CN100387913C - Hollow chamber type solar energy receiver - Google Patents
Hollow chamber type solar energy receiver Download PDFInfo
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- CN100387913C CN100387913C CNB2006100391250A CN200610039125A CN100387913C CN 100387913 C CN100387913 C CN 100387913C CN B2006100391250 A CNB2006100391250 A CN B2006100391250A CN 200610039125 A CN200610039125 A CN 200610039125A CN 100387913 C CN100387913 C CN 100387913C
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- heat
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- working fluid
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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
- Y02E10/44—Heat exchange systems
Abstract
The present invention relates to a cavity type solar energy receiver for a solar energy tower type heat electricity generator, which belongs to the technical field of utilizing solar energy. The receiver comprises a concave heat absorption cavity, a concave glass window, a working fluid inlet pipe and a working fluid outlet pipe, wherein the concave glass window is arranged on the heat absorption cavity for receiving incoming sunlight, and the working fluid inlet pipe and the working fluid outlet pipe are communicated with the heat absorption cavity; the heat absorption cavity is provided with a ring cavity around the glass window, and the tail end of the working fluid inlet pipe is communicated with the ring cavity; the surface of the ring cavity adjacent to the glass window is fixed with needle pipes arranged according to a preset rule, and the needle pipes are communicated with the ring cavity and the heat absorption cavity. When working fluid enters the heat absorption cavity from the inlet pipe through the needle pipes, fluid in a cold state can directly blow the irradiated glass window to be cold, and thereby, the heat on the surface is carried away. When the density and the direction of the distribution of the needle pipes are reasonable, the present invention performs the uniform cooling effect on the glass window, avoids local overheat and ensures long safe operation.
Description
Technical field
The present invention relates to a kind of solar receiver, the hollow chamber type solar energy receiver that particularly a kind of suitable solar energy tower type thermal generation device uses belongs to the solar energy utilization technique field.
Background technology
Solar energy is inexhaustible regenerative resource, and in today of energy situation sternness like this, development and use solar energy is one of important channel of realizing energy supply diversification and assurance energy supply security.
In many solar energy utilizes, the tower type thermal generation device has the technique device of huge competitiveness beyond doubt, the experimental study proof solar energy thermal-power-generating of developed country is to be adapted to the effective way that heavy industrialization is used, therefore greatly developing solar energy thermal-power-generating not only can provide desirable clean energy resource for us, also can open up a new industry group, and bring revolutionary solution might for fully nervous energy problem.Its basic principle is to utilize numerous heliostats, with solar heat radiation reflection to the solar receiver that places high top of tower, produce superheated steam or high temperature air by heating working medium, driving steam turbine group or gas turbine unit generation, thus solar energy is converted to electric energy.
The high temperature solar receiver is the core component of tower type thermal generation system.Various countries have carried out useful research around this technology, mainly concentrate on countries such as Spain, Israel, the U.S..The high temperature solar receiver roughly is divided into two kinds of forms: the outside is subjected to light type and cavity type.The former with the latter is compared, and obviously its heat loss is bigger, and the latter's characteristics are to need not the solar energy high temperature coating for selective absorption.For the cavity type receiver, present development trend is: the working medium temperature parameter is more and more higher, is more suitable for the gas turbine power generation circulation in modern high-temperature parameter like this.
Through retrieval, typical cavity type receiver technical scheme can be summarized as follows: the hood-like member of the most of adopting quartz glass of prior art scheme all has a detailed description in United States Patent (USP) 5421322,6516794,5323764 as the window material that sees through sunlight.Secondly, according to heat transfer theory, the channels designs of working fluid is become various structures, its principle is to reduce resistance to greatest extent, the working fluid homogenizing, and heat loss reduces to greatest extent, reduces hot-spot and the stress that causes of expanding with heat and contract with cold etc.The open defect of above prior art is as follows: the hood-like member of (1) adopting quartz glass is as the window material that sees through sunlight, owing to directly contact with the HTHP working fluid, though the possibility that allows the cold conditions working fluid flow from the cloche surface is provided when the fluidised form design of fluid, but in fact, the true mobility status of fluid is more than the complexity that designs and envision, can't reach the result of imagination in advance fully, so can cause the cloche local temperature than higher, cause cracking, fragmentation easily; (2) further weak point is, receiver all has only the heat absorption function, need finish heat accumulation function by the regenerative apparatus that does not belong to receiver, so that play a role under the not enough condition of sunshine.
