein tower system, with optically focused ratio and the high-quality steam parameter of its superelevation, is able to be combined with traditional steam turbine the generating efficiency that reaches higher, has good economy and application prospect.
Heat dump is the core component of tower type thermal generation technology, ten hundreds of speculums by ground sunlight reflected to the heat dump that only has tens of square meters, produce the extremely solar irradiance of thousands of times of hundreds of, in heat dump, mobile heat-transfer working medium is responsible for huge energy to take away rapidly, and stores for producing high temperature and high pressure steam generating stably.
Secondary reflection formula solar heat power generation system is the improvement project on traditional tower-type solar thermal power generating system basis.Because traditional tower system is arranged on the high tower top of tens of rice by heat dump, convection current and radiation loss are larger, and heat dump I&M cost is very high, therefore the secondary reflection device of a pair of curved face type can be installed by the position shorter, thereby changing heat dump into ground installs, to reduce heat energy loss, and simplify the corollary equipment of part high-altitude heat dump, significantly cut down system cost and risk.
High-temp liquid diaphragm type heat dump is particularly suitable for secondary reflection formula solar heat power generation system, can allow the optically focused ratio above up to 1,000 times, and can, for the high-temp liquid working medium of multiple different thermal characteristics, even can be used as the reactor that solar energy-chemical energy transforms.By liquid, the movement of falling object on inclined-plane produces higher flow velocity to liquid film heat dump, to obtain high Reynolds number and convection transfer rate, thereby can obtain high heat exchange power.
There is following problem in existing solar heat absorber:
1, in order to improve the coefficient of heat transfer of liquid refrigerant in pipeline, the internal diameter of pipeline should not be too large, considers simultaneously and avoid occurring capillarity, and internal diameter of the pipeline can not be too little, and bore is got 20mm～40mm conventionally.Meanwhile, the longer tube side of thinner caliber and tower heat dump can significantly improve on-way resistance again, thereby under the restriction of existing high temperature high lift pump technical merit, there is limiting value in such heat dump tube fluid speed, conventionally can not surpass 2m/s, there is limiting value in the convection transfer rate that is such heat dump, then considers the heatproof characteristic of metal tube material, and the high irradiance that existing solar energy tower type photo-thermal power generation heat dump can bear is about 750kW/ ㎡.
2, existing solar energy tower type photo-thermal power generation adopts fused salt as working medium with cavity type heat absorber more, its freezing point is about 230 ℃, solid-liquid mixing point is up to 270 ℃, obstruction risk in internal diameter is got 20mm～40mm endothermic tube is high, and Jing Chang operation technology and electric tracing thermal insulation technology have been proposed to abnormal harsh requirement.
3, existing solar energy tower type photo-thermal power generation is used for one-sided condenser field with cavity type heat absorber, and accurate and heavy heat dump needs integral hoisting to hundred meter high tower top, engineering is very difficult, and upper-level winds on the impact of inside cavity heat exchange property significantly, do not allow to ignore by convection losses.
Summary of the invention
The object of the invention is to have overcome above-mentioned shortcoming of the prior art, provide a kind of be not subject to caliber size restrictions, theoretical velocity and Reynolds number unrestricted, can avoid endothermic tube to block, significantly reduce Jing Chang operation technology and electric tracing thermal insulation specification requirement, the simple high-temperature liquid state film solar of engineering cavity type heat absorber.
For realizing above-mentioned object, high-temperature liquid state film solar cavity type heat absorber of the present invention by the following technical solutions:
This high-temperature liquid state film solar cavity type heat absorber, its main feature is, comprise high temperature resistant heat insultating cavity, the top of heat insultating cavity one side that this is high temperature resistant is provided with liquid working substance entrance, the bottom of this is high temperature resistant heat insultating cavity opposite side is provided with liquid working substance outlet, described liquid working substance porch is provided with high-order film formation device, described liquid working substance exit is provided with low level collecting tank and high temperature submerged pump, liquid film heat-absorbent surface is obliquely installed in described high temperature resistant heat insultating cavity, this liquid film heat-absorbent surface is connected with described liquid working substance entrance by described high-order film formation device, this liquid film heat-absorbent surface is connected with described liquid working substance outlet with high temperature submerged pump by described low level collecting tank.
