CN201138082Y - solar receiver - Google Patents

solar receiver Download PDF

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Publication number
CN201138082Y
CN201138082Y CNU2007200609941U CN200720060994U CN201138082Y CN 201138082 Y CN201138082 Y CN 201138082Y CN U2007200609941 U CNU2007200609941 U CN U2007200609941U CN 200720060994 U CN200720060994 U CN 200720060994U CN 201138082 Y CN201138082 Y CN 201138082Y
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insulation layer
inner layer
heat
receiving device
heat carrier
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廉永旺
马伟斌
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Guangzhou Institute of Energy Conversion of CAS
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Guangzhou Institute of Energy Conversion of CAS
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers
    • Y02E10/44Heat exchange systems

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Abstract

本实用新型公开了一种太阳能接收装置,该接收装置包括外保温层及内层,外保温层与内层之间的密封空间为热载体腔,内层所围的空间为吸热腔;在外保温层上设有热载体进口、热载体出口,热载体腔通过该热载体进口、热载体出口分别与外界相通;在外保温层、内层上相对应位置设有透光口,外界光线可通过该透光口进入到吸热腔中。本实用新型太阳光反射及热辐射小,能效高。

Figure 200720060994

The utility model discloses a solar receiving device. The receiving device comprises an outer thermal insulation layer and an inner layer. The sealed space between the outer thermal insulation layer and the inner layer is a heat carrier cavity, and the space surrounded by the inner layer is a heat absorption cavity; Heat carrier inlets and heat carrier outlets are provided on the insulation layer, and the heat carrier cavity communicates with the outside world through the heat carrier inlets and heat carrier outlets respectively; light-transmitting ports are provided at corresponding positions on the outer insulation layer and the inner layer, and external light can pass through The light-transmitting port enters into the heat-absorbing cavity. The utility model has small sunlight reflection and heat radiation and high energy efficiency.

Figure 200720060994

Description

太阳能接收装置 solar receiver

技术领域technical field

本实用新型涉及一种太阳能接收装置。The utility model relates to a solar energy receiving device.

背景技术Background technique

太阳能热利用领域中,太阳能接收装置主要将太阳能转化为热能,其热利用率的高低决定太阳能装置的效果,现常见的高温太阳能装置的结构主要是:外层为透明玻璃管、内层为金属管,外层与内层之间为真空层,在内层金属管外表面涂有太阳能选择性吸收涂层,内层内的空间为热载体腔;太阳光通过聚焦之后,穿过透明玻璃层而照射到内层金属管上,内层金属管内的热载体将热量吸收;但随着温度的升高,内层本身也向外辐射热量,导致热能的损失,内层外表面的太阳能选择性吸收涂层的吸收率、发射率的微小变化都会对设备的性能造成很大影响,所以,追求更高的吸收率和更低的发射率是太阳能中高温技术研究的关键,太阳能选择性吸收涂层的吸收率不可能无限制提高,在当前技术条件下,吸收率仅有百分之九十多一点,仍有大量太阳辐射散失;由于热辐射量与温度的四次方成正比,随着内层温度的升高,其热辐射量成四次方增长,在太阳能中高温应用设备中,有相当多一部分能量是通过太阳能吸收涂层自身发射出去,造成极大的浪费;同时,由于玻璃与金属封接工艺较为复杂,其制造成本高,且稳定性不高。In the field of solar heat utilization, the solar receiver mainly converts solar energy into heat energy, and the heat utilization rate determines the effect of the solar device. The structure of the common high-temperature solar device is mainly: the outer layer is a transparent glass tube, and the inner layer is a metal Tube, between the outer layer and the inner layer is a vacuum layer, the outer surface of the inner metal tube is coated with a solar selective absorption coating, and the space in the inner layer is a heat carrier cavity; after the sunlight is focused, it passes through the transparent glass layer When irradiated on the inner metal tube, the heat carrier in the inner metal tube absorbs the heat; but as the temperature rises, the inner layer itself radiates heat outward, resulting in the loss of heat energy, and the solar energy selectivity on the outer surface of the inner layer Small changes in the absorptivity and emissivity of the absorbing coating will have a great impact on the performance of the device. Therefore, the pursuit of higher absorptivity and lower emissivity is the key to the research of solar energy medium and high temperature technology. Solar selective absorbing coatings The absorption rate of the layer cannot be increased without limit. Under the current technical conditions, the absorption rate is only a little over 90%, and a large amount of solar radiation is still lost; since the amount of heat radiation is proportional to the fourth power of the temperature, with As the temperature of the inner layer rises, the amount of heat radiation increases by the fourth power. In solar energy medium and high temperature application equipment, a considerable part of the energy is emitted through the solar absorbing coating itself, resulting in great waste; at the same time, due to the The sealing process with the metal is relatively complicated, the manufacturing cost is high, and the stability is not high.