Summary of the invention
At above present situation, the primary technical problem that will solve of the present invention is: a kind of hollow chamber type solar energy receiver is provided, this receiver can effectively reduce the temperature of glass window, thereby prevents the generation of hot-spot, guarantees the permanent work of glass window safety.
Further technical problem to be solved by this invention is, a kind of hollow chamber type solar energy receiver is provided, and this receiver has the heat absorption and heat storage function simultaneously, thereby can satisfy the bad accumulation of heat generating requirement of solar irradiation in the short time.
For solving above-mentioned primary technical problem, the technical scheme that adopts of the present invention is: a kind of hollow chamber type solar energy receiver, comprise inner concavity heat-absorbing chamber, be arranged on the heat-absorbing chamber indent glass window that receives the incident sunshine, and the working fluid inlet tube and the working fluid outlet that are communicated in heat-absorbing chamber, described heat-absorbing chamber is provided with the ring cavity around described glass window, described working fluid inlet tube is terminal to be communicated with described ring cavity, the surface that described ring cavity closes on glass window is fixed with the needle tubing of arranging by predetermined rule, and described needle tubing is communicated with ring cavity and heat-absorbing chamber.
Because glass window is in the face of being communicated with many rows needle tubing of heat-absorbing chamber, when working fluid when inlet tube enters heat-absorbing chamber by needle tubing, the cold conditions fluid can directly blow " cold " by the glass window of radiation, thereby surperficial heat is taken away, as long as needle tubing arrange density and direction is reasonable, can play the effect of even cooling to glass window, avoid hot-spot, guarantee long-term security work.In addition, unlikely too high in order further to guarantee the ring cavity case temperature, its outer wall can be equipped with the water cooling endless tube.
In the present invention, scatter and disappear, outside this heat-absorbing chamber, can be coated with heat-insulation layer for solving above-mentioned further technical problem, be the heat that prevents in the heat-absorbing chamber.Also can add flame retardant coating between this heat-insulation layer and the heat-absorbing chamber, can coat shell outside heat-insulation layer, the working fluid inlet tube is arranged in outer heat-insulation layer or the flame retardant coating that coats of heat-absorbing chamber.Like this, on the one hand, can make full use of the cold conditions working fluid in the emittance preheating inlet pipe of containing in heat-insulation layer and/or flame retardant coating, it is sent in the heat-absorbing chamber, reach the effect of comprehensive utilization; On the other hand, the cold conditions fluid in the inlet tube also can play cooling effect to heat-insulation layer material and/or refractory material, can prolong its service life.
Further improving of above technical scheme is that the heat-absorbing chamber rear also can be provided with the accumulation of heat chamber, this accumulation of heat chamber is provided with the fluid intake that is communicated in described heat-absorbing chamber and is communicated in the fluid issuing of working fluid outlet, described working fluid outlet is communicated in described heat-absorbing chamber by this fluid issuing and inlet, is filled with the heat storage material of high heat capacity in this accumulation of heat chamber.Like this, part heat in the heat-absorbing chamber can be put aside in the accumulation of heat chamber by the heat storage material of high heat capacity, when solar irradiation is bad in the short time, can directly utilize the heat of savings in the accumulation of heat chamber to satisfy the demand that accumulation of heat is generated electricity, thereby make hollow chamber type solar energy receiver of the present invention integrate heat absorption, heat accumulation function, efficient is higher, and practicality is stronger.