High-order film formation device in this high-temperature liquid state film solar cavity type heat absorber comprise or level the first dashpot, the bottom surface of the first described dashpot is circular arc.
Between the first dashpot in this high-temperature liquid state film solar cavity type heat absorber, by the described stalk that overflows, cut apart, and this surface of overflowing stalk is arcuate surface, and the height that overflows stalk in nearly described liquid working substance exit is lower than the height that overflows stalk of nearly liquid working substance porch.
High-order film formation device in this high-temperature liquid state film solar cavity type heat absorber comprises level the second dashpot, the bottom surface of the second described dashpot is arc, and the bottom of second dashpot in nearly described liquid working substance exit has a plurality of circular holes separately, liquid working substance flows into described liquid film heat-absorbent surface by this circular hole.
In this high-temperature liquid state film solar cavity type heat absorber, along the first dashpot described in each or along the second dashpot described in each and away from a side of described liquid working substance entrance, be provided with the emptying valve of maintenance, this overhauls emptying valve and is connected with emptying pipe, and the first described dashpot and the second described dashpot all tilt to the emptying valve of described maintenance place.
Low level collecting tank in this high-temperature liquid state film solar cavity type heat absorber comprises surge chamber and fluid reservoir, described liquid working substance flows into this surge chamber by described liquid film heat-absorbent surface, the inner surface of described surge chamber is being just parabolic terminal buffering suface corresponding to a side of liquid working substance, the central lowest part of described surge chamber is provided with liquid collecting hole, the bottom of this surge chamber all tilts to central authorities, and the below of described liquid collecting hole is provided with fluid reservoir.
Liquid working substance exit in this high-temperature liquid state film solar cavity type heat absorber is provided with high temperature submerged pump, and described liquid working substance pumps described liquid working substance by this high temperature submerged pump by described fluid reservoir and exports.
The inner surface of the high temperature resistant heat insultating cavity in this high-temperature liquid state film solar cavity type heat absorber is provided with deflection plate, and described deflection plate is parallel to horizontal plane.
Liquid film heat-absorbent surface in this high-temperature liquid state film solar cavity type heat absorber is zigzag with the surface that described liquid working substance contacts, and the face width of tooth of this liquid film heat-absorbent surface is more than or equal to 50mm.
Liquid film heat-absorbent surface in this high-temperature liquid state film solar cavity type heat absorber and the angle of horizontal plane are more than or equal to 40 °.
The diameter of the circular hole in this high-temperature liquid state film solar cavity type heat absorber is 50～70mm, and this circular hole is 200～400mm along the spacing of the second described dashpot direction.
The high-temperature liquid state film solar cavity type heat absorber that has adopted this structure, has following beneficial effect:
1, the open type liquid film heat transfer technology that the present invention adopts is no longer subject to the restriction of caliber size, theoretical velocity and Reynolds number can arbitrarily increase, be that the longer mean flow rate in heat exchange inclined-plane is higher, thereby can reach high convection transfer rate, can easily bear 1MW/m
2above optically focused solar illumination.Fluid in heat dump of the present invention is the free landing campaign in inclined-plane simultaneously, no longer needs high-lift pump to overcome on-way resistance, and required pump lift is only ground heat dump hypothesis height.
2, the risk that the open type liquid film heat transfer technology that the present invention adopts has avoided endothermic tube to stop up completely, and can be widely used in containing fused salt in interior various high-temperature liquid state working medium, significantly reduced the requirement to Jing Chang operation technology and electric tracing thermal insulation technology.
3, the present invention, in conjunction with the tower photo-thermal power generation technology of secondary reflection type, adopts the cavate liquid film heat dump of opening upwards, goes for the condenser field of arbitrary shape system, heat dump installation near the ground, and engineering is simple and safe.The liquid film heat-absorbent surface that the present invention adopts is positioned at cavity bottom, and cavity has adopted special multilayer baffling eddy clearing structure design, effectively reduces the impact of the outside wind field of cavity on heat exchange in chamber, significantly reduces convection losses.
Accompanying drawing explanation
Fig. 1 is the structural representation of solar cavity type heat absorber of the present invention.