发明内容Contents of the invention

本实用新型的目的在于提供一种太阳能接收装置,该接收装置的能量发射率低,能效高。The purpose of the utility model is to provide a solar receiving device, which has low energy emission rate and high energy efficiency.

本实用新型是通过以下技术方案来实现的:The utility model is achieved through the following technical solutions:

一种太阳能接收装置,该接收装置包括外保温层及内层,外保温层与内层之间的密封空间为热载体腔,内层所围的空间为吸热腔;在外保温层上设有热载体进口、热载体出口,热载体腔通过该热载体进口、热载体出口分别与外界相通;在外保温层、内层上相对应位置设有透光口,外界光线可通过该透光口进入到吸热腔中。A solar receiving device, the receiving device comprises an outer thermal insulation layer and an inner layer, the sealed space between the outer thermal insulation layer and the inner layer is a heat carrier cavity, and the space surrounded by the inner layer is a heat absorption cavity; the outer thermal insulation layer is provided with Heat carrier inlet, heat carrier outlet, the heat carrier cavity communicates with the outside world through the heat carrier inlet and heat carrier outlet respectively; a light-transmitting port is provided at the corresponding position on the outer insulation layer and the inner layer, and the external light can enter through the light-transmitting port into the heat sink.

本实用新型中,太阳能光经聚焦后,通过透光口进入到吸热腔中,在吸热腔内进行多次反射并被内层吸收,随着内层温度的升高,其热量通过热载体腔的热载体吸收;本实用新型中,太阳光进入到吸热腔后,无法轻易的再次从透光口中辐射出来,吸收腔温度升高后,其内的热量也不会从透光口向外散发,相对于现有技术来讲,本实用新型几乎可将全部进入吸热腔内的太阳能转化为热能,能效高,结构简单;本实用新型若用于中高温太阳能的接收,由于热辐射小,接收效果更为明显。In the utility model, after the solar light is focused, it enters the heat-absorbing cavity through the light-transmitting port, and is reflected in the heat-absorbing cavity for many times and is absorbed by the inner layer. The heat carrier in the carrier chamber absorbs; in the utility model, after sunlight enters the heat-absorbing chamber, it cannot easily radiate out from the light-transmitting port again, and after the temperature of the absorbing chamber rises, the heat in it will not pass through the light-transmitting port. Compared with the prior art, the utility model can convert almost all the solar energy entering the heat-absorbing cavity into heat energy, with high energy efficiency and simple structure; if the utility model is used for receiving medium and high temperature solar energy, due to heat The radiation is small, and the receiving effect is more obvious.

本实用新型的进一步改进是:A further improvement of the utility model is:

所述透光口处设有透明玻璃而将所述吸热腔封闭。透明玻璃可避免吸热腔内的空气流动而将损失热量,也可避免灰尘进入到吸热腔中。Transparent glass is provided at the light-transmitting opening to seal the heat-absorbing cavity. The transparent glass can prevent the air flow in the heat-absorbing cavity from losing heat, and can also prevent dust from entering the heat-absorbing cavity.

所述外保温层、内层均为球状,所述透光口呈孔状。该结构可用于太阳光的点聚焦,此时,接收装置整体为球状。Both the outer thermal insulation layer and the inner layer are spherical, and the light-transmitting opening is hole-like. This structure can be used for point focusing of sunlight, and at this time, the receiving device is spherical in shape as a whole.

所述外保温层、内层均为柱状,所述透光口呈条状。该结构可用于太阳光的线聚焦,进一步结构是,所述外保温层、内层均为圆柱状。Both the outer insulation layer and the inner layer are columnar, and the light-transmitting opening is strip-shaped. This structure can be used for line focusing of sunlight, and the further structure is that both the outer thermal insulation layer and the inner layer are cylindrical.

所述外保温层包括保温层内层及由保温材料制成的保温层外层。保温层外层应具有耐高温性能,以免在高温下脆化或烧损,保温层内层用于保证外保温层整体的强度及密封性。The outer thermal insulation layer includes an inner thermal insulation layer and an outer thermal insulation layer made of thermal insulation material. The outer layer of the insulation layer should have high temperature resistance to avoid embrittlement or burning at high temperatures, and the inner layer of the insulation layer is used to ensure the overall strength and sealing of the outer insulation layer.

所述内层采用金属材料制成。采用金属材料,使内层的导热性好。The inner layer is made of metal material. The metal material is used to make the inner layer have good thermal conductivity.

所述内层的内表面附着有耐高温太阳能选择性吸收涂层。The inner surface of the inner layer is attached with a high temperature resistant solar selective absorbing coating.