The heat storage material of filling in the above-mentioned accumulation of heat chamber can be spherical, tubulose or bulk etc.The part that heat-absorbing chamber is relative with glass window can be surrounded by absorber, and this absorber is refractory metal or ceramic hood-like member.This absorber surface has some apertures, and the tubulose absorber is stretched out at these aperture places in heat-absorbing chamber, and the mouth of pipe of tubulose absorber constitutes the fluid intake on the described accumulation of heat chamber.Solar receiver integral body of the present invention can be symmetrical expression and arrange.
In a word, hollow chamber type solar energy receiver of the present invention is rational in infrastructure, and glass window is in the temperature lower region, and thermally equivalent; The working fluid flow path is reasonable, fluid stable, and heat loss is little, the efficient height, practicality is more intense.
Description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing.
Fig. 1 is the structural representation of one embodiment of the invention.
The specific embodiment
Embodiment one
The hollow chamber type solar energy receiver of present embodiment as shown in Figure 1, comprise recess heat-absorbing chamber 1, be arranged on the heat-absorbing chamber 1 the indent glass window 2 that receives the incident sunshine, and the working fluid inlet tube 3 and the working fluid outlet 4 that are communicated in heat-absorbing chamber 1.Working fluid inlet tube 3 ring cavities 5 terminal and around glass window 2 periphery are communicated with.Ring cavity 5 is communicated in heat-absorbing chamber 1 by the needle tubing 61,62,63,64 that many rows arrange along glass window 2 peripheries.Like this, because glass window 2 is over against being communicated in many rows needle tubings 61,62,63,64 heat-absorbing chamber 1, that arrange along glass window 2 periphery, the cold conditions fluid of sending in the needle tubing from working fluid inlet tube 3 can directly blow " cold " by the glass window 2 of radiation, and surperficial heat is taken away; Since needle tubing 61,62,63,64 arrange density and incline direction through well-designed, guarantee that glass window 2 is subjected to uniform cooling effect, softening, cracking, the fragmentation of avoiding glass window 2 to cause because of localized hyperthermia, the service life of having improved glass window 2.The present embodiment working fluid adopts air.
As shown in Figure 1, scatter and disappear, outside this heat-absorbing chamber 1, can be coated with heat-insulation layer 7 for preventing the heat in the described heat-absorbing chamber 1.Also can be provided with flame retardant coating 8 between this heat-insulation layer 7 and the heat-absorbing chamber 1, be coated with shell 9 in described heat-insulation layer 7, described working fluid inlet tube 3 is arranged in the heat-absorbing chamber 1 outer heat-insulation layer 7 and flame retardant coating 8 that coats (to be understood easily, can have during concrete enforcement to be arranged in heat-insulation layer separately, to be positioned at flame retardant coating and pass through heat-insulation layer and flame retardant coating separately, and various structural changes such as be clipped between two-layer).Like this, the present invention makes full use of the emittance of containing in heat-insulation layer 7 and/or flame retardant coating 8, comes the cold conditions working fluid in the preheating inlet pipe 3, sends into then in the heat-absorbing chamber 1, reaches the effect of comprehensive utilization; Otherwise the cold conditions fluid in the inlet tube 3 also can play cooling effect to heat-insulation layer 7 materials and/or flame retardant coating 8 materials, can prolong the service life of relevant material.
In the present embodiment, as shown in Figure 1, heat-absorbing chamber 1 rear also can further be provided with accumulation of heat chamber 10, this accumulation of heat chamber 10 is provided with fluid intake 11 that is communicated in heat-absorbing chamber 1 and the fluid issuing 12 that is communicated in working fluid outlet 4, working fluid outlet 4 is communicated in described heat-absorbing chamber 1 by this fluid issuing 12 and inlet 11, is filled with the spherical heat storage material 13 of high heat capacity in this accumulation of heat chamber 10.Like this, part heat in the heat-absorbing chamber 1 can be put aside in accumulation of heat chamber 10 by the heat storage material 13 of high heat capacity, under short time solar irradiation condition of poor, directly can satisfy accumulation of heat generating requirement by the heat of savings in this accumulation of heat chamber 10, thereby make hollow chamber type solar energy receiver of the present invention integrate heat absorption, heat accumulation function, the efficient height, practical.