Fig. 2 a is the side view of the multistage threshold film formation device of a high position of the present invention.
Fig. 2 b is the top view of the multistage threshold film formation device of a high position of the present invention.
Fig. 3 a is the side view that high-order porous of the present invention is split into film device.
Fig. 3 b is the top view that high-order porous of the present invention is split into film device.
Fig. 4 is the schematic diagram of low level collecting tank of the present invention.
Fig. 5 is the schematic diagram of liquid film heat-absorbent surface of the present invention.
Fig. 6 be solar cavity type heat absorber of the present invention and flow field schematic diagram.
Number in the figure is described as follows:
1 high temperature resistant heat insultating cavity
2 liquid working substance entrances
3 high-order film formation devices
4 liquid film heat-absorbent surfaces
5 low level collecting tanks
6 high temperature submerged pumps
7 liquid working substance outlets
8 liquid working substances
9 first dashpots
10 overflow stalk
The emptying valve of 11 maintenance
12 emptying pipes
13 second dashpots
14 circular holes
15 surge chambers
16 parabolic terminal buffering sufaces
17 liquid collecting holes
18 fluid reservoirs
19 deflection plates
The specific embodiment
In order more clearly to understand technology contents of the present invention, especially exemplified by following examples, describe in detail.
Refer to Fig. 1, this high-temperature liquid state film solar cavity type heat absorber, comprise high temperature resistant heat insultating cavity 1, high temperature resistant heat insultating cavity 1 adopts brick structure, the top of heat insultating cavity 1 one sides that this is high temperature resistant is provided with liquid working substance entrance 2, the bottom of this is high temperature resistant heat insultating cavity 1 opposite side is provided with liquid working substance outlet 7, liquid working substance entrance 2 places are provided with high-order film formation device 3, liquid working substance exports 7 places and is provided with low level collecting tank 5 and high temperature submerged pump 6, liquid film heat-absorbent surface 4 is obliquely installed in high temperature resistant heat insultating cavity 1, this liquid film heat-absorbent surface 4 is connected with liquid working substance entrance 7 by high-order film formation device 3, this liquid film heat-absorbent surface 4 is connected with liquid working substance outlet 7 with high temperature submerged pump 6 by low level collecting tank 5, the low-lift pump pumping liquid working medium entrance 2 of liquid working substance 8 to be heated in storage tank also enters in high-order film formation device 3, liquid working substance 8 freely spreads on smooth resistant to elevated temperatures liquid film heat-absorbent surface 4 in high-order film formation device 3 after the effects such as shunting or curved surface tension force form uniform liquid film, liquid film skims at a high speed liquid film heat-absorbent surface 4 under the acceleration of gravity, heat on it taken away fast and entered low level collecting tank 5 bufferings and mix, liquid level in low level collecting tank 5 and temperature rise to after preset value, high temperature submerged pump 6 is automatically opened the liquid working substance 8 after heating is pumped for follow-up TRT from liquid working substance outlet 7.
High-order film formation device 3 can adopt refractory ceramics or stainless steel material to make, high-order film formation device 3 can be specially high-order multistage threshold film formation device, specifically refer to Fig. 2 a and Fig. 2 b, wherein, high-order film formation device 3 comprises 2 or 3 grades of dashpots 9, liquid working substance 8 slows down through these 2 or 3 grades of dashpot flow velocitys, the bottom surface of the first dashpot 9 is circular arc, between the first dashpot 9, by overflowing stalk 10, cut apart, thereby produce uniform liquid film, and nearly described liquid working substance exports the height that overflows stalk 10 at 7 places lower than the height that overflows stalk 10 at nearly liquid working substance entrance 2 places.
High-order film formation device 3 can also be specially high-order porous and be split into film device, specifically refer to Fig. 3 a and Fig. 3 b, wherein, high-order film formation device 3 comprises 2 grade of second dashpot 13, the bottom surface of the second dashpot 13 is arc, and the bottom that nearly liquid working substance exports second dashpot 13 at 7 places has the circular hole 14 of space, and liquid working substance 8 is by these circular hole 14 influent film heat-absorbent surfaces 4.The diameter of circular hole is 50～70mm, and this circular hole is 200～400mm along the spacing of dashpot, thereby the tension force by many groups of diffusions in the plane and while converging forms liquid film.