本实用新型尤其适用于高温太阳能的接收,当然由于本实用新型的结构设计,其使用范围并不限于此,甚至也可用于低温太阳能的接收。The utility model is especially suitable for receiving high-temperature solar energy. Of course, due to the structural design of the utility model, its scope of application is not limited thereto, and it can even be used for receiving low-temperature solar energy.

附图说明Description of drawings

图1是本实用新型实施例一的纵向剖视图;Fig. 1 is the longitudinal sectional view of the utility model embodiment one;

图2是图1的横向剖视图;Fig. 2 is a transverse sectional view of Fig. 1;

图3是使用示意图;Figure 3 is a schematic diagram of use;

图4是本实用新型实施例二的剖视图;Fig. 4 is the sectional view of the second embodiment of the utility model;

图5是图4的仰视图;Fig. 5 is the bottom view of Fig. 4;

附图标记说明:Explanation of reference signs:

1、保温层外层,2、内层,3、热载体腔,4、吸热腔,5、热载体进口,6、热载体出口,7、透光口,8、透明玻璃,9、保温层内层。1. Outer layer of insulation layer, 2. Inner layer, 3. Heat carrier cavity, 4. Heat absorbing cavity, 5. Heat carrier inlet, 6. Heat carrier outlet, 7. Light transmission port, 8. Transparent glass, 9. Heat preservation layer inner layer.

具体实施方式Detailed ways

实施例一Embodiment one

如图1至图2所示,一种太阳能接收装置,该接收装置包括外保温层及内层2,外保温层与内层2之间的密封空间为热载体腔3,内层2所围的空间为吸热腔4;在外保温层上设有热载体进口5、热载体出口6,热载体腔3通过该热载体进口5、热载体出口6分别与外界相通;在外保温层、内层2上相对应位置设有透光口7,外界光线可通过该透光口7进入到吸热腔4中。As shown in Fig. 1 to Fig. 2, a kind of solar energy receiving device, this receiving device comprises outer thermal insulation layer and inner layer 2, and the sealed space between outer thermal insulation layer and inner layer 2 is heat carrier cavity 3, and inner layer 2 surrounds The space inside is the heat-absorbing cavity 4; the heat carrier inlet 5 and the heat carrier outlet 6 are arranged on the outer insulation layer, and the heat carrier chamber 3 communicates with the outside through the heat carrier inlet 5 and the heat carrier outlet 6 respectively; 2 is provided with a light-transmitting port 7 at a corresponding position, and external light can enter the heat-absorbing cavity 4 through the light-transmitting port 7 .

其中,外保温层包括保温层内层9以及由保温材料制成的保温层外层1,透光口7处设有透明玻璃8而将吸热腔4封闭,外保温层、内层2均为圆柱状,透光口7呈条状,外保温层与内层2的轴心重合;内层2采用金属材料制成,其内表面附着有耐高温太阳能选择性吸收涂层。Wherein, the outer insulation layer includes an inner layer 9 of the insulation layer and an outer layer 1 of the insulation layer made of insulation material, a transparent glass 8 is provided at the light-transmitting opening 7 to seal the heat-absorbing cavity 4, and the outer insulation layer and the inner layer 2 are both It is cylindrical, the light-transmitting opening 7 is strip-shaped, and the axis of the outer insulation layer and the inner layer 2 coincide; the inner layer 2 is made of metal material, and its inner surface is attached with a high-temperature resistant solar selective absorption coating.

如图3所示,若聚焦后的太阳光通过透光口7进入到吸热腔4后,在吸热腔4内经多次反射,能量逐渐被内层2上的吸收涂层所吸收,而将太阳能转化为热能使内层温度升高,所产生的热能被热载体所带走;本实施例中,太阳光进入吸热腔4后,只有极小部分可通过透光孔7散出,其余均被吸收,当内层2温度升高后,由于外保温层的作用,热量也不会向外辐射,本实施例相对于现有技术而言,光的反射以及热辐射均非常小,能效高。As shown in Figure 3, if the focused sunlight enters the heat-absorbing chamber 4 through the light-transmitting port 7, it is reflected many times in the heat-absorbing chamber 4, and the energy is gradually absorbed by the absorbing coating on the inner layer 2, while Convert solar energy into heat energy to increase the temperature of the inner layer, and the generated heat energy is taken away by the heat carrier; in this embodiment, after sunlight enters the heat-absorbing cavity 4, only a very small part can be emitted through the light-transmitting hole 7, The rest are all absorbed. When the temperature of the inner layer 2 rises, the heat will not radiate outward due to the effect of the outer insulation layer. Compared with the prior art, the reflection of light and the heat radiation of this embodiment are very small. High energy efficiency.