In the present embodiment, solar receiver integral body is symmetrical expression arranges, as shown in Figure 1, heat-absorbing chamber 1 and glass window 2 relative parts can be surrounded by absorber 14, and this absorber 14 is refractory metal or ceramic hood-like member.Accumulation of heat chamber 10 can be formed by the wall of hood-like absorber 14 and flame retardant coating 8.These absorber 14 surfaces can have some apertures for direction of flow accumulation of heat chamber 10, stretch out tubulose absorber 15 in those aperture places in heat-absorbing chamber 1, and the mouth of pipe of those tubulose absorbers 15 constitutes the fluid intake 11 on the described accumulation of heat chamber 10.Those numerous tubulose absorbers 15 constitute the absorber array, have not only increased endotherm area, and make the flow direction of working fluid and tubulose absorber 15 intersect, and heat exchange is more abundant.
During work, the flow process of working fluid is: at first pump into the cold conditions fluid by compression pump and enter working fluid inlet tube 3, owing to the radiation effect of flame retardant coating 8 and heat-insulation layer 7, the working fluids in the inlet tube 3 can obtain preliminary pre-heat effect in this process, and temperature slightly raises; Working fluid flows into the ring cavity 5 that glass window 2 peripheries are installed then, and needle tubing 61,62,63,64 ejections by being communicated with ring cavity 5, the high-pressure fluid of ejection blows " cold " glass window 2 surfaces, take away surperficial heat rapidly, working fluid enters in the heat-absorbing chamber 1, because the heat-absorbing action of absorber 14, the temperature of working fluid raises rapidly, enter in the accumulation of heat chamber 10 by tubulose absorber 15, behind the fluid issuing 12 through accumulation of heat chamber 10, finally become the HTHP working fluid by outlet 4 outputs.
The glass window temperature that experiment showed, the present embodiment hollow chamber type solar energy receiver is lower, is heated evenly, and the working fluid flow path is reasonable, fluid stable, and heat loss is little, and the efficient height is therefore practical, can apply.
Except that above embodiment, the present invention also has other numerous embodiments, and every those skilled in the art are done on basis of the present invention is equal to and replaces or similar combined transformation all belongs to this patent protection domain.
Claims (10)
1. hollow chamber type solar energy receiver, comprise inner concavity heat-absorbing chamber, be arranged on the heat-absorbing chamber indent glass window that receives the incident sunshine, and the working fluid inlet tube and the working fluid outlet that are communicated in heat-absorbing chamber, it is characterized in that: described heat-absorbing chamber is provided with the ring cavity around described glass window, described working fluid inlet tube is terminal to be communicated with described ring cavity, the surface that described ring cavity closes on glass window is fixed with the needle tubing of arranging by predetermined rule, and described needle tubing is communicated with ring cavity and heat-absorbing chamber.
2. hollow chamber type solar energy receiver as claimed in claim 1 is characterized in that: described heat-absorbing chamber is coated with heat-insulation layer.
3. hollow chamber type solar energy receiver as claimed in claim 2, it is characterized in that: described heat-absorbing chamber rear is provided with the accumulation of heat chamber, described accumulation of heat chamber is provided with the fluid intake that is communicated in described heat-absorbing chamber and is communicated in the fluid issuing of working fluid outlet, described working fluid outlet is communicated in described heat-absorbing chamber by fluid issuing and inlet, is filled with the heat storage material of high heat capacity in the described accumulation of heat chamber.
4. hollow chamber type solar energy receiver as claimed in claim 3 is characterized in that: described ring cavity outer wall is equipped with the water cooling endless tube.
5. hollow chamber type solar energy receiver as claimed in claim 3 is characterized in that: be provided with flame retardant coating between described heat-insulation layer and the heat-absorbing chamber, described heat-insulation layer is coated with shell.
6. hollow chamber type solar energy receiver as claimed in claim 5 is characterized in that: described working fluid inlet tube is arranged in outer heat-insulation layer and the flame retardant coating that coats of heat-absorbing chamber.