Along the first dashpot 9 or along the second dashpot 13 and away from a side of liquid working substance entrance 2, be provided with the emptying valve 11 of maintenance; this overhauls emptying valve 11 and is connected with emptying pipe 12; the first dashpot 9 and the second dashpot 13 all tilt to emptying valve 11 places; thereby the remaining liq working medium 8 in the first dashpot 9 or the second dashpot 13 can be discharged to the emptying pipe 12 in device outside; to prevent liquid working substance 8 frozen plug in shutting down maintenance time slot, specifically refer to Fig. 2 b and Fig. 3 b.
Refer to Fig. 4, low level collecting tank 5 mainly plays working medium deceleration and the mixed uniformly effect of high-speed and high-temperature, low level collecting tank 5 can adopt pottery or high grade stainless steel, low level collecting tank 5 comprises surge chamber 15 and fluid reservoir 18, liquid working substance 8 flows into this surge chamber 15 by liquid film heat-absorbent surface 4, the side that surge chamber 15 is right against liquid working substance 9 is that parabolic terminal buffering suface 16(roughness is not more than Ra0.8), parabolic terminal buffering suface 16 is for by high-speed and high-temperature liquid working substance film buffer deceleration, , the bottom of surge chamber 15 is provided with liquid collecting hole 17, the bottom of surge chamber 15 all tilts to central authorities, the below of this liquid collecting hole 17 is provided with fluid reservoir 18.Liquid working substance exports 7 places and is provided with high temperature submerged pump 6, and liquid working substance 8 pumps liquid working substance outlet 7 by this high temperature submerged pump 6 by fluid reservoir 18.
Refer to Fig. 6, wherein the direction of arrow is wind direction, and the inner surface of high temperature resistant heat insultating cavity 1 is provided with deflection plate 19, and deflection plate 19 is parallel to horizontal plane.Several internal faces of cavity-type solar heat dump have all been covered with endothermic tube mostly at present, and cavity adopts simple single radial cut polyhedral structure, and the outer gas stream entering from opening part is easy to form vortex in cavity, thereby produce larger heat loss through convection loss.The present invention has adopted unique multilayer baffling eddy clearing structure, adopted cheapness and heat insulation and preservation effect is good and resistant to elevated temperatures insulation brick material, do not affecting under the prerequisite of light path, by the deflection plate 19 in cavity surrounding, block as far as possible the generation path of maelstrom in cavity, larger vortex is divided into a plurality of little vortexs, thereby significantly reduces air velocity and heat loss through convection loss in chamber.
Refer to Fig. 5, liquid film heat-absorbent surface 4 adopts high temperature ceramic material, the serviceability temperature of most ceramic material is all higher than 800 °, and there is good physical characteristic, liquid film heat-absorbent surface in the present invention is only done runner and is used, and there is no strict structural strength requirement, and therefore actual serviceability temperature can rise to 1200 ° of left and right, the surface that liquid film heat-absorbent surface 4 contacts with liquid working substance is zigzag, and the face width of tooth of this liquid film heat-absorbent surface 4 is more than or equal to 50mm.Liquid film heat-absorbent surface 4 is more than or equal to 40 ° with the angle of horizontal plane, to obtain enough acceleration of gravity and mean flow rate, liquid film heat-absorbent surface 4 surfaces are smooth surface (roughness is not more than Ra0.8), to reduce the friction near surperficial transition zone, prevent that transition zone liquid working substance 8 is overheated.