实施例二Embodiment two

如图4、图5所示,本实施例中,外保温层(即保温层外层1及保温层内层9)、内层2均为球状,透光口7呈孔状。本实施用于点聚焦的太阳能接收装置,其原理与实施例一相同,此处不再赘述。As shown in Fig. 4 and Fig. 5, in this embodiment, the outer insulation layer (i.e. the outer layer 1 of the insulation layer and the inner layer 9 of the insulation layer) and the inner layer 2 are spherical, and the light-transmitting opening 7 is hole-shaped. This implementation is used in a point-focused solar receiving device, and its principle is the same as that of Embodiment 1, so it will not be repeated here.

Claims (8)

1、一种太阳能接收装置,该接收装置包括外保温层及内层,其特征在于,外保温层与内层之间的密封空间为热载体腔,内层所围的空间为吸热腔;在外保温层上设有热载体进口、热载体出口,热载体腔通过该热载体进口、热载体出口分别与外界相通;在外保温层、内层上相对应位置设有透光口,外界光线可通过该透光口进入到吸热腔中。1. A solar receiving device, the receiving device comprises an outer thermal insulation layer and an inner layer, characterized in that the sealed space between the outer thermal insulation layer and the inner layer is a heat carrier cavity, and the space surrounded by the inner layer is a heat absorption cavity; A heat carrier inlet and a heat carrier outlet are provided on the outer insulation layer, and the heat carrier cavity communicates with the outside world through the heat carrier inlet and the heat carrier outlet respectively; light-transmitting ports are provided at corresponding positions on the outer insulation layer and the inner layer, and the external light can pass through. Enter into the heat absorption cavity through the light-transmitting port. 2、如权利要求1所述太阳能接收装置,其特征在于,所述透光口处设有透明玻璃而将所述吸热腔封闭。2. The solar energy receiving device according to claim 1, wherein a transparent glass is provided at the light-transmitting opening to seal the heat-absorbing cavity. 3、如权利要求1所述太阳能接收装置,其特征在于,所述外保温层、内层均为球状,所述透光口呈孔状。3. The solar receiving device as claimed in claim 1, wherein the outer thermal insulation layer and the inner layer are spherical, and the light-transmitting opening is hole-shaped. 4、如权利要求3所述太阳能接收装置,其特征在于,所述外保温层、内层均为柱状,所述透光口呈条状。4. The solar receiving device according to claim 3, wherein the outer insulation layer and the inner layer are columnar, and the light-transmitting opening is strip-shaped. 5、如权利要求4所述太阳能接收装置,其特征在于,所述外保温层、内层均为圆柱状。5. The solar receiving device according to claim 4, wherein the outer thermal insulation layer and the inner layer are both cylindrical. 6、如权利要求1至5中任一项所述太阳能接收装置,其特征在于,所述外保温层包括保温层内层及由保温材料制成的保温层外层。6. The solar receiving device according to any one of claims 1 to 5, characterized in that the outer insulation layer comprises an inner insulation layer and an outer insulation layer made of insulation materials. 7、如权利要求1至5中任一项所述太阳能接收装置,其特征在于,所述内层采用金属材料制成。7. The solar receiving device according to any one of claims 1 to 5, wherein the inner layer is made of metal material. 8、如权利要求1至5中任一项所述太阳能接收装置,其特征在于,所述内层的内表面附着有耐高温太阳能选择性吸收涂层。8. The solar receiving device according to any one of claims 1 to 5, characterized in that a high temperature resistant solar selective absorbing coating is attached to the inner surface of the inner layer.
CNU2007200609941U 2007-12-06 2007-12-06 solar receiver Expired - Fee Related CN201138082Y (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012055160A1 (en) * 2010-10-24 2012-05-03 Zhang Xianfeng Light-locking solar thermal collector and light-locking solar thermal collecting method
ITRM20120676A1 (en) * 2012-12-31 2014-07-01 Innova Solar Energy S R L SOLAR CONCENTRATOR
CN106989524A (en) * 2017-04-28 2017-07-28 中国能源建设集团陕西省电力设计院有限公司 A kind of light spot energy measuring system and method suitable for solar energy dish-style optically focused

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012055160A1 (en) * 2010-10-24 2012-05-03 Zhang Xianfeng Light-locking solar thermal collector and light-locking solar thermal collecting method
ITRM20120676A1 (en) * 2012-12-31 2014-07-01 Innova Solar Energy S R L SOLAR CONCENTRATOR
CN106989524A (en) * 2017-04-28 2017-07-28 中国能源建设集团陕西省电力设计院有限公司 A kind of light spot energy measuring system and method suitable for solar energy dish-style optically focused

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Granted publication date: 20081022

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