7. hollow chamber type solar energy receiver as claimed in claim 6 is characterized in that: the heat storage material of filling in the described accumulation of heat chamber is spherical, tubulose or bulk.
8. hollow chamber type solar energy receiver as claimed in claim 6 is characterized in that: described heat-absorbing chamber below described ring cavity and the part relative with glass window surround by absorber, described absorber is refractory metal or ceramic hood-like member.
9. hollow chamber type solar energy receiver as claimed in claim 8 is characterized in that: described absorber surface has aperture, and the tubulose absorber is stretched out at described aperture place in heat-absorbing chamber, and the mouth of pipe of described tubulose absorber constitutes the fluid intake on the accumulation of heat chamber.
10. as the arbitrary described hollow chamber type solar energy receiver of claim 1 to 9, it is characterized in that: described hollow chamber type solar energy receiver integral body is symmetrical expression and arranges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100391250A CN100387913C (en) | 2006-03-28 | 2006-03-28 | Hollow chamber type solar energy receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100391250A CN100387913C (en) | 2006-03-28 | 2006-03-28 | Hollow chamber type solar energy receiver |
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| CN1821679A CN1821679A (en) | 2006-08-23 |
| CN100387913C true CN100387913C (en) | 2008-05-14 |
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| CNB2006100391250A Expired - Fee Related CN100387913C (en) | 2006-03-28 | 2006-03-28 | Hollow chamber type solar energy receiver |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727509A (en) * | 2013-12-18 | 2014-04-16 | 伍禄军 | Cavity type solar steam boiler |
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| CN100552320C (en) * | 2008-01-14 | 2009-10-21 | 东南大学 | Special-shaped modular type hollow space solar energy high-temperature receiver |
| CN101504331B (en) * | 2009-02-27 | 2011-01-05 | 西安交通大学 | Simulating device for solar cavity type heat absorber |
| CN101706161B (en) * | 2009-11-25 | 2011-09-14 | 哈尔滨工业大学 | Cavity type solar heat absorber provided with optical window |
| CN113776203A (en) | 2010-09-16 | 2021-12-10 | 威尔逊太阳能公司 | Concentrator for solar receiver |
| CN102353156B (en) * | 2011-08-15 | 2013-01-02 | 哈尔滨工业大学 | Cylindrical-cavity type solar heat absorber with internally-convex bottom surface |
| CN102353153B (en) * | 2011-09-05 | 2012-09-12 | 湖南大学 | Volume heat exchange heat absorber for solar heat generation system |
| CN112797649A (en) * | 2012-03-21 | 2021-05-14 | 威尔逊太阳能公司 | Solar receiver, power generation system and fluid flow control device |
| CN103090555B (en) * | 2013-01-22 | 2014-10-29 | 北京航空航天大学 | Wedge structure cavity type solar energy receiver |
| CN103644657B (en) * | 2013-12-26 | 2015-08-19 | 哈尔滨工业大学 | A kind of high temperature solar heat dump |
| CN104596125B (en) * | 2014-11-03 | 2017-02-15 | 国家电网公司 | Cavity solar receiver with lighting cover |
| CN104713251B (en) * | 2015-03-24 | 2017-05-24 | 东方电气集团东方锅炉股份有限公司 | Solar photo-thermal power station and heat absorption system thereof |
| CH711030B1 (en) * | 2015-04-08 | 2019-04-30 | Bech Ulrich | Receiver for collecting concentrated radiation. |
| CN108645060B (en) * | 2018-04-26 | 2020-09-22 | 福建工程学院 | Solar high-temperature heat absorber with three-layer mixed gradient structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727509A (en) * | 2013-12-18 | 2014-04-16 | 伍禄军 | Cavity type solar steam boiler |
| CN103727509B (en) * | 2013-12-18 | 2015-09-30 | 伍禄军 | A kind of cavity-type solar steam boiler |
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| CN1821679A (en) | 2006-08-23 |
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