In application process, drop to the liquid film heat-absorbent surface 4 of inclination with the initial velocity close to 0 from high temperature film formation device when liquid after, the effective vent of supposing liquid working substance entrance 2 is 10m*10m, tooth width 0.1m, liquid film heat-absorbent surface 4 is got 45 ° with the inclination angle of horizontal plane, coefficient of friction 0.001～0.01 between liquid rete can be ignored, and the mean flow rate of liquid film on liquid film heat-absorbent surface 4 is about 7m/s, and the flow velocity that end enters low level collecting tank 5 is 14m/s.According to fluid, horizontal to plunder dull and stereotyped forced-convection heat transfer theoretical, and the average Reynolds numbdr that the 430 ℃ of physical property of Molten Binary Salts of take are calculated now as example is about:
Re=uL/ν=7*0.1/(8.64e-7)=8.1e5；
Ruse you number are:
Nu=0.037Re4/5Pr1/3=0.037*(8.1e5)4/54.551/3=3268；
Calculating thus forced-convection heat transfer coefficient is:
h=Nuλ/L=3268*0.524/0.1=17124W/(m
2K)；
The practical application meaning of this forced-convection heat transfer coefficient is, when the temperature of liquid film heat-absorbent surface is during only higher than 100 ℃ of liquid working substances, can produce about 1.7MW/m
2exchange capability of heat, namely the average optically focused ratio of heat dump can reach 1700 times, this is that current most of liquid working substance solar heat absorber is beyond one's reach.
The high-temperature liquid state film solar cavity type heat absorber that has adopted this structure, has following beneficial effect:
1, the open type liquid film heat transfer technology that the present invention adopts is no longer subject to the restriction of caliber size, theoretical velocity and Reynolds number can arbitrarily increase, be that the longer mean flow rate in heat exchange inclined-plane is higher, thereby can reach high convection transfer rate, can easily bear 1MW/m
2above optically focused solar illumination.Fluid in heat dump of the present invention is the free landing campaign in inclined-plane simultaneously, no longer needs high-lift pump to overcome on-way resistance, and required pump lift is only ground heat dump hypothesis height.
2, the risk that the open type liquid film heat transfer technology that the present invention adopts has avoided endothermic tube to stop up completely, and can be widely used in containing fused salt in interior various high-temperature liquid state working medium, significantly reduced the requirement to Jing Chang operation technology and electric tracing thermal insulation technology.
3, the present invention, in conjunction with the tower photo-thermal power generation technology of secondary reflection type, adopts the cavate liquid film heat dump of opening upwards, goes for the condenser field of arbitrary shape system, heat dump installation near the ground, and engineering is simple and safe.The liquid film heat-absorbent surface that the present invention adopts is positioned at cavity bottom, and cavity has adopted special multilayer baffling eddy clearing structure design, effectively reduces the impact of the outside wind field of cavity on heat exchange in chamber, significantly reduces convection losses.
In this description, the present invention is described with reference to its specific embodiment.But, still can make various modifications and conversion obviously and not deviate from the spirit and scope of the present invention.Therefore, description and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (11)
1. a high-temperature liquid state film solar cavity type heat absorber, it is characterized in that, comprise high temperature resistant heat insultating cavity (1), the top of heat insultating cavity (1) one side that this is high temperature resistant is provided with liquid working substance entrance (2), the bottom of this is high temperature resistant heat insultating cavity (1) opposite side is provided with liquid working substance outlet (7), described liquid working substance entrance (2) locates to be provided with high-order film formation device (3), described liquid working substance outlet (7) locates to be provided with low level collecting tank (5) and high temperature submerged pump (6), liquid film heat-absorbent surface (4) is obliquely installed in described high temperature resistant heat insultating cavity (1), this liquid film heat-absorbent surface (4) is connected with described liquid working substance entrance (7) by described high-order film formation device (3), this liquid film heat-absorbent surface (4) is connected with described liquid working substance outlet (7) with high temperature submerged pump (6) by described low level collecting tank (5).
2. high-temperature liquid state film solar cavity type heat absorber according to claim 1, is characterized in that, described high-order film formation device (3) comprises 2 or 3 grade of first dashpot (9), and the bottom surface of described the first dashpot (9) is circular arc.
3. high-temperature liquid state film solar cavity type heat absorber according to claim 2, it is characterized in that, between described the first dashpot (9), by the described stalk (10) that overflows, cut apart, and this surface of overflowing stalk (10) is arcuate surface, and the height that overflows stalk (10) located of near described liquid working substance outlet (7) is lower than the height that overflows stalk (10) that closely liquid working substance entrance (2) is located.
4. high-temperature liquid state film solar cavity type heat absorber according to claim 1, it is characterized in that, described high-order film formation device (3) comprises 2 grade of second dashpot (13), the bottom surface of described the second dashpot (13) is arc, and the bottom of the second dashpot (13) that nearly described liquid working substance outlet (7) is located has a plurality of circular holes (14) separately, liquid working substance (8) flows into described liquid film heat-absorbent surface (4) by this circular hole (14).
5. according to the high-temperature liquid state film solar cavity type heat absorber described in claim 2 or 4, it is characterized in that, along the first dashpot (9) described in each or along the second dashpot (13) described in each and away from a side of described liquid working substance entrance (2), be provided with maintenance emptying valve (11), this overhauls emptying valve (11) and is connected with emptying pipe (12), and described the first dashpot (9) and described the second dashpot (13) are all located to the emptying valve of described maintenance (11).
6. high-temperature liquid state film solar cavity type heat absorber according to claim 1, it is characterized in that, described low level collecting tank (5) comprises surge chamber (15) and fluid reservoir (18), described liquid working substance (8) flows into this surge chamber (15) by described liquid film heat-absorbent surface (4), the inner surface of described surge chamber (15) is being just parabolic terminal buffering suface (16) corresponding to a side of liquid working substance (8), the central lowest part of described surge chamber (15) is provided with liquid collecting hole (17), the bottom of this surge chamber (15) all tilts to central authorities, the below of described liquid collecting hole (17) is provided with fluid reservoir (18).
7. high-temperature liquid state film solar cavity type heat absorber according to claim 6, it is characterized in that, described liquid working substance outlet (7) locates to be provided with high temperature submerged pump (6), and described liquid working substance (8) pumps described liquid working substance outlet (7) by this high temperature submerged pump (6) by described fluid reservoir (18).
8. high-temperature liquid state film solar cavity type heat absorber according to claim 1, is characterized in that, the inner surface of described high temperature resistant heat insultating cavity (1) is provided with deflection plate (19), and described deflection plate (19) is parallel to horizontal plane.
9. high-temperature liquid state film solar cavity type heat absorber according to claim 1, it is characterized in that, described liquid film heat-absorbent surface (4) is zigzag with the surface that described liquid working substance (8) contacts, and the face width of tooth of this liquid film heat-absorbent surface (4) is more than or equal to 50mm.
10. high-temperature liquid state film solar cavity type heat absorber according to claim 1, is characterized in that, described liquid film heat-absorbent surface (4) is more than or equal to 40 ° with the angle of horizontal plane.
11. high-temperature liquid state film solar cavity type heat absorbers according to claim 4, is characterized in that, the diameter of described circular hole (14) is 50～70mm, and this circular hole (14) is 200～400mm along the spacing of described the second dashpot (13) direction.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4085732A (en) * | 1976-06-07 | 1978-04-25 | Hysom Ervin E | Method and apparatus for heating a liquid using solar energy |
| US4329204A (en) * | 1980-02-19 | 1982-05-11 | Petrek John P | Multiple effect thin film distillation system |
| JPS57104254U (en) * | 1980-12-19 | 1982-06-26 | ||
| CN2384175Y (en) * | 1999-07-13 | 2000-06-21 | 刘万年 | Horizontal shining double-layer thermal insulation solar water heater |
| CN203744566U (en) * | 2013-11-04 | 2014-07-30 | 游思梁 | High-temperature liquid membrane solar energy cavity-type heat absorber |
-
2013
- 2013-11-04 CN CN201310539707.5A patent/CN103557604B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4085732A (en) * | 1976-06-07 | 1978-04-25 | Hysom Ervin E | Method and apparatus for heating a liquid using solar energy |
| US4329204A (en) * | 1980-02-19 | 1982-05-11 | Petrek John P | Multiple effect thin film distillation system |
| JPS57104254U (en) * | 1980-12-19 | 1982-06-26 | ||
| CN2384175Y (en) * | 1999-07-13 | 2000-06-21 | 刘万年 | Horizontal shining double-layer thermal insulation solar water heater |
| CN203744566U (en) * | 2013-11-04 | 2014-07-30 | 游思梁 | High-temperature liquid membrane solar energy cavity-type heat absorber |